Fragmentation of J/psi in jets in pp collisions at √s=5.02 TeV Batoul Diab for the CMS collaboration

Autor: Diab, Batoul
Přispěvatelé: Antinori, Federico, Dainese, Andrea, Giubellino, Paolo, Greco, Vincenzo, Lombardo, Maria P., Scomparin, Enrico
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Nuclear Physics A, 982
ISSN: 0375-9474
1873-1554
DOI: 10.3929/ethz-b-000328370
Popis: The fragmentation of jets containing a J/ψ meson is studied in √s = 5.02 TeV pp data using an integrated luminosity of L = 27.39 pb(-1). The fraction of the jet transverse momentum p(Tjet) carried by the J/ψ is measured for prompt J/ψ and J/ψ coming from b hadron decays, named nonprompt. Whereas the fragmentation function of nonprompt J/psi is well-modeled by simulations using a Monte Carlo generator, the prompt J/psi are found to be accompanied by a larger level of jet activity. The fraction of J/ψ mesons that are produced inside a jet is also reported, and found to be larger in data than in simulation, for both prompt and nonprompt J/ψ.
Nuclear Physics A, 982
ISSN:0375-9474
ISSN:1873-1554
Databáze: OpenAIRE
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