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Charged-Higgs effects in a new B ---> D [Tau Nu] differential decay distribution

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We show that the decay mode B -> D tau nu is competitive with and complementary to B -> tau nu in the search for charged-Higgs effects. Updating the relevant form factors, we find that the differential distribution in the decay chain B -> D nu tau[-> pi nu] excellently discriminates betw...

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Bibliographic Details
Main Authors: Nierste, Ulrich (Author) , Trine, Stéphanie (Author) , Westhoff, Susanne (Author)
Format: Article (Journal) Chapter/Article
Language:English
Published: 2 Jun 2008
In: Arxiv
Year: 2008, Pages: ?
Online Access:Verlag, kostenfrei, Volltext: https://arxiv.org/abs/0801.4938v2
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Author Notes:Ulrich Nierste, Stephanie Trine, and Susanne Westhoff

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520 |a We show that the decay mode B -> D tau nu is competitive with and complementary to B -> tau nu in the search for charged-Higgs effects. Updating the relevant form factors, we find that the differential distribution in the decay chain B -> D nu tau[-> pi nu] excellently discriminates between Standard-Model and charged-Higgs contributions. By measuring the D and pi energies and the angle between the D and pi three-momenta one can determine the effective charged-Higgs coupling including a possible CP-violating phase. 
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650 4 |a B: branching ratio 
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650 4 |a decay: form factor 
650 4 |a differential cross section 
650 4 |a doublet: 2 
650 4 |a effective Hamiltonian 
650 4 |a Higgs particle: charged particle 
650 4 |a Higgs particle: effect 
650 4 |a Higgs particle: multiplet 
650 4 |a numerical calculations 
650 4 |a supersymmetry 
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