Speaker
David d'Enterria
(CERN)
Description
We have derived a simple generic expression to compute the cross sections for double-parton scatterings
(DPS) in high-energy proton-nucleus and nucleus-nucleus collisions as a function of the
corresponding single-parton hard cross sections [1,2]. Estimates of DPS contributions at LHC energies for
(i) same-sign W-boson pair production in p-Pb, and (ii) double-J/$\psi$ production in Pb-Pb, are
obtained from NLO predictions with nuclear PDF modifications for the corresponding single-parton
scatterings. The first process can help determine the effective $\sigma_{\rm eff}$ parameter characterising
the transverse distribution of partons in the nucleon, whereas the second one provides interesting
insights on the event-by-event dynamics of J/$\psi$ production in Pb-Pb. The expected cross sections
and event rates after typical acceptance and efficiency losses, for various others DPS processes involving
quarkonia, jets, and gauge bosons ($\gamma$, W, Z) will be given for p-Pb and Pb-Pb collisions at the LHC.
[1] D. d'Enterria, A. Snigirev, Phys.Lett. B718 (2013) 1395
[2] D. d'Enterria, A. Snigirev, Phys.Lett. B727 (2013) 157
| On behalf of collaboration: | None |
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Primary author
David d'Enterria
(CERN)
Co-author
Alexandre Snigirev
(M.V. Lomonosov Moscow State University (RU))
