Low scale seesaw model and lepton flavor violating rare B decays

Journal Article · Sat Apr 01 04:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.73.074011· OSTI ID:20782807

Fujihara, T; Kimura, D; Morozumi, T ^[1]; Kang, S K ^[2]; Kim, C S ^[3]

---

1. Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Japan, 739-8526 (Japan)
2. Seoul National University, Seoul 151-734 (Korea, Republic of)
3. Graduate School of Science, Hiroshima University, Higashi-Hiroshima, 739-8526 (Japan)

We study lepton flavor number violating rare B decays, b{yields}sl{sub h}{sup {+-}}l{sub l}{sup {+-}}, in a seesaw model with low scale singlet Majorana neutrinos motivated by the resonant leptogenesis scenario. The branching ratios of inclusive decays b{yields}sl{sub h}{sup {+-}}l{sub l}{sup {+-}} with two almost degenerate singlet neutrinos at TeV scale are investigated in detail. We find that there exists a class of seesaw model in which the branching fractions of b{yields}s{tau}{mu} and {tau}{yields}{mu}{gamma} can be as large as 10{sup -10} and 10{sup -9} within the reach of Super B factories, respectively, without being in conflict with neutrino mixings and mass-squared difference of neutrinos from neutrino data, invisible decay width of Z, and the present limit of Br({mu}{yields}e{gamma}). In the model, the lepton number asymmetries are vanishing.

• OSTI ID: 20782807
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 73; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B MESONS
B QUARKS
BRANCHING RATIO
CONSERVATION LAWS
FLAVOR MODEL
LEPTON NUMBER
MIXING
MUONS
NEUTRINO OSCILLATION
NEUTRINOS
PARTICLE WIDTHS
REST MASS
S QUARKS
SEMILEPTONIC DECAY
TEV RANGE