Contact Interactions and High-q 2 Events in E + P Collisions at Hera
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چکیده
We consider eeqq contact interactions as a possible origin of an excess of events above Standard Model predictions in e + p ! e + jet at high Q 2 observed by the H1 and ZEUS collaborations at HERA. The HERA data prefer chirality RL or LR contact terms and atomic physics parity violation measurements severely limit parity-odd contact terms. With equal left-right and right-left chirality interactions at an eeective scale of order 3 TeV we are able to reproduce the main features of the HERA data and still be consistent with Drell-Yan pair production at the Tevatron and hadron production at LEP 2 and TRISTAN.
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تاریخ انتشار 1997