γγ interactions with KLOE

摘要：

Studies of γγ interactions are performed with the KLOE detector,without tagging of the outgoing e+e-.The data sample is from an integrated luminosity of 240 pb-1.It was collected at the φ-factory DAФNE with e+e-beams colliding at √s(～)1 GeV,below the φ resonance peak.We present preliminary results concerning the observation of the γγ→η process and the evidence for γγ→π0π0 production at low π0π0 invariant masses.

关键词： e+e-collisions pseudoscalar meson width π pair production

作者: Federico Nguyen

作者单位: INFN SezioneRoma TRE,Via della Vasca Navale 84,I-00146 Roma,Italy

会议类型: 国际会议

会议名称: 国际φ电子到ψ电子正负电子碰撞研讨会

会议地点: 北京

会议语种:英文

页码: 795-800

在线出版日期: 2009-10-13（万方平台首次上网日期，不代表论文的发表时间）