Very high Q2 physics at HERA

被引：0
作者：
Zetsche, F [1 ]
机构：
[1] Univ Hamburg, Inst Expt Phys 2, D-22761 Hamburg, Germany
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 1999年 / 71卷
关键词：
D O I：
10.1016/S0920-5632(98)00320-X
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Recent measurements from the H1 and ZEUS experiments at HERA in deep-inelastic ep scattering at very high values of the squared 4-momentum transfer Q(2) are discussed and compared to predictions of the Standard Model. Both experiments observe a large excess of events in neutral current (NC) scattering, ep --> eX, at values of Q(2) > 15000 GeV2 and a small excess of events in charged current (CC) scattering, ep --> nu X. The probability that the observed event rates correspond to a statistical fluctuation compatible with the Standard Model cross sections is about 1% for NC reactions. This observation has driven speculations about possible physics beyond the Standard Model.
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页码：21 / 30
页数：10
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