Next-to-Leading Order QCD Factorization for Semi-Inclusive Deep Inelastic Scattering at Twist 4

Zhong-Bo Kang, Enke Wang, Xin-Nian Wang, and Hongxi Xing

Phys. Rev. Lett. 112, 102001 – Published 10 March 2014

Abstract

Within the framework of a high-twist approach, we calculate the next-to-leading order (NLO) perturbative QCD corrections to the transverse momentum broadening in semi-inclusive hadron production in deeply inelastic $e + A$ collisions, as well as lepton pair production in $p + A$ collisions. With explicit calculations of both real and virtual contributions, we verify, for the first time, the factorization theorem at twist 4 in NLO for the nuclear-enhanced transverse momentum weighted differential cross section and demonstrate the universality of the associated twist-4 quark-gluon correlation function. We also identify the QCD evolution equation for the twist-4 quark-gluon correlation function in a large nucleus, which can be solved to determine the scale dependence of the jet transport parameter in the study of jet quenching.

Received 8 November 2013

DOI:https://doi.org/10.1103/PhysRevLett.112.102001

Authors & Affiliations

Zhong-Bo Kang¹, Enke Wang², Xin-Nian Wang^2,3, and Hongxi Xing^1,2,4

¹Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
²Institute of Particle Physics and Key Laboratory of Lepton and Quark Physics (MOE), Central China Normal University, Wuhan 430079, China
³Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
⁴Interdisciplinary Center for Theoretical Study and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 112, Iss. 10 — 14 March 2014

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review Letters