期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 11, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP11(2017)044
关键词
Beyond Standard Model; Heavy Quark Physics
资金
- Swiss National Science Foundation (SNF) [200021-159720]
- Swiss National Science Foundation (SNF) [200021-159720]
- Swiss National Science Foundation (SNF) [200021_159720] Funding Source: Swiss National Science Foundation (SNF)
Motivated by additional experimental hints of Lepton Flavour Universality violation in B decays, both in charged-and in neutral-current processes, we analyse the ingredients necessary to provide a combined description of these phenomena. By means of an Effective Field Theory (EFT) approach, based on the hypothesis of New Physics coupled predominantly to the third generation of left-handed quarks and leptons, we show how this is possible. We demonstrate, in particular, how to solve the problems posed by electroweak precision tests and direct searches with a rather natural choice of model parameters, within the context of a U(2)(q) x U(2)(l) flavour symmetry. We further exemplify the general EFT findings by means of simplified models with explicit mediators in the TeV range: coloured scalar or vector leptoquarks and colour-less vectors. Among these, the case of an SU(2)(L) -singlet vector leptoquark emerges as a particularly simple and successful framework.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据