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arXiv 0705.4625hep-ex
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HERA核ep碰撞的强子末态和能谱

Hadronic Final States and Spectroscopy in ep Collisions at HERA

Carsten Schmitz

摘要:

利用HERA I运行期间收集的积分亮度在44 ~ 121 pb^-1之间的数据集,介绍了H1和ZEUS合作组在ep碰撞中的谱学和强子末态测量的最新结果。除了寻找可以解释为五夸克态的共振态外,还研究了Breit框架中的带电粒子动量谱和中性奇异强子产生的测量。此外,最近的两个即时光子的测量,并与pQCD计算进行比较。测量是在光生过程中进行的,四动量转移平方Q^2 \sim为0 GeV^2,或者在Q^2>1 GeV^2的深度非弹性散射中进行。

英文摘要:

Recent results on spectroscopy and the measurement of hadronic final states in ep collisions from the H1 and ZEUS collaborations are presented using data sets with an integrated luminosity between 44 and 121 pb^-1 collected during the HERA I running period. Besides a search for resonant states which could be interpreted as pentaquarks, a study of charged particle momentum spectra in the Breit frame and a measurement of neutral strange hadron production is shown. Furthermore two recent measurements of prompt photons are presented and compared with pQCD calculations. The measurements are performed in photoproduction with a four-momentum transfer squared Q^2\sim 0 GeV^2 or in deep inelastic scattering at Q^2>1 GeV^2.

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