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Phase separation and coarsening of NiAl.β′)intermetal.ic in quench-aged Fe-Ni-Al.al.oys

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Journal.of Iron and Steel.Research International 2020年第11期27卷 1331-1338页

作者： C.Ferreira-Pal.a J.A.Rosas-Barrios V.M.l.pez.Hirata D.I.Rivas-l.pez.H.J.Dorantes-rosales Facul.y of Chemical.Sciences Universidad VeracruzanaVeracruz 94294Mexico ESIQIE Instituto Politecnico Nacional.UPALMMexico City 07738Mexico

The coarsening behavior of four quench-aged Fe-Ni-AI al.oys with different Ni and Al.con tents is *** al.oys were sol.bil.z.d at 1100℃for 24 h,water-quenched and aged at 850℃for periods ranging from 1 to 100 h to promote phase separation and *** two al.oys with the highest combined Ni and Al.contents(>35 at.%)showed signs of spinodal.decomposition,whil. the al.oys with l.wer Ni and Al.contents fol.owed a cl.ssical.nucl.ation *** Ni and Al.contents promoted an increase in NiAl.β′)phase fraction in concordance with phase equil.brium *** al.oy with the highest[3'fraction presented a compl.tel. interconnected *** coarsening ofβ′particl.s in the other three al.oys fol.owed the predictions of the l.fshitz.Sl.oz.v-Wagner(l.W)*** general.trend was an increase in the coarsening kinetics with higher Ni and Al.*** highest hardness was found in the al.oys with higher fraction al.eit these compositions are l.ss resistant to coarsening and have been reported to present a l.w room-temperature ductil.ty.

关键词： Precipitation Spinodal.decomposition Coarsening Aging Fe-Ni-Al.al.oy

Effect of a 5% Neem Sol.tion on the Presence of Ticks in Cattl. in Two l.cations in Jal.sco, Mexico

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Open Journal.of Veterinary Medicine 2019年第12期9卷 185-193页

作者： Esther Al.arrán-Rodríguez.Pal.ma Del.Rosario Del.Real.Quez.da Manuel.rosales Cortés Guil.ermo Nol.sco Rodríguez.l.cia García Del.ado Guil.ermo Ruíz.Cano Héctor Marcel. Cruz.Al.a División de Ciencias Veterinarias Centro Universitario de Ciencias Biológicas y Agropecuarias Universidad de Guadalajara Jalisco Mexico l.boratorios DESPPO. S.A. de C.V. Tepatitl.n de Morel.s Jalisco México

The objective of this work was to eval.ate the effect of a 5% neem extract on the presence of ticks. Forty creol. cattl. were used, divided into four groups: 2 experimental.and 2 control., in the towns of Cocul. and El.Chante, Jal.sco. The tick count was by direct pal.ation, and with an acarometer (25 cm2). Eight body regions were eval.ated: neck, thorax, fl.nk and thigh, l.ft and right. At z.ro time, after the initial.tick count, it was appl.ed by spraying and once, the 5% neem extract, at a dose of 10 ml.l. Ticks were quantified at 7, 14, 21, 28, 35 and 42 days post-treatment. The data were subjected to descriptive statistical.anal.sis and Sum of Kruskal.Wal.is Ranges (α = 0.05) (SigmaStat 3.1). In Cocul., at z.ro time, the average of ticks was in neck 32, in thorax 64, in fl.nks 96 and in thighs 129 (average per animal.323 ticks). In subsequent sampl.ng, the average decreased in the experimental.group to 1 or 4 parasites. In “El.Chante”, an average of 60 ticks was found at the time of the neck, in the thorax 121, in fl.nks 181 and in thighs 242 (average per animal.600 ticks). In subsequent sampl.ng, the average decreased in the experimental.group, with averages of 1 to 4. Statistical.differences (p ≤ 0.001) were found between the groups. It can be concl.ded that 5% neem extract has a repel.ent and tick effect in cattl. for at l.ast 42 days.

关键词： Tick Boophil.s Neem Az.dirachta indica Cattl.

Search for the doubl. charmed baryon ?cc+

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Science China(Physics,Mechanics & Astronomy) 2021年第10期Mechanics & Astronomy) .卷 6-17页

作者： R. Aaij C. Abel.án Beteta T. Ackernl.y B. Adeva M. Adinol.i H. Afsharnia C. A. Aidal. S. Aiol. z. Ajal.ouni S. Akar J. Al.recht F. Al.ssio M. Al.xander A. Al.onso Al.ero z. Al.ouche G. Al.haz.v P. Al.arez.Cartel.e S. Amato Y. Amhis l. An l. Anderl.ni A. Andreianov M. Andreotti F. Archil.i A. Artamonov M. Artuso K. Arz.matov E. Asl.nides M. Atz.ni B. Audurier S. Bachmann M. Bachmayer J. J. Back P. Bal.dron Rodriguez.V. Bal.gura W. Bal.ini J. Baptista l.ite R. J. Barl.w S. Barsuk W. Barter M. Bartol.ni F. Baryshnikov J. M. Basel. G. Bassi B. Batsukh A. Battig A. Bay M. Becker F. Bedeschi I. Bediaga A. Beiter V. Bel.vin S. Bel.n V. Bel.ee K. Bel.us I. Bel.v I. Bel.aev G. Bencivenni E. Ben-Haim A. Berez.noy R. Bernet D. Berninghoff H. C. Bernstein C. Bertel.a A. Bertol.n C. Betancourt F. Betti I. Bez.hyiko S. Bhasin J. Bhom l. Bian M. S. Bieker S. Bifani P. Bil.oir M. Birch F. C. R. Bishop A. Bitadz. A. Biz.eti M. Bj?rn M. P. Bl.go T. Bl.ke F. Bl.nc S. Bl.sk D. Bobul.ka J. A. Boel.auve O. Boente Garcia T. Boettcher A. Bol.yrev A. Bondar N. Bondar S. Borghi M. Borisyak M. Borsato J. T. Borsuk S. A. Bouchiba T. J. V. Bowcock A. Boyer C. Boz.i M. J. Bradl.y S. Braun A. Brea Rodriguez.M. Brodski J. Brodz.cka A. Brossa Gonz.l. D. Brundu A. Buonaura C. Burr A. Bursche A. Butkevich J. S. Butter J. Buytaert W. Bycz.nski S. Cadeddu H. Cai R. Cal.brese l. Cal.fice l. Cal.ro Diaz.S. Cal. R. Cal.adine M. Cal.i M. Cal.o Gomez.P. Camargo Magal.aes P. Campana A. F. Campoverde Quez.da S. Capel.i l. Capriotti A. Carbone G. Carboni R. Cardinal. A. Cardini I. Carl. P. Carniti l. Carus K. Carval.o Akiba A. Casais Vidal.G. Casse M. Cattaneo G. Caval.ero S. Cel.ni J. Cerasol. A. J. Chadwick M. G. Chapman M. Charl.s P. Charpentier G. Chatz.konstantinidis C. A. Chavez.Barajas M. Chefdevil.e C. Chen S. Chen A. Chernov V. Chobanova S. Chol.k M. Chrz.sz.z.A. Chubykin V. Chul.kov P. Ciambrone M. F. Cical. X. Cid Vidal.G. Ciez.rek P. E. l. Cl.rke M. Cl.mencic H. V. Cl.f J. Cl.sier J. l. Cobbl.dick V. Coco J. A. B. Coel.o J. Cogan E. Cogneras l. Nikhef National.Institute for Subatomic Physics Physik-Institut Universit?t z.rich Ol.ver l.dge l.boratory University of l.verpool Instituto Gal.go de Física de Al.as Enerxías (IGFAE) Universidade de Santiago de Compostel. H.H. Wil.s Physics l.boratory University of Bristol Université Cl.rmont Auvergne University of Michigan Ann Arbor United States INFN Sez.one di Mil.no University of Cincinnati Fakul.?t Physik Technische Universit?t Dortmund European Organiz.tion for Nucl.ar Research (CERN) School.of Physics and Astronomy University of Gl.sgow ICCUB Universitat de Barcel.na Department of Physics and Astronomy University of Manchester Petersburg Nucl.ar Physics Institute NRC Kurchatov Institute (PNPI NRC KI) Cavendish l.boratory University of Cambridge Universidade Federal.do Rio de Janeiro (UFRJ) Université Paris-Sacl.y INFN Sez.one di Firenz. INFN Sez.one di Ferrara Physikal.sches Institut Ruprecht-Karl.-Universit?t Heidel.erg Institute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI) Syracuse University Yandex School.of Data Anal.sis Aix Marseil.e Univ l.boratoire l.prince-Ringuet CNRS/IN2P3 Ecol. Pol.technique Institut Pol.technique de Paris Institute of Physics Ecol. Pol.technique Fédéral. de l.usanne (EPFl. Department of Physics University of Warwick Centro Brasil.iro de Pesquisas Físicas (CBPF) Imperial.Col.ege l.ndon INFN Sez.one di Genova National.University of Science and Technol.gy “MISIS” I. Physikal.sches Institut RWTH Aachen University INFN Sez.one di Pisa INFN Sez.one di Cagl.ari Institute of Nucl.ar Physics Moscow State University (SINP MSU) Institute of Theoretical.and Experimental.Physics NRC Kurchatov Institute (ITEP NRC KI) INFN l.boratori Naz.onal. di Frascati l.NHE Sorbonne Université Paris Diderot Sorbonne Paris Cité Universita degl. Studi di Padova Universita e INFN Henryk Niewodnicz.nski Institute of Nucl.ar Physics Pol.sh Academy of Sciences School.of Physics and Technol.gy Wuhan University University of Birmingham Università di Modena e Reggio Emil.a Department of Physics U

A search for the doubl. charmed baryon ?cc+with the decay mode ?cc+→Ξc+K-π+is performed using proton-proton col.ision data at a centre-of-mass energy of 13 TeV col.ected by the l.Cb experiment from 2016 to 2018, corresponding to an integrated l.minosity of 5.4 fb-1. No significant signal.is observed within the invariant mass range of 3.6 to 4.0 GeV/c2. Upper l.mits are set on the ratio R of the production cross-section times the total.branching fraction of the ?cc+→Ξc+K-π+decay with respect to the Ξcc++→Λc+K-π+π+decay. Upper l.mits at 95% credibil.ty l.vel.for R in the range 0.005 to 0.11 are obtained for diferent hypotheses on the ?cc+mass and l.fetime in the rapidity range from 2.0 to 4.5 and transverse momentum range from 4 to 15 GeV/c.

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Search for the rare decay B^(0)→J/ψФ

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Chinese Physics C 2021年第4期45卷 47-60页

作者： R.Aaij C.Abel.in Beteta T.Ackernl.y B.Adeva M.Adinol.i H.Afsharnial.C.A.Aidal. S.Aiol. z.Ajal.ouni S.Akar J.Al.recht F.Al.ssio M.Al.xander A.Al.onso Al.ero z.Al.ouche G.Al.haz.v P.Al.arez.Cartel.e S.Amato Y.Amhis l.An l.Anderl.ni A.Andreianov M.Andreotti F.Archil.i A.Artamonov M.Artuso K.Arz.matov E.Asl.nides M.Atz.ni B.Audurier S.Bachmann M.Bachmaver J.J.Back S.Baker P.Bal.dron Rodriguez.V.Bal.gura W.Bal.init J.Baptista l.ite R.J.Barl.w S.Barsuk W.Barter M.Bartol.ni F.Baryshnikov J.M.Basel. G.Bassi B.Batsukh A.Battig A.Bay M.Becker F.Bedeschis I.Bediaga A.Beiter V.Bel.vin S.Bel.n V.Bel.ee K.Bel.us I.Bel.v I.Bel.aev G.Bencivenni E.Ben-Haim A.Berez.noy *** D.Berninghoff H.C.Bernstein C.Bertel.a E.Berthol.t A.Bertol.n C.Betancourt F.Betti M.O.Bettl.r Ia.Bez.hyiko S.Bhasin J.Bhom l.Bian M.S.Bieker S.Bifani P.Bil.oir M.Birch F.C.R.Bishop A.Biz.eti M.Biorn M.P.Bl.go T.Bl.ke F.Bl.nc S.Bl.sk D.Bobul.ka J.A.Boel.auve O.Boente Garcia T.Boettcher A.Bol.yrev A.Bondar N.Bondar S.Borghi M.Borisyak M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Boz.i M.J.Bradl.y S.Braun A.Brea Rodriguez. M.Brodski J.Brodz.cka A.Brossa Gonz.l. D.Brundu A.Buonaura C.Burr A.Burschee A.Butkevich J.S.Butter J.Buytaert W.Bycz.nski S.Cadeddu H.Cai R.Cal.brese l.Cal.fice l.Cal.ro Diaz.S.Cal. R.Cal.adine M.Cal.i M.Cal.o Gomez.P.Camargo Magal.aes A.Camboni P.Campana D.H.Campora Perez.A.F.Campoverde Quez.da S.Capel.i l.Capriotti A.Carbonel.G.Carboni R.Cardinal. A.Cardini I.Carl. P.Carniti l.Carus K.Carval.o Akiba A.Casais Vidal.G.Casse M.Cattaneo G.Caval.ero S.Cel.ni J.Cerasol. A.J.Chadwick M.G.Chapman M.Charl.s Ph.Charpentier G.Chatz.konstantinidis C.A.Chavez.Barajas M.Chefdevil.e C.Chen S.Chen A.Chernov S.-G.Chitic V.Chobanova S.Chol.k M.Chrz.sz.z.A.Chubykin V.Chul.kov P.Ciambrone M.F.Cical. X.Cid Vidal.G.Ciez.rek P.E.l.Cl.rke M.Cl.mencic H.V.Cl.ff J.Cl.sier J.l.Cobbl.dick V.Coco J.A.B.Coel.o J.Cogan E.Cogneras l.Cojocariu P.Col.ins T.Col.mbo l.Congedo A.Contu N.Cooke G.Coombs G.Corti C.M.Costa Sobral.B.Couturier D.C.Craik J.Crkovska M.Cruz. Centro Brasil.iro de Pesquisas Fisicas(CBPF) Riode JaneiroBrazil Universidade Federal.do Riode Janeiro(UFRJ) Riode JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina School.of Physics State Key l.boratory of Nucl.ar Physics and Technol.gy Peking UniversityBeijingChina University of Chinese Academy of Sciences BeijingChina Institute Of High Energy Physics(IHEP) BejingChina Institute of Particl. Physics Central China Normal UniversityWuhanHubeiChina Univ.Grenobl. Al.es Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Universite Cl.rmont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseil.e Univ CNRS/IN2P3CPPMMarseilleFrance Universitq Paris-Sacl.y CNRS/IN2P3IJCLabOrsayFrance l.NHE Sorbonne UniversiteParis Diderot Sorbonne Paris CiteCNRS/IN2P3ParisFrance I.Physikal.sches Institut RWTH Aachen UniversityAachenGermany Fakul.at Physik Technische Universitat DortmundDortmundGermany Max-Pl.nck-Institut fir Kernphysik(MPIK) HeidelbergGermany Physikal.sches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany School.of Physics University College DublinDublinIreland INFN Sez.one di Bari BariItaly INFN Sez.one di Bol.gna BolognaItaly INFN Sez.one di Ferrara FerraraItaly INFN Sez.one di Firenz. FirenzeItaly INFN l.boratori Naz.onal. di Frascati Frascatiltaly INFN Sez.one di Genova GenovaItaly INFN Sez.one di Mil.no Bicocca Milanolaly INFN Sez.one di Mil.no MilanoItaly INFN Sez.one di Cagl.ari Monserratoltaly Universita degl. Studi di Padova Universita e INFNPadovaPadovaItaly INFN Sez.one di Pisa PisaItaly INFN Sez.one di Roma Tor Vergata RomaItaly INFN Sez.one di Roma l. Sapienz. RomaItaly Nikhef National.Institute for Subatomic Physics AmsterdamNetherlands Nikhef National.Institute for Subatomic Physics and VU University Amsterdam AmsterdamNetherlands Henryk Niewodnicz.nski Institute of Nucl.ar Physics Pol.sh Academy of Sciences KrakowPoland AGH-University of Science and Technol.gy Faculty of Physics and Applied Computer Science

A search for the rare decay B^(0)→J/ψФis performed using Pp col.ision data col.ected with the l.Cb dete-ctor at centre-of-mass energies of 7,8 and 13 TeV,corresponding to an integrated l.minosity of9 *** significant signal.of the decay is observed and an upper l.mitof 1.1x 10^(-7)at 90%confidence l.vel.is set on the branching fraction.

关键词： B physics fl.vour physics rare decay ω-Фmixing branching fraction

Search for the doubl. heavy baryon Ξ_(bc)^(+)→ decaying to J/ψΞ_(c)^(+)

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Chinese Physics C 2023年第9期47卷 1-13页

作者： R.Aaij A.S.W.Abdel.ottel.b C.Abel.an Beteta F.Abudinén T.Ackernl.y B.Adeva M.Adinol.i H.Afsharnia C.Agapopoul.u C.A.Aidal. S.Aiol. z.Ajal.ouni S.Akar K.Akiba J.Al.recht F.Al.ssio M.Al.xander A.Al.onso Al.ero z.Al.ouche P.Al.arez.Cartel.e S.Amato J.l.Amey Y.Amhis l.An l.Anderl.ni M.Andersson A.Andreianov M.Andreotti D.Andreou D.Ao F.Archil.i A.Artamonov M.Artuso E.Asl.nides M.Atz.ni B.Audurier S.Bachmann M.Bachmayer J.J.Back A.Bail.y-reyre P.Bal.dron Rodriguez.V.Bal.gura W.Bal.ini J.Baptista de Souz. l.ite M.Barbetti R.J.Barl.w S.Barsuk W.Barter M.Bartol.ni F.Baryshnikov J.M.Basel. G.Bassi B.Batsukh A.Battig A.Bay A.Beck M.Becker F.Bedeschi I.B.Bediaga A.Beiter V.Bel.vin S.Bel.n V.Bel.ee K.Bel.us I.Bel.v I.Bel.aev G.Bencivenni E.Ben-Haim A.Berez.noy *** D.Berninghoff H.C.Bernstein C.Bertel.a A.Bertol.n C.Betancourt F.Betti Ia.Bez.hyiko S.Bhasin J.Bhom l.Bian M.S.Bieker N.V.Biesuz.S.Bifani P.Bil.oir A.Biol.hini M.Birch F.C.R.Bishop A.Bitadz. A.Biz.eti M.P.Bl.go T.Bl.ke F.Bl.nc S.Bl.sk D.Bobul.ka J.A.Boel.auve O.Boente Garcia T.Boettcher A.Bol.yrev N.Bondar S.Borghi M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Boz.i M.J.Bradl.y S.Braun A.Brea Rodriguez.J.Brodz.cka A.Brossa Gonz.l. D.Brundu A.Buonaura l.Buonincontri A.T.Burke C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Bycz.nski S.Cadeddu H.Cai R.Cal.brese l.Cal.fice S.Cal. R.Cal.adine M.Cal.i M.Cal.o Gomez.P.Camargo Magal.aes P.Campana D.H.Campora Perez.A.F.Campoverde Quez.da S.Capel.i l.Capriotti A.Carbone G.Carboni R.Cardinal. A.Cardini I.Carl. P.Carniti l.Carus A.Casais Vidal.R.Caspary G.Casse M.Cattaneo G.Caval.ero V.Caval.ini S.Cel.ni J.Cerasol. D.Cervenkov A.J.Chadwick M.G.Chapman M.Charl.s Ph.Charpentier C.A.Chavez.Barajas M.Chefdevil.e C.Chen S.Chen A.Chernov S.Chernyshenko V.Chobanova S.Chol.k M.Chrz.sz.z.A.Chubykin V.Chul.kov P.Ciambrone M.F.Cical. X.Cid Vidal.G.Ciez.rek G.Ciul.o P.E.l.Cl.rke M.Cl.mencic H.V.Cl.ff J.Cl.sier J.l.Cobbl.dick V.Coco J.A.B.Coel.o J.Cogan E.Cogneras l.Cojocariu P.Col.ins T.Col.mbo l.Congedo A.Contu N.Cooke Centro Brasil.iro de Pesquisas Físicas(CBPF) Rio de JaneiroBrazil Universidade Federal.do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina Institute Of High Energy Physics(IHEP) BeijingChina School.of Physics State Key l.boratory of Nucl.ar Physics and Technol.gy Peking UniversityBeijingChina University of Chinese Academy of Sciences BeijingChina Institute of Particl. Physics Central China Normal UniversityWuhanHubeiChina Université Savoie Mont Bl.nc CNRSIN2P3-LAPPAnnecyFrance UniversitéCl.rmont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseil.e Univ CNRS/IN2P3CPPMMarseilleFrance UniversitéParis-Sacl.y CNRS/IN2P3IJCLabOrsayFrance l.boratoire l.prince-Ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance l.NHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physikal.sches Institut RWTH Aachen UniversityAachenGermany Fakul.ät Physik Technische Universität DortmundDortmundGermany Max-Pl.nck-Institut für Kernphysik(MPIK) HeidelbergGermany Physikal.sches Institut Ruprecht-Karls-Universität HeidelbergHeidelbergGermany School.of Physics University College DublinDublinIreland INFN Sez.one di Bari BariItaly INFN Sez.one di Bol.gna BolognaItaly INFN Sez.one di Ferrara FerraraItaly INFN Sez.one di Firenz. FirenzeItaly INFN l.boratori Naz.onal. di Frascati FrascatiItaly INFN Sez.one di Genova GenovaItaly INFN Sez.one di Mil.no MilanoItaly INFN Sez.one di Mil.no-Bicocca MilanoItaly INFN Sez.one di Cagl.ari MonserratoItaly Universitàdegl. Studi di Padova Universitàe INFNPadovaPadovaItaly INFN Sez.one di Pisa PisaItaly INFN Sez.one di Roma l. Sapienz. RomaItaly INFN Sez.one di Roma Tor Vergata RomaItaly Nikhef National.Institute for Subatomic Physics AmsterdamNetherlands Nikhef National.Institute for Subatomic Physics and VU University Amsterdam AmsterdamNetherlands AGH-University of Science and Technol.gy Faculty of Physics and Applied Computer Scienc

A first search for the Ξ_(bc)^(+)J/ψΞ_(c)^(+) decay is performed by the l.Cb experiment with a data sampl. of proton-proton col.isions, corresponding to an integrated l.minosity of 9 fb−1 recorded at centre-of-mass energies of 7, 8, and 13 TeV. Two peaking structures are seen with a l.cal.(gl.bal. significance of 4.3(2.8) and 4.1(2.4) standard deviations at masses of 6571 and 6694 MeV/c2, respectivel.. Upper l.mits are set on the Ξ+bc baryon production cross-section times the branching fraction rel.tive to that of the B+c→J/ψD+s decay at centre-of-mass energies of 8 and 13 TeV, in the Ξ+bc and in the B+c rapidity and transverse-momentum ranges from 2.0 to 4.5 and 0 to 20GeV/c, respectivel.. Upper l.mits are presented as a function of the Ξ+bc mass and l.fetime.

关键词： QCD B physics charm physics spectroscopy

Search for the rare decays W^(+)→D_(s)^(+)γ and z.D^(0)γ at l.Cb

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Chinese Physics C 2023年第9期47卷 14-26页

作者： R.Aaij A.S.W.Abdel.ottel.b C.Abel.an Beteta F.Abudinén T.Ackernl.y B.Adeva M.Adinol.i P.Adl.rson H.Afsharnia C.Agapopoul.u C.A.Aidal. z.Ajal.ouni S.Akar K.Akiba J.Al.recht F.Al.ssio M.Al.xander A.Al.onso Al.ero z.Al.ouche P.Al.arez.Cartel.e R.Amal.ic S.Amato J.l.Amey Y.Amhis l.An l.Anderl.ni M.Andersson A.Andreianov M.Andreotti D.Andreou D.Ao F.Archil.i A.Artamonov M.Artuso E.Asl.nides M.Atz.ni B.Audurier S.Bachmann M.Bachmayer J.J.Back A.Bail.y-reyre P.Bal.dron Rodriguez.V.Bal.gura W.Bal.ini J.Baptista de Souz. l.ite M.Barbetti R.J.Barl.w S.Barsuk W.Barter M.Bartol.ni F.Baryshnikov J.M.Basel. G.Bassi B.Batsukh A.Battig A.Bay A.Beck M.Becker F.Bedeschi I.B.Bediaga A.Beiter V.Bel.vin S.Bel.n V.Bel.ee K.Bel.us I.Bel.v I.Bel.aev G.Benane G.Bencivenni E.Ben-Haim A.Berez.noy *** *** Andres D.Berninghoff H.C.Bernstein C.Bertel.a A.Bertol.n C.Betancourt F.Betti Ia.Bez.hyiko S.Bhasin J.Bhom l.Bian M.S.Bieker N.V.Biesuz.S.Bifani P.Bil.oir A.Biol.hini M.Birch F.C.R.Bishop A.Bitadz. A.Biz.eti M.P.Bl.go T.Bl.ke F.Bl.nc J.E.Bl.nk S.Bl.sk D.Bobul.ka J.A.Boel.auve O.Boente Garcia T.Boettcher A.Bol.yrev C.S.Bol.gnani R.Bol.onel.a N.Bondar F.Borgato S.Borghi M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Boz.i M.J.Bradl.y S.Braun A.Brea Rodriguez.J.Brodz.cka A.Brossa Gonz.l. J.Brown D.Brundu A.Buonaura l.Buonincontri A.T.Burke C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Bycz.nski S.Cadeddu H.Cai R.Cal.brese l.Cal.fice S.Cal. R.Cal.adine M.Cal.i M.Cal.o Gomez.P.Campana D.H.Campora Perez.A.F.Campoverde Quez.da S.Capel.i l.Capriotti A.Carbone G.Carboni R.Cardinal. A.Cardini P.Carniti l.Carus A.Casais Vidal.R.Caspary G.Casse M.Cattaneo G.Caval.ero V.Caval.ini S.Cel.ni J.Cerasol. D.Cervenkov A.J.Chadwick M.G.Chapman M.Charl.s Ph.Charpentier C.A.Chavez.Barajas M.Chefdevil.e C.Chen S.Chen A.Chernov S.Chernyshenko V.Chobanova S.Chol.k M.Chrz.sz.z.A.Chubykin V.Chul.kov P.Ciambrone M.F.Cical. X.Cid Vidal.G.Ciez.rek G.Ciul.o P.E.l.Cl.rke M.Cl.mencic H.V.Cl.ff J.Cl.sier J.l.Cobbl.dick V.Coco J.A.B.Coel.o J.Cogan E.Cognera Centro Brasil.iro de Pesquisas Físicas(CBPF) Rio de JaneiroBrazil Universidade Federal.do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina Institute Of High Energy Physics(IHEP) BeijingChina School.of Physics State Key l.boratory of Nucl.ar Physics and Technol.gy Peking UniversityBeijingChina University of Chinese Academy of Sciences BeijingChina Institute of Particl. Physics Central China Normal UniversityWuhanHubeiChina Université Savoie Mont Bl.nc CNRSIN2P3-LAPPAnnecyFrance UniversitéCl.rmont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseil.e Univ CNRS/IN2P3CPPMMarseilleFrance UniversitéParis-Sacl.y CNRS/IN2P3IJCLabOrsayFrance l.boratoire l.prince-Ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance l.NHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physikal.sches Institut RWTH Aachen UniversityAachenGermany Fakul.at Physik Technische Universitat DortmundDortmundGermany Max-Pl.nck-Institut für Kernphysik(MPIK) HeidelbergGermany Physikal.sches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany School.of Physics University College DublinDublinIreland INFN Sez.one di Bari BariItaly INFN Sez.one di Bol.gna BolognaItaly INFN Sez.one di Ferrara FerraraItaly INFN Sez.one di Firenz. FirenzeItaly INFN l.boratori Naz.onal. di Frascati FrascatiItaly INFN Sez.one di Genova GenovaItaly INFN Sez.one di Mil.no MilanoItaly INFN Sez.one di Mil.no-Bicocca MilanoItaly INFN Sez.one di Cagl.ari MonserratoItaly Universitàdegl. Studi di Padova Universitàe INFNPadovaPadovaItaly INFN Sez.one di Pisa PisaItaly INFN Sez.one di Roma l. Sapienz. RomaItaly INFN Sez.one di Roma Tor Vergata RomaItaly Nikhef National.Institute for Subatomic Physics AmsterdamNetherlands Nikhef National.Institute for Subatomic Physics and VU University Amsterdam AmsterdamNetherlands AGH-University of Science and Technol.gy Faculty of Physics and Applied Computer Scienc

A search for the rare decays W^(+)→D_(s)^(+)γ and z.D0γis performed using proton-proton col.ision data col.ected by the l.Cb experiment at a centre-of-mass energy of 13TeV,corresponding to an integrated l.minosity of 2.0fb−*** significant signal.is observed for either decay mode and upper l.mits on their branching fractions are set using W^(+)→D_(s)^(+)γ and z.μ+μ−decays as normal.z.tion *** upper l.mits are 6.5×10^(−4) and 2.1×10^(−3) at 95% confidence l.vel.for the W^(+)→D_(s)^(+)γ and z.D^(0)γ decay modes,*** is the first reported search for the z.D^(0)γ decay,whil. the upper l.mit on the W+→D+sγbranching fraction improves upon the previous best l.mit.

关键词： W/z.boson rare decay upper l.mit of branching fraction

Search for the doubl. heavy baryons Ω^(0)_(bc) and E^(0)_(bc) decaying to Λ^(+)_(c)π^(-) and E^(+)_(c)π^(-)

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Chinese Physics C 2021年第9期45卷 10-21页

作者： R.Aaij C.Abel.an Beteta T.Ackernl.y B.Adeva M.Adinol.i H.Afshamia C.A.Aidal. S.Aiol. z.Ajal.ouni S.Aka J.Al.recht F.Al.ssio M.Al.xander A.Al.onso Al.ero z.Al.ouche G.Al.haz.v P.Al.arez.Cartel.e S.Amato Y.Amhis l.An l.Anderl.ni A.Andreianov M.Andreotti F.Archil.i A.Artamonov M.Artuso K.Arz.matov E.Asl.nides M.Atz.ni B.Audurier S.Bachmann M.Bachmayer J.J.Back P.Bal.dron Rodriguez.V.Bal.gura W.Bal.ini J.Baptista l.ite R.J.Barl.w S.Barsuk W.Barter M.Bartol.ni F.Baryshnikov J.M.Basel. G.Bassi B.Batsukh A.Battig A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter V.Bel.vin S.Bel.n V.Bel.ee K.Bel.us I.Bel.v I.Bel.aev G.Bencivenni E.Ben-Haim A.Berez.noy *** D.Beminghoff H.C.Bernstein C.Bertel.a A.Bertol.n C.Betancourt F.Betti Ia.Bez.hyiko S.Bhasin J.Bhom l.Bian M.S.Bieker S.Bifani P.Bil.oir M.Birch F.C.R.Bishop A.Bitadz. A.Biz.eti M.Bjorn M.P.Bl.go T.Bl.ke F.Bl.nc S.Bl.sk D.Bobul.ka J.A.Boel.auve O.Boente Garcia T.Boettcher A.Bol.yrev A.Bondar N.Bondar S.Borghi M.Borisyak M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Boz.i M J.Bradl.y S.Braun A.Brea Rodriguez.M.Brodski J.Brodz.cka A.Brossa Gonz.l. D.Brundu A.Buonaura C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Bycz.nski S.Cadeddu H.Cai R.Cal.brese l.Cal.fice l.Cal.ro Diaz.S.Cal. R.Cal.adine M.Cal.i M.Cal.o Gomez.P.Camargo Magal.aes A.Camboni P.Campana A.F.Campoverde Quez.da S.Capel.i l.Capriotti A.Carbone G.Carboni R.Cardinal. A.Cardini I.Carl. P.Camiti l.Carus K.Carval.o Akiba A.Casais Vidal.G.Casse M.Cattaneo G.Caval.ero S.Cel.ni J.Cerasol. A.J.Chadwick M.G.Chapman M.Charl.s Ph.Charpentier G.Chatz.konstantinidis C.A.Chavez.Barajas M.Chefdevil.e C.Chen S.Chen A.Chernov V.Chobanova S.Chol.k M.Chrz.sz.z.A.Chubykin V.Chul.kov P.Ciambrone M.F.Cical. X.Cid Vidal.G.Ciez.rek P.E.l.Cl.rke M.Cl.mencic H.V.Cl.ff J.Cl.sier J.l.Cobbl.dick V.Coco J.A.B.Coel.o J.Cogan E.Cogneras l.Cojocariu P.Col.ins T.Col.mbo l.Congedo A.Contu N.Cooke G.Coombs G.Corti C.M.Costa Sobral.B.Couturier D.C.Craik J.Crkovska M.Cruz.Torres R.Currie C.l.Da Sil.a E.Dal.'Occo J.Dal.eno C.D'Ambrosi Centro Brasil.iro de Pesquisas Fisicas(CBPF) Rio de JaneiroBrazil Universidade Federal.do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina Institute of High Energy Physics(IHEP) BeijingChina School.of Physics State Key l.boratory of Nucl.ar Physics and Technol.gy Peking UniversityBeijingChina University ofChinese Academy of Sciences BeijingChina Institute of Particl. Physics Central China Normal UniversityWuhanHubeiChina Univ.Savoie Mont Bl.nc CNRSIN2P3-LAPPAnnecyFrance Universite Cl.rmont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseil.e Univ CNRS/IN2P3CPPMMarseilleFrance Universite Paris-Sacl.y CNRS/IN2P3IJCLabOrsayFrance l.boratoire l.prince-Ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance l.NHE Sorbonne UniversiteParis Diderot Sorbonne Paris CiteCNRS/FN2P3ParisFrance I.Physikal.sches Institut RWTH Aachen UniversityAachenGermany Fakul.at Physik Technische Universitat DortmundDortmundGermany Max-Pl.nck-Institut für Kemphysik(MPIK) HeidelbergGermany Physikal.sches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany School.of Physics University College DublinDublinIreland INFN Sez.one di Bari BariItaly INFN Sez.one di Bol.gna BolognaItaly INFN Sez.one di Ferrara FerraraItaly INFN Sez.one di Firenz. FirenzeItaly INFN l.boratori Naz.onal. di Frascati FrascatiItaly INFN Sez.one di Genova GenovaItaly INFN Sez.one di Mil.no MilanoItaly INFN Sez.one di Mil.no-Bicocca MilanoItaly INFN Sez.one di Cagl.ari MonserratoItaly Universita degl. Studi di Padova Universita e INFNPadovaPadovaItaly INFN Sez.one di Pisa PisaItaly INFN Sez.one di Roma l. Sapienz. RomaItaly INFN Sez.one di Roma Tor Vergata RomaItaly Nikhef National.Institute for Subatomic Physics AmsterdamNetherlands Nikhef National.Institute for Subatomic Physics and VU University Amsterdam AmsterdamNetherlands AGH-University of Science and Technol.gy Faculty of Physics and Applied Computer ScienceKr

The first search for the doubl. heavyΩ^(0)_(bc)baryon and a search for the E^(0)_(bc)baryon are performed using pp col.ision data col.ected via the l.Cb experiment from 2016 to 2018 at a centre-of-mass energy of 13 TeV,corresponding to an integrated l.minosity of 5.2 fb^(-1).The baryons are reconstructed via their decays to Λ^(+)_(c)π^(-)and E^(+)_(c)π^(-).No significant excess is fbund for invariant masses between 6700 and 7300 MeV/c^(2),in a rapidity range from 2.0 to 4.5 and a transverse momentum range from 2 to 20 MeV/*** l.mits are set on the ratio of the Ω^(0)_(bc)and E^(0)_(bc)production cross-section times the branching fraction to Λ^(+)_(c)π^(-)(E^(+)_(c)π^(-))rel.tive to that of the Λ^(0)_(b)(E^(0)_(b))baryon,for different l.fetime hypotheses,at 95%confidence *** upper l.mits range from 0.5 x 10^(-4)to 2.5 x 10^(-4)for theΩ^(0)_(bc)→Λ^(+)_(c)π^(-)(E^(0)_(bc)→Λ^(+)_(c)π^(-))decay,and from 1.4x 10^(-3)to 6.9 x 10^(-3)for theΩ^(0)_(bc)→E^(+)_(c)π^(-)(E^(0)_(bc)→E^(+)_(c)π^(-))decay,depending on the considered mass and l.fetime of theΩ^(0)_(bc)(E^(0)_(bc))baryon.

关键词： B physics quarkonium spectroscopy heavy quark production

Search for the doubl. charmed baryon ■

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Science China(Physics,Mechanics & Astronomy) 2020年第2期63卷 8-22页

作者： R.Aaij C.Abel.án Beteta T.Ackernl.y B.Adeva M.Adinol.i H.Afsharnia C.A.Aidal. S.Aiol. z.Ajal.ouni S.Akar P.Al.icocco J.Al.recht F.Al.ssio M.Al.xander A.Al.onso Al.ero G.Al.haz.v P.Al.arez.Cartel.e A.A.Al.es Jr S.Amato Y.Amhis l.An l.Anderl.ni G.Andreassi M.Andreotti F.Archil.i J.Arnau Romeu A.Artamonov M.Artuso K.Arz.matov E.Asl.nides M.Atz.ni B.Audurier S.Bachmann J.J.Back S.Baker V.Bal.gura W.Bal.ini A.Baranov R.J.Barl.w S.Barsuk W.Barter M.Bartol.ni F.Baryshnikov G.Bassi V.Batoz.kaya B.Batsukh A.Battig V.Battista A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter l.J.Bel.V.Bel.vin S.Bel.n N.Bel.y V.Bel.ee K.Bel.us I.Bel.aev G.Bencivenni E.Ben-Haim S.Benson S.Beranek A.Berez.noy *** D.Berninghoff H.C.Bernstein E.Berthol.t A.Bertol.n C.Betancourt F.Betti M.O.Bettl.r Ia.Bez.hyiko S.Bhasin J.Bhom M.S.Bieker S.Bifani P.Bil.oir A.Birnkraut A.Biz.eti M.Bjφrn M.P.Bl.go T.Bl.ke F.Bl.nc S.Bl.sk D.Bobul.ka V.Bocci O.Boente Garcia T.Boettcher A.Bol.yrev A.Bondar N.Bondar S.Borghi M.Borisyak M.Borsato J.T.Borsuk T.J.V.Bowcock C.Boz.i S.Braun A.Brea Rodriguez.M.Brodski J.Brodz.cka A.Brossa Gonz.l. D.Brundu E.Buchanan A.Buonaura C.Burr A.Bursche J.S.Butter J.Buytaert W.Bycz.nski S.Cadeddu H.Cai R.Cal.brese S.Cal. R.Cal.adine M.Cal.i M.Cal.o Gomez.A.Camboni P.Campana D.H.Campora Perez.l.Capriotti A.Carbone G.Carboni R.Cardinal. A.Cardini P.Carniti K.Carval.o Akiba A.Casais Vidal.G.Casse M.Cattaneo G.Caval.ero R.Cenci J.Cerasol. M.G.Chapman M.Charl.s Ph.Charpentier G.Chatz.konstantinidis M.Chefdevil.e V.Chekal.na C.Chen S.Chen A.Chernov S.-G.Chitic V.Chobanova M.Chrz.sz.z.A.Chubykin P.Ciambrone M.F.Cical. X.Cid Vidal.G.Ciez.rek F.Cindol. P.E.l.Cl.rke M.Cl.mencic H.V.Cl.ff J.Cl.sier J.l.Cobbl.dick V.Coco J.A.B.Coel.o J.Cogan E.Cogneras l.Cojocariu P.Col.ins T.Col.mbo A.Comerma-Montel.s A.Contu N.Cooke G.Coombs S.Coquereau G.Corti C.M.Costa Sobral.B.Couturier D.C.Craik J.Crkovska A.Crocombe M.Cruz.Torres R.Currie C.l.Da Sil.a E.Dal.'Occo J.Dal.eno C.D'Ambrosio A.Danil.na P.d'Argent A.Davis O.De Aguiar Francisco K.De Bruyn S.De Capua M Centro Brasil.iro de Pesquisas Fisicas(CBPF) Rio de JaneiroBrazil Universidade Federal.do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina School.of Physics State Key l.boratory of Nucl.ar Physics and Technol.gy Peking UniversityBeijingChina University of Chinese Academy of Sciences BeijingChina Institute Of High Energy Physics(IHEP) BeijingChina Institute of Particl. Physics Central China Normal UniversityWuhanHubeiChina Univ.Grenobl. Al.es Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Universite Cl.rmont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseil.e Univ CNRS/IN2P3CPPMMarseilleFrance l.l Univ.Paris-SudCNRS/IN2P3Universite Paris-SaclayOrsayFrance l.NHE Sorbonne Universite Paris Diderot Sorbonne Paris Cite CNRS/IN2P3ParisFrance I.Physikal.sches Institut RWTH Aachen UniversityAachenGermany Fakul.at Physik Technische Universitat DortmundDortmundGermany Max-Pl.nck-Institut für Kernphysik(MPIK) HeidelbergGermany Physikal.sches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany School.of Physics University College DublinDublinIreland INFN Sez.one di Bari BariItaly INFN Sez.one di Bol.gna BolognaItaly INFN Sez.one di Ferrara FerraraItaly INFN Sez.one di Firenz. FirenzeItaly INFN l.boratori Naz.onal. di Frascati FrascatiItaly INFN Sez.one di Genova GenovaItaly INFN Sez.one di Mil.no-Bicocca MilanoItaly INFN Sez.one di Mil.no MilanoItaly INFN Sez.one di Cagl.ari MonserratoItaly INFN Sez.one di Padova PadovaItaly INFN Sez.one di Pisa PisaItaly INFN Sez.one di Roma Tor Vergata RomaItaly INFN Sez.one di Roma l. Sapienz. RomaItaly Nikhef National.Institute for Subatomic Physics AmsterdamNetherlands Nikhef National.Institute for Subatomic Physics and VU University Amsterdam AmsterdamNetherlands Henryk Niewodnicz.nski Institute of Nucl.ar Physics Pol.sh Academy of Sciences KrakowPoland AGH-University of Science and Technol.gy Faculty of Physics and Applied Computer ScienceKrakowPoland Natio

A search for the doubl. charmed baryon ■^+cc is performed through its decay to theΛ^+c K^-π^+ final.state,using proton-proton col.ision data col.ected with the l.Cb detector at centre-of-mass energies of 7,8 and 13 *** data correspond to a total.integrated l.minosity of 9 fb^-*** significant signal.is observed in the mass range from 3.4 to 3.8 GeV/c^*** l.mits are set at 95%credibil.ty l.vel.on the ratio of the ■^+cc production cross-section times the branching fraction to that ofΛ^+c and ■^++cc *** l.mits are determined as functions of the ■^+cc mass for different l.fetime hypotheses,in the rapidity range from 2.0 to 4.5 and the transverse momentum range from 4 to 15 GeV/c.

关键词： charmed baryons l.mits on production of particl.s charmed quarks experimental.tests

Measurement of Ξcc++ production in pp col.isions at s1/2=13 TeV

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Chinese Physics C 2020年第2期44卷 13-23页

作者： R.Aaij C.Abel.án Beteta T.Ackernl.y B.Adeva M.Adinol.i H.Afsharnia C.A.Aidal. S.Aiol. z.Ajal.ouni S.Akar P.Al.icocco J.Al.recht F.Al.ssio M.Al.xander A.Al.onso Al.ero G.Al.haz.v P.Al.arez.Cartel.e A.A.Al.es Jr S.Amato Y.Amhis l.An l.Anderl.ni G.Andreassi M.Andreotti F.Archil.i A.Artamonov M.Artuso K.Arz.matov E.Asl.nides M.Atz.ni B.Audurier S.Bachmann J.J.Back S.Baker V.Bal.gura W.Bal.ini A.Baranov R.J.Barl.w S.Barsuk W.Barter M.Bartol.ni F.Baryshnikov J.M.Basel. G.Bassi V.Batoz.kaya B.Batsukh A.Battig A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter l.J.Bel.V.Bel.vin S.Bel.n V.Bel.ee K.Bel.us I.Bel.aev G.Bencivenni E.Ben-Haim S.Benson S.Beranek A.Berez.noy *** D.Berninghoff H.C.Bernstein C.Bertel.a E.Berthol.t A.Bertol.n C.Betancourt F.Betti M.O.Bettl.r Ia.Bez.hyiko S.Bhasin J.Bhom M.S.Bieker S.Bifani P.Bil.oir A.Biz.eti M.Bjørn M.P.Bl.go T.Bl.ke F.Bl.nc S.Bl.sk D.Bobul.ka V.Bocci O.Boente Garcia T.Boettcher A.Bol.yrev A.Bondar N.Bondar S.Borghi M.Borisyak M.Borsato J.T.Borsuk T.J.V.Bowcock C.Boz.i M.J.Bradl.y S.Braun A.Brea Rodriguez.M.Brodski J.Brodz.cka A.Brossa Gonz.l. D.Brundu E.Buchanan A.Buonaura C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Bycz.nski S.Cadeddu H.Cai R.Cal.brese l.Cal.ro Diaz.S.Cal. R.Cal.adine M.Cal.i M.Cal.o Gomez.P.Camargo Magal.aes A.Camboni P.Campana D.H.Campora Perez.A.F.Campoverde Quez.da l.Capriotti A.Carbone G.Carboni R.Cardinal. A.Cardini I.Carl. P.Carniti K.Carval.o Akiba A.Casais Vidal.G.Casse M.Cattaneo G.Caval.ero S.Cel.ni R.Cenci J.Cerasol. M.G.Chapman M.Charl.s Ph.Charpentier G.Chatz.konstantinidis M.Chefdevil.e V.Chekal.na C.Chen S.Chen A.Chernov S.-G.Chitic V.Chobanova S.Chol.k M.Chrz.sz.z.A.Chubykin P.Ciambrone M.F.Cical. X.Cid Vidal.G.Ciez.rek F.Cindol. P.E.l.Cl.rke M.Cl.mencic H.V.Cl.ff J.Cl.sier J.l.Cobbl.dick V.Coco J.A.B.Coel.o J.Cogan E.Cogneras l.Cojocariu P.Col.ins T.Col.mbo A.Comerma-Montel.s A.Contu N.Cooke G.Coombs S.Coquereau G.Corti C.M.Costa Sobral.B.Couturier D.C.Craik J.Crkovska A.Crocombe M.Cruz.Torres R.Currie C.l.Da Sil.a E.Dal.'Occo J.Dal.eno C.D' Centro Brasil.iro de Pesquisas Físicas(CBPF) Rio de JaneiroBrazil Universidade Federal.do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina School.of Physics State Key l.boratory of Nucl.ar Physics and Technol.gy Peking UniversityBeijingChina University of Chinese Academy of Sciences BeijingChina Institute Of High Energy Physics(IHEP) BeijingChina Institute of Particl. Physics Central China Normal UniversityWuhanHubeiChina Univ.Grenobl. Al.es Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance UniversitéCl.rmont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseil.e Univ CNRS/IN2P3CPPMMarseilleFrance l.l Univ.Paris-SudCNRS/IN2P3UniversitéParis-SaclayOrsayFrance l.NHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physikal.sches Institut RWTH Aachen UniversityAachenGermany Fakul.ät Physik Technische Universität DortmundDortmundGermany Max-Pl.nck-Institut für Kernphysik(MPIK) HeidelbergGermany Physikal.sches Institut Ruprecht-Karls-Universität HeidelbergHeidelbergGermany School.of Physics University College DublinDublinIreland INFN Sez.one di Bari BariItaly INFN Sez.one di Bol.gna BolognaItaly INFN Sez.one di Ferrara FerraraItaly INFN Sez.one di Firenz. FirenzeItaly INFN l.boratori Naz.onal. di Frascati FrascatiItaly INFN Sez.one di Genova GenovaItaly INFN Sez.one di Mil.no-Bicocca MilanoItaly INFN Sez.one di Mil.no MilanoItaly INFN Sez.one di Cagl.ari MonserratoItaly INFN Sez.one di Padova PadovaItaly INFN Sez.one di Pisa PisaItaly INFN Sez.one di Roma Tor Vergata RomaItaly INFN Sez.one di Roma l. Sapienz. RomaItaly Nikhef National.Institute for Subatomic Physics AmsterdamNetherlands Nikhef National.Institute for Subatomic Physics and VU University Amsterdam AmsterdamNetherlands Henryk Niewodnicz.nski Institute of Nucl.ar Physics Pol.sh Academy of Sciences KrakówPoland AGH-University of Science and Technol.gy Faculty of Physics and Applied Computer ScienceKrakówPoland Nationa

The production of ■baryons in proton-proton col.isions at a centre-of-mass energy of √s = 13 TeV is measured in the transverse-momentum range 4 详细信息

The production of ■baryons in proton-proton col.isions at a centre-of-mass energy of √s = 13 TeV is measured in the transverse-momentum range 4l.minosity of 1.7fb^-1,recorded by the l.Cb experiment during *** ratio of the ■ production cross-section times the branching fraction of the■→∧^+cK^-π^+ π^+decay rel.tive to the prompt ∧^+c production cross-section is found to be(2.22±0.27±0.29)×10^-4,assuming the central.val.e of the measured l.fetime,where the first uncertainty is statistical.and the second systematic.

关键词： doubl. charmed baryons hadron production QCD