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.

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        "affiliation": "Yerevan Phys Inst, Yerevan, Armenia", 
        "name": "Sirunyan, A. M."
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      {
        "affiliation": "Yerevan Phys Inst, Yerevan, Armenia", 
        "name": "Tumasyan, A."
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      {
        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Adam, W."
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      {
        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Ambrogi, F."
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      {
        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Asilar, E."
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        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Bergauer, T."
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        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Brandstetter, J."
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        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Dragicevic, M."
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        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Eroe, J."
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        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Del Valle, A. Escalante"
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      {
        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Flechl, M."
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      {
        "name": "Fruehwirth, R."
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        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Ghete, V. M."
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        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Hrubec, J."
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        "name": "Jeitler, M."
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      {
        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Krammer, N."
      }, 
      {
        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Kraetschmer, I."
      }, 
      {
        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Liko, D."
      }, 
      {
        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Madlener, T."
      }, 
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        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Mikulec, I."
      }, 
      {
        "affiliation": "Inst Hochenergiephys, Vienna, Austria", 
        "name": "Mikulec, I."
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    ], 
    "description": "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.", 
    "doi": "10.1016/j.physletb.2020.135409", 
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    "journal": {
      "title": "PHYSICS LETTERS B", 
      "volume": "804"
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    "publication_date": "2020-01-01", 
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    "title": "Study of J/psi meson production inside jets in pp collisions at N root s=8 TeV The CM Collaboration"
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