Low scale seesaw model and lepton flavor violating rare B decays

T. Fujihara, S. K. Kang, Choong Sun Kim, D. Kimura, T. Morozumi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We study lepton flavor number violating rare B decays, b→slh± ll, in a seesaw model with low scale singlet Majorana neutrinos motivated by the resonant leptogenesis scenario. The branching ratios of inclusive decays b→slh±l̄l 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→sτμ and τ→μγ can be as large as 10-10 and 10-9 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(μ→eγ). In the model, the lepton number asymmetries are vanishing.

Original languageEnglish
Article number074011
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume73
Issue number7
DOIs
Publication statusPublished - 2006 Apr 21

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

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abstract = "We study lepton flavor number violating rare B decays, b→slh± ll, in a seesaw model with low scale singlet Majorana neutrinos motivated by the resonant leptogenesis scenario. The branching ratios of inclusive decays b→slh±l̄l 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→sτμ and τ→μγ can be as large as 10-10 and 10-9 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(μ→eγ). In the model, the lepton number asymmetries are vanishing.",
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Low scale seesaw model and lepton flavor violating rare B decays. / Fujihara, T.; Kang, S. K.; Kim, Choong Sun; Kimura, D.; Morozumi, T.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 73, No. 7, 074011, 21.04.2006.

Research output: Contribution to journalArticle

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AU - Fujihara, T.

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AU - Kim, Choong Sun

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AU - Morozumi, T.

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