Supergravity at colliders

被引：117

作者：

Buchmüller, W

Hamaguchi, K ^{[1
]}

Rau, M

Yanagida, T

机构：

[1] DESY, Deutsch Elektronen Synchrotron, D-22603 Hamburg, Germany

[2] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[3] Univ Tokyo, Res Ctr Early Universe, Tokyo, Japan

来源：

PHYSICS LETTERS B | 2004年 / 588卷 / 1-2期

关键词：

D O I：

10.1016/j.physletb.2004.03.016

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider supersymmetric theories where the gravitino is the lightest superparticle (LSP). Assuming that the long-lived next-to-lightest superparticle (NSP) is a charged slepton, we investigate two complementary ways to prove the existence of supergravity in nature. The first is based on the NSP lifetime which in supergravity depends only on the Planck scale and the NSP and gravitino masses. With the gravitino mass inferred from kinematics, the measurement of the NSP lifetime will test an unequivocal prediction of supergravity. The second way makes use of the 3-body NSP decay. The angular and energy distributions and the polarizations of the final state photon and lepton carry the information on the spin of the gravitino and on its couplings to matter and radiation. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：90 / 98

页数：9

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