TY - JOUR
T1 - Baryogenesis in a Flat Direction with Neither Baryon nor Lepton Charge
AU - Chiba, Takeshi
AU - Takahashi, Fuminobu
AU - Yamaguchi, Masahide
PY - 2004
Y1 - 2004
N2 - We present a new mechanism of spontaneous baryogenesis. Usually such mechanisms require a derivative coupling between a scalar field and baryon current. In our model, the scalar field instead derivatively couples to a current associated with some global symmetry [Formula presented]. In this case, baryogenesis is still possible provided that an interaction exists, which violates the baryon and [Formula presented] symmetries simultaneously. As a concrete example, we discuss baryogenesis in a flat direction with neither baryon nor lepton charge.
AB - We present a new mechanism of spontaneous baryogenesis. Usually such mechanisms require a derivative coupling between a scalar field and baryon current. In our model, the scalar field instead derivatively couples to a current associated with some global symmetry [Formula presented]. In this case, baryogenesis is still possible provided that an interaction exists, which violates the baryon and [Formula presented] symmetries simultaneously. As a concrete example, we discuss baryogenesis in a flat direction with neither baryon nor lepton charge.
UR - http://www.scopus.com/inward/record.url?scp=85038323884&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85038323884&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.92.011301
DO - 10.1103/PhysRevLett.92.011301
M3 - Article
AN - SCOPUS:85038323884
SN - 0031-9007
VL - 92
SP - 4
JO - Physical Review Letters
JF - Physical Review Letters
IS - 1
ER -