Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-04-20
Phys.Lett. B615 (2005) 200-206
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, 4 figures, to appear in PLB
Scientific paper
10.1016/j.physletb.2005.04.002
Taking into account the effect of final state interaction, we calculate the non-zero (na\"{i}ve) $T$-odd transverse momentum dependent distribution $h_1^{\perp}(x,\kp^2)$ of the pion in a quark-spectator-antiquark model with effective pion-quark-antiquark coupling as a dipole form factor. Using the model result we estimate the $\cos 2\phi$ asymmetries in the unpolarized $\pi^- N$ Drell-Yan process which can be expressed as $h_1^{\perp}\times\bar{h}_1^{\perp}$. We find that the resulting $h_{1\pi}^\p(x,\kp^2)$ has the advantage to reproduce the asymmetry that agrees with the experimental data measured by NA10 Collaboration. We estimate the $\cos2\phi$ asymmetries averaged over the kinematics of NA10 experiments for 140, 194 and 286 GeV $\pi^-$ beam and compare them with relevant experimental data.
Lu Zhun
Ma Bo-Qiang
No associations
LandOfFree
Azimuthal asymmetry in unpolarized $πN$ Drell-Yan process 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 Azimuthal asymmetry in unpolarized $πN$ Drell-Yan process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Azimuthal asymmetry in unpolarized $πN$ Drell-Yan process will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-315257