Challenges in the extraction of TMDs from SIDIS data: perturbative vs non-perturbative aspects

Conference · Tue Sep 01 00:00:00 EDT 2015 · Proceedings of Science

OSTI ID:1224699

Boglione, Mariaelena ^[1]; Gonzalez Hernandez, Jose O. ^[2]; Melis, Stefano ^[3]; Prokudin, Alexey ^[4]

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1. aDipartimento di Fisica Teorica, Università di Torino, Via P. Giuria 1, I-10125 Torino, Italy
2. INFN, Sezione di Torino, and Dipartimento di Fisica Teorica, Università di Torino, Via P. Giuria 1, I-10125 Torino, Italy
3. Univ. Torino, Torino, Italy
4. Jefferson Laboratory, 12000 Jeerson Avenue, Newport News, VA 23606, USA

We present our recent results on the study of the Semi-Inclusive Deep Inelastic Scattering (SIDIS) cross section as a function of the transverse momentum, q_T. Using the Collins-Soper-Sterman (CSS) formalism, we study the matching between the region where fixed-order perturbative QCD can successfully be applied and the region where soft gluon resummation is necessary. We find that the commonly used prescription of matching through the so-called Y-factor cannot be applied in the SIDIS kinematical configurations we examine. We comment on the impact that the nonperturbative component has even at relatively high energies.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1224699
• Report Number(s): JLAB-THY-15-2141; DOE/OR/23177-3595
• Journal Information: Proceedings of Science, Vol. DIS2015; Conference: DIS 2015, April 27 - May 1, 2015, Southern Methodist University, Dallas, Texas
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS