Spin effects in large rapidity neutral pion production at STAR

Details Spin effects in large rapidity neutral pion production at STAR Spin effects in large rapidity neutral pion production at STAR

2004-12-13

arxiv.org/abs/hep-ex/0412035v1

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 2 figures, Submitted talk presented at the "16th International spin physics symposium" (SPIN2004) 10-16 Oct 2004, Tri

Scientific paper

First measurements of large Feynman x (x_F) neutral pion production in polarized proton collisions at sqrt(s)=200 GeV were reported previously. Cross section measurements at =3.3 and 3.8$ and analyzing power (A_N) measurements at =3.8 were completed for 0.3 < x_F < 0.6. The cross section was found to be consistent with next-to-leading order perturbative QCD calculations. In that framework, the dominant subprocess is partonic collisions of valence quarks on low Bjorken-x gluons. The A_N was found to be large and positive and increasing with x_F, and consistent with phenomonological calculations based on the Collins effect, the Sivers effect and initial-state and final-state higher twist contributions. Subsequent data have been acquired with transverse polarized proton collisions at RHIC at sqrt(s)=200 GeV. The status of the analysis and preliminary results will be presented.

Affiliated with

Also associated with

No associations

Rating

Spin effects in large rapidity neutral pion production at STAR 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 Spin effects in large rapidity neutral pion production at STAR, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin effects in large rapidity neutral pion production at STAR will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-115408