Measurement of ϒ 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}$\sqrt{\boldsymbol{s}}=\boldsymbol{7}~\mathrm{TeV}$\end{document}

被引：0
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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,Physikalisches Institut
[24] Sezione INFN di Roma La Sapienza,undefined
[25] Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences,undefined
[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 / 6期
关键词：
Large Hadron Collider; Transverse Momentum; Systematic Uncertainty; Invariant Mass Distribution; Muon System;
D O I：
10.1140/epjc/s10052-012-2025-y
中图分类号：
学科分类号：
摘要：
The production of ϒ(1S), ϒ(2S) and ϒ(3S) mesons in proton-proton collisions at the centre-of-mass energy of \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} is studied with the LHCb detector. The analysis is based on a data sample of 25 pb−1 collected at the Large Hadron Collider. The ϒ mesons are reconstructed in the decay mode ϒ→μ+μ− and the signal yields are extracted from a fit to the μ+μ− invariant mass distributions. The differential production cross-sections times dimuon branching fractions are measured as a function of the ϒ transverse momentum pT and rapidity y, over the range pT<15 GeV/c and 2.0<y<4.5. The cross-sections times branching fractions, integrated over these kinematic ranges, are measured to be [graphic not available: see fulltext] where the first uncertainty is statistical, the second systematic and the third is due to the unknown polarisation of the three ϒ states.
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