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Study of J/ψ meson production inside jets in pp collisions at s=8TeV

  • Author(s): Sirunyan, AM
  • Tumasyan, A
  • Adam, W
  • Ambrogi, F
  • Bergauer, T
  • Brandstetter, J
  • Dragicevic, M
  • Erö, J
  • Escalante Del Valle, A
  • Flechl, M
  • Frühwirth, R
  • Jeitler, M
  • Krammer, N
  • Krätschmer, I
  • Liko, D
  • Madlener, T
  • Mikulec, I
  • Rad, N
  • Schieck, J
  • Schöfbeck, R
  • Spanring, M
  • Spitzbart, D
  • Waltenberger, W
  • Wulz, CE
  • Zarucki, M
  • Drugakov, V
  • Mossolov, V
  • Suarez Gonzalez, J
  • Darwish, MR
  • De Wolf, EA
  • Di Croce, D
  • Janssen, X
  • Lelek, A
  • Pieters, M
  • Rejeb Sfar, H
  • Van Haevermaet, H
  • Van Mechelen, P
  • Van Putte, S
  • Van Remortel, N
  • Blekman, F
  • Bols, ES
  • Chhibra, SS
  • D'Hondt, J
  • De Clercq, J
  • Lontkovskyi, D
  • Lowette, S
  • Marchesini, I
  • Moortgat, S
  • Python, Q
  • Skovpen, K
  • Tavernier, S
  • Van Doninck, W
  • Van Mulders, P
  • Beghin, D
  • Bilin, B
  • Brun, H
  • Clerbaux, B
  • De Lentdecker, G
  • Delannoy, H
  • Dorney, B
  • Favart, L
  • Grebenyuk, A
  • Kalsi, AK
  • Popov, A
  • Postiau, N
  • Starling, E
  • Thomas, L
  • Vander Velde, C
  • Vanlaer, P
  • Vannerom, D
  • Cornelis, T
  • Dobur, D
  • Khvastunov, I
  • Niedziela, M
  • Roskas, C
  • Trocino, D
  • Tytgat, M
  • Verbeke, W
  • Vermassen, B
  • Vit, M
  • Zaganidis, N
  • Bondu, O
  • Bruno, G
  • Caputo, C
  • David, P
  • Delaere, C
  • Delcourt, M
  • Giammanco, A
  • Lemaitre, V
  • Magitteri, A
  • Prisciandaro, J
  • Saggio, A
  • Vidal Marono, M
  • Vischia, P
  • Zobec, J
  • Alves, FL
  • Alves, GA
  • Correia Silva, G
  • Hensel, C
  • Moraes, A
  • et al.

Published Web Location

https://arxiv.org/pdf/1910.01686.pdf
No data is associated with this publication.
Abstract

A study of the production of prompt J/ψ mesons contained in jets in proton-proton collisions at s=8TeV 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/ψ meson and the jet is used to test whether the J/ψ meson is part of the jet. The analysis shows that most prompt J/ψ mesons having energy above 15 GeV and rapidity |y|<1 are contained in jets with pseudorapidity |ηjet|<1. The differential distributions of the probability to have a J/ψ meson contained in a jet as a function of jet energy for a fixed J/ψ 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/ψ mesons are predicted to be unpolarized. This technique demonstrates a new way to test predictions for prompt J/ψ production using nonrelativistic quantum chromodynamics.

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