期刊
NUCLEAR PHYSICS A
卷 982, 期 -, 页码 186-188出版社
ELSEVIER
DOI: 10.1016/j.nuclphysa.2018.09.049
关键词
CMS; J/psi; Jets; pp collisions
资金
- STFC [ST/K003542/1, ST/M004775/1, ST/I003622/1, ST/N000242/1, ST/F007434/1, ST/J004871/1, ST/I505580/1, ST/L005603/1, ST/N001273/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/N001273/1, ST/F007434/1, ST/I505580/1, ST/L005603/1, ST/K003542/1 GRID PP, ST/J004871/1, ST/I003622/1, ST/K003542/1, ST/N000242/1, ST/M004775/1] Funding Source: researchfish
The fragmentation of jets containing a J/psi meson is studied in root 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/psi is measured for prompt J/psi and J/psi 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/psi 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/psi.
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