What if charged current events at large Q(2) are observed at HERA?

被引：34

作者：

Altarelli, G ^{[1
]}

Giudice, GF ^{[1
]}

Mangano, ML ^{[1
]}

机构：

[1] UNIV ROMA 3,ROME,ITALY

来源：

NUCLEAR PHYSICS B | 1997年 / 506卷 / 1-2期

关键词：

HERA; charged currents; leptoquarks; supersymmetry; R-parity;

D O I：

10.1016/S0550-3213(97)00534-8

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：

An excess of events at large Q(2) with a positron in the final state has been observed at HERA which, if confirmed, could be a signal of new physics. It is not clear at present if a signal of comparable rate is also seen in the charged-current channel (with an antineutrino in the final state). In this note we analyse the implications of the presence of such a signal in models of new physics based on contact terms, leptoquarks and squarks with R-violating decays. We find that in all cases the most likely possibility is that the charged-current signal is absent. As a consequence, if this signal is present the resulting indications are very selective. In particular for squarks only charged-current events with multi-quark final states are possible with quite definite predictions on the spectrum of supersymmetric particles. (C) 1997 Elsevier Science B.V.

引用

页码：29 / 47

页数：19

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