Production of η and η' mesons in pp and pPb collisions

被引:2
作者
Aaij, R. [36 ]
Abdelmotteleb, A. S. W. [55 ]
Beteta, C. Abellan [49 ]
Abudinen, F. [55 ]
Ackernley, T. [59 ]
Adeva, B. [45 ]
Adinolfi, M. [53 ]
Adlarson, P. [79 ]
Agapopoulou, C. [47 ]
Aidala, C. A. [80 ]
Ajaltouni, Z. [11 ]
Akar, S. [64 ]
Akiba, K. [36 ]
Albicocco, P. [25 ]
Albrecht, J. [17 ]
Alessio, F. [47 ]
Alexander, M. [58 ]
Albero, A. Alfonso [44 ]
Aliouche, Z. [61 ]
Cartelle, P. Alvarez [54 ]
Amalric, R. [15 ]
Amato, S. [3 ]
Amey, J. L. [53 ]
Amhis, Y. [13 ,47 ]
An, L. [6 ]
Anderlini, L. [24 ]
Andersson, M. [49 ]
Andreianov, A. [42 ]
Andreola, P. [49 ]
Andreotti, M. [23 ]
Andreou, D. [67 ]
Anelli, A. [28 ,95 ]
Ao, D. [7 ]
Archilli, F. [35 ,101 ]
Argenton, M. [23 ]
Cuendis, S. Arguedas [9 ]
Artamonov, A. [42 ]
Artuso, M. [67 ]
Aslanides, E. [12 ]
Atzeni, M. [63 ]
Audurier, B. [14 ]
Bacher, D. [62 ]
Perea, I. Bachiller [10 ]
Bachmann, S. [19 ]
Bachmayer, M. [48 ]
Back, J. J. [55 ]
Bailly-reyre, A. [15 ]
Rodriguez, P. Baladron [45 ]
Balagura, V. [14 ]
Baldini, W. [23 ]
机构
[1] Monash Univ, Sch Phys & Astron, Melbourne, Vic, Australia
[2] Ctr Brasileiro Pesquisas Fisicas CBPF, Rio De Janeiro, Brazil
[3] Univ Fed Rio de Janeiro UFRJ, Rio De Janeiro, Brazil
[4] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China
[5] Inst High Energy Phys IHEP, Beijing, Peoples R China
[6] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China
[7] Univ Chinese Acad Sci, Beijing, Peoples R China
[8] Cent China Normal Univ, Inst Particle Phys, Wuhan, Hubei, Peoples R China
[9] Consejo Nacl Rectores CONARE, San Jose, Costa Rica
[10] Univ Savoie Mt Blanc, CNRS, IN2P3, LAPP, Annecy, France
[11] Univ Clermont Auvergne, LPC, CNRS, IN2P3, Clermont Ferrand, France
[12] Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France
[13] Univ Paris Saclay, IJCLab, CNRS, IN2P3, Orsay, France
[14] Inst Polytech Paris, Ecole Polytech, Lab Leprince Ringuet, CNRS,IN2P3, Palaiseau, France
[15] Sorbonne Univ, Paris Diderot Sorbonne Paris Cite, LPNHE, CNRS,IN2P3, Paris, France
[16] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany
[17] Tech Univ Dortmund, Fak Phys, Dortmund, Germany
[18] Max Planck Inst Kernphys MPIK, Heidelberg, Germany
[19] Heidelberg Univ, Phys Inst, Heidelberg, Germany
[20] Univ Coll Dublin, Sch Phys, Dublin, Ireland
[21] INFN, Sez Bari, Bari, Italy
[22] INFN, Sez Bologna, Bologna, Italy
[23] INFN, Sez Ferrara, Ferrara, Italy
[24] INFN, Sez Firenze, Florence, Italy
[25] INFN, Lab Nazl Frascati, Frascati, Italy
[26] INFN, Sez Genova, Genoa, Italy
[27] INFN, Sez Milano, Milan, Italy
[28] INFN, Sez Milano Bicocca, Milan, Italy
[29] INFN, Sez Cagliari, Monserrato, Italy
[30] Univ Padua, Padua, Italy
[31] INFN, Padua, Italy
[32] INFN, Sez Perugia, Perugia, Italy
[33] INFN, Sez Pisa, Pisa, Italy
[34] INFN, Sez Roma La Sapienza, Rome, Italy
[35] INFN, Sez Roma Tor Vergata, Rome, Italy
[36] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands
[37] Vrije Univ Amsterdam, Amsterdam, Netherlands
[38] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland
[39] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland
[40] Natl Ctr Nucl Res NCBJ, Warsaw, Poland
[41] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania
[42] CERN, Geneva, Switzerland
[43] Univ Ramon Llull, DS4DS, Barcelona, Spain
[44] Univ Barcelona, ICCUB, Barcelona, Spain
[45] Univ Santiago de Compostela, Inst Galego Fis Altas Enerxias IGFAE, Santiago De Compostela, Spain
[46] Ctr Mixto Univ Valencia, CSIC, Inst Fis Corpuscular, Valencia, Spain
[47] European Org Nucl Res CERN, Geneva, Switzerland
[48] Ecole Polytech Fed Lausanne EPFL, Inst Phys, Lausanne, Switzerland
[49] Univ Zurich, Phys Inst, Zurich, Switzerland
[50] NSC Kharkiv Inst Phys & Technol NSC KIPT, Kharkiv, Ukraine
基金
英国科学技术设施理事会;
关键词
SIDE ANGULAR-CORRELATIONS; PROTON-PROTON COLLISIONS; QUARK-GLUON PLASMA; LONG-RANGE; TRANSVERSE-MOMENTUM; PB COLLISIONS; NEUTRAL PION; PERSPECTIVE; SPECTRA;
D O I
10.1103/PhysRevC.109.024907
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The production of eta and eta' mesons is studied in proton -proton and proton -lead collisions collected with the LHCb detector. Proton -proton collisions are studied at center -of -mass energies of 5.02 and 13 TeV and proton -lead collisions are studied at a center -of -mass energy per nucleon of 8.16 TeV. The studies are performed in center -of -mass (c.m.) rapidity regions 2.5 < y(c.m.) < 3.5 (forward rapidity) and -4.0 < y(c.m.) < -3.0 (backward rapidity) defined relative to the proton beam direction. The eta and eta' production cross sections are measured differentially as a function of transverse momentum for 1.5 < p(T) < 10 GeV and 3 < p(T) < 10 GeV, respectively. The differential cross sections are used to calculate nuclear modification factors. The nuclear modification factors for eta and eta' mesons agree at both forward and backward rapidity, showing no significant evidence of mass dependence. The differential cross sections of eta mesons are also used to calculate eta/pi 0 cross-section ratios, which show evidence of a deviation from the world average. These studies offer new constraints on mass -dependent nuclear effects in heavy -ion collisions, as well as eta and eta' meson fragmentation.
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页数:20
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