Two loop electroweak corrections to and in the B-LSSM

Jin-Lei Yang; Tai-Fu Feng; Shu-Min Zhao; Rong-Fei Zhu; Xiu-Yi Yang; Hai-Bin Zhang

doi:10.1140/epjc/s10052-018-6174-5

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2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2018) 78: 714
https://doi.org/10.1140/epjc/s10052-018-6174-5

Regular Article - Theoretical Physics

Two loop electroweak corrections to $\bar{B}\rightarrow X_s\gamma$ and $B_s^0\rightarrow \mu ^+\mu ^-$ in the B-LSSM

Jin-Lei Yang¹, Tai-Fu Feng¹, Shu-Min Zhao¹, Rong-Fei Zhu¹, Xiu-Yi Yang² and Hai-Bin Zhang¹^*

¹ Department of Physics, Hebei University, Baoding, 071002, China
² Department of Science, University of Science and Technology Liaoning, Anshan, 114051, China

^* e-mail: hbzhang@hbu.edu.cn

Received: 15 May 2018
Accepted: 22 August 2018
Published online: 5 September 2018

Abstract

The rare decays $\bar{B}\rightarrow X_s\gamma$ and $B_s^0\rightarrow \mu ^+\mu ^-$ are important to research new physics beyond the standard model (SM). In this work, we investigate two loop electroweak corrections to $\bar{B}\rightarrow X_s\gamma$ and $B_s^0\rightarrow \mu ^+\mu ^-$ in the minimal supersymmetric extension of the SM with local $$B-L$$ gauge symmetry (B-LSSM), under a minimal flavor violating assumption for the soft breaking terms. In this framework, new particles and new definition of squarks can affect the theoretical predictions of these two processes, with respect to the MSSM. Considering the constraints from updated experimental data, the numerical results show that the B-LSSM can fit the experimental data for the branching ratios of $\bar{B}\rightarrow X_s\gamma$ and $B_s^0\rightarrow \mu ^+\mu ^-$ . The results of the rare decays also further constrain the parameter space of the B-LSSM.