UNUSUAL ZETA-0 DECAYS IN SUPERSYMMETRY WITH A SUPERLIGHT GRAVITINO

被引：26

作者：

DICUS, DA ^{[1
]}

NANDI, S ^{[1
]}

WOODSIDE, J ^{[1
]}

机构：

[1] OKLAHOMA STATE UNIV,DEPT PHYS,STILLWATER,OK 74078

来源：

PHYSICAL REVIEW D | 1991年 / 43卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.43.2951

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Supergravity theory with a superlight gravitino (of mass approximately m(w)2M(Pl)-1) leads to many interesting Z0 decay modes which are not present in the standard model or in the usual supergravity theory. We discuss the signals associated with two such decay modes, Z0 --> SffBAR,PffBAR, where S(P) is a massless scalar (pseudoscalar) particle present in this theory, and f is a quark or a lepton. Lack of observation of this mode in the current measurements at the CERN e+e- collider LEP leads to a lower bound on the gravitino mass of 10(-14) GeV. Such decays will be observable with 10(6) Z0's at LEP if the gravitino mass is less than 10(-13) GeV.

引用

页码：2951 / 2955

页数：5

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