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

被引：0

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.

引用

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