Constraints for the nuclear parton distributions from Z and W production at the LHC

Details Constraints for the nuclear parton distributions from Z and W production at the LHC Constraints for the nuclear parton distributions from Z and W production at the LHC

2010-10-26

arxiv.org/abs/1010.5392v2

JHEP 1103:071,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

The version accepted for publication in JHEP. New figures has been added, and we also discuss the single charged lepton produc

Scientific paper

10.1007/JHEP03(2011)071

The LHC is foreseen to finally bring also the nuclear collisions to the TeV scale thereby providing new possibilities for physics studies, in particular related to the electro-weak sector of the Standard Model. We study here the Z and W production in proton-lead and lead-lead collisions at the LHC, concentrating on the prospects of testing the factorization and constraining the nuclear modifications of the parton distribution functions (PDFs). Especially, we find that the rapidity asymmetries in proton-nucleus collisions, arising from the differences in the PDFs between the colliding objects, provide a decisive advantage in comparison to the rapidity-symmetric nucleus-nucleus case. We comment on how such studies will help to improve our knowledge of the nuclear PDFs.

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