标题： LEP中两光子碰撞中的喷注产生 显示英文标题

标题： Jet production in two-photon collisions at LEP

摘要： 喷流和双喷流产率在LEP2计划期间收集的准实光子碰撞中被研究，碰撞的电子-正电子质心系能量从189到209 GeV。 OPAL报告称，NLO微扰QCD与测量的微分双喷流截面有良好一致，这些截面达到双喷流系统的平均横向能量为25 GeV。 另一方面，L3发现相同的计算与横向上喷流动量大于约25 GeV的单喷流产率存在显著不一致。 显示英文摘要

摘要： Jet and di-jet production are studied in collisions of quasi-real photons collected during the LEP2 program at e+e- center-of-mass energies from 189 to 209 GeV. OPAL reports good agreement of NLO perturbative QCD with the measured differential di-jet cross sections, which reach a mean transverse energy of the di-jet system of 25 GeV. L3, on the other hand, finds drastic disagreement of the same calculation with single jet production for transverse jet momenta larger than about 25 GeV.