Limits on the electromagnetic and weak dipole moments of the tau-lepton in E6 superstring models

被引：25

作者：

Gutierrez-Rodriguez, A. ^{[1
]}

Hernandez-Ruiz, M. A. ^{[2
]}

Perez, M. A. ^{[3
]}

机构：

[1] Univ Autonoma Zacatecas, Fac Fis, Cuerpo Acad Particulas Campos & Astrofis, Zacatecas 98060, Mexico

[2] Univ Autonoma Zacatecas, Fac Ciencias Quim, Zacatecas 98060, Mexico

[3] CINVESTAV, Dept Fis, Mexico City 07000, DF, Mexico

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2007年 / 22卷 / 20期

关键词：

electric and magnetic moments; taus; neutral currents; models beyond the Standard Model;

D O I：

10.1142/S0217751X07036865

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We obtain limits on the electromagnetic and weak dipole moments of the tau-lepton in the framework of a left right symmetric model (LRSM) and a class of E-6 inspired models with an additional neutral vector boson Z(theta). Using as an input the data obtained by the L3 and OPAL collaborations for the reaction e(+) e(-) -> tau(+) tau(-) gamma, we get a stringent limit on the LRSM mixing angle phi, -1.66 x 10(-3) < phi < 1.22 x 10(-3), which in turn induces bounds on the tau weak dipole moments which are consistent with the bounds obtained recently by the DELPHI and ALEPH collaborations from the reaction e(+) e(-) -> tau(+) tau(-) . We also get similar bounds for the weak dipole moments of the tau lepton in the framework of E-6 superstring models.

引用

页码：3493 / 3508

页数：16

共 49 条

[41] CONSTRAINTS ON LEFT-RIGHT SYMMETRIC AND E6 SUPERSTRING MODELS FROM THE NUMBER OF LIGHT NEUTRINO SPECIES
Gutierrez-Rodriguez, A.
Hernandez-Ruiz, M. A.
Perez, M. A.
Perez-Vargas, F.
[J]. MODERN PHYSICS LETTERS A, 2009, 24 (02) : 135 - 141
[42] E6 BASED MECHANISM FOR THE GENERATION OF FERMION ELECTRIC-DIPOLE MOMENTS - AN APPLICATION TO THE SOLAR NEUTRINO PUZZLE
GRIFOLS, JA
SOLA, J
[J]. PHYSICS LETTERS B, 1987, 189 (1-2) : 63 - 67
[43] NEW PRODUCTION MECHANISMS FOR EXOTIC QUARKS OF SUPERSTRING-INSPIRED E6 MODELS AT EP-COLLIDERS
ROBINETT, RW
[J]. PHYSICAL REVIEW D, 1988, 37 (05): : 1321 - 1324
[44] NEUTRINO MASSES IN SUPERSTRING MODELS WITH E6 SINGLETS COMING FROM H1(END T)
GENG, CQ
XUE, PY
[J]. PHYSICAL REVIEW D, 1987, 35 (09): : 2832 - 2835
[45] MU-] E+GAMMA AND TAU-MU+GAMMA DECAYS IN STRING MODELS WITH E6 SYMMETRY
ARNOWITT, R
NATH, P
[J]. PHYSICAL REVIEW LETTERS, 1991, 66 (21) : 2708 - 2711
[46] Low energy theorems and the unitarity bounds in the extra U(1) superstring inspired E6 models -: art. no. 095106
Sharma, NK
Saxena, P
Parashar, P
Nagawat, AK
Singh, S
[J]. PHYSICAL REVIEW D, 2005, 72 (09):
[47] EFFECTS OF LEPTO-QUARKS ON PI-]IOTA-NU,MU-]E-GAMMA, AND DEE IN E6 MODELS BASED ON THE SUPERSTRING
KIZUKURI, Y
[J]. PHYSICS LETTERS B, 1987, 185 (1-2) : 183 - 188
[48] Search for anomalous weak dipole moments of the \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\tau$\end{document} lepton
[J]. The European Physical Journal C - Particles and Fields, 2003, 30 (3): : 291 - 304
[49] Anomalous magnetic and weak magnetic dipole moments of the τ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\tau $$\end{document} lepton in the simplest little Higgs model
M. A. Arroyo-Ureña
G. Hernández-Tomé
G. Tavares-Velasco
[J]. The European Physical Journal C, 2017, 77 (4):

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