Measurement of exclusive ρ(770)0 photoproduction in ultraperipheral pPb collisions at √sNN=5.02 TeV

被引:0
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作者
Sirunyan, A. M. [2 ]
Tumasyan, A. [2 ]
Adam, W. [3 ]
Ambrogi, F. [3 ]
Asilar, E. [3 ]
Bergauer, T. [3 ]
Brandstetter, J. [3 ]
Dragicevic, M. [3 ]
Eroe, J. [3 ]
Del Valle, A. Escalante [3 ]
Flechl, M. [3 ]
Fruehwirth, R. [3 ,205 ]
Ghete, V. M. [3 ]
Hrubec, J. [3 ]
Jeitler, M. [3 ,205 ]
Krammer, N. [3 ]
Kraetschmer, I [3 ]
Liko, D. [3 ]
Madlener, T. [3 ]
Mikulec, I [3 ]
Rad, N. [3 ]
Rohringer, H. [3 ]
Schieck, J. [3 ,205 ]
Schoefbeck, R. [3 ]
Spanring, M. [3 ]
Spitzbart, D. [3 ]
Taurok, A. [3 ]
Waltenberger, W. [3 ]
Wittmann, J. [3 ]
Wulz, C-E [3 ,205 ]
Zarucki, M. [3 ]
Chekhovsky, V [4 ]
Mossolov, V [4 ]
Gonzalez, J. Suarez [4 ]
De Wolf, E. A. [5 ]
Di Croce, D. [5 ]
Janssen, X. [5 ]
Lauwers, J. [5 ]
Pieters, M. [5 ]
Van Haevermaet, H. [5 ]
Van Mechelen, P. [5 ]
Van Remortel, N. [5 ]
Abu Zeid, S. [6 ]
Blekman, F. [6 ]
D'Hondt, J. [6 ]
De Clercq, J. [6 ]
Deroover, K. [6 ]
Flouris, G. [6 ]
Lontkovskyi, D. [6 ]
Lowette, S. [6 ]
机构
[1] CERN, Geneva, Switzerland
[2] Yerevan Phys Inst, Yerevan, Armenia
[3] Inst Hochenergiephys, Vienna, Austria
[4] Inst Nucl Problems, Minsk, BELARUS
[5] Univ Antwerp, Antwerp, Belgium
[6] Vrije Univ Brussel, Brussels, Belgium
[7] Univ Libre Bruxelles, Brussels, Belgium
[8] Univ Ghent, Ghent, Belgium
[9] Catholic Univ Louvain, Louvain La Neuve, Belgium
[10] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
[11] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil
[12] Univ Estadual Paulista, Sao Paulo, Brazil
[13] Univ Fed ABC, Sao Paulo, Brazil
[14] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria
[15] Univ Sofia, Sofia, Bulgaria
[16] Beihang Univ, Beijing, Peoples R China
[17] Inst High Energy Phys, Beijing, Peoples R China
[18] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China
[19] Tsinghua Univ, Beijing, Peoples R China
[20] Univ Los Andes, Bogota, Colombia
[21] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia
[22] Univ Split, Fac Sci, Split, Croatia
[23] Inst Rudjer Boskovic, Zagreb, Croatia
[24] Univ Cyprus, Nicosia, Cyprus
[25] Charles Univ Prague, Prague, Czech Republic
[26] Escuela Politec Nacl, Quito, Ecuador
[27] Univ San Francisco Quito, Quito, Ecuador
[28] Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt
[29] NICPB, Tallinn, Estonia
[30] Univ Helsinki, Dept Phys, Helsinki, Finland
[31] Helsinki Inst Phys, Helsinki, Finland
[32] Lappeenranta Univ Technol, Lappeenranta, Finland
[33] Univ Paris Saclay, IRFU, CEA, Gif Sur Yvette, France
[34] Univ Paris Saclay, Ecole Polytech, Lab Leprince Ringuet, CNRS,IN2P3, Palaiseau, France
[35] Univ Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
[36] CNRS, Ctr Calcul, Inst Natl Phys Nucl & Phys Particules, IN2P3, Villeurbanne, France
[37] Univ Claude Bernard Lyon 1, Univ Lyon, CNRS, IN2P3,Inst Phys Nucl Lyon, Villeurbanne, France
[38] Georgian Tech Univ, Tbilisi, Georgia
[39] Tbilisi State Univ, Tbilisi, Georgia
[40] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany
[41] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany
[42] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany
[43] DESY, Hamburg, Germany
[44] Univ Hamburg, Hamburg, Germany
[45] Karlsruher Inst Technol, Karlsruhe, Germany
[46] NCSR Demokritos, INPP, Aghia Paraskevi, Greece
[47] Natl & Kapodistrian Univ Athens, Athens, Greece
[48] Natl Tech Univ Athens, Athens, Greece
[49] Univ Ioannina, Ioannina, Greece
[50] Eotvos Lorand Univ, MTA ELTE Lendulet CMS Particle & Nucl Phys Grp, Budapest, Hungary
来源
EUROPEAN PHYSICAL JOURNAL C | 2019年 / 79卷 / 08期
基金
欧洲研究理事会; 欧盟地平线“2020”; 巴西圣保罗研究基金会; 芬兰科学院;
关键词
J/PSI PHOTOPRODUCTION; GLUON SATURATION; MESON PRODUCTION; RHO; PROTON; ELECTROPRODUCTION; DEPENDENCE; PHOTON; MASS;
D O I
10.1140/epjc/s10052-019-7202-9
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Exclusive.(770) 0 photoproduction is measured for the first time in ultraperipheral pPb collisions at v s NN = 5.02 TeV with the CMS detector. The cross section s(.p..(770) 0 p) is 11.0 +/- 1.4 (stat) +/- 1.0 (syst) mu b at W. p = 92.6GeV for photon-proton centre-of-mass energies W. p between 29 and 213 GeV. The differential cross section ds/d| t| is measured in the interval 0.025 < | t| < 1GeV 2 as a function of W. p, where t is the squared four-momentum transfer at the proton vertex. The results are compared with previous measurements and theoretical predictions. The measured cross section s(.p..(770) 0 p) has a power-law dependence on the photon-proton centre-of-mass, consistent with electron-proton collision measurements performed at HERA. The W. p dependence of the exponential slope of the differential cross section ds/d| t| is also measured.
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页数:27
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