Double transverse spin asymmetry in the p{sup {up_arrow}}p{sup {up_arrow}} Drell-Yan process from Sivers functions

Journal Article · Tue May 01 04:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.094012· OSTI ID:21020484

Zhun, Lu; Schmidt, Ivan ^[1]; Boqiang, Ma ^[2]

---

1. Center of Subatomic Studies and Departamento de Fisica, Universidad Tecnica Federico Santa Maria, Casilla 110-V, Valparaiso (Chile)
2. School of Physics and MOE Key Laboratory of Heavy Ion Physics, Peking University, Beijing 100871 (China)

We show that the transverse double spin asymmetry in the Drell-Yan process contributed only from the Sivers functions can be picked out by the weighting function (Q{sub T}/M{sup 2})(cos({phi}-{phi}{sub S{sub 1}})cos({phi}-{phi}{sub S{sub 2}})+3sin({phi}-{phi}{sub S{sub 1}})sin = ({phi}-{phi}{sub S{sub 2}})). The asymmetry is proportional to the product of two Sivers functions from each hadron f{sub 1T}{sup perpendicular(1)}xf{sub 1T}{sup perpendicular(1)}. Using two sets of Sivers functions extracted from the semi-inclusive deeply elastic scattering data at HERMES, we estimate this asymmetry in the p{sup {up_arrow}}p{sup {up_arrow}} Drell-Yan process which is possible to be performed in high energy storage ring at GSI. The prediction of double spin asymmetry in the Drell-Yan process contributed by the function g{sub 1T}(x,k{sub T}{sup 2}), which can be extracted by the weighting function (Q{sub T}/M{sup 2})(3cos({phi}-{phi}{sub S{sub 1}})cos({phi}-{phi}{sub S{sub 2}})+sin({phi}-{phi}{sub S{sub 1}})sin = ({phi}-{phi}{sub S{sub 2}})), is also given at GSI.

• OSTI ID: 21020484
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
DRELL MODEL
ELASTIC SCATTERING
HADRONS
POLARIZED BEAMS
POLARIZED TARGETS
PROTON-PROTON INTERACTIONS
SEMI-INCLUSIVE INTERACTIONS
SPIN
T QUARKS
WEIGHTING FUNCTIONS