CP violation with hypermagnetic fields and electroweak baryogenesis

Details CP violation with hypermagnetic fields and electroweak baryogenesis CP violation with hypermagnetic fields and electroweak baryogenesis

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..562..319p&link_type=abstract

PARTICLES AND FIELDS: Ninth Mexican School. AIP Conference Proceedings, Volume 562, pp. 319-323 (2001).

Statistics

Applications

Charge Conjugation, Parity, Time Reversal, And Other Discrete Symmetries, Global Symmetries, Electroweak Radiative Corrections, Applications Of Electroweak Models To Specific Processes

Scientific paper

We show that in the presence of primordial magnetic fields, it is possible to produce a large enough amount of CP violation to possibly explain the baryon asymmetry of the universe. This can happen during the reflection of fermions off the true vacuum bubbles nucleated during a first order phase transition. The chiral nature of the fermion coupling to the background field in the symmetric phase can be used to construct two-fermion interference processes in analogy to the Bohm-Aharanov effect. By describing the transport of the CP asymmetry into the symmetric phase, it is possible to generate a baryon to entropy ratio ρB/s=(3-6)×10-11, which is close to the observed value based on uncleosynthesis considerations. .

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