RT Journal Article
T1 Suppression of ψ(2S) production in p-Pb collisions at √sNN= 5.02 TeV
A1 ALICE Collaboration, 
A1 Armesto Pérez, Néstor
A1 González Ferreiro, Elena
A1 Pajares Vales, Carlos
A1 Salgado López, Carlos Alberto
K1 Charm physics
K1 Heavy Ions
AB The ALICE Collaboration has studied the inclusive production of the charmonium state ψ(2S) in proton-lead (p-Pb) collisions at the nucleon-nucleon centre of mass energy √sNN= 5.02 TeV at the CERN LHC. The measurement was performed at forward (2.03 < y cms < 3.53) and backward (−4.46 < y cms < −2.96) centre of mass rapidities, studying the decays into muon pairs. In this paper, we present the inclusive production cross sections σ ψ(2S), both integrated and as a function of the transverse momentum p T, for the two y cms domains. The results are compared to those obtained for the 1S vector state (J/ψ), by showing the ratios between the production cross sections, as well as the double ratios [σ ψ(2S) /σ J/ψ ]pPb /[σ ψ(2S) /σ J/ψ ]pp between p-Pb and proton-proton collisions. Finally, the nuclear modification factor for inclusive ψ(2S) is evaluated and compared to the measurement of the same quantity for J/ψ and to theoretical models including parton shadowing and coherent energy loss mechanisms. The results show a significantly larger suppression of the ψ(2S) compared to that measured for J/ψ and to models. These observations represent a clear indication for sizeable final state effects on ψ(2S) production.
PB Springer
YR 2014
FD 2014
LK http://hdl.handle.net/10347/21619
UL http://hdl.handle.net/10347/21619
LA eng
NO Abelev, B., Adam, J., Adamová, D. et al. Suppression of ψ(2S) production in p-Pb collisions at √sNN= 5.02 TeV. J. High Energ. Phys. 2014, 73 (2014). https://doi.org/10.1007/JHEP12(2014)073
NO The ALICE collaboration acknowledges the following funding agencies for theirsupport in building and running the ALICE detector: State Committee of Science,World Federation of Scientists (WFS) and Swiss Fonds Kidagan, Armenia, ConselhoNacional de Desenvolvimento Científico e Tecnológico (CNPq), Financiadora de Estudose Projetos (FINEP), Fundacão de Amparo à Pesquisa do Estado de S˜ao Paulo (FAPESP);National Natural Science Foundation of China (NSFC), the Chinese Ministry of Education(CMOE) and the Ministry of Science and Technology of China (MSTC); Ministry ofEducation and Youth of the Czech Republic; Danish Natural Science Research Council,the Carlsberg Foundation and the Danish National Research Foundation; The EuropeanResearch Council under the European Community’s Seventh Framework Programme;Helsinki Institute of Physics and the Academy of Finland; French CNRS-IN2P3, the‘Region Pays de Loire’, ‘Region Alsace’, ‘Region Auvergne’ and CEA, France; GermanBMBF and the Helmholtz Association; General Secretariat for Research and Technology,Ministry of Development, Greece; Hungarian OTKA and National Office for Researchand Technology (NKTH); Department of Atomic Energy and Department of Science andTechnology of the Government of India; Istituto Nazionale di Fisica Nucleare (INFN)and Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi”,Italy; MEXT Grant-in-Aid for Specially Promoted Research, Japan; Joint Institute forNuclear Research, Dubna; National Research Foundation of Korea (NRF); CONACYT,DGAPA, México, ALFA-EC and the EPLANET Program (European Particle PhysicsLatin American Network) Stichting voor Fundamenteel Onderzoek der Materie (FOM)and the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands;Research Council of Norway (NFR); Polish Ministry of Science and Higher Education; Na-tional Authority for Scientific Research - NASR (Autoritatea National a pentru CercetareStiintifica - ANCS); Ministry of Education and Science of Russian Federation, RussianAcademy of Sciences, Russian Federal Agency of Atomic Energy, Russian Federal Agencyfor Science and Innovations and The Russian Foundation for Basic Research; Ministry ofEducation of Slovakia; Department of Science and Technology, South Africa; CIEMAT,EELA, Ministerio de Econom´ıa y Competitividad (MINECO) of Spain, Xunta de Galicia(Consellería de Educación), CEADEN, Cubaenergía, Cuba, and IAEA (InternationalAtomic Energy Agency); Swedish Research Council (VR) and Knut & Alice WallenbergFoundation (KAW); Ukraine Ministry of Education and Science; United Kingdom Scienceand Technology Facilities Council (STFC); The United States Department of Energy, theUnited States National Science Foundation, the State of Texas, and the State of Ohio.
DS Minerva
RD 24 abr 2026