2018/05/31 by A. M. Sirunyan, CMS Collaboration, A. Tumasyan +98 · 1 citation
Engineering · Physics and Astronomy · #Engineering #High-Energy Particle Collisions Research #Mechanical engineering #Nuclear physics #Particle physics theoretical and experimental studies #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Scroll #hep-ex #nucl-ex
paper · pdf · doi:10.1016/j.physletb.2019.01.058
published as Phys. Lett. B 790 (2019) 509 · Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIN-16-015 (CMS Public Pages)
openalex created_date 2018/05/17 · openalex publication_date 2019/02/01 · arxiv created 2019/02/12 · arxiv updated 2019/02/14 · openalex updated_date 2026/08/06
Measurements of prompt ψ ( 2S ) meson production cross sections in proton–lead (pPb) and proton–proton (pp) collisions at a nucleon–nucleon center-of-mass energy of s NN = 5.02 TeV are reported. The results are based on pPb and pp data collected by the CMS experiment at the LHC, corresponding to integrated luminosities of 34.6 nb − 1 and 28.0 pb − 1 , respectively. The nuclear modification factor R pPb is measured for prompt ψ ( 2S ) in the transverse momentum range 4 < p T < 30 GeV / c and the center-of-mass rapidity range − 2.4 < y CM < 1.93 . The results on ψ ( 2S ) R pPb are compared to the corresponding modification factor for prompt J / ψ mesons. The results point to different nuclear effects at play in the production of the excited charmonium state compared to the ground state, in the region of backward rapidity and for p T < 10 GeV / c .