Flavor non-universal gauge interactions and anomalies in B-meson decays

Yong Tang; Yue-Liang Wu

doi:10.1088/1674-1137/42/3/033104

Chinese Physics C> 2018, Vol. 42> Issue(3) : 033104 DOI: 10.1088/1674-1137/42/3/033104

Flavor non-universal gauge interactions and anomalies in B-meson decays

Yong Tang ¹ ,
Yue-Liang Wu ^2,3,4

1.
Department of Physics, Faculty of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
2.
International Centre for Theoretical Physics Asia-Paciflc, Beijing, China
3.
Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
4.
University of Chinese Academy of Sciences, Beijing 100049, China

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Abstract：
Motivated by flavor non-universality and anomalies in semi-leptonic B-meson decays, we present a general and systematic discussion about how to construct anomaly-free U(1)' gauge theories based on an extended standard model with only three right-handed neutrinos. If all standard model fermions are vector-like under this new gauge symmetry, the most general family non-universal charge assignments, (a,b,c) for three-generation quarks and (d,e,f) for leptons, need satisfy just one condition to be anomaly-free, 3 (a+b+c)=-(d+e+f). Any assignment can be linear combinations of five independent anomaly-free solutions. We also illustrate how such models can generally lead to flavor-changing interactions and easily resolve the anomalies in B-meson decays. Probes with B_s-B_s mixing, decay into τ^±, dilepton and dijet searches at colliders are also discussed.
- B meson ,
- Z' ,
- gauge symmetry

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Yong Tang and Yue-Liang Wu. Flavor non-universal gauge interactions and anomalies in B-meson decays[J]. Chinese Physics C, 2018, 42(3): 033104. doi: 10.1088/1674-1137/42/3/033104

Yong Tang and Yue-Liang Wu. Flavor non-universal gauge interactions and anomalies in B-meson decays[J]. Chinese Physics C, 2018, 42(3): 033104. doi: 10.1088/1674-1137/42/3/033104 shu

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