New formulas and predictions for running masses at higher scales in MSSM |
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Authors: | MK Parida B Purkayastha |
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Institution: | (1) Physics Department, North Eastern Hill University, Shillong 793022, India , IN;(2) The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy , IT |
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Abstract: | The effects of the scale dependent vacuum expectation values (VEVs) on the running masses of quarks and leptons in non-SUSY
gauge theories have been considered by a number of authors. Here we use RGEs of the VEVs, and the gauge and Yukawa couplings
in the MSSM to analytically derive new one loop formulas for the running masses above the SUSY breaking scale. Some of the
masses exhibit a substantially different behaviour with respect to their dependence on the gauge and Yukawa couplings when
compared with earlier formulas in the MSSM derived ignoring RGEs of VEVs. In particular, the masses of the first two generations
are found to be independent of the Yukawa couplings of the third generation in the small mixing limit. New numerical estimates
at the two loop level are also presented.
Received: 30 July 1999 / Published online: 6 April 2000 |
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