标题： HERA高Q^2深度非弹性散射中强子末态电荷不对称性的观测 显示英文标题

标题： Observation of the Hadronic Final State Charge Asymmetry in High Q^2 Deep-Inelastic Scattering at HERA

摘要： 首次测量了在HERA的深度非弹性ep中性电流散射中，硬相互作用的强子末态中的电荷不对称性。 该测量是在负的四动量转移平方值范围100<Q^2<8,000 GeV^2内进行的。 研究了在布雷特框架的电流区域中，正负粒子的缩放动量x_p的事件归一化分布之间的差异，以及其作为Q函数的演化情况。 结果与强子和部分子层次的蒙特卡罗模型进行了比较。 显示英文摘要

摘要： A first measurement is presented of the charge asymmetry in the hadronic final state from the hard interaction in deep-inelastic ep neutral current scattering at HERA. The measurement is performed in the range of negative squared four momentum transfer 100<Q^2<8,000 GeV^2. The difference between the event normalised distributions of the scaled momentum, x_p, for positively and negatively charged particles, measured in the current region of the Breit frame, is studied together with its evolution as a function of Q. The results are compared to Monte Carlo models at the hadron and parton level.