1 Ocak 2020 Dergi makalesi Açık Erişim

CERN İşbirliği

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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>CERN İşbirliği</dc:creator>
  <dc:date>2020-01-01</dc:date>
  <dc:description>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     ${C}^{\omega /{\pi }^{0}}=0.67±0.03\phantom{\rule{0.333333em}{0ex}}\text{(stat)}\phantom{\rule{0.333333em}{0ex}}±0.04\phantom{\rule{0.333333em}{0ex}}\text{(sys)}\phantom{\rule{0.333333em}{0ex}}$   above a transverse momentum of     $2.5\phantom{\rule{0.166667em}{0ex}}\text{GeV}/c$  .</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/104903</dc:identifier>
  <dc:identifier>oai:zenodo.org:104903</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>European Physical Journal C 80(12)</dc:source>
  <dc:title>Production of     $\omega $   mesons in pp collisions at     $\sqrt{s}=7\phantom{\rule{0.166667em}{0ex}}\text{TeV}$</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>