An update of the H1 highQ2analysis and observation of high energy isolated leptons in events with missingpt
作者:
Hans-Christian Schultz-Coulon,
期刊:
AIP Conference Proceedings
(AIP Available online 1998)
卷期:
Volume 432,
issue 1
页码: 59-68
ISSN:0094-243X
年代: 1998
DOI:10.1063/1.56027
出版商: AIP
数据来源: AIP
摘要:
Increasing luminosity at HERA now offers the possibility to study ep scattering close to the kinematic limit, given by the available center-of-mass energy of 300 GeV, and to investigate rare event topologies with sufficient statistics. In this context H1 and ZEUS both have reported an excess of events at very high momentum transfersQ2in thee+pdata recorded up to the end of 1996. Here a preliminary update of the H1 highQ2analysis is presented, including data from the first half of 1997, almost doubling the integrated luminosity of the already published result. In addition, we report on an analysis searching for events with an imbalance in transverse momentumpt.While the majority of events show topologies typical for charged current processes, five have been observed with an isolatede−or&mgr;±with largept.The corresponding Standard Model expectation from W production with subsequent decay into leptons is 1.75 events. ©1998 American Institute of Physics.
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