Constraints on $Wtb$ anomalous coupling with $ B\to X_{s}\gamma $ and $B_{s}\to\mu^{+}\mu^{-}

Zhao-Hua Xiong; Lian Zhou

Constraints on $Wtb$ anomalous coupling with $ B\to X_{s}\gamma $ and $B_{s}\to\mu^{+}\mu^{-}

High Energy Physics - Phenomenology 2018-04-10 v1

Authors: Zhao-Hua Xiong , Lian Zhou

Abstract

We calculate the amplitudes of $b\to s$ transition in extension of the Standard Model with $Wtb$ anomalous couplings. We found that i) there exist the Ward identity violating terms in effective vertix of $b\to s\gamma$ . The terms, which come from the tensor parts of $Wtb$ anomalies, and can be canceled exactly by introducing corresponding $Wtb\gamma$ interactions, ii) $Br(B_{s} \to \mu^{+}\mu^{-})$ provides unique information on $\delta v_L$ which is set to zero in top decay experiments, and stringent bounds on $v_R,\ g_L$ by $Br(B\to X_s\gamma)$ are obtained.

Keywords

wtb anomalous couplings b to s transition standard model extension ward identity b to x_s gamma b_s to mu mu

Cite

@article{arxiv.1804.02841,
  title  = {Constraints on $Wtb$ anomalous coupling with $ B\to X_{s}\gamma $ and $B_{s}\to\mu^{+}\mu^{-}},
  author = {Zhao-Hua Xiong and Lian Zhou},
  journal= {arXiv preprint arXiv:1804.02841},
  year   = {2018}
}

Comments

10 pages, 3 figures

Constraints on $Wtb$ anomalous coupling with $ B\to X_{s}\gamma $ and $B_{s}\to\mu^{+}\mu^{-}

Abstract

Keywords

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