Beyond nPDFs effects : Prompt J/psi and psi(2S) production in pPb and pp collisions


Oh G., Sirunyan A. M., Tumasyan A., Adam W., Ambrogi F., Asilar E., ...Daha Fazla

NUCLEAR PHYSICS A, cilt.982, ss.743-746, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 982
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1016/j.nuclphysa.2018.10.028
  • Dergi Adı: NUCLEAR PHYSICS A
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.743-746
  • Çukurova Üniversitesi Adresli: Evet

Özet

A multi-dimensional analysis of prompt charmonia in pp and pPb collisions at root s(NN) = 5.02 TeV with the CMS detector is presented. The pPb differential cross-sections of prompt J/psi are shown in a wide kinematic region, for transverse momentum p(T) spanning from 2 to 30 GeV/c and a rapidity interval between -2.4 to 1.93 in the center of mass of the collision. The final results on prompt psi/(2S) meson production cross section in pp and pPb collisions at 5.02 TeV are also reported as a function of p(T) and rapidity, for p(T) from 4 to 30 GeV/c. The nuclear modification factor is found to be smaller than that of prompt J/psi in all measured bins, especially at low p(T) and at backward rapidity. Such a different behaviour between the ground and excited states cannot be reproduced considering nPDF effects alone.