Single spin asymmetries in lp{yields}hX processes: A test of factorization

Journal Article · Mon Feb 01 00:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.034007· OSTI ID:21409162

Anselmino, M; Boglione, M; Prokudin, A ^[1]; D'Alesio, U ^[2]; Melis, S ^[3]; Murgia, F ^[4]

---

1. Dipartimento di Fisica Teorica, Universita di Torino, Via P. Giuria 1, I-10125 Torino (Italy)
2. Dipartimento di Fisica, Universita di Cagliari, I-09042 Monserrato (Italy)
3. Dipartimento di Scienze e Tecnologie Avanzate, Universita del Piemonte Orientale, Viale T. Michel 11, I-15121 Alessandria (Italy)
4. INFN, Sezione di Cagliari, C.P. 170, I-09042 Monserrato (Italy)

Predictions for the transverse single spin asymmetry (SSA), A{sub N}, are given for the inclusive processes lp{sup {up_arrow}{yields}h}X and lp{sup {up_arrow}{yields}j}et+X, which could be measured in operating or future experiments. These estimates are based on the Sivers distributions and the Collins fragmentation functions which fit the azimuthal asymmetries measured in semi-inclusive deep inelastic scattering (SIDIS) processes (lp{sup {up_arrow}{yields}l'}hX). The factorization in terms of transverse momentum dependent distribution and fragmentation functions (TMD factorization)--which supplies the theoretical framework in which SIDIS azimuthal asymmetries are analyzed--is assumed to hold also for the lp{yields}hX inclusive process at large P{sub T}. A measurement of A{sub N} would then provide a direct test of the validity of the TMD factorization in this case and would have important consequences for the study and understanding of SSAs in pp{sup {up_arrow}{yields}h}X processes.

• OSTI ID: 21409162
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevD.81.034007; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
DEEP INELASTIC SCATTERING
DISTRIBUTION
FACTORIZATION
FORECASTING
FRAGMENTATION
SPIN
TRANSVERSE MOMENTUM
ANGULAR MOMENTUM
INELASTIC SCATTERING
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LINEAR MOMENTUM
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
SCATTERING