Large-$P_T$ inclusive photoproduction of $J/\psi$ in electron-proton collisions at HERA and the EIC

Autor: Yelyzaveta Yedelkina, Jean-Philippe Lansberg, Carlo Flore, Hua-Sheng Shao
Přispěvatelé: Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Hautes Energies (LPTHE), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Photon
[formula omitted]
Nuclear Theory
Proton
transverse momentum: high
Electron
01 natural sciences
High Energy Physics - Experiment
High Energy Physics - Experiment (hep-ex)
High Energy Physics - Phenomenology (hep-ph)
EIC
J/psi(3100): photoproduction
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Charm (quantum number)
Nuclear Experiment (nucl-ex)
Nuclear Experiment
Nuclear theory
Physics
HERA
Quarkonium
lcsh:QC1-999
High Energy Physics - Phenomenology
DESY HERA Stor
electron p: colliding beams
Photoproduction
J/ψ
Nuclear and High Energy Physics
Particle physics
[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]
FOS: Physical sciences
nonperturbative
ep reactions
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Computer Science::Digital Libraries
Charm quark
Nuclear Theory (nucl-th)
0103 physical sciences
010306 general physics
quarkonium: photoproduction
010308 nuclear & particles physics
High Energy Physics::Phenomenology
sensitivity
quantum electrodynamics: correction
eRHIC
photon: off-shell
[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
High Energy Physics::Experiment
charm
lcsh:Physics
Zdroj: Physics Letters B
Physics Letters B, Elsevier, 2020, 811, pp.135926. ⟨10.1016/j.physletb.2020.135926⟩
Physics Letters
Physics Letters B, Vol 811, Iss, Pp 135926-(2020)
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2020.135926⟩
Popis: We study the inclusive J/psi production at large transverse momenta at lepton-hadron colliders in the limit when the exchange photon is quasi real, also referred to as photoproduction. Our computation includes the leading-P_T leading-v next-to-leading alpha_s corrections. In particular, we consider the contribution from J/psi plus another charm quark, by employing for the first time in quarkonium photoproduction the variable-flavour-number scheme. We also include a QED-induced contribution via an off-shell photon which remained ignored in the literature and which we show to be the leading contribution at high P_T within the reach of the EIC. In turn, we use our computation of J/psi+charm to demonstrate its observability at the future EIC and the EIC sensitivity to probe the non-perturbative charm content of the proton at high x.
Comment: LaTeX, 11 pages; 15 figures
Databáze: OpenAIRE
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