Measurement of ψ(2S) meson production in pp collisions at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\sqrt{s}=7\ \mbox{TeV}$\end{document}

被引:0
作者
R. Aaij
C. Abellan Beteta
B. Adeva
M. Adinolfi
C. Adrover
A. Affolder
Z. Ajaltouni
J. Albrecht
F. Alessio
M. Alexander
G. Alkhazov
P. Alvarez Cartelle
A. A. Alves
S. Amato
Y. Amhis
J. Anderson
R. B. Appleby
O. Aquines Gutierrez
F. Archilli
L. Arrabito
A. Artamonov
M. Artuso
E. Aslanides
G. Auriemma
S. Bachmann
J. J. Back
D. S. Bailey
V. Balagura
W. Baldini
R. J. Barlow
C. Barschel
S. Barsuk
W. Barter
A. Bates
C. Bauer
Th. Bauer
A. Bay
I. Bediaga
S. Belogurov
K. Belous
I. Belyaev
E. Ben-Haim
M. Benayoun
G. Bencivenni
S. Benson
J. Benton
R. Bernet
M.-O. Bettler
M. van Beuzekom
A. Bien
机构
[1] CERN,Center for High Energy Physics
[2] Centro Brasileiro de Pesquisas Físicas (CBPF),LAPP, Université de Savoie
[3] Universidade Federal do Rio de Janeiro (UFRJ),Clermont Université, Université Blaise Pascal
[4] Tsinghua University,CPPM, Aix
[5] CNRS/IN2P3,Marseille Université
[6] CNRS/IN2P3,LAL, Université Paris
[7] LPC,Sud
[8] CNRS/IN2P3,LPNHE, Université Pierre et Marie Curie, Université Paris Diderot
[9] CNRS/IN2P3,Fakultät Physik
[10] CNRS/IN2P3,Physikalisches Institut
[11] Technische Universität Dortmund,School of Physics
[12] Max-Planck-Institut für Kernphysik (MPIK),Institute of Nuclear Physics
[13] Ruprecht-Karls-Universität Heidelberg,Physik
[14] University College Dublin,Institut
[15] Sezione INFN di Bari,H.H. Wills Physics Laboratory
[16] Sezione INFN di Bologna,Cavendish Laboratory
[17] Sezione INFN di Cagliari,Department of Physics
[18] Sezione INFN di Ferrara,School of Physics and Astronomy
[19] Sezione INFN di Firenze,School of Physics and Astronomy
[20] Laboratori Nazionali dell’INFN di Frascati,Oliver Lodge Laboratory
[21] Sezione INFN di Genova,School of Physics and Astronomy
[22] Sezione INFN di Milano Bicocca,Department of Physics
[23] Sezione INFN di Roma Tor Vergata,CC
[24] Sezione INFN di Roma La Sapienza,IN2P3
[25] Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences,Physikalisches Institut
[26] AGH University of Science and Technology,undefined
[27] Soltan Institute for Nuclear Studies,undefined
[28] Horia Hulubei National Institute of Physics and Nuclear Engineering,undefined
[29] Petersburg Nuclear Physics Institute (PNPI),undefined
[30] Institute of Theoretical and Experimental Physics (ITEP),undefined
[31] Moscow State University (SINP MSU),undefined
[32] Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN),undefined
[33] Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University,undefined
[34] Institute for High Energy Physics (IHEP),undefined
[35] Universitat de Barcelona,undefined
[36] Universidad de Santiago de Compostela,undefined
[37] European Organization for Nuclear Research (CERN),undefined
[38] Ecole Polytechnique Fédérale de Lausanne (EPFL),undefined
[39] Universität Zürich,undefined
[40] Nikhef National Institute for Subatomic Physics,undefined
[41] Nikhef National Institute for Subatomic Physics and Vrije Universiteit,undefined
[42] NSC Kharkiv Institute of Physics and Technology (NSC KIPT),undefined
[43] Institute for Nuclear Research of the National Academy of Sciences (KINR),undefined
[44] University of Birmingham,undefined
[45] University of Bristol,undefined
[46] University of Cambridge,undefined
[47] University of Warwick,undefined
[48] STFC Rutherford Appleton Laboratory,undefined
[49] University of Edinburgh,undefined
[50] University of Glasgow,undefined
来源
The European Physical Journal C | 2012年 / 72卷 / 8期
关键词
Systematic Uncertainty; Decay Mode; Primary Vertex; Silicon Strip Detector; LHCb Detector;
D O I
10.1140/epjc/s10052-012-2100-4
中图分类号
学科分类号
摘要
The differential cross-section for the inclusive production of ψ(2S) mesons in pp collisions at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\sqrt{s}=7\ \mbox{TeV}$\end{document} has been measured with the LHCb detector. The data sample corresponds to an integrated luminosity of 36 pb−1. The ψ(2S) mesons are reconstructed in the decay channels ψ(2S)→μ+μ− and ψ(2S)→J/ψπ+π−, with the J/ψ meson decaying into two muons. Results are presented both for promptly produced ψ(2S) mesons and for those originating from b-hadron decays. In the kinematic range pT(ψ(2S))≤16 GeV/c and 2<y(ψ(2S))≤4.5 we measure [graphic not available: see fulltext] where the last uncertainty on the prompt cross-section is due to the unknown ψ(2S) polarization. Recent QCD calculations are found to be in good agreement with our measurements. Combining the present result with the LHCb J/ψ measurements we determine the inclusive branching fraction [graphic not available: see fulltext] where the last uncertainty is due to the \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\mathcal{B}(b \rightarrow J/\psi X)$\end{document}, \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\mathcal{B}(J/\psi\rightarrow\mu^{+} \mu^{-})$\end{document} and \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\mathcal{B}(\psi(2S) \rightarrow e^{+} e^{-})$\end{document} branching fraction uncertainties.
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