LEPTON NUMBER VIOLATION DECAYS IN E6 STRING MODEL

Date

1994-08-01

Author

Alıyev, Tahmasıb
CETIN, Y
SILAHTAROGLU, E

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

118
views

0
downloads

Lepton number violation decays l(i) --> l(j)gammagamma and l(j) --> 3l(j) are investigated in the framework of E6 superstring model and the explicit expression for these decay rates are obtained. Relations between lepton number violation decays l(i) --> l(j)gammagamma and l(i) --> l(j)gamma are established and it is shown that the relative value of these decays is independent of the details of the considered model. In the considered model we predict that BR(tau --> mugammagamma) is large than BR(mu --> egamma) in spite of the fact that tau --> mugammagamma decay is suppressed by a factor of alpha(el)/pi, compared to the mu --> --> egamma. Using the present experimental restrictions, the upper bound for tau --> mugammagamma decays and lower limits for the masses of new particles are obtained. Also it is shown that rare mu --> 3e decay has large BR in comparison with tau --> 3mu and tau --> 3e decays.

Subject Keywords

Nuclear and High Energy Physics, Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics

URI

https://hdl.handle.net/11511/41884

Journal

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS

DOI

https://doi.org/10.1007/bf02775758

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

LEPTON FLAVOR VIOLATING HIGGS DECAYS AND UNPARTICLE PHYSICS Iltan, E. O. (World Scientific Pub Co Pte Lt, 2009-06-07) We predict the branching ratios of the lepton flavor violating Higgs decays H-0 -> e(+/-)mu(+/-), H-0 -> e(+/-)tau(+/-) and H-0 -> mu(+/-)tau(+/-) in the case that the lepton flavor violation is carried by the scalar unparticle mediation. We observe that their branching ratios are strongly sensitive to the unparticle scaling dimension and they can reach the values of the order of 10(-4), for the heavy lepton flavor case and for the small values of the scaling dimension.
ANTISYMMETRIC TENSOR UNPARTICLE AND THE RADIATIVE LEPTON FLAVOR VIOLATING DECAYS Iltan, E. O. (World Scientific Pub Co Pte Lt, 2012-04-20) We study the contribution of the antisymmetric tensor unparticle mediation to the branching ratios of the radiative lepton flavor violating decays and predict a restriction region for free parameters of the scenario by using experimental upper limits. We observe that the branching ratios of the radiative lepton flavor violating decays are sensitive to the fundamental mass scales of the scenario and to the scale dimension of antisymmetric tensor unparticle. We obtain a more restricted set for the free parame...
LEPTON FLAVOR CONSERVING Z BOSON DECAYS AND SCALAR UNPARTICLE Iltan, E. O. (World Scientific Pub Co Pte Lt, 2009-02-20) We predict the contribution of scalar unparticle to the branching ratios of the lepton flavor conserving Z -> l(+)l(-) decays and we study the discrepancy between the experimental and the QED corrected standard model branching ratios. We observe that these decays are sensitive to the unparticle scaling dimension d(u) for its small values, especially for heavy lepton flavor output.
Lepton flavor violating radion decays in the Randall-Sundrum scenario Iltan, E. O.; Korutlu, B. (IOP Publishing, 2008-06-01) We predict the branching ratios of the lepton flavor violating radion decays r --> e(+/-)mu(+/-), r --> e(+/-)tau(+/-) and r --> mu(+/-)tau(+/-) in the two Higgs doublet model, in the framework of the Randall-Sundrum scenario. We observe that their branching ratios are at most of the order of 10(-8), for small values of radion mass and they decrease with increasing values of mr. Among these processes, the r --> tau(+/-)mu(+/-) decay would be the most suitable one to measure its branching ratio.
Dualisation of the Salam-Sugin D-8 supergravity Dereli, T; Yilmaz, NT (Elsevier BV, 2004-07-19) The first-order formulation of the Salam-Sezgin D = 8 supergravity coupled to N vector multiplets is discussed. The non-linear realization of the bosonic sector of the D = 8 matter coupled Salam-Sezgin supergravity is introduced by the dualisation of the fields and by constructing the Lie superalgebra of the symmetry group of the doubled field strength. (C) 2004 Published by Elsevier B.V.

Citation Formats

T. Alıyev, Y. CETIN, and E. SILAHTAROGLU, “LEPTON NUMBER VIOLATION DECAYS IN E6 STRING MODEL,” NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS, pp. 1183–1193, 1994, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41884.