Inclusive, prompt and non-prompt J/ψ production at midrapidity in p-Pb collisions at √<i>s</i><sub>NN</sub>=5.02 TeV


Acharya S., Adamova D., Adler A., Adolfsson J., Rinella G. A., Agnello M., ...Daha Fazla

JOURNAL OF HIGH ENERGY PHYSICS, cilt.2022, sa.6, 2022 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 2022 Sayı: 6
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/jhep06(2022)011
  • Dergi Adı: JOURNAL OF HIGH ENERGY PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, INSPEC, zbMATH, Directory of Open Access Journals
  • İstanbul Kültür Üniversitesi Adresli: Hayır

Özet

A measurement of inclusive, prompt, and non-prompt J/psi production in p-Pb collisions at a nucleon-nucleon centre-of-mass energy root s(NN) = 5.02 TeV is presented. The inclusive J/psi mesons are reconstructed in the dielectron decay channel at midrapidity down to a transverse momentum p(T) = 0. The inclusive J/psi nuclear modification factor R-pPb is calculated by comparing the new results in p-Pb collisions to a recently measured proton-proton reference at the same centre-of-mass energy. Non-prompt J/psi mesons, which originate from the decay of beauty hadrons, are separated from promptly produced J/psi on a statistical basis for p(T) larger than 1.0 GeV/c. These results are based on the data sample collected by the ALICE detector during the 2016 LHC p-Pb run, corresponding to an integrated luminosity L-int = 292 +/- 11 mu b(-1), which is six times larger than the previous publications. The total uncertainty on the P-T-integrated inclusive J/psi and non-prompt J/psi cross section are reduced by a factor 1.7 and 2.2, respectively. The measured cross sections and R-pPb are compared with theoretical models that include various combinations of cold nuclear matter effects. From the non-prompt J/psi production cross section, the b (b) over bar production cross section at midrapidity, d sigma(b (b) over bar)/dy, and the total cross section extrapolated over full phase space sigma(b (b) over bar) are derived.