Quark mixing at finite temperature

We show that finite-temperature effects induce nontrivial quark mixing in the SU(2) × U(1)-symmetric phase of the standard model. The finite temperature mixing matrix is temperature-independent and is related to the zero temperature matrix V as V T = V † + O(λ 4), where λ ⋍ 0.22 is the sine of the C...

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Bibliographic Details
Published in:Physics letters. B 1987-04, Vol.188 (1), p.133-137
Main Authors: Babu, K.S., Das, Ashok, Panigrahi, Prasanta
Format: Article
Language:English
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Summary:We show that finite-temperature effects induce nontrivial quark mixing in the SU(2) × U(1)-symmetric phase of the standard model. The finite temperature mixing matrix is temperature-independent and is related to the zero temperature matrix V as V T = V † + O(λ 4), where λ ⋍ 0.22 is the sine of the Cabibbo angle. As a consequence, CP-violatating parameters in the symmetric phase differ in sign from their zero-temperature counterparts.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(87)90719-2