Exclusive γγ → μ+μ− production in proton-proton 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} $\end{document} TeV

被引：0
作者：
S. Chatrchyan
V. Khachatryan
A. M. Sirunyan
A. Tumasyan
W. Adam
T. Bergauer
M. Dragicevic
J. Erö
C. Fabjan
M. Friedl
R. Frühwirth
V. M. Ghete
J. Hammer
S. Hänsel
M. Hoch
N. Hörmann
J. Hrubec
M. Jeitler
W. Kiesenhofer
M. Krammer
D. Liko
I. Mikulec
M. Pernicka
B. Rahbaran
H. Rohringer
R. Schöfbeck
J. Strauss
A. Taurok
F. Teischinger
C. Trauner
P. Wagner
W. Waltenberger
G. Walzel
E. Widl
C.-E. Wulz
V. Mossolov
N. Shumeiko
J. Suarez Gonzalez
S. Bansal
L. Benucci
E. A. De Wolf
X. Janssen
S. Luyckx
T. Maes
L. Mucibello
S. Ochesanu
B. Roland
R. Rougny
M. Selvaggi
H. Van Haevermaet
机构：
[1] Yerevan Physics Institute,State Key Lab. of Nucl. Phys. and Tech.
[2] Institut für Hochenergiephysik der OeAW,Department of Physics
[3] National Centre for Particle and High Energy Physics,Plasma Physics Research Center
[4] Universiteit Antwerpen,undefined
[5] Vrije Universiteit Brussel,undefined
[6] Université Libre de Bruxelles,undefined
[7] Ghent University,undefined
[8] Université Catholique de Louvain,undefined
[9] Université de Mons,undefined
[10] Centro Brasileiro de Pesquisas Fisicas,undefined
[11] Universidade do Estado do Rio de Janeiro,undefined
[12] Instituto de Fisica Teorica,undefined
[13] Universidade Estadual Paulista,undefined
[14] Institute for Nuclear Research and Nuclear Energy,undefined
[15] University of Sofia,undefined
[16] Institute of High Energy Physics,undefined
[17] Peking University,undefined
[18] Universidad de Los Andes,undefined
[19] Technical University of Split,undefined
[20] University of Split,undefined
[21] Institute Rudjer Boskovic,undefined
[22] University of Cyprus,undefined
[23] Charles University,undefined
[24] Academy of Scientific Research and Technology of the Arab Republic of Egypt,undefined
[25] Egyptian Network of High Energy Physics,undefined
[26] National Institute of Chemical Physics and Biophysics,undefined
[27] University of Helsinki,undefined
[28] Helsinki Institute of Physics,undefined
[29] Lappeenranta University of Technology,undefined
[30] Laboratoire d’Annecy-le-Vieux de Physique des Particules,undefined
[31] IN2P3-CNRS,undefined
[32] DSM/IRFU,undefined
[33] CEA/Saclay,undefined
[34] Laboratoire Leprince-Ringuet,undefined
[35] Ecole Polytechnique,undefined
[36] IN2P3-CNRS,undefined
[37] Institut Pluridisciplinaire Hubert Curien,undefined
[38] Université de Strasbourg,undefined
[39] Université de Haute Alsace Mulhouse,undefined
[40] CNRS/IN2P3,undefined
[41] Centre de Calcul de l’Institut National de Physique Nucleaire et de Physique des Particules (IN2P3),undefined
[42] Université de Lyon,undefined
[43] Université Claude Bernard Lyon 1,undefined
[44] CNRS-IN2P3,undefined
[45] Institut de Physique Nucléaire de Lyon,undefined
[46] Institute of High Energy Physics and Informatization,undefined
[47] Tbilisi State University,undefined
[48] RWTH Aachen University,undefined
[49] I. Physikalisches Institut,undefined
[50] RWTH Aachen University,undefined
来源：
Journal of High Energy Physics | / 2012卷 / 1期
关键词：
Hadron-Hadron Scattering;
D O I：
10.1007/JHEP01(2012)052
中图分类号：
学科分类号：
摘要：
A measurement of the exclusive two-photon production of muon pairs in proton-proton 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} $\end{document} TeV, pp → pμ+μ−p, is reported using data corresponding to an integrated luminosity of 40 pb−1. For muon pairs with invariant mass greater than 11.5 GeV, transverse momentum pT (μ) > 4 GeV and pseudorapidity |η(μ)| < 2.1, a fit to the dimuon pT(μ+μ−) distribution results in a measured cross section of σ(p → pμ+μ−p) = \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ {3}.{38}_{{ - 0.{55}}}^{{ + 0.58}} $\end{document} (stat.) ± 0.16 (syst.) ± 0.14 (lumi.) pb, consistent with the theoretical prediction evaluated with the event generator Lpair. The ratio to the predicted cross section is \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ 0.{83}_{{ - 0.{13}}}^{{ + 0.58}} $\end{document} (stat.) ± 0.04 (syst.) ± 0.03 (lumi.). The characteristic distributions of the muon pairs produced via γγ fusion, such as the muon acoplanarity, the muon pair invariant mass and transverse momentum agree with those from the theory.
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