Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-08-04
Phys.Rev.D74:074015,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
Replaced with published in PHYSICAL REVIEW D 74, 074015 (2006) version
Scientific paper
10.1103/PhysRevD.74.074015
Within the LO QCD parton model of Semi Inclusive Deep Inelastic Scattering, $\ell N \to \ell h X$, with unintegrated quark distribution and fragmentation functions, we study the $\bfP_{hT}$ dependence of the double longitudinal-spin asymmetry $A_{LL}$. We include 1/Q kinematic corrections, which induce an azimuthal modulation of the asymmetry, analogous to the Cahn effect in unpolarized SIDIS. We show that a study of $A_{LL}$ and of the weighted DSA $A_{LL}^{\cos\phi_h}$ allows to extract the transverse momentum dependence of the unintegrated helicity distribution function $g_{1L}^q(x,k_\perp)$ [or $\Delta q(x, k_\perp)]$. Predictions, based on some models for the unknown functions, are given for ongoing COMPASS, HERMES and JLab experiments.
Anselmino Mauro
Efremov A. A.
Kotzinian Aram
Parsamyan Bakur
No associations
LandOfFree
Transverse momentum dependence of the quark helicity distributions and the Cahn effect in double-spin asymmetry $A_{LL}$ in Semi Inclusive DIS does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Transverse momentum dependence of the quark helicity distributions and the Cahn effect in double-spin asymmetry $A_{LL}$ in Semi Inclusive DIS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transverse momentum dependence of the quark helicity distributions and the Cahn effect in double-spin asymmetry $A_{LL}$ in Semi Inclusive DIS will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-49001