Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9861243 | Physics Letters B | 2005 | 6 Pages |
Abstract
We present a new mechanism for baryogenesis by introducing a heavy vector-like SU(2)W singlet quark(s) with Qem=23 quark U or Qem=â13 quark D. The lifetime of the heavy quark is assumed to be in the range 2Ã10â11s<Ï<1s. Being SU(2)W singlet, it survives the electroweak phase transition era. It mixes with SU(2)W doublet quarks with tiny mixing angles to satisfy the FCNC constraints, where a simple Z2 symmetry is suggested for realizing this scheme. The heavy quark asymmetry is generated in analogy with the old GUT scenario.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Hyung Do Kim, Jihn E. Kim, Takuya Morozumi,