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search for the doubly heavy baryons Ωbc0 and Ξbc0 decaying to Λc+π- and Ξc+π-

Chinese Physics C 2021年第9期45卷 14-25页

作者： R.Aaij C.Abellán Beteta T.Ackernley B.Adeva 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.Alvarez Cartelle s.Amato Y.Amhis L.An L.Anderlini A.Andreianov M.Andreotti F.Archilli A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier s.Bachmann M.Bachmayer 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.Belavin s.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Bencivenni 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.Boelhauve 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.Butkevich J.s.Butter J.Buytaert W.Byczynski s.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz s.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes A.Camboni P.Campana A.F.Campoverde Quezada s.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero s.Celani J.Cerasoli A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chavez Barajas M.Chefdeville C.Chen s.Chen A.Chernov V.Chobanova s.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs G.Corti C.M.Costa sobral B.Couturier D.C.Craik J.Crkovská M.Cruz Torres R.Currie C.L.Da silva E.Dall'Occo J.Dalseno C.D'Amb University of Edinburgh Horia Hulubei National Institute of Physics and Nuclear Engineering INFN sezione di Bari Università di Bari Los Alamos National Laboratory (LANL) Van swinderen Institute University of Groningen Universiteit Maastricht AGH-University of science and Technology Faculty of Physics and Applied Computer science Université Clermont Auvergne Università di Cagliari Institute for Nuclear Research of the National Academy of sciences (KINR) school of Physics University College Dublin NsC Kharkiv Institute of Physics and Technology (NsC KIPT) INFN sezione di Perugia sTFC Rutherford Appleton Laboratory school of Physics and Astronomy Monash University Novosibirsk state University CNRs/IN2P3 department of Physics and Astronomy Uppsala University Università di Genova school of Physics state Key Laboratory of Nuclear Physics and Technology Peking University National Center for Nuclear Research (NCBJ) Università di Roma Tor Vergata Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Universidade Federal do Triangulo Mineiro (UFTM) Institute of Particle Physics LPC Central China Normal University Hangzhou Institute for Advanced study UCAs Instituto de Fisica Corpuscular Centro Mixto Universidad de Valencia-CsIC Nikhef National Institute for subatomic Physics and VU University Amsterdam National Research Tomsk Polytechnic University AGH-University of science and Technology Faculty of Computer science Electronics and Telecommunications University of Michigan Università di siena Università di Padova scuola Normale superiore National Research Centre Kurchatov Institute Università degli studi di Milano MsU-Iligan Institute of Technology (MsU-IIT) Università di Firenze INFN sezione di Roma La sapienza Institut für Physik Universit?t Rostock INFN sezione di Milano departamento de Fisica Universidad Nacional de Colombia Universit?t Bonn-Helmholtz-Institut für strahlen und Kernphysik Hanoi University of science Università di Pisa P.N. Lebedev Physical Institute Russian Academy of science (LPI RAs) Università

The first search for the doubly heavy Ωbc0baryon and a search for the Ξbc0baryon are performed using pp collision data collected via the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of 13 TeV,corresponding to an integrated luminosity of 5.2 *** baryons are reconstructed via their decays to ∧c+π-andΞc+π-.No significant excess is found for invariant masses between 6700 and 7300 MeV/c2,in a rapidity range from2.0 to 4.5 and a transverse momentum range from 2 to 20 MeV/*** limits are set on the ratio of the Ωbc0andΞbc0production cross-section times the branching fraction to ∧c+π-（Ξc+π-） relative to that of the ∧b0（Ξb0） baryon,for different lifetime hypotheses,at 95% confidence *** upper limits 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 cons.dered mass and lifetime of the Ωbc0(Ξbc0) baryon.

关键词： B physics quarkonium spectroscopy heavy quark production

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search for the rare decays W^(+)→D_(s)^(+)γ and Z→D^(0)γ at LHCb

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中国物理C:英文版 2023年第9期47卷 14-26页

作者： R.Aaij A.s.W.Abdelmotteleb C.Abellan Beteta F.Abudinén T.Ackernley B.Adeva M.Adinolfi P.Adlarson H.Afsharnia C.Agapopoulou C.A.Aidala Z.Ajaltouni s.Akar K.Akiba J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche P.Alvarez Cartelle R.Amalric s.Amato J.L.Amey Y.Amhis L.An L.Anderlini M.Andersson A.Andreianov M.Andreotti D.Andreou D.Ao F.Archilli A.Artamonov M.Artuso E.Aslanides M.Atzeni B.Audurier s.Bachmann M.Bachmayer J.J.Back A.Bailly-reyre P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista de souza Leite M.Barbetti R.J.Barlow s.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay A.Beck M.Becker F.Bedeschi I.B.Bediaga A.Beiter V.Belavin s.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Benane G.Bencivenni E.Ben-Haim A.Berezhnoy *** *** Andres D.Berninghoff H.C.Bernstein C.Bertella A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko s.Bhasin J.Bhom L.Bian M.s.Bieker N.V.Biesuz s.Bifani P.Billoir A.Biolchini M.Birch F.C.R.Bishop A.Bitadze A.Bizzeti M.P.Blago T.Blake F.Blanc J.E.Blank s.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev C.s.Bolognani R.Bolzonella N.Bondar F.Borgato s.Borghi M.Borsato J.T.Borsuk s.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi M.J.Bradley s.Braun A.Brea Rodriguez J.Brodzicka A.Brossa Gonzalo J.Brown D.Brundu A.Buonaura L.Buonincontri A.T.Burke C.Burr A.Bursche A.Butkevich J.s.Butter J.Buytaert W.Byczynski s.Cadeddu H.Cai R.Calabrese L.Calefice s.Cali R.Calladine M.Calvi M.Calvo Gomez P.Campana D.H.Campora Perez A.F.Campoverde Quezada s.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini P.Carniti L.Carus A.Casais Vidal R.Caspary G.Casse M.Cattaneo G.Cavallero V.Cavallini s.Celani J.Cerasoli D.Cervenkov A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier C.A.Chavez Barajas M.Chefdeville C.Chen s.Chen A.Chernov s.Chernyshenko V.Chobanova s.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek G.Ciullo P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cognera Centro Brasileiro 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 Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina University of Chinese Academy of sciences BeijingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Université savoie Mont Blanc CNRSIN2P3-LAPPAnnecyFrance UniversitéClermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance UniversitéParis-saclay CNRS/IN2P3IJCLabOrsayFrance Laboratoire Leprince-Ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance LPNHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultat Physik Technische Universitat DortmundDortmundGermany Max-Planck-Institut für Kernphysik(MPIK) 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 FrascatiItaly INFN sezione di Genova GenovaItaly INFN sezione di Milano MilanoItaly INFN sezione di Milano-Bicocca MilanoItaly INFN sezione di Cagliari MonserratoItaly Universitàdegli studi di Padova Universitàe INFNPadovaPadovaItaly INFN sezione di Pisa PisaItaly INFN sezione di Roma La sapienza RomaItaly INFN sezione 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 Technology Faculty of Physics and Applied Computer Scienc

A search for the rare decays W^(+)→D_(s)^(+)γ and Z→D0γis performed using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13TeV,corresponding to an integrated luminosity of 2.0fb−*** significant signal is observed for either decay mode and upper limits on their branching fractions are set using W^(+)→D_(s)^(+)γ and Z→μ+μ−decays as normalization *** upper limits are 6.5×10^(−4) and 2.1×10^(−3) at 95% confidence level 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,while the upper limit on the W+→D+sγbranching fraction improves upon the previous best limit.

关键词： W/Z boson rare decay upper limit of branching fraction

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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.Abellin Beteta T.Ackernley B.Adeva 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.Alvarez Cartelle s.Amato Y.Amhis L.An L.Anderlini A.Andreianov M.Andreotti F.Archilli A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier s.Bachmann M.Bachmaver 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.Belavin s.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Bencivenni 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.Boelhauve 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.Butkevich J.s.Butter J.Buytaert W.Byczynski s.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz s.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes A.Camboni P.Campana D.H.Campora Perez A.F.Campoverde Quezada s.Capelli L.Capriotti A.Carbonel G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero s.Celani J.Cerasoli A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chavez Barajas M.Chefdeville C.Chen s.Chen A.Chernov s.-G.Chitic V.Chobanova s.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs G.Corti C.M.Costa sobral B.Couturier D.C.Craik J.Crkovska M.Cruz Centro Brasileiro 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 Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina University of Chinese Academy 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 Universite Clermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance Universitq Paris-saclay CNRS/IN2P3IJCLabOrsayFrance LPNHE Sorbonne UniversiteParis Diderot Sorbonne Paris CiteCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultat Physik Technische Universitat DortmundDortmundGermany Max-Planck-Institut fir Kernphysik(MPIK) 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 Genova GenovaItaly INFN sezione di Milano Bicocca Milanolaly INFN sezione di Milano MilanoItaly INFN sezione di Cagliari Monserratoltaly Universita degli studi di Padova Universita e INFNPadovaPadovaItaly INFN sezione di Pisa PisaItaly INFN sezione di Roma Tor Vergata RomaItaly INFN sezione di Roma La sapienza RomaItaly Nikhef National Institute for subatomic Physics AmsterdamNetherlands Nikhef National Institute for subatomic Physics and VU University Amsterdam AmsterdamNetherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of sciences KrakowPoland AGH-University of science and Technology Faculty of Physics and Applied Computer Science

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

关键词： B physics flavour physics rare decay ω-Фmixing branching fraction

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Home,dirty home:effect of old nest material on nest-site selection and breeding performance in a cavity-nesting raptor

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Current Zoology 2018年第6期64卷 693-702页

作者： stefano PODOFILLINI Jacopo G.CECERE Matteo GRIGGIO Andrea CURCIO Enrico L de capua Egidio FULCO simone PIRRELLO Nicola sAINO Lorenzo sERRA Matteo VIsCEGLIA Diego RUBOLINI Dipartimento di scienze e Politiche Ambientali Universita degli Studi di Milanovia Celoria 26MilanoI-20133Italy Istituto superiore per la Protezione e la Ricerca Ambientale (IsPRA) Ozzano Emilia (BO)Italy Dipartimento di Biologia Universita degli Studi di PadovaItaly Provincia di Matera -Parco della Murgia Materana Italy studio Naturalistico Milvus Pignola (PZ)Italy de Rerum Natura Montescaglioso (MT)Italy

The quality of a breeding site may have major fitness consequences.A fundamental step to understanding the process of nest-site selection is the identification of the information individuals use to choose high-quality nest *** secondary cavity-nesting bird species that do not add nest lining material,organic remains (faeces,pellets)accumulated ins.de nest cavities during previous breeding events may be a cue for high-quality nest-sites,as they contain information about past successful breeding and may improve thermal insulation of eggs during ***,cavities in which breeding was successful might also contain more nest-dwelling ectoparasites than unoccupied cavities, offering an incentive for prospective parents to avoid *** exposed breeding cavity-nesting lesser kestrels (Falco naumanni)to nestbox dyads consisting of a dirty (with a thick layer of organic substrate) and a clean nestbox (without organic material).Dirty nestboxes were strongly preferred,being occupied earlier and more frequently than clean *** success in dirty nestboxes was significantly higher than in clean ones,suggesting a positive effect of organic nest material on incubation efficiency, while nestbox dirtiness did not significantly affect clutch and brood *** from dirty nestboxes had significantly higher ectoparasite load than those from clean nestboxes soon after egg hatching,but this difference was not evident a few days *** substrate did not significantly affect nestling *** concluded that nest substrate is a key driver of nest-site choice in lesser kestrels,although the adaptive value of such a strong preference appears elusive and may be context-dependent.

关键词： Camus hemapterus ectoparasites nestbex nest substrate nest-site selection

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Measurement of Ξcc++ production in pp collisions 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.Abellán Beteta T.Ackernley B.Adeva M.Adinolfi H.Afsharnia C.A.Aidala s.Aiola Z.Ajaltouni s.Akar P.Albicocco J.Albrecht F.Alessio M.Alexander A.Alfonso Albero G.Alkhazov P.Alvarez Cartelle A.A.Alves Jr s.Amato Y.Amhis L.An L.Anderlini G.Andreassi M.Andreotti F.Archilli A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier s.Bachmann J.J.Back s.Baker V.Balagura W.Baldini A.Baranov R.J.Barlow s.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi V.Batozskaya B.Batsukh A.Battig A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter L.J.Bel V.Belavin s.Belin V.Bellee K.Belous I.Belyaev G.Bencivenni E.Ben-Haim s.Benson s.Beranek 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 M.s.Bieker s.Bifani P.Billoir A.Bizzeti M.Bjørn M.P.Blago T.Blake F.Blanc s.Blusk D.Bobulska V.Bocci O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar s.Borghi M.Borisyak M.Borsato J.T.Borsuk T.J.V.Bowcock C.Bozzi M.J.Bradley s.Braun A.Brea Rodriguez M.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu E.Buchanan A.Buonaura C.Burr A.Bursche A.Butkevich J.s.Butter J.Buytaert W.Byczynski s.Cadeddu H.Cai R.Calabrese L.Calero Diaz s.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes A.Camboni P.Campana D.H.Campora Perez A.F.Campoverde Quezada L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero s.Celani R.Cenci J.Cerasoli M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis M.Chefdeville V.Chekalina C.Chen s.Chen A.Chernov s.-G.Chitic V.Chobanova s.Cholak M.Chrzaszcz A.Chubykin P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek F.Cindolo P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo A.Comerma-Montells 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 silva E.Dall'Occo J.Dalseno C.D' Centro Brasileiro 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 Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina University of Chinese Academy 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 UniversitéClermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance LAL Univ.Paris-SudCNRS/IN2P3UniversitéParis-SaclayOrsayFrance LPNHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultät Physik Technische Universität DortmundDortmundGermany Max-Planck-Institut für Kernphysik(MPIK) 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 Genova GenovaItaly INFN sezione di Milano-Bicocca MilanoItaly INFN sezione di Milano MilanoItaly INFN sezione di Cagliari MonserratoItaly INFN sezione di Padova PadovaItaly INFN sezione di Pisa PisaItaly INFN sezione di Roma Tor Vergata RomaItaly INFN sezione di Roma La sapienza RomaItaly Nikhef National Institute for subatomic Physics AmsterdamNetherlands Nikhef National Institute for subatomic Physics and VU University Amsterdam AmsterdamNetherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of sciences KrakówPoland AGH-University of science and Technology Faculty of Physics and Applied Computer ScienceKrakówPoland Nationa

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

The production of ■baryons in proton-proton collisions at a centre-of-mass energy of √s = 13 TeV is measured in the transverse-momentum range 4sed in this measurement correspond to an integrated luminosity of 1.7fb^-1,recorded by the LHCb experiment during *** ratio of the ■ production cross-section times the branching fraction of the■→∧^+cK^-π^+ π^+decay relative to the prompt ∧^+c production cross-section is found to be(2.22±0.27±0.29)×10^-4,assuming the central value of the measured lifetime,where the first uncertainty is statistical and the second systematic.

关键词： doubly charmed baryons hadron production QCD

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search for the doubly 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.Abellán Beteta T.Ackernley B.Adeva M.Adinolfi H.Afsharnia C.A.Aidala s.Aiola Z.Ajaltouni s.Akar P.Albicocco J.Albrecht F.Alessio M.Alexander A.Alfonso Albero G.Alkhazov P.Alvarez Cartelle A.A.Alves Jr s.Amato Y.Amhis L.An L.Anderlini G.Andreassi M.Andreotti F.Archilli J.Arnau Romeu A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier s.Bachmann J.J.Back s.Baker V.Balagura W.Baldini A.Baranov R.J.Barlow s.Barsuk W.Barter M.Bartolini F.Baryshnikov G.Bassi V.Batozskaya B.Batsukh A.Battig V.Battista A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter L.J.Bel V.Belavin s.Belin N.Beliy V.Bellee K.Belous I.Belyaev G.Bencivenni E.Ben-Haim s.Benson s.Beranek A.Berezhnoy *** D.Berninghoff H.C.Bernstein E.Bertholet A.Bertolin C.Betancourt F.Betti M.O.Bettler Ia.Bezshyiko s.Bhasin J.Bhom M.s.Bieker s.Bifani P.Billoir A.Birnkraut A.Bizzeti M.Bjφrn M.P.Blago T.Blake F.Blanc s.Blusk D.Bobulska V.Bocci O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar s.Borghi M.Borisyak M.Borsato J.T.Borsuk T.J.V.Bowcock C.Bozzi s.Braun A.Brea Rodriguez M.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu E.Buchanan A.Buonaura C.Burr A.Bursche J.s.Butter J.Buytaert W.Byczynski s.Cadeddu H.Cai R.Calabrese s.Cali R.Calladine M.Calvi M.Calvo Gomez A.Camboni P.Campana D.H.Campora Perez L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini P.Carniti K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero R.Cenci J.Cerasoli M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis M.Chefdeville V.Chekalina C.Chen s.Chen A.Chernov s.-G.Chitic V.Chobanova M.Chrzaszcz A.Chubykin P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek F.Cindolo P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo A.Comerma-Montells 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 silva E.Dall'Occo J.Dalseno C.D'Ambrosio A.Danilina P.d'Argent A.Davis O.de Aguiar Francisco K.de Bruyn s.de capua M Centro Brasileiro 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 Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina University of Chinese Academy 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 Universite Clermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance LAL Univ.Paris-SudCNRS/IN2P3Universite Paris-SaclayOrsayFrance LPNHE Sorbonne Universite Paris Diderot Sorbonne Paris Cite CNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultat Physik Technische Universitat DortmundDortmundGermany Max-Planck-Institut für Kernphysik(MPIK) 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 FrascatiItaly INFN sezione di Genova GenovaItaly INFN sezione di Milano-Bicocca MilanoItaly INFN sezione di Milano MilanoItaly INFN sezione di Cagliari MonserratoItaly INFN sezione di Padova PadovaItaly INFN sezione di Pisa PisaItaly INFN sezione di Roma Tor Vergata RomaItaly INFN sezione di Roma La sapienza RomaItaly Nikhef National Institute for subatomic Physics AmsterdamNetherlands Nikhef National Institute for subatomic Physics and VU University Amsterdam AmsterdamNetherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of sciences KrakowPoland AGH-University of science and Technology Faculty of Physics and Applied Computer ScienceKrakowPoland Natio

A search for the doubly charmed baryon ■^+cc is performed through its.decay to theΛ^+c K^-π^+ final state,using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7,8 and 13 *** data correspond to a total integrated luminosity of 9 fb^-*** significant signal is observed in the mass range from 3.4 to 3.8 GeV/c^*** limits are set at 95%credibility level on the ratio of the ■^+cc production cross-section times the branching fraction to that ofΛ^+c and ■^++cc *** limits are determined as functions of the ■^+cc mass for different lifetime 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 limits on production of particles charmed quarks experimental tests

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Evidence of a J/ψΛstructure and observation 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.Adeva 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.Alvarez Cartelle s.Amato Y.Amhis L.An L.Anderlini A.Andreianov M.Andreotti F.Archilli A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier s.Bachmann M.Bachmayer 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.Belavin s.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Bencivenni 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.Boelhauve 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.Butkevich J.s.Butter J.Buytaert W.Byczynski s.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz s.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes A.Camboni P.Campana A.F.Campoverde Quezada s.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero s.Celani J.Cerasoli A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chavez Barajas M.Chefdeville C.Chen s.Chen A.Chernov s.-G.Chitic V.Chobanova s.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs G.Corti C.M.Costa sobral B.Couturier D.C.Craik J.Crkovská M.Cruz Torres R.Currie C.L.Da silva E.Dall’ Centro Brasileiro 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 Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina University of Chinese Academy 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 UniversitéClermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance UniversitéParis-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 Max-Planck-Institut für Kernphysik(MPIK) 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 Genova GenovaItaly INFN sezione di Milano-Bicocca MilanoItaly INFN sezione di Milano MilanoItaly INFN sezione di Cagliari MonserratoItaly Universita degli studi di Padova Universita e INFNPadovaPadovaItaly INFN sezione di Pisa PisaItaly INFN sezione di Roma Tor Vergata RomaItaly INFN sezione di Roma La sapienza RomaItaly Nikhef National Institute for subatomic Physics AmsterdamNetherlands Nikhef National Institute for subatomic Physics and VU University Amsterdam AmsterdamNetherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of sciences KrakówPoland AGH-University of science and Techno

First evidence of a structure in the J/ψΛinvariant mass distribution is obtained from an amplitude analysis of■b^(-)J/ψΛK^(-)*** observed structure is consistent with being due to a charmonium pentaquark with strangeness with a significance of 3.1r including systematic uncertainties and lookelsewhere *** mass and width are determined to be 4458:8±2:9t4:7-1:1 MeV and 17:3±6:5t8:0-5:7 MeV,respectively,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 time in a■b^(-)decay,and their masses and widths are measured with improved *** analysis is performed using pp collision data corresponding to a total integrated luminosity of 9 fb^(-1),collected with the LHCb experiment at centre-of-mass energies of 7,8 and 13 TeV.

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

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Avian Influenza and Newcastle Disease: A Field and Laboratory Manual 1

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2009年

作者： Illaria capua

来源：畅想之星图书光盘版（南... 评论

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Efficacy of four commercial disinfectants against H5N1 highly pathogenicity avian influenza virus

Efficacy of four commercial disinfectants against H5N1 highl...

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The 15th World Veterinary Poultry Congress

作者： C.Terregino P.de Benedictis E.Bertoli M.s.Beato I.capua OIE FAO and National Reference Laboratory for Avian Influenza and Newcastle DiseaseIstituto Zooprofilattico Sperimentale delle VenezieViale dell’Università 1035020LegnaroPadovaItaly OIE FAO and National Reference Laboratory for Avian Influenza and Newcastle DiseaseIstituto Zooprofilattico Sperimentale delle VenezieViale dell’Università 1035020LegnaroPadovaItaly OIE FAO and National Reference Laboratory for Avian Influenza and Newcastle DiseaseIstituto Zooprofilattico Sperimentale delle VenezieViale dell’Università 1035020LegnaroPadovaItaly OIE FAO and National Reference Laboratory for Avian Influenza and Newcastle DiseaseIstituto Zooprofilattico Sperimentale delle VenezieViale dell’Università 1035020LegnaroPadovaItaly OIE FAO and National Reference Laboratory for Avian Influenza and Newcastle DiseaseIstituto Zooprofilattico Sperimentale delle VenezieViale dell’Università 1035020LegnaroPadovaItaly

＜正＞Introduction Avian Influenza（AI）represents one of the greatest concerns for public health that has emerged from the animal reservoir in recent *** ongoing H5N1 epidemics have led to devastating consequences fo...

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禽流感病毒的理化消毒

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中国家禽 2008年第24期30卷 58-60页

作者： P．de Benedictis M．s．Beato I．capua 乔俊文(译) 苏晓鸥(校) 赵德明(校) OIE、FAO禽流感和新城疫意大利国家参考实验室中国农业大学动物医学院国家动物海绵状脑病实验室北京110193

禽流感是影响世界养禽业的重要疫病之一，此外还对人类公共卫生造成重要威胁：禽流感的一种可能传播途径是通过人类相关的活动，如人员的流动，运载工具如车辆及其它污染物和未进行彻底消毒的感染动物等。因此，假如人员、衣服、鞋、车... 详细信息

禽流感是影响世界养禽业的重要疫病之一，此外还对人类公共卫生造成重要威胁：禽流感的一种可能传播途径是通过人类相关的活动，如人员的流动，运载工具如车辆及其它污染物和未进行彻底消毒的感染动物等。因此，假如人员、衣服、鞋、车辆，农具及其它材料不能够彻底消毒，则禽流感的感染就会持续存在，同时对养禽业及公共卫生的威胁就不会根除。为此，清除并消毒被认为是控制禽流感过程中必不可少的步骤：本文重点阐述当前禽流感病毒的物理、化学消毒剂的研究现状及每类消毒剂的适用范围和注意事项。

关键词：禽流感病毒化学消毒剂公共卫生感染动物传播途径运载工具养禽业污染物

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