|
|||||
|
|
Cross sections and transverse single-spin asymmetries in forward neutral-pion production from proton collisions at sqrt[s]=200 GeV |
|
| Authors: | Adams J Adler C Aggarwal M M Ahammed Z Amonett J Anderson B D Anderson M Arkhipkin D Averichev G S Badyal S K Balewski J Barannikova O Barnby L S Baudot J Bekele S Belaga V V Bellwied R Berger J Bezverkhny B I Bhardwaj S Bhaskar P Bhati A K Bichsel H Billmeier A Bland L C Blyth C O Bonner B E Botje M Boucham A Brandin A Bravar A Cadman R V Cai X Z Caines H Calderón de la Barca Sánchez M Carroll J Castillo J Castro M Cebra D Chaloupka P Chattopadhyay S Chen H F Chen Y Chernenko S P Cherney M Chikanian A Choi B Christie W Coffin J P Cormier T M Cramer J G Crawford H J Das D Das S |
| Institution: | University of Birmingham, Birmingham, United Kingdom. |
| Abstract: | Measurements of the production of forward high-energy pi(0) mesons from transversely polarized proton collisions at sqrts]=200 GeV are reported. The cross section is generally consistent with next-to-leading order perturbative QCD calculations. The analyzing power is small at x(F) below about 0.3, and becomes positive and large at higher x(F), similar to the trend in data at sqrts]< or =20 GeV. The analyzing power is in qualitative agreement with perturbative QCD model expectations. This is the first significant spin result seen for particles produced with p(T)>1 GeV/c at a polarized proton collider. |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ | |