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Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

2012

Pran Nath

Vectorlike multiplets

Articles 1 - 3 of 3

Full-Text Articles in Physical Sciences and Mathematics

Chromoelectric Dipole Moment Of The Top Quark In Models With Vectorlike Multiplets, Tarek Ibrahim, Pran Nath Apr 2012

Chromoelectric Dipole Moment Of The Top Quark In Models With Vectorlike Multiplets, Tarek Ibrahim, Pran Nath

Pran Nath

The chromoelectric dipole moment of the top quark is calculated in a model with a vectorlike multiplet, which mixes with the third generation in an extension of the minimal supersymmetric standard model. Such mixings allow for new CP violating phases. Including these new CP phases, the chromoelectric dipole moment that generates an electric dipole of the top in this class of models is computed. The top chromoelectric dipole moment operator arises from loops involving the exchange of the W, the Z, as well as from the exchange involving the charginos, the neutralinos, the gluino, and the vectorlike multiplet and their …


Top Quark Electric Dipole Moment In A Minimal Supersymmetric Standard Model Extension With Vectorlike Multiplets, Tarek Ibrahim, Pran Nath Apr 2012

Top Quark Electric Dipole Moment In A Minimal Supersymmetric Standard Model Extension With Vectorlike Multiplets, Tarek Ibrahim, Pran Nath

Pran Nath

The electric dipole moment (EDM) of the top quark is calculated in a model with a vector like multiplet which mixes with the third generation in an extension of the minimal supersymmetric standard model. Such mixings allow for new CP violating phases. Including these new CP phases, the EDM of the top in this class of models is computed. The top EDM arises from loops involving the exchange of the W, the Z as well as from the exchange involving the charginos, the neutralinos, the gluino, and the vector like multiplet and their superpartners. The analysis of the EDM of …


Large Τ And Τ Neutrino Electric Dipole Moments In Models With Vectorlike Multiplets, Tarek Ibrahim, Pran Nath Apr 2012

Large Τ And Τ Neutrino Electric Dipole Moments In Models With Vectorlike Multiplets, Tarek Ibrahim, Pran Nath

Pran Nath

It is shown that the electric dipole moment of the τ lepton several orders of magnitude larger than predicted by the standard model can be generated from mixings in models with vectorlike mutiplets. The electric dipole moment (EDM) of the τ lepton arises from loops involving the exchange of the W, the charginos, the neutralinos, the sleptons, the mirror leptons, and the mirror sleptons. The EDM of the Dirac τ neutrino is also computed from loops involving the exchange of the W, the charginos, the mirror leptons, and the mirror sleptons. A numerical analysis is presented, and it is shown …