Observation of X (3872) production in pp collisions at √s =7 TeV

The LHCb collaboration

doi:10.1140/epjc/s10052-012-1972-7

Observation of X (3872) production in pp collisions at √s =7 TeV

The LHCb collaboration

European Organization for Nuclear Research
Science Park 105
University of Barcelona
Universitat Ramon LLull - CSIC
University Santiago de Compostela
University of Bristol
Aix Marseille Université
University of Liverpool
Clermont-Auvergne University
University of Glasgow
Petersburg Nuclear Physics Institute (PNPI)
Sezione di Roma
Instituto de Biofisica da UFRJ
ENAC-IIC-GEL
University of Zurich
University of Manchester
Max-Planck-Institut für Kernphysik
LNF-INFN
Université Paris-Sud
Kurchatov Institute
Syracuse University
Università degli Studi della Basilicata
University of Heidelberg
University of Warwick
Institute for Theoretical and Experimental Physics
Sezione INFN di Ferrara
Université Paris-Saclay
University of Cambridge
Centro Brasileiro de Pesquisas Fisicas
Sorbonne Université
University of Edinburgh
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
University College Dublin
University of Modena and Reggio Emilia
Imperial College London
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Novosibirsk State University
Sezione INFN di Cagliari
University of Dortmund
Vrije Universiteit Amsterdam
Horia Hulubei National Institute of Physics and Nuclear Engineering
INFN Sezione di Milano-Bicocca
University of Milano-Bicocca
INFN Sezione di Bologna
University of Rome “Tor Vergata”
Sezione di Genova
University of Genoa
University of Oxford
Université Savoie Mont Blanc
Kharkov Institute of Physics and Technology
Institute for Nuclear Physics
CCLRC Rutherford Appleton Laboratory
University of Birmingham
University of Ferrara
Institute for Nuclear Research of the Russian Academy of Sciences
University of Florence
University of Bologna
Tsinghua University
Pontifícia Universidade Católica do Rio de Janeiro
Universität Rostock
Institute of Nuclear Research, National Academy of Sciences in Ukraine
Moscow State University
Universitá di Cagliari
INFN Sezione di Bari
Agh University of Science and Technology Faculty of Computer Science
Hanoi University of Science
Università degli studi di Bari Aldo Moro
University of Rome
Soltan Institute for Nuclear Studies
University of Urbino Carlo Bo
P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

Using 34.7 pb^⁻1of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at √s = 7 TeV is observed for the first time. Candidates are selected in the X(3872)→J/ψπ⁺π⁻decay mode, and used to measure σ(pp→X(3872)+anything)B(X(3872)→J/ψπ⁺π⁻) = 5.4 ± 1.3 (stat) ± 0.8 (syst) nb, where σ(pp →X(3872) + anything) is the inclusive production cross section of X(3872) mesons with rapidity in the range 2.5–4.5 and transverse momentum in the range 5–20 GeV/c. In addition the masses of both the X(3872) and ψ(2S) mesons, reconstructed in the J/ψπ⁺π⁻final state, are measured to be m_X(387²) = 3871.95 ± 0.48 (stat) ± 0.12 (syst) MeV/c²and m_ψ(²S) = 3686.12± 0.06 (stat) ± 0.10 (syst) MeV/c².

langue originale	Anglais
Numéro d'article	1972
journal	European Physical Journal C
Volume	72
Numéro de publication	5
Les DOIs	https://doi.org/10.1140/epjc/s10052-012-1972-7
état	Publié - 1 janv. 2012
Modification externe	Oui

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10.1140/epjc/s10052-012-1972-7

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@article{c6e0483916bd499fa2770a555c4091ba,

title = "Observation of X (3872) production in pp collisions at √s =7 TeV",

abstract = "Using 34.7 pb −1of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at √s = 7 TeV is observed for the first time. Candidates are selected in the X(3872)→J/ψπ+π−decay mode, and used to measure σ(pp→X(3872)+anything)B(X(3872)→J/ψπ+π−) = 5.4 ± 1.3 (stat) ± 0.8 (syst) nb, where σ(pp →X(3872) + anything) is the inclusive production cross section of X(3872) mesons with rapidity in the range 2.5–4.5 and transverse momentum in the range 5–20 GeV/c. In addition the masses of both the X(3872) and ψ(2S) mesons, reconstructed in the J/ψπ+π−final state, are measured to be mX(3872) = 3871.95 ± 0.48 (stat) ± 0.12 (syst) MeV/c2and mψ(2S) = 3686.12± 0.06 (stat) ± 0.10 (syst) MeV/c2.",

author = "\{The LHCb collaboration\} and R. Aaij and Beteta, \{C. Abellan\} and B. Adeva and M. Adinolfi and C. Adrover and A. Affolder and Z. Ajaltouni and J. Albrecht and F. Alessio and M. Alexander and G. Alkhazov and Cartelle, \{P. Alvarez\} and Alves, \{A. A.\} and S. Amato and Y. Amhis and J. Anderson and Appleby, \{R. B.\} and Gutierrez, \{O. Aquines\} and F. Archilli and L. Arrabito and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and S. Bachmann and Back, \{J. J.\} and Bailey, \{D. S.\} and V. Balagura and W. Baldini and Barlow, \{R. J.\} and C. Barschel and S. Barsuk and W. Barter and A. Bates and C. Bauer and Th Bauer and A. Bay and I. Bediaga and S. Belogurov and K. Belous and I. Belyaev and E. Ben-Haim and M. Benayoun and G. Bencivenni and S. Benson and J. Benton and R. Bernet and Bettler, \{M. O.\} and \{Van Beuzekom\}, M. and E. Maurice",

year = "2012",

month = jan,

day = "1",

doi = "10.1140/epjc/s10052-012-1972-7",

language = "English",

volume = "72",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

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T1 - Observation of X (3872) production in pp collisions at √s =7 TeV

AU - The LHCb collaboration

AU - Aaij, R.

AU - Beteta, C. Abellan

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adrover, C.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alkhazov, G.

AU - Cartelle, P. Alvarez

AU - Alves, A. A.

AU - Amato, S.

AU - Amhis, Y.

AU - Anderson, J.

AU - Appleby, R. B.

AU - Gutierrez, O. Aquines

AU - Archilli, F.

AU - Arrabito, L.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Bachmann, S.

AU - Back, J. J.

AU - Bailey, D. S.

AU - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bates, A.

AU - Bauer, C.

AU - Bauer, Th

AU - Bay, A.

AU - Bediaga, I.

AU - Belogurov, S.

AU - Belous, K.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - Benayoun, M.

AU - Bencivenni, G.

AU - Benson, S.

AU - Benton, J.

AU - Bernet, R.

AU - Bettler, M. O.

AU - Van Beuzekom, M.

AU - Maurice, E.

PY - 2012/1/1

Y1 - 2012/1/1

N2 - Using 34.7 pb −1of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at √s = 7 TeV is observed for the first time. Candidates are selected in the X(3872)→J/ψπ+π−decay mode, and used to measure σ(pp→X(3872)+anything)B(X(3872)→J/ψπ+π−) = 5.4 ± 1.3 (stat) ± 0.8 (syst) nb, where σ(pp →X(3872) + anything) is the inclusive production cross section of X(3872) mesons with rapidity in the range 2.5–4.5 and transverse momentum in the range 5–20 GeV/c. In addition the masses of both the X(3872) and ψ(2S) mesons, reconstructed in the J/ψπ+π−final state, are measured to be mX(3872) = 3871.95 ± 0.48 (stat) ± 0.12 (syst) MeV/c2and mψ(2S) = 3686.12± 0.06 (stat) ± 0.10 (syst) MeV/c2.

AB - Using 34.7 pb −1of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at √s = 7 TeV is observed for the first time. Candidates are selected in the X(3872)→J/ψπ+π−decay mode, and used to measure σ(pp→X(3872)+anything)B(X(3872)→J/ψπ+π−) = 5.4 ± 1.3 (stat) ± 0.8 (syst) nb, where σ(pp →X(3872) + anything) is the inclusive production cross section of X(3872) mesons with rapidity in the range 2.5–4.5 and transverse momentum in the range 5–20 GeV/c. In addition the masses of both the X(3872) and ψ(2S) mesons, reconstructed in the J/ψπ+π−final state, are measured to be mX(3872) = 3871.95 ± 0.48 (stat) ± 0.12 (syst) MeV/c2and mψ(2S) = 3686.12± 0.06 (stat) ± 0.10 (syst) MeV/c2.

U2 - 10.1140/epjc/s10052-012-1972-7

DO - 10.1140/epjc/s10052-012-1972-7

M3 - Article

AN - SCOPUS:84937645360

SN - 1434-6044

VL - 72

JO - European Physical Journal C

JF - European Physical Journal C

IS - 5

M1 - 1972

ER -

Observation of X (3872) production in pp collisions at √s =7 TeV

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