تقرير
QCD corrections to longitudinal spin asymmetries in $W^\pm$-boson production at RHIC
| العنوان: | QCD corrections to longitudinal spin asymmetries in $W^\pm$-boson production at RHIC |
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| المؤلفون: | von Arx, C., Gehrmann, T. |
| سنة النشر: | 2011 |
| المجموعة: | High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology |
| الوصف: | The polarized antiquark distributions in the proton can be measured by studying spin asymmetries in vector boson production in longitudinally polarized proton-proton collisions. The STAR and PHENIX experiments at BNL RHIC have reported first observations of single spin asymmetries in $W^\pm$-production most recently. We compute the QCD corrections to single and double spin asymmetries, taking account of the leptonic decay of the $W^\pm$ boson and of restrictions on the kinematical acceptance of the detectors. The QCD corrections have only a small impact on the asymmetries, such that a reliable extraction of the polarized antiquark distributions can be envisaged once more precise measurements are made. Comment: LaTeX, 12 pages, typos corrected, references added |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.physletb.2011.04.062 |
| الوصول الحر: | http://arxiv.org/abs/1103.1465Test |
| رقم الانضمام: | edsarx.1103.1465 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.physletb.2011.04.062 |
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