1 Ocak 2020 Dergi makalesi Açık Erişim

Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Eroe, J.; Del Valle, A. Escalante; Flechl, M.; Fruehwirth, R.; Ghete, V. M.; Hrubec, J.; Jeitler, M.; Krammer, N.; Kraetschmer, I.; Liko, D.; Madlener, T.; Mikulec, I.; Mikulec, I.

Citation Style Language JSON

{
  "DOI": "10.1016/j.physletb.2020.135409", 
  "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. (C) 2020 Elsevier B.V.", 
  "author": [
    {
      "family": "Sirunyan", 
      "given": " A. M."
    }, 
    {
      "family": "Tumasyan", 
      "given": " A."
    }, 
    {
      "family": "Adam", 
      "given": " W."
    }, 
    {
      "family": "Ambrogi", 
      "given": " F."
    }, 
    {
      "family": "Asilar", 
      "given": " E."
    }, 
    {
      "family": "Bergauer", 
      "given": " T."
    }, 
    {
      "family": "Brandstetter", 
      "given": " J."
    }, 
    {
      "family": "Dragicevic", 
      "given": " M."
    }, 
    {
      "family": "Eroe", 
      "given": " J."
    }, 
    {
      "family": "Del Valle", 
      "given": " A. Escalante"
    }, 
    {
      "family": "Flechl", 
      "given": " M."
    }, 
    {
      "family": "Fruehwirth", 
      "given": " R."
    }, 
    {
      "family": "Ghete", 
      "given": " V. M."
    }, 
    {
      "family": "Hrubec", 
      "given": " J."
    }, 
    {
      "family": "Jeitler", 
      "given": " M."
    }, 
    {
      "family": "Krammer", 
      "given": " N."
    }, 
    {
      "family": "Kraetschmer", 
      "given": " I."
    }, 
    {
      "family": "Liko", 
      "given": " D."
    }, 
    {
      "family": "Madlener", 
      "given": " T."
    }, 
    {
      "family": "Mikulec", 
      "given": " I."
    }, 
    {
      "family": "Mikulec", 
      "given": " I."
    }
  ], 
  "container_title": "PHYSICS LETTERS B", 
  "id": "6727", 
  "issued": {
    "date-parts": [
      [
        2020, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Study of J/psi meson production inside jets in pp collisions at N root s=8 TeV The CM Collaboration", 
  "type": "article-journal", 
  "volume": "804"
}