1 Ocak 2020 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1140/epjc/s10052-020-08651-y", 
  "abstract": "<p>The invariant differential cross section of inclusive     $\\omega \\left(782\\right)$   meson production at midrapidity (    $|y|&lt;0.5$  ) in pp collisions at     $\\sqrt{s}=7\\phantom{\\rule{0.166667em}{0ex}}\\text{TeV}$   was measured with the ALICE detector at the LHC over a transverse momentum range of     $2&lt;{p}_{T}&lt;17\\phantom{\\rule{0.166667em}{0ex}}\\text{GeV}/c$  . The     $\\omega $   meson was reconstructed via its     $\\omega \\to {\\pi }^{+}{\\pi }^{-}{\\pi }^{0}$   decay channel. The measured     $\\omega $   production cross section is compared to various calculations: PYTHIA 8.2 Monash 2013 describes the data, while PYTHIA 8.2 Tune 4C overestimates the data by about 50%. A recent NLO calculation, which includes a model describing the fragmentation of the whole vector-meson nonet, describes the data within uncertainties below     $6\\phantom{\\rule{0.166667em}{0ex}}\\text{GeV}/c$  , while it overestimates the data by up to 50% for higher     ${p}_{T}$  . The     $\\omega /{\\pi }^{0}$   ratio is in agreement with previous measurements at lower collision energies and the PYTHIA calculations. In addition, the measurement is compatible with transverse mass scaling within the measured     ${p}_{T}$   range and the ratio is constant with     ${C}^{\\omega /{\\pi }^{0}}=0.67\u00b10.03\\phantom{\\rule{0.333333em}{0ex}}\\text{(stat)}\\phantom{\\rule{0.333333em}{0ex}}\u00b10.04\\phantom{\\rule{0.333333em}{0ex}}\\text{(sys)}\\phantom{\\rule{0.333333em}{0ex}}$   above a transverse momentum of     $2.5\\phantom{\\rule{0.166667em}{0ex}}\\text{GeV}/c$  .</p>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "European Physical Journal C", 
  "id": "104903", 
  "issue": "12", 
  "issued": {
    "date-parts": [
      [
        2020, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Production of     $\\omega $   mesons in pp collisions at     $\\sqrt{s}=7\\phantom{\\rule{0.166667em}{0ex}}\\text{TeV}$", 
  "type": "article-journal", 
  "volume": "80"
}