Dijets in p + Pb collisions and their quantitative constraints for nuclear PDFs - INSPIRE

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Dijets in p + Pb collisions and their quantitative constraints for nuclear PDFs

Hannu Paukkunen
(
- Helsinki Inst. of Phys. and
- Jyvaskyla U.
)
,
Kari J. Eskola
(
- Helsinki Inst. of Phys. and
- Jyvaskyla U.
)
,
Carlos Salgado
(
- Santiago de Compostela U., IGFAE
)

Jul 10, 2014

6 pages

Part of Proceedings, 24th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 2014) : Darmstadt, Germany, May 19-24, 2014, 331-336

Published in:

Nucl.Phys.A 931 (2014) 331-336

Contribution to:

- Quark Matter 2014
, 331-336

Published: Jul 10, 2014

e-Print:

1408.4563 [hep-ph]

DOI:

10.1016/j.nuclphysa.2014.07.012

View in:

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Abstract: (Elsevier)

We present a perturbative QCD analysis concerning the production of high-pT dijets in p + Pb collisions at the LHC. The next-to-leading order corrections, scale variations and free-proton PDF uncertainties are found to have only a relatively small influence on the normalized dijet rapidity distributions. Interestingly, however, these novel observables prove to retain substantial sensitivity to the nuclear effects in the PDFs. Especially, they serve as a more robust probe of the nuclear gluon densities at x>0.01 , than e.g. the inclusive hadron production. We confront our calculations with the recent data by the CMS Collaboration. These preliminary data lend striking support to the gluon antishadowing similar to that in the EPS09 nuclear PDFs.

Note:

Transcription of the talk given in Quark Matter 2014 conference

Nuclear parton distributions
Dijets
PDF reweighting
CERN LHC Coll
p nucleus: scattering
lead: nucleus
dijet: rapidity
dijet: production
dijet: transverse momentum
transverse momentum: high

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Figures(6)

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