Forward di-jet production in p+Pb collisions in the small-x improved TMD factorization framework

van Hameren, A.; Kotko, P.; Kutak, K.; Marquet, C.; Petreska, E.; Sapeta, S.

doi:10.1007/JHEP12(2016)034

Title: Forward di-jet production in p+Pb collisions in the small-x improved TMD factorization framework

Journal Article · Mon Dec 12 00:00:00 EST 2016 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP12(2016)034· OSTI ID:1424002

van Hameren, A. ^[1]; Kotko, P. ^[2]; Kutak, K. ^[1]; Marquet, C. ^[3]; Petreska, E. ^[4]; Sapeta, S. ^[5]

Polish Academy of Sciences (PAS), Krakow (Poland). Henryk Niewodniczanski Inst. of Nuclear Physics
Pennsylvania State Univ., University Park, PA (United States)
Univ. Paris-Saclay, Palaiseau (France)
Univ. Paris-Saclay, Palaiseau (France); Univ. de Santiago de Compostela (Spain)
Polish Academy of Sciences (PAS), Krakow (Poland). Henryk Niewodniczanski Inst. of Nuclear Physics; European Organization for Nuclear Research (CERN), Geneva (Switzerland)

We study the production of forward di-jets in proton-lead and proton-proton collisions at the Large Hadron Collider. Such configurations, with both jets produced in the forward direction, impose a dilute-dense asymmetry which allows to probe the gluon density of the lead or proton target at small longitudinal momentum fractions. Even though the jet momenta are always much bigger than the saturation scale of the target, Qs, the transverse momentum imbalance of the di-jet system may be either also much larger than Qs, or of the order Qs, implying that the small-x QCD dynamics involved is either linear or non-linear, respectively. The small-x improved TMD factorization framework deals with both situations in the same formalism. In the latter case, which corresponds to nearly back-to-back jets, we find that saturation effects induce a significant suppression of the forward di-jet azimuthal correlations in proton-lead versus proton-proton collisions.

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Research Organization:: Pennsylvania State Univ., University Park, PA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FG02-93ER40771

OSTI ID:: 1424002

Journal Information:: Journal of High Energy Physics (Online), Vol. 2016, Issue 12; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 46 works

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