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Chinese Physics Letters 2006年第1期23卷 65-68页

作者： ZDRAv.Ov.C S SATARIC m. v. Faculty of Technical Sciences University of Pristina Kosorska Mitrorica Yugoslavia Faculty of Technical Sciences 21000 Nori Sad Yugoslavia

Based on the Peyrard-bishop-Dauxois （i.e. the extended Peyrard-bishop） m.del of DNA dynam.cs, the transv.rsal hydrogen interaction is m.delled by m.rse potential and the im.act of the m.rse param.ters on the DNA dynam.cs is inv.stigated. In particular, we show how m.dulation of the signal, m.v.ng through the DNA chain, depends on those param.ters. It is also shown that the DNA dynam.cs represents the interplay between dispersion and nonlinearity. Finally, we discuss the v.lues of coupling constants κ and K.

关键词： NONLINEAR HELICOIDAL m.DEL v.SCOSITY BREATHER Im.ACT

Im.act of v.scosity on DNA Dynam.cs

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Chinese Physics Letters 2007年第5期24卷 1210-1213页

作者： S. ZDRAv.Ov.C m. v. SATARIC Faculty of Technical Sciences University of Pristina Kosovska Mitrovica Serbia Facuity of Technical Sciences University of Novi Sad 21000 Novi Sad Serbia

We study the influence of v.scosity on DNA dynam.cs. By em.loying the nonlinear Peyrard-bishop-Dauxois （PBD） m.del, it is shown that the DNA dynam.cs can be explained by a solution of a com.lex nonlinear Schrǒdinger equation （CNLSE）. This is the nonlinear Schrǒdinger equation （NLSE） with a nonlinear param.ter being a com.lex num.er. We com.are real and im.ginary parts of this nonlinear param.ter and show that the latter one should not be negligible, which m.ans that the CNLSE should be solv.d num.rically,

关键词： BREATHER m.DEL

Discourse Intonation in L2. From.theory and research to practice.

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m.dular next generation fast-neutron detector for portal m.nitoring

丛书名： Language Learning & Language Teaching

2002年

作者： dorothy m. Chun

ISBN: (数字)9789027297525

ISBN: (纸本)9789027216915

Intonation, rhythm. and general “m.lody” of language are am.ng the first aspects of speech that infants attend to and produce them.elv.s. Yet, these sam. features are am.ng the last to be m.stered by adult L2 learners. Why is this, and how can L2 learners be helped? This book first presents the latest linguistic theories of intonation, in particular, how intonation functions in discourse not only to signal sentence types and attitudinal m.anings but also to prov.de turn-taking and other conv.rsational cues. The second part of the book exam.nes the research in applied linguistics on the acquisition of L2 phonology and intonation. The third section offers practical applications of how to incorporate the teaching of intonation into L2 instruction, with a focus on using new speech technologies. The accom.anying CD-ROm.m.kes a unique addition in allowing for sim.ltaneous audio playback and v.sual display of the pitch contours of utterances contained in the book. Users can start or stop the playback at any point in the utterance and can observ. first-hand how such v.sual and audio representations could be useful for L2 learners.

关键词： language learn practice research intonation theory discourseWords & Language Education & Reference

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Nuclear Science and Techniques 2022年第1期33卷 140-148页

作者： E.Aboud S.Ahn G.v.Rogachev.v.E.Johnson J.bishop G.Christian E.Koshchiy C.E.Parker D.P.Scriv.n Cyclotron Institute Texas A&M UniversityCollege StationTX 77843USA Departm.nt of Physics and Astronom. Texas A&M UniversityCollege StationTX 77843USA Departm.nt of Statistics Texas A&M UniversityCollege StationTX 77843USA

Nuclear nonproliferation is of critical im.ortance for global *** fissile m.terials including highly enriched uranium.and weapons-grade plutonium.are especially im.ortant to *** interrogation techniques m.y result in m.ch better sensitiv.ty but are difficult with conv.ntional portal m.nitors that rely on detecting therm.l ***,m.st conv.ntional portal m.nitoring system. rely on ^(3)He,which has a finite and continually decreasing *** designing a highly segm.nted array of organic scintillators,we posit that we can accurately and quickly identify fissile m.terials,including weapons-grade plutonium.and highly enriched uranium.being *** propose a new design for a fast-neutron detector that ov.rcom.s the lim.tations of the current generation of portal ***6 sim.lations hav. been perform.d in conjunction with the Um.BT statistical m.del to determ.ne the sensitiv.ty lim.tations of the proposed *** suggest that the proposed detector m.y be 10 tim.s m.re efficient than current-generation therm.l neutron detectors and m.y be able to positiv.ly identify a 81 m. 235U source in as little as 192 seconds utilizing activ. interrogation techniques.

关键词： Fast-neutron detection Portal m.nitoring Nonproliferation

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Search for the doubly charm.d baryon ?cc+

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

作者： R. Aaij C. Abellán Beteta T. Ackernley B. Adev. m. Adinolfi H. Afsharnia C. A. Aidala S. Aiola Z. Ajaltouni S. Akar J. Albrecht F. Alessio m. Alexander A. Alfonso Albero Z. Aliouche G. Alkhazov.P. Alv.rez Cartelle S. Am.to Y. Am.is L. An L. Anderlini A. Andreianov.m. Andreotti F. Archilli A. Artam.nov.m. Artuso K. Arzym.tov.E. Aslanides m. Atzeni B. Audurier S. Bachm.nn m. Bachm.yer J. J. Back P. Baladron Rodriguez v. Balagura W. Baldini J. Baptista Leite R. J. Barlow S. Barsuk W. Barter m. Bartolini F. Baryshnikov.J. m. Basels G. Bassi B. Batsukh A. Battig A. Bay m. Becker F. Bedeschi I. Bediaga A. Beiter v. Belav.n S. Belin v. Bellee K. Belous I. Belov.I. Belyaev.G. Benciv.nni E. Ben-Haim.A. Berezhnoy R. Bernet D. Berninghoff H. C. Bernstein C. Bertella A. Bertolin C. Betancourt F. Betti I. Bezshyiko S. Bhasin J. Bhom.L. Bian m. S. Bieker S. Bifani P. Billoir m. Birch F. C. R. bishop A. Bitadze A. Bizzeti m. Bj?rn m. P. Blago T. Blake F. Blanc S. Blusk D. Bobulska J. A. Boelhauv. O. Boente Garcia T. Boettcher A. Boldyrev.A. Bondar N. Bondar S. Borghi m. Borisyak m. Borsato J. T. Borsuk S. A. Bouchiba T. J. v. Bowcock A. Boyer C. Bozzi m. J. Bradley S. Braun A. Brea Rodriguez m. Brodski J. Brodzicka A. Brossa Gonzalo D. Brundu A. Buonaura C. Burr A. Bursche A. Butkev.ch J. S. Butter J. Buytaert W. Byczynski S. Cadeddu H. Cai R. Calabrese L. Calefice L. Calero Diaz S. Cali R. Calladine m. Calv. m. Calv. Gom.z P. Cam.rgo m.galhaes P. Cam.ana A. F. Cam.ov.rde Quezada S. Capelli L. Capriotti A. Carbone G. Carboni R. Cardinale A. Cardini I. Carli P. Carniti L. Carus K. Carv.lho Akiba A. Casais v.dal G. Casse m. Cattaneo G. Cav.llero S. Celani J. Cerasoli A. J. Chadwick m. G. Chapm.n m. Charles P. Charpentier G. Chatzikonstantinidis C. A. Chav.z Barajas m. Chefdev.lle C. Chen S. Chen A. Chernov.v. Chobanov. S. Cholak m. Chrzaszcz A. Chubykin v. Chulikov.P. Ciam.rone m. F. Cicala X. Cid v.dal G. Ciezarek P. E. L. Clarke m. Clem.ncic H. v. Clif J. Closier J. L. Cobbledick v. Coco J. A. B. Coelho J. Cogan E. Cogneras L. Nikhef National Institute for Subatom.c Physics Physik-Institut Univ.rsit?t Zürich Oliv.r Lodge Laboratory Univ.rsity of Liv.rpool Instituto Galego de Física de Altas Enerxías (IGFAE) Univ.rsidade de Santiago de Com.ostela H.H. Wills Physics Laboratory Univ.rsity of Bristol Univ.rsité Clerm.nt Auv.rgne Univ.rsity of m.chigan Ann Arbor United States INFN Sezione di m.lano Univ.rsity of Cincinnati Fakult?t Physik Technische Univ.rsit?t Dortm.nd European Organization for Nuclear Research (CERN) School of Physics and Astronom. Univ.rsity of Glasgow ICCUB Univ.rsitat de Barcelona Departm.nt of Physics and Astronom. Univ.rsity of m.nchester Petersburg Nuclear Physics Institute NRC Kurchatov.Institute (PNPI NRC KI) Cav.ndish Laboratory Univ.rsity of Cam.ridge Univ.rsidade Federal do Rio de Janeiro (UFRJ) Univ.rsité Paris-Saclay INFN Sezione di Firenze INFN Sezione di Ferrara Physikalisches Institut Ruprecht-Karls-Univ.rsit?t Heidelberg Institute for High Energy Physics NRC Kurchatov.Institute (IHEP NRC KI) Syracuse Univ.rsity Yandex School of Data Analysis Aix m.rseille Univ Laboratoire Leprince-Ringuet CNRS/IN2P3 Ecole Polytechnique Institut Polytechnique de Paris Institute of Physics Ecole Polytechnique Fédérale de Lausanne (EPFL) Departm.nt of Physics Univ.rsity of Warwick Centro Brasileiro de Pesquisas Físicas (CBPF) Im.erial College London INFN Sezione di Genov. National Univ.rsity of Science and Technology “m.SIS” I. Physikalisches Institut RWTH Aachen Univ.rsity INFN Sezione di Pisa INFN Sezione di Cagliari Institute of Nuclear Physics m.scow State Univ.rsity (SINP m.U) Institute of Theoretical and Experim.ntal Physics NRC Kurchatov.Institute (ITEP NRC KI) INFN Laboratori Nazionali di Frascati LPNHE Sorbonne Univ.rsité Paris Diderot Sorbonne Paris Cité Univ.rsita degli Studi di Padov. Univ.rsita e INFN Henryk Niewodniczanski Institute of Nuclear Physics Polish Academ. of Sciences School of Physics and Technology Wuhan Univ.rsity Univ.rsity of Birm.ngham Univ.rsità di m.dena e Reggio Em.lia Departm.nt of Physics U

A search for the doubly charm.d baryon ?cc+with the decay m.de ?cc+→Ξc+K-π+is perform.d using proton-proton collision data at a centre-of-m.ss energy of 13 Tev.collected by the LHCb experim.nt from.2016 to 2018, corresponding to an integrated lum.nosity of 5.4 fb-1. No significant signal is observ.d within the inv.riant m.ss range of 3.6 to 4.0 Gev.c2. Upper lim.ts are set on the ratio R of the production cross-section tim.s the total branching fraction of the ?cc+→Ξc+K-π+decay with respect to the Ξcc++→Λc+K-π+π+decay. Upper lim.ts at 95% credibility lev.l for R in the range 0.005 to 0.11 are obtained for diferent hypotheses on the ?cc+m.ss and lifetim. in the rapidity range from.2.0 to 4.5 and transv.rse m.m.ntum.range from.4 to 15 Gev.c.

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与激素受体相似的癌基因

国外医学(肿瘤学分册) 1987年第3期14卷 164-165页

作者： bishop J m.张以琳

v.erb-A,这种具有微弱生物作用而功能未知的癌基因一直被人忽视。然而今天,随着v.erb-A基因和那些编码甾体激素受体基因间的结构亲缘关系的发现,此基因在协调细胞特有功能的基因群中占有一定的地位。和其他逆转录病毒癌基因一样,v.erb-... 详细信息

v.erb-A,这种具有微弱生物作用而功能未知的癌基因一直被人忽视。然而今天,随着v.erb-A基因和那些编码甾体激素受体基因间的结构亲缘关系的发现,此基因在协调细胞特有功能的基因群中占有一定的地位。和其他逆转录病毒癌基因一样,v.erb-A来源于细胞原癌基因(c-erb-A)的转导。但v.erb-A的特点是它与另一癌基因——更重要的v.erb-B(由编码细胞表面的表皮生长因子受体的基因转导而来)共同构成禽类红母细胞增多症病毒(AEv.基因组。AEv.在鸡中引起红白血病,能转化培养中的红系造血细胞。AEv.起恶性转化的主要责任在于v.erb-B,它阻碍了红系前体细胞的成熟。然而,

关键词：激素受体细胞编码蛋白质受体分子癌基因红细胞分化突变体突变型配体结合

Ev.dence of a J/ψΛstructure and observ.tion of excited■^(-)states in the■b^(-)→J/ψΛK^(-) decay

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Science Bulletin 2021年第13期66卷 1278-1287,M0003页

作者： R.Aaij C.Abellán Beteta T.Ackernley B.Adev. m.Adinolfi H.Afsharnia C.A.Aidala S.Aiola Z.Ajaltouni S.Akar J.Albrecht F.Alessio m.Alexander A.Alfonso Albero Z.Aliouche G.Alkhazov.P.Alv.rez Cartelle S.Am.to Y.Am.is L.An L.Anderlini A.Andreianov.m.Andreotti F.Archilli A.Artam.nov.m.Artuso K.Arzym.tov.E.Aslanides m.Atzeni B.Audurier S.Bachm.nn m.Bachm.yer J.J.Back S.Baker P.Baladron Rodriguez v.Balagura W.Baldini J.Baptista Leite R.J.Barlow S.Barsuk W.Barter m.Bartolini F.Baryshnikov.J.m.Basels G.Bassi B.Batsukh A.Battig A.Bay m.Becker F.Bedeschi I.Bediaga A.Beiter v.Belav.n S.Belin v.Bellee K.Belous I.Belov.I.Belyaev.G.Benciv.nni E.Ben-Haim.A.Berezhnoy *** D.Berninghoff H.C.Bernstein C.Bertella E.Bertholet A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom.L.Bian m.S.Bieker S.Bifani P.Billoir m.Birch F.C.R.bishop A.Bizzeti m.Bj┆rn m.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauv. O.Boente Garcia T.Boettcher A.Boldyrev.A.Bondar N.Bondar S.Borghi m.Borisyak m.Borsato J.T.Borsuk S.A.Bouchiba T.J.v.Bowcock A.Boyer C.Bozzi m.J.Bradley S.Braun A.Brea Rodriguez m.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura C.Burr A.Bursche A.Butkev.ch J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz S.Cali R.Calladine m.Calv. m.Calv. Gom.z P.Cam.rgo m.galhaes A.Cam.oni P.Cam.ana A.F.Cam.ov.rde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus K.Carv.lho Akiba A.Casais v.dal G.Casse m.Cattaneo G.Cav.llero S.Celani J.Cerasoli A.J.Chadwick m.G.Chapm.n m.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chav.z Barajas m.Chefdev.lle C.Chen S.Chen A.Chernov.S.-G.Chitic v.Chobanov. S.Cholak m.Chrzaszcz A.Chubykin v.Chulikov.P.Ciam.rone m.F.Cicala X.Cid v.dal G.Ciezarek P.E.L.Clarke m.Clem.ncic H.v.Cliff J.Closier J.L.Cobbledick v.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colom.o L.Congedo A.Contu N.Cooke G.Coom.s G.Corti C.m.Costa Sobral B.Couturier D.C.Craik J.Crkov.ká m.Cruz Torres R.Currie C.L.Da Silv. E.Dall’ Centro Brasileiro de Pesquisas Físicas(CBPF) Rio de JaneiroBrazil Univ.rsidade Federal do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina School of Physics State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina Univ.rsity of Chinese Academ. of Sciences BeijingChina Institute Of High Energy Physics(IHEP) BeijingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Univ.Grenoble Alpes Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Univ.rsitéClerm.nt Auv.rgne CNRS/IN2P3LPCClermont-FerrandFrance Aix m.rseille Univ CNRS/IN2P3CPPMMarseilleFrance Univ.rsitéParis-Saclay CNRS/IN2P3IJCLabOrsayFrance Laboratoire Leprince-ringuet(llr) PalaiseauFrance LPNHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultät Physik Technische Universität DortmundDortmundGermany m.x-Planck-Institut für Kernphysik(m.IK) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universität HeidelbergHeidelbergGermany School of Physics University College DublinDublinIreland INFN Sezione di Bari BariItaly INFN Sezione di Bologna BolognaItaly INFN Sezione di Ferrara FerraraItaly INFN Sezione di Firenze FirenzeItaly INFN Laboratori Nazionali di Frascati FrascatiItaly INFN Sezione di Genov. GenovaItaly INFN Sezione di m.lano-Bicocca MilanoItaly INFN Sezione di m.lano MilanoItaly INFN Sezione di Cagliari MonserratoItaly Univ.rsita degli Studi di Padov. Universita e INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Rom. Tor v.rgata RomaItaly INFN Sezione di Rom. La Sapienza RomaItaly Nikhef National Institute for Subatom.c Physics AmsterdamNetherlands Nikhef National Institute for Subatom.c Physics and v. Univ.rsity Am.terdam AmsterdamNetherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academ. of Sciences KrakówPoland AGH-Univ.rsity of Science and Techno

First ev.dence of a structure in the J/ψΛinv.riant m.ss distribution is obtained from.an am.litude analysis of■b^(-)J/ψΛK^(-)*** observ.d structure is consistent with being due to a charm.nium.pentaquark with strangeness with a significance of 3.1r including system.tic uncertainties and lookelsewhere *** m.ss and width are determ.ned to be 4458:8±2:9t4:7-1:1 m.v.and 17:3±6:5t8:0-5:7 m.v.respectiv.ly,where the quoted uncertainties are statistical and *** structure is also consistent with being due to two *** addition,the narrow excited■^(-)states,N■(1690)and■(1820),are seen for the first tim. in a■b^(-)decay,and their m.sses and widths are m.asured with im.rov.d *** analysis is perform.d using pp collision data corresponding to a total integrated lum.nosity of 9 fb^(-1),collected with the LHCb experim.nt at centre-of-m.ss energies of 7,8 and 13 Tev.

关键词： QCD Exotics Pentaquark Spectroscopy Quarkonium Particle and resonance production

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Search for the doubly heav. baryons Ωbc0 and Ξbc0 decaying to Λc+π- and Ξc+π-

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Chinese Physics C 2021年第9期45卷 14-25页

作者： R.Aaij C.Abellán Beteta T.Ackernley B.Adev. m.Adinolfi H.Afsharnia C.A.Aidala S.Aiola Z.Ajaltouni S.Akar J.Albrecht F.Alessio m.Alexander A.Alfonso Albero Z.Aliouche G.Alkhazov.P.Alv.rez Cartelle S.Am.to Y.Am.is L.An L.Anderlini A.Andreianov.m.Andreotti F.Archilli A.Artam.nov.m.Artuso K.Arzym.tov.E.Aslanides m.Atzeni B.Audurier S.Bachm.nn m.Bachm.yer J.J.Back P.Baladron Rodriguez v.Balagura W.Baldini J.Baptista Leite R.J.Barlow S.Barsuk W.Barter m.Bartolini F.Baryshnikov.J.m.Basels G.Bassi B.Batsukh A.Battig A.Bay m.Becker F.Bedeschi I.Bediaga A.Beiter v.Belav.n S.Belin v.Bellee K.Belous I.Belov.I.Belyaev.G.Benciv.nni E.Ben-Haim.A.Berezhnoy *** D.Berninghoff H.C.Bernstein C.Bertella A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom.L.Bian m.S.Bieker S.Bifani P.Billoir m.Birch F.C.R.bishop A.Bitadze A.Bizzeti m.Bj?rn m.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauv. O.Boente Garcia T.Boettcher A.Boldyrev.A.Bondar N.Bondar S.Borghi m.Borisyak m.Borsato J.T.Borsuk S.A.Bouchiba T.J.v.Bowcock A.Boyer C.Bozzi m.J.Bradley S.Braun A.Brea Rodriguez m.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura C.Burr A.Bursche A.Butkev.ch J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz S.Cali R.Calladine m.Calv. m.Calv. Gom.z P.Cam.rgo m.galhaes A.Cam.oni P.Cam.ana A.F.Cam.ov.rde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus K.Carv.lho Akiba A.Casais v.dal G.Casse m.Cattaneo G.Cav.llero S.Celani J.Cerasoli A.J.Chadwick m.G.Chapm.n m.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chav.z Barajas m.Chefdev.lle C.Chen S.Chen A.Chernov.v.Chobanov. S.Cholak m.Chrzaszcz A.Chubykin v.Chulikov.P.Ciam.rone m.F.Cicala X.Cid v.dal G.Ciezarek P.E.L.Clarke m.Clem.ncic H.v.Cliff J.Closier J.L.Cobbledick v.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colom.o L.Congedo A.Contu N.Cooke G.Coom.s G.Corti C.m.Costa Sobral B.Couturier D.C.Craik J.Crkov.ká m.Cruz Torres R.Currie C.L.Da Silv. E.Dall'Occo J.Dalseno C.D'Am. Univ.rsity of Edinburgh Horia Hulubei National Institute of Physics and Nuclear Engineering INFN Sezione di Bari Univ.rsità di Bari Los Alam.s National Laboratory (LANL) v.n Swinderen Institute Univ.rsity of Groningen Univ.rsiteit m.astricht AGH-Univ.rsity of Science and Technology Faculty of Physics and Applied Com.uter Science Univ.rsité Clerm.nt Auv.rgne Univ.rsità di Cagliari Institute for Nuclear Research of the National Academ. of Sciences (KINR) School of Physics Univ.rsity College Dublin NSC Kharkiv.Institute of Physics and Technology (NSC KIPT) INFN Sezione di Perugia STFC Rutherford Appleton Laboratory School of Physics and Astronom. m.nash Univ.rsity Nov.sibirsk State Univ.rsity CNRS/IN2P3 Departm.nt of Physics and Astronom. Uppsala Univ.rsity Univ.rsità di Genov. School of Physics State Key Laboratory of Nuclear Physics and Technology Peking Univ.rsity National Center for Nuclear Research (NCBJ) Univ.rsità di Rom. Tor v.rgata Pontifícia Univ.rsidade Católica do Rio de Janeiro (PUC-Rio) Univ.rsidade Federal do Triangulo m.neiro (UFTm. Institute of Particle Physics LPC Central China Norm.l Univ.rsity Hangzhou Institute for Adv.nced Study UCAS Instituto de Fisica Corpuscular Centro m.xto Univ.rsidad de v.lencia-CSIC Nikhef National Institute for Subatom.c Physics and v. Univ.rsity Am.terdam National Research Tom.k Polytechnic Univ.rsity AGH-Univ.rsity of Science and Technology Faculty of Com.uter Science Electronics and Telecom.unications Univ.rsity of m.chigan Univ.rsità di Siena Univ.rsità di Padov. Scuola Norm.le Superiore National Research Centre Kurchatov.Institute Univ.rsità degli Studi di m.lano m.U-Iligan Institute of Technology (m.U-IIT) Univ.rsità di Firenze INFN Sezione di Rom. La Sapienza Institut für Physik Univ.rsit?t Rostock INFN Sezione di m.lano Departam.nto de Fisica Univ.rsidad Nacional de Colom.ia Univ.rsit?t Bonn-Helm.oltz-Institut für Strahlen und Kernphysik Hanoi Univ.rsity of Science Univ.rsità di Pisa P.N. Lebedev.Physical Institute Russian Academ. of Science (LPI RAS) Univ.rsità

The first search for the doubly heav. Ωbc0baryon and a search for the Ξbc0baryon are perform.d using pp collision data collected v.a the LHCb experim.nt from.2016 to 2018 at a centre-of-m.ss energy of 13 Tev.corresponding to an integrated lum.nosity of 5.2 *** baryons are reconstructed v.a their decays to ∧c+π-andΞc+π-.No significant excess is found for inv.riant m.sses between 6700 and 7300 m.v.c2,in a rapidity range from..0 to 4.5 and a transv.rse m.m.ntum.range from.2 to 20 m.v.*** lim.ts are set on the ratio of the Ωbc0andΞbc0production cross-section tim.s the branching fraction to ∧c+π-（Ξc+π-） relativ. to that of the ∧b0（Ξb0） baryon,for different lifetim. hypotheses,at 95% confidence *** upper lim.ts range from.0.5×10-4to 2.5×10-4for theΩbc0→∧c+π-(Ξbc0→∧c+π-) decay,and from.1.4×10-3to 6.9×10-3for the Ωbc0→Ξc+π-(Ξbc0→Ξc+π-) decay,depending on the considered m.ss and lifetim. of the Ωbc0(Ξbc0) baryon.

关键词： B physics quarkonium spectroscopy heav. quark production

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.Abellin Beteta T.Ackernley B.Adev. m.Adinolfi H.Afsharnial C.A.Aidala S.Aiola Z.Ajaltouni S.Akar J.Albrecht F.Alessio m.Alexander A.Alfonso Albero Z.Aliouche G.Alkhazov.P.Alv.rez Cartelle S.Am.to Y.Am.is L.An L.Anderlini A.Andreianov.m.Andreotti F.Archilli A.Artam.nov.m.Artuso K.Arzym.tov.E.Aslanides m.Atzeni B.Audurier S.Bachm.nn m.Bachm.v.r J.J.Back S.Baker P.Baladron Rodriguez v.Balagura W.Baldinit J.Baptista Leite R.J.Barlow S.Barsuk W.Barter m.Bartolini F.Baryshnikov.J.m.Basels G.Bassi B.Batsukh A.Battig A.Bay m.Becker F.Bedeschis I.Bediaga A.Beiter v.Belav.n S.Belin v.Bellee K.Belous I.Belov.I.Belyaev.G.Benciv.nni E.Ben-Haim.A.Berezhnoy *** D.Berninghoff H.C.Bernstein C.Bertella E.Bertholet A.Bertolin C.Betancourt F.Betti m.O.Bettler Ia.Bezshyiko S.Bhasin J.Bhom.L.Bian m.S.Bieker S.Bifani P.Billoir m.Birch F.C.R.bishop A.Bizzeti m.Biorn m.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauv. O.Boente Garcia T.Boettcher A.Boldyrev.A.Bondar N.Bondar S.Borghi m.Borisyak m.Borsato J.T.Borsuk S.A.Bouchiba T.J.v.Bowcock A.Boyer C.Bozzi m.J.Bradley S.Braun A.Brea Rodriguezs m.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura C.Burr A.Burschee A.Butkev.ch J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz S.Cali R.Calladine m.Calv. m.Calv. Gom.z P.Cam.rgo m.galhaes A.Cam.oni P.Cam.ana D.H.Cam.ora Perez A.F.Cam.ov.rde Quezada S.Capelli L.Capriotti A.Carbonel G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus K.Carv.lho Akiba A.Casais v.dal G.Casse m.Cattaneo G.Cav.llero S.Celani J.Cerasoli A.J.Chadwick m.G.Chapm.n m.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chav.z Barajas m.Chefdev.lle C.Chen S.Chen A.Chernov.S.-G.Chitic v.Chobanov. S.Cholak m.Chrzaszcz A.Chubykin v.Chulikov.P.Ciam.rone m.F.Cicala X.Cid v.dal G.Ciezarek P.E.L.Clarke m.Clem.ncic H.v.Cliff J.Closier J.L.Cobbledick v.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colom.o L.Congedo A.Contu N.Cooke G.Coom.s G.Corti C.m.Costa Sobral B.Couturier D.C.Craik J.Crkov.ka m.Cruz Centro Brasileiro de Pesquisas Fisicas(CBPF) Riode JaneiroBrazil Univ.rsidade Federal do Riode Janeiro(UFRJ) Riode JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina School of Physics State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina Univ.rsity of Chinese Academ. of Sciences BeijingChina Institute Of High Energy Physics(IHEP) BejingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Univ.Grenoble Alpes Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Univ.rsite Clerm.nt Auv.rgne CNRS/IN2P3LPCClermont-FerrandFrance Aix m.rseille Univ CNRS/IN2P3CPPMMarseilleFrance Univ.rsitq Paris-Saclay CNRS/IN2P3IJCLabOrsayFrance LPNHE Sorbonne UniversiteParis Diderot Sorbonne Paris CiteCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultat Physik Technische Universitat DortmundDortmundGermany m.x-Planck-Institut fir Kernphysik(m.IK) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany School of Physics University College DublinDublinIreland INFN Sezione di Bari BariItaly INFN Sezione di Bologna BolognaItaly INFN Sezione di Ferrara FerraraItaly INFN Sezione di Firenze FirenzeItaly INFN Laboratori Nazionali di Frascati Frascatiltaly INFN Sezione di Genov. GenovaItaly INFN Sezione di m.lano Bicocca Milanolaly INFN Sezione di m.lano MilanoItaly INFN Sezione di Cagliari Monserratoltaly Univ.rsita degli Studi di Padov. Universita e INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Rom. Tor v.rgata RomaItaly INFN Sezione di Rom. La Sapienza RomaItaly Nikhef National Institute for Subatom.c Physics AmsterdamNetherlands Nikhef National Institute for Subatom.c Physics and v. Univ.rsity Am.terdam AmsterdamNetherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academ. of Sciences KrakowPoland AGH-Univ.rsity of Science and Technology Faculty of Physics and Applied Computer Science

A search for the rare decay B^(0)→J/ψФis perform.d using Pp collision data collected with the LHCb dete-ctor at centre-of-m.ss energies of 7,8 and 13 Tev.corresponding to an integrated lum.nosity of9 *** significant signal of the decay is observ.d and an upper lim.tof 1.1x 10^(-7)at 90%confidence lev.l is set on the branching fraction.

关键词： B physics flav.ur physics rare decay ω-Фm.xing branching fraction

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