Measurement of the branching fraction and CP asymmetry in B+→J/ψρ+ decays

LHCb Collaboration

doi:10.1140/epjc/s10052-019-6698-3

Measurement of the branching fraction and CP asymmetry in ^B+→J/ψ^ρ+ decays

LHCb Collaboration

(Astro)-Particles Physics

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

The branching fraction and direct CP asymmetry of the decay B+→J/ψρ+ are measured using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to a total integrated luminosity of 3fb-1. The following results are obtained: B(B+→J/ψρ+)=(3.81-0.24+0.25±0.35)×10-5,ACP(B+→J/ψρ+)=-0.045-0.057+0.056±0.008,where the first uncertainties are statistical and the second systematic. Both measurements are the most precise to date.

Original language	English
Article number	537
Journal	European Physical Journal C
Volume	79
Issue number	6
DOIs	https://doi.org/10.1140/epjc/s10052-019-6698-3
Publication status	Published - 1 Jun 2019

Funding

Acknowledgements We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); MOST and NSFC (China); CNRS/IN2P3 (France); BMBF, DFG and MPG (Germany); INFN (Italy); NWO (Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MSHE (Russia); MinECo (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); NSF (USA). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (Netherlands), PIC (Spain), GridPP (United Kingdom), RRCKI and Yandex LLC (Russia), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), PL-GRID (Poland) and OSC (USA). We are indebted to the communities behind the multiple open-source software packages on which we depend. Individual groups or members have received support from AvH Foundation (Germany); EPLANET, Marie Skłodowska-Curie Actions and ERC (European Union); ANR, Labex P2IO and OCEVU, and Région Auvergne-Rhône-Alpes (France); Key Research Program of Frontier Sciences of CAS, CAS PIFI, and the Thousand Talents Program (China); RFBR, RSF and Yandex LLC (Russia); GVA, XuntaGal and GENCAT (Spain); the Royal Society and the Leverhulme Trust (United Kingdom); Laboratory Directed Research and Development program of LANL (USA). 14 School of Physics, University College Dublin, Dublin, Ireland 15 INFN Sezione di Bari, Bari, Italy 16 INFN Sezione di Bologna, Bologna, Italy 17 INFN Sezione di Ferrara, Ferrara, Italy 18 INFN Sezione di Firenze, Florence, Italy 19 INFN Laboratori Nazionali di Frascati, Frascati, Italy 20 INFN Sezione di Genova, Genova, Italy 21 INFN Sezione di Milano-Bicocca, Milan, Italy 22 INFN Sezione di Milano, Milan, Italy 23 INFN Sezione di Cagliari, Monserrato, Italy 24 INFN Sezione di Padova, Padua, Italy 25 INFN Sezione di Pisa, Pisa, Italy 26 INFN Sezione di Roma Tor Vergata, Rom, Italy 27 INFN Sezione di Roma La Sapienza, Rom, Italy 28 Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands 29 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, The Netherlands 30 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland 31 Faculty of Physics and Applied Computer Science, AGH-University of Science and Technology, Kraków, Poland 32 National Center for Nuclear Research (NCBJ), Warsaw, Poland 33 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania 34 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia 35 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia 36 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia 37 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAS), Moscow, Russia 38 Yandex School of Data Analysis, Moscow, Russia 39 National Research University Higher School of Economics, Moscow, Russia 40 Budker Institute of Nuclear Physics (SB RAS), Novosibirsk, Russia 41 Institute for High Energy Physics (IHEP), Protvino, Russia 42 ICCUB, Universitat de Barcelona, Barcelona, Spain 43 Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain 44 European Organization for Nuclear Research (CERN), Geneva, Switzerland 45 Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland 46 Physik-Institut, Universität Zürich, Zürich, Switzerland 47 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine 48 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine 49 University of Birmingham, Birmingham, UK 50 H.H. Wills Physics Laboratory, University of Bristol, Bristol, UK 51 Cavendish Laboratory, University of Cambridge, Cambridge, UK 52 Department of Physics, University of Warwick, Coventry, UK 53 STFC Rutherford Appleton Laboratory, Didcot, UK 54 School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK 55 School of Physics and Astronomy, University of Glasgow, Glasgow, UK 56 Oliver Lodge Laboratory, University of Liverpool, Liverpool, UK 57 Imperial College London, London, UK 58 School of Physics and Astronomy, University of Manchester, Manchester, UK 59 Department of Physics, University of Oxford, Oxford, UK 60 Massachusetts Institute of Technology, Cambridge, MA, USA 61 University of Cincinnati, Cincinnati, OH, USA 62 University of Maryland, College Park, MD, USA 63 Syracuse University, Syracuse, NY, USA 64 Laboratory of Mathematical and Subatomic Physics, Constantine, Algeria, associated to2 65 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil, associated to2 66 University of Chinese Academy of Sciences, Beijing, China, associated to3 67 South China Normal University, Guangzhou, China, associated to3 68 School of Physics and Technology, Wuhan University, Wuhan, China, associated to3 69 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China, associated to3 70 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia, associated to9 71 Institut für Physik, Universität Rostock, Rostock, Germany, associated to13 72 Van Swinderen Institute, University of Groningen, Groningen, The Netherlands, associated to28 73 National Research Centre Kurchatov Institute, Moscow, Russia, associated to35 74 National University of Science and Technology “MISIS”, Moscow, Russia, associated to35 75 National Research Tomsk Polytechnic University, Tomsk, Russia, associated to35 76 Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia-CSIC, Valencia, Spain, associated to42 77 University of Michigan, Ann Arbor, USA, associated to63 78 Los Alamos National Laboratory (LANL), Los Alamos, USA, associated to63

Funders	Funder number
Not added	1796908, ST/L003163/1, ST/N000242/1
AvH Foundation
CNRS/IN2P3
EPLANET
Key Research Program of Frontier Sciences of CAS
MSHE
OCEVU
XuntaGal
Yandex LLC
National Science Foundation
Laboratory Directed Research and Development
Los Alamos National Laboratory
School of Energy Resources, University of Wyoming
H2020 Marie Skłodowska-Curie Actions
CERN
College of Arts and Sciences, University of Nebraska-Lincoln
Science and Technology Facilities Council	ST/N000331/1, GRIDPP
Leverhulme Trust
Royal Society
European Research Council
Deutsche Forschungsgemeinschaft
Agence Nationale de la Recherche
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
National Natural Science Foundation of China
Russian Foundation for Basic Research
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Bundesministerium für Bildung und Forschung
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Generalitat Valenciana
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Ministry of Science and Technology
Instituto Nazionale di Fisica Nucleare
Narodowe Centrum Nauki
Ministerstwo Nauki i Szkolnictwa Wyższego
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
National Academy of Sciences of Ukraine
Financiadora de Estudos e Projetos
Russian Science Foundation
Région Auvergne-Rhône-Alpes
Recruitment Program of Global Experts

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1140/epjc/s10052-019-6698-3

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Cite this

@article{e76db11c23154985aae5dc43ad89b069,

title = "Measurement of the branching fraction and CP asymmetry in B+→J/ψρ+ decays",

abstract = "The branching fraction and direct CP asymmetry of the decay B+→J/ψρ+ are measured using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to a total integrated luminosity of 3fb-1. The following results are obtained: B(B+→J/ψρ+)=(3.81-0.24+0.25±0.35)×10-5,ACP(B+→J/ψρ+)=-0.045-0.057+0.056±0.008,where the first uncertainties are statistical and the second systematic. Both measurements are the most precise to date.",

author = "R. Aaij and Beteta, {C. Abell{\'a}n} and B. Adeva and M. Adinolfi and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and Albero, {A. Alfonso} and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and F. Archilli and P. d{\textquoteright}Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, {J. J.} and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and Barrand, {G. C.} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and V. Batozskaya and B. Batsukh and A. Battig and V. Battista and A. Bay and J. Beddow and F. Bedeschi and I. Bediaga and A. Beiter and Bel, {L. J.} and S. Belin and N. Beliy and V. Bellee and N. Belloli and K. Belous and I. Belyaev and E. Ben-Haim and G. Bencivenni and S. Benson and S. Beranek and A. Berezhnoy and R. Bernet and D. Berninghoff and E. Bertholet and A. Bertolin and C. Betancourt and F. Betti and Bettler, {M. O.} and {van Beuzekom}, M. and Ia Bezshyiko and S. Bhasin and J. Bhom and S. Bifani and P. Billoir and A. Birnkraut and A. Bizzeti and M. Bj{\o}rn and Blago, {M. P.} and T. Blake and F. Blanc and S. Blusk and D. Bobulska and V. Bocci and Garcia, {O. Boente} and T. Boettcher and A. Bondar and N. Bondar and S. Borghi and M. Borisyak and M. Borsato and F. Bossu and M. Boubdir and Bowcock, {T. J.V.} and C. Bozzi and S. Braun and M. Brodski and J. Brodzicka and Gonzalo, {A. Brossa} and D. Brundu and E. Buchanan and A. Buonaura and C. Burr and A. Bursche and J. Buytaert and W. Byczynski and S. Cadeddu and H. Cai and R. Calabrese and R. Calladine and M. Calvi and {Calvo Gomez}, M. and A. Camboni and P. Campana and {Campora Perez}, {D. H.} and L. Capriotti and A. Carbone and G. Carboni and R. Cardinale and A. Cardini and P. Carniti and L. Carson and {Carvalho Akiba}, K. and G. Casse and L. Cassina and M. Cattaneo and G. Cavallero and R. Cenci and D. Chamont and Chapman, {M. G.} and M. Charles and Ph Charpentier and G. Chatzikonstantinidis and M. Chefdeville and V. Chekalina and C. Chen and S. Chen and Chitic, {S. G.} and V. Chobanova and M. Chrzaszcz and A. Chubykin and P. Ciambrone and {Cid Vidal}, X. and G. Ciezarek and Clarke, {P. E.L.} and M. Clemencic and Cliff, {H. V.} and J. Closier and V. Coco and Coelho, {J. A.B.} and J. Cogan and E. Cogneras and L. Cojocariu and P. Collins and T. Colombo and A. Comerma-Montells and A. Contu and G. Coombs and S. Coquereau and G. Corti and M. Corvo and {Costa Sobral}, {C. M.} and B. Couturier and Cowan, {G. A.} and Craik, {D. C.} and A. Crocombe and {Cruz Torres}, M. and R. Currie and C. D{\textquoteright}Ambrosio and {Da Cunha Marinho}, F. and {Da Silva}, {C. L.} and E. Dall{\textquoteright}Occo and J. Dalseno and A. 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Yuan and O. Yushchenko and Zarebski, {K. A.} and M. Zavertyaev and D. Zhang and L. Zhang and Zhang, {W. C.} and Y. Zhang and A. Zhelezov and Y. Zheng and X. Zhu and V. Zhukov and Zonneveld, {J. B.} and S. Zucchelli and {LHCb Collaboration}",

year = "2019",

month = jun,

day = "1",

doi = "10.1140/epjc/s10052-019-6698-3",

language = "English",

volume = "79",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer New York",

number = "6",

}

TY - JOUR

T1 - Measurement of the branching fraction and CP asymmetry in B+→J/ψρ+ decays

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AU - Wislicki, W.

AU - Witek, M.

AU - Wormser, G.

AU - Wotton, S. A.

AU - Wyllie, K.

AU - Xiao, D.

AU - Xie, Y.

AU - Xu, A.

AU - Xu, M.

AU - Xu, Q.

AU - Xu, Z.

AU - Yang, Z.

AU - Yao, Y.

AU - Yeomans, L. E.

AU - Yin, H.

AU - Yu, J.

AU - Yuan, X.

AU - Yushchenko, O.

AU - Zarebski, K. A.

AU - Zavertyaev, M.

AU - Zhang, D.

AU - Zhang, L.

AU - Zhang, W. C.

AU - Zhang, Y.

AU - Zhelezov, A.

AU - Zheng, Y.

AU - Zhu, X.

AU - Zhukov, V.

AU - Zonneveld, J. B.

AU - Zucchelli, S.

AU - LHCb Collaboration

PY - 2019/6/1

Y1 - 2019/6/1

N2 - The branching fraction and direct CP asymmetry of the decay B+→J/ψρ+ are measured using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to a total integrated luminosity of 3fb-1. The following results are obtained: B(B+→J/ψρ+)=(3.81-0.24+0.25±0.35)×10-5,ACP(B+→J/ψρ+)=-0.045-0.057+0.056±0.008,where the first uncertainties are statistical and the second systematic. Both measurements are the most precise to date.

AB - The branching fraction and direct CP asymmetry of the decay B+→J/ψρ+ are measured using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to a total integrated luminosity of 3fb-1. The following results are obtained: B(B+→J/ψρ+)=(3.81-0.24+0.25±0.35)×10-5,ACP(B+→J/ψρ+)=-0.045-0.057+0.056±0.008,where the first uncertainties are statistical and the second systematic. Both measurements are the most precise to date.

UR - http://www.scopus.com/inward/record.url?scp=85067999706&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85067999706&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-019-6698-3

DO - 10.1140/epjc/s10052-019-6698-3

M3 - Article

AN - SCOPUS:85067999706

SN - 1434-6044

VL - 79

JO - European Physical Journal C

JF - European Physical Journal C

IS - 6

M1 - 537

ER -