Excess of events at very high Q² at HERA

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• 作者：On behalf of H1 ; ZEUS collaborations ; V. Lemaitre
• 刊名：Nuclear Physics B - Proceedings Supplements
• 出版年：1998
• 出版时间：May 1998
• 年：1998
• 卷：64
• 期：1-3
• 页码：184-187
• 全文大小：324 K

文摘

Deep-inelastic scattering events produced in positron-proton collisions with a transferred square momentum Q² up to 41000 GeV² have been studied, for the first time, at HERA. For Q² > 15000 GeV² both H1 and ZEUS see an excess of events. Using the data sample collected during the years 1994 to 1996, H1 observes 12 NC events while 4.71±0.76 events are expected and ZEUS has found two events above Q² > 35000 GeV² where 0.145±0.013 events are expected. The CC analysis in the same Q² range is also presented.