kt-factorization for Hard Processes in Nuclei

Details kt-factorization for Hard Processes in Nuclei kt-factorization for Hard Processes in Nuclei

2010-09-11

arxiv.org/abs/1009.2141v2

Phys.Rev.Lett.106:022301,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.106.022301

Two widely proposed kt-dependent gluon distributions in the small-x saturation regime are investigated using two particle back-to-back correlations in high energy scattering processes. The Weizsacker-Williams gluon distribution, interpreted as the number density of gluon inside the nucleus, is studied in the quark-antiquark jet correlation in deep inelastic scattering. On the other hand, the unintegrated gluon distribution, defined as the Fourier transform of the color-dipole cross section, is probed in the direct photon-jet correlation in pA collisions. Dijet-correlation in pA collisions depends on both gluon distributions through combination and convolution in the large Nc limit.

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