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Published byRyan Ryles Modified over 10 years ago
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Semileptonic decays of charmed and beauty baryons with sterile neutrinos in the final state
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Decays of mesons: 1) D s l + N 2) D K + l + N 3) B D* + l + N Decays of baryons: 1) Λ c Λ + l + N 2) Λ b Λ c +l + N Decays of mesons and baryons that give the biggest contribution to production of sterile neutrinos
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Matrix element
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Λ c Λ + l + N M N, GeV Branching ratio Br as the function of sterile neutrino mass M N
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Λ b Λ c + l + N M N, GeV Branching ratio Br as the function of sterile neutrino mass M N
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Λ c Λ + l + N E Λ, GeV Differential branching ratiosover the outgoing baryon energy E Λ
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Λ b Λ c + l + N E Λ c, GeV Differential branching ratiosover the outgoing baryon energy E Λ c
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Λ c Λ + l + N E l, GeV Differential branching ratiosover charged lepton energy E l
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Λ b Λ c + l + N E l, GeV Differential branching ratiosover charged lepton energy E l
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Λ c Λ + l + N E N, GeV Differential branching ratiosover charged lepton energy E N
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Λ b Λ c + l + N E N, GeV over charged lepton energy E N Differential branching ratios
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Comparing of branching ratios
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Constrains on mixing angles at sterile neutrino masses ranging within 2 < M N < 3 GeV (PRS collaboration), but these constrains seem to be very weak. Accordingly to the results of NuTeV collaboration: ifGeV
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