Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-03-11
Phys.Lett.B675:181-189,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, 9 figures, some references added, slight modification in discussions
Scientific paper
We study the single transverse spin asymmetry for the inclusive pion production in the nucleon-nucleon collision, p^\uparrow p\to\pi X, based on the twist-3 mechanism in the collinear factorization. We derive the soft-fermion-pole (SFP) contribution to the twist-3 single-spin-dependent cross section associated with the twist-3 quark-gluon correlation functions in the polarized nucleon. We find that the SFP can give rise to a large effect to the asymmetry A_N owing to the large partonic hard cross sections with the large color factor, if the SFP function has a similar magnitude as the soft-gluon-pole (SGP) function, in spite of the absence of the "derivative term" for the SFP function unlike for the SGP function.
Koike Yuji
Tomita Tetsuya
No associations
LandOfFree
Soft-fermion-pole contribution to single-spin asymmetry for pion production in pp collisions 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 Soft-fermion-pole contribution to single-spin asymmetry for pion production in pp collisions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft-fermion-pole contribution to single-spin asymmetry for pion production in pp collisions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-123609