| γγ interactions with KLOE |
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| 作者姓名： | Federico Nguyen (on behalf of the KLOE collaboration) |
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| 作者单位： | INFN Sezione ``Roma TRE', Via della Vasca Navale 84, I-00146 Roma, Italy |
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| 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 DAONE 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→π^0π^0 production at low π^0π^0 invariant masses.
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| 关 键 词： | 相互作用 积分亮度 数据样本 探测器 共振峰 不变群 碰撞 π |
| 收稿时间： | 2010-01-25 |
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