Baryon-number violation in a quantum gas of W and Higgs bosons

Details Baryon-number violation in a quantum gas of W and Higgs bosons Baryon-number violation in a quantum gas of W and Higgs bosons

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrvl..62.1952g&link_type=abstract

Physical Review Letters, Volume 62, Issue 17, April 24, 1989, pp.1952-1955

Statistics

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3

Other Internal And Higher Symmetries, Classical And Semiclassical Techniques, Applications Of Electroweak Models To Specific Processes, Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

Use of a coherent-state representation of the sphaleron allows a direct calculation of its production rate in a thermal gas of W and Higgs bosons Technical considerations permit a straightforward calculation only in the case λ/g2~=1 (MH~=3MW), where λ is the Higgs-boson quartic coupling, and g is the SU(2) gauge coupling. For this case it is found that the rate is unsuppressed for temperatures T>=2.4MW(0), where MW(0) is the zero-temperature W mass. Thus anomalous B+L violation is also unsuppressed above this temperature.

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