Was the Electroweak Phase Transition Preceded by a Color-Broken Phase?

Details Was the Electroweak Phase Transition Preceded by a Color-Broken Phase? Was the Electroweak Phase Transition Preceded by a Color-Broken Phase?

1999-02-02

arxiv.org/abs/hep-ph/9902220v2

Phys.Rev. D60 (1999) 105035

Physics

High Energy Physics

High Energy Physics - Phenomenology

35 pages, 12 figures; added references

Scientific paper

10.1103/PhysRevD.60.105035

It has been suggested, in connection with electroweak baryogenesis in the Minimal Supersymmetric Standard Model (MSSM), that the right-handed top squark has a negative mass squared parameter, such that its field could condense prior to the electroweak phase transition (EWPT). Thus color and electric charge could have been broken just before the EWPT. Here we investigate whether the tunneling rate from the color-broken vacuum can ever be large enough for the EWPT to occur in this case. We find that, even when all parameters are adjusted to their most favorable values, the nucleation rate is many orders of magnitude too small. We conclude that, without additional physics beyond the MSSM, the answer to our title question is ``no.'' This gives constraints in the plane of the light stop mass versus parameters related to stop mixing. However it may be possible to get color breaking in extended models, such as those with R-parity violation.

Affiliated with

Also associated with

No associations

Rating

Was the Electroweak Phase Transition Preceded by a Color-Broken Phase? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Was the Electroweak Phase Transition Preceded by a Color-Broken Phase?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Was the Electroweak Phase Transition Preceded by a Color-Broken Phase? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-458029