Has the substructure of quarks and leptons been found also by the H1 and ZEUS detectors at DESY HERA?

被引：10

作者：

Akama, K ^{[1
]}

Katsuura, K ^{[1
]}

Terazawa, H ^{[1
]}

机构：

[1] HEARO,INST PARTICLE & NUCL STUDIES,TANASHI,TOKYO 188,JAPAN

来源：

PHYSICAL REVIEW D | 1997年 / 56卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.56.R2490

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The significant excess of events recently found by the H1 and ZEUS Collaborations at DESY HERA in the deep-inelastic e(+)p scattering for high momentum-transfers squared Q(2)> 15 000 GeV2 over the expectation of the standard model can be explained by either one of the following possible consequences of the substructure of quarks and leptons: (1) production of leptoquarks (Phi), (2) exchange of an excited Z boson (Z'), (3) intrinsic form factors of quarks (or leptons), (4) intrinsic anomalous magnetic moments of quarks, (5) production of excited quarks (q*), or (6) that of excited positrons (e(*+)). The masses of these new particles are estimated to be m(Phi)congruent to 280-440 GeV, m(Z')congruent to 200-250 GeV, m(q*)congruent to 120-140 GeV, and m(e*)congruent to 2300-370 GeV, although possibilities (2) and (5) are excluded by the currently available experimental constraints.

引用

页码：R2490 / R2494

页数：5

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