Minimally flavored colored scalar in $ \overline{B}\to {D^{{\left( * \right)}}}\tau \overline{\nu} $ and the mass matrices constraints

@article{Dosner2013MinimallyFC,
  title={Minimally flavored colored scalar in \$ \overline\{B\}\to \{D^\{\{\left( * \right)\}\}\}\tau \overline\{\nu\} \$ and the mass matrices constraints},
  author={Ilja Dořsner and Svjetlana Fajfer and Nejc Ko{\vs}nik and Ivan Nǐsand{\vz}i{\'c}},
  journal={Journal of High Energy Physics},
  year={2013},
  volume={2013},
  pages={1-31}
}
  • Ilja Dořsner, Svjetlana Fajfer, +1 author Ivan Nǐsandžić
  • Published 2013
  • Physics
  • A bstractThe presence of a colored scalar that is a weak doublet with fractional electric charges of |Q| = 2/3 and |Q| = 5/3 with mass below 1 TeV can provide an explanation of the observed branching ratios in $ B\to {D^{{\left( * \right)}}}\tau \overline{\nu} $ decays. The required combination of scalar and tensor operators in the effective Hamiltonian for $ b\to c\tau \overline{\nu} $ is generated through the t-channel exchange. We focus on a scenario with a minimal set of Yukawa couplings… CONTINUE READING

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