Measurement of Transverse Single-Spin Asymmetries for Midrapidity Production of Neutral Pions and Charged Hadrons in Polarized p + p Collisions at √s = 200 GeV
スポンサーリンク
概要
- 論文の詳細を見る
Transverse single-spin asymmetries to probe the transverse-spin structure of the proton have been measured for neutral pions and nonidentified charged hadrons from polarized proton-proton collisions at midrapidity and s=200GeV. The data cover a transverse momentum (pT) range 1.0-5.0GeV/c for neutral pions and 0.5-5.0GeV/c for charged hadrons, at a Feynman-x value of approximately zero. The asymmetries seen in this previously unexplored kinematic region are consistent with zero within errors of a few percent. In addition, the inclusive charged hadron cross section at midrapidity from 0.5<pT<7.0GeV/c is presented and compared to next-to-leading order perturbative QCD (pQCD) calculations. Successful description of the unpolarized cross section above ∼2GeV/c suggests that pQCD is applicable in the interpretation of the asymmetry results in the relevant kinematic range.
- 2005-11-11
論文 | ランダム
- 高齢化社会を迎えるにあたって
- 社会保障と税制との相互調整ならびに給付配分の効率性に関する研究(昭和56年度研究プロジェクト報告)--所得税における「妻」の座の取扱い
- コメント (福祉改革の基本的方向を問う(第16回社会保障研究所シンポジウム))
- スウェ-デンにおける福祉と財政
- スウェ-デンの地方財政 (地方財源拡充の方途--諸外国との比較)