B anomalies under the lens of electroweak precision

被引：19

作者：

Alasfar, Lina ^{[1
]}

Azatov, Aleksandr ^{[2
,3
]}

de Blas, Jorge ^{[4
]}

Paul, Ayan ^{[1
,5
]}

Valli, Mauro ^{[6
]}

机构：

[1] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[2] SISSA Int Sch Adv Studies, Via Bonomea 265, I-34136 Trieste, Italy

[3] Ist Nazl Fis Nucl, Sez Trieste, Via Bonomea 265, I-34136 Trieste, Italy

[4] Univ Durham, Inst Particle Phys Phenomenol, Durham DH1 3LE, England

[5] DESY, Notkestr 85, D-22607 Hamburg, Germany

[6] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2020年 / 2020卷 / 12期

基金：

英国科学技术设施理事会;

关键词：

Beyond Standard Model; Heavy Quark Physics; Higgs Physics; DECAY B-0; PHYSICS; VIOLATION; K-ASTERISK(0)MU(+)MU(-); LEPTOQUARKS; COLLISIONS; NUMBER; MODEL;

D O I：

10.1007/JHEP12(2020)016

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：

The measurements carried out at LEP and SLC projected us into the precision era of electroweak physics. This has also been relevant in the theoretical interpretation of LHCb and Belle measurements of rare B semileptonic decays, paving the road for new physics with the inference of lepton universality violation in RK( *) ratios. The simplest explanation of these flavour anomalies - sizeable one-loop contributions respecting Minimal Flavour Violation - is currently disfavoured by electroweak precision data. In this work, we discuss how to completely relieve the present tension between electroweak constraints and one-loop minimal flavour violating solutions to RK( *). We determine the correlations in the Standard Model Effective Field Theory that highlight the existence of such a possibility. Then, we consider minimal extensions of the Standard Model where our effective-field-theory picture can be realized. We discuss how these solutions to b -> s`` anomalies, respecting electroweak precision and without any new source of flavour violation, may point to the existence of a Z0 boson at around the TeV scale, within the discovery potential of LHC, or to leptoquark scenarios.

引用

页数：37

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