B meson anomalies and large B+→ K+ ν(ν)over-bar in non-universal U(1)' models

被引：0
|
作者：
Athron, Peter [1 ,2 ]
Martinez, R. [3 ]
Sierra, Cristian [1 ,2 ]
机构：
[1] Nanjing Normal Univ, Dept Phys, Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China
[2] Nanjing Normal Univ, Inst Theoret Phys, Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China
[3] Univ Nacl Colombia, Dept Fis, K 45 26-85, Bogota, DC, Colombia
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2024年 / 02期
基金：
中国国家自然科学基金;
关键词：
Semi-Leptonic Decays; New Gauge Interactions; Specific BSM Phenomenology; Lepton Flavour Violation (charged); PHYSICS; HEAVY;
D O I：
10.1007/JHEP02(2024)121
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
In view of both the latest LHCb measurement of R-K(*) and the new 2.7 sigma deviation reported by Belle II on B+ -> K+nu(nu) over bar decays, we present a fit to the B meson anomalies for various one and two dimensional hypothesis including complex Wilson coefficients. We show in a model-independent way that the generic non-universal U(1)' extensions of the SM, without flavour violation, fail to simultaneously fit those observables and corroborate that, they can modify BR(B+-> K+nu(nu) over bar )up to only a 10%. In view of this deficit, we propose a new way in which those models can accommodate the data at tree level by introducing lepton flavour violating couplings and non-diagonal elements of the charged lepton mixing matrix, with implications in future charged lepton flavour violation searches.
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页数：17
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