TY - JOUR
T1 - Soft leptogenesis and gravitino dark matter in gauge mediation
AU - Hamaguchi, Koichi
AU - Yokozaki, Norimi
N1 - Funding Information:
We would like to thank M. Endo, T. Moroi and F. Takahashi for useful discussions. N.Y. is supported by Grant-in-Aid for Scientific Research, No. 22-7585 from JSPS, Japan . The work of K.H. was supported by JSPS Grant-in-Aid for Young Scientists (B) ( 21740164 ) and Grant-in-Aid for Scientific Research (A) ( 22244021 ). This work was supported by World Premier International Center Initiative (WPI Program), MEXT, Japan .
PY - 2011/1/3
Y1 - 2011/1/3
N2 - We study soft leptogenesis in gauge mediated supersymmetry breaking models with an enhanced A-term for the right-handed neutrino. We find that this scenario can explain the baryon asymmetry of the present universe, consistently with the gravitino dark matter for a wide range of gravitino mass m3/2=O(MeV)-O(GeV). We also propose an explicit model which induces the necessary A-term for the right-handed neutrino.
AB - We study soft leptogenesis in gauge mediated supersymmetry breaking models with an enhanced A-term for the right-handed neutrino. We find that this scenario can explain the baryon asymmetry of the present universe, consistently with the gravitino dark matter for a wide range of gravitino mass m3/2=O(MeV)-O(GeV). We also propose an explicit model which induces the necessary A-term for the right-handed neutrino.
KW - Gravitino dark matter
KW - Leptogenesis
UR - http://www.scopus.com/inward/record.url?scp=78650304102&partnerID=8YFLogxK
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U2 - 10.1016/j.physletb.2010.10.031
DO - 10.1016/j.physletb.2010.10.031
M3 - Article
AN - SCOPUS:78650304102
VL - 694
SP - 398
EP - 401
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 4-5
ER -