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Title: Study of J/$$\psi$$ meson production from jet fragmentation in pp collisions at $$\sqrt{s} =$$ 8 TeV

Abstract

A study of the production of prompt J/$$\psi$$ mesons as fragmentation products of jets in proton-proton collisions at $$\sqrt{s} =$$ 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 a jet fragment. The analysis shows that most prompt J/$$\psi$$ mesons with energy above 15 GeV and rapidity $|y|<$ 1 are fragments of jets with pseudorapidity $$|\eta_{\text{jet}}| <$$ 1. The differential distributions of the jet fragmentation probability 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 unpolarized. This technique demonstrates a new way to test predictions for prompt J/$$\psi$$ production using nonrelativistic quantum chromodynamics.

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
CMS
OSTI Identifier:
1571803
Report Number(s):
FERMILAB-PUB-19-533-CMS; arXiv:1910.01686; CMS-BPH-15-003; CERN-EP-2019-186
oai:inspirehep.net:1757506
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
TBD
Additional Journal Information:
Journal Name: TBD
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Sirunyan, Albert M, and et al. Study of J/$\psi$ meson production from jet fragmentation in pp collisions at $\sqrt{s} =$ 8 TeV. United States: N. p., 2019. Web.
Sirunyan, Albert M, & et al. Study of J/$\psi$ meson production from jet fragmentation in pp collisions at $\sqrt{s} =$ 8 TeV. United States.
Sirunyan, Albert M, and et al. Thu . "Study of J/$\psi$ meson production from jet fragmentation in pp collisions at $\sqrt{s} =$ 8 TeV". United States. https://www.osti.gov/servlets/purl/1571803.
@article{osti_1571803,
title = {Study of J/$\psi$ meson production from jet fragmentation in pp collisions at $\sqrt{s} =$ 8 TeV},
author = {Sirunyan, Albert M and et al.},
abstractNote = {A study of the production of prompt J/$\psi$ mesons as fragmentation products of jets in proton-proton collisions at $\sqrt{s} =$ 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 a jet fragment. The analysis shows that most prompt J/$\psi$ mesons with energy above 15 GeV and rapidity $|y|<$ 1 are fragments of jets with pseudorapidity $|\eta_{\text{jet}}| <$ 1. The differential distributions of the jet fragmentation probability 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 unpolarized. This technique demonstrates a new way to test predictions for prompt J/$\psi$ production using nonrelativistic quantum chromodynamics.},
doi = {},
journal = {TBD},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {10}
}