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Coherent photoproduction of $psi$ and $Upsilon$ mesons in ultraperipheral pPb and PbPb collisions at the CERN LHC

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 نشر من قبل Adeola Adeluyi
 تاريخ النشر 2013
  مجال البحث
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Exclusive photoproduction of vector mesons in the perturbative two-gluon exchange formalism depends significantly on nucleon and nuclear gluon distributions. In the present study we calculate total cross sections and rapidity distributions of $J/psi(1s)$, $psi(2s)$, $Upsilon(1s)$, $Upsilon(2s)$, and $Upsilon(3s)$ in ultraperipheral proton-lead (pPb) and lead-lead (PbPb) collisions at the CERN Large Hadron Collider (LHC) at $sqrt{s_{_{NN}}}=5$ TeV and $sqrt{s_{_{NN}}}=2.76$ TeV respectively. Effects of gluon shadowing are investigated and potentials for constraining nuclear gluon modifications are discussed.



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