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Analyzing New Physics in $\bar{B}^0 \to D^{(\ast)}\tau^-\bar\nu_{\tau}$

High Energy Physics - Phenomenology 2017-02-23 v1
Authors: Chien-Thang Tran , Mikhail A. Ivanov , Jürgen G. Körner
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Abstract

We discuss possible new physics (NP) effects beyond the standard model (SM) in the exclusive decays Bˉ0→D(∗)τ−νˉτ\bar{B}^0 \to D^{(\ast)} \tau^- \bar{\nu}_{\tau}. Starting with a model-independent effective Hamiltonian including non-SM four-Fermi operators, we show how to obtain experimental constraints on different NP scenarios and investigate their effects on a large set of physical observables. The Bˉ0→D(∗)\bar{B}^0 \to D^{(\ast)} transition form factors are calculated in the full kinematic q2q^2 range by employing the covariant confined quark model developed by our group.

Keywords

new physics B meson decays semileptonic decays effective Hamiltonian four-Fermi operators covariant confined quark model form factors

Cite

@article{arxiv.1702.06910,
  title  = {Analyzing New Physics in $\bar{B}^0 \to D^{(\ast)}\tau^-\bar\nu_{\tau}$},
  author = {Chien-Thang Tran and Mikhail A. Ivanov and Jürgen G. Körner},
  journal= {arXiv preprint arXiv:1702.06910},
  year   = {2017}
}

Comments

12 pages, 8 figures. Talk given at The Helmholtz International Summer School (HISS) - Dubna International Advanced School of Theoretical Physics (DIAS-TH) "Quantum Field Theory at the Limits: from Strong Fields to Heavy Quarks", JINR, Dubna, 18-30 July, 2016

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