Study of J/psi meson production inside jets in pp collisions at 8 TeV
- Title
- Study of J/psi meson production inside jets in pp collisions at 8 TeV
- Author
- 김태정
- Keywords
- CMS; J/psi Mesons; Jets
- Issue Date
- 2020-05
- Publisher
- ELSEVIER
- Citation
- PHYSICS LETTERS B, v. 804, article no. 135409
- Abstract
- A study of the production of prompt J/psi mesons contained in jets in proton-proton collisions at root s = 8 TeV is presented. The analysis is based on data corresponding to an integrated luminosity of 19.1 fb(-1) collected with the CMS detector at the LHC. For events with at least one observed jet, the angular separation between the J/psi meson and the jet is used to test whether the J/psi meson is part of the jet. The analysis shows that most prompt J/psi mesons having energy above 15 GeV and rapidity vertical bar y vertical bar < 1 are contained in jets with pseudorapidity vertical bar eta(jet)vertical bar < 1. The differential distributions of the probability to have a J/psi meson contained in a jet as a function of jet energy for a fixed J/psi energy fraction are compared to a theoretical model using the fragmenting jet function approach. The data agree best with fragmenting jet function calculations that use a long-distance matrix element parameter set in which prompt J/psi mesons are predicted to be unpolarized. This technique demonstrates a new way to test predictions for prompt J/psi production using nonrelativistic quantum chromodynamics.
- URI
- https://www.sciencedirect.com/science/article/pii/S0370269320302136?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/166430
- ISSN
- 0370-2693; 1873-2445
- DOI
- 10.1016/j.physletb.2020.135409
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
- Files in This Item:
- Study of J psi meson production inside jets in pp collisions at N root s=8 TeV.pdfDownload
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