We analyze CP violation in supersymmetry with Effective Minimal Flavour Violation, as recently proposed in arXiv:1011.0730. Unlike the case of standard Minimal Flavour Violation, we show that all the phases allowed by the flavour symmetry can be sizable without violating existing Electric Dipole Moment constraints, thus solving the SUSY CP problem. The EDMs at one and two loops are precisely analyzed as well as their correlations with the expected CP asymmetries in B physics.
We present a first update on the constraints on general MSSM scenarios with non-minimal sources of flavour violation (NMFV). Using the public code SuperIso, we present an up-to-date computation of the relevant Wilson coefficients related to $b\to s ll$ transitions which manifest tensions with the SM predictions. We present benchmark scenarios compatible with the most recent fits to the Wilson coefficients. We finally discuss the possibility for such scenarios to completely explain the recent flavour anomalies.
Two-Higgs-doublet models with Minimal Flavour Violation
在两个希格斯偶极子模型中的树级味道变化中性电流可以通过保护味道或味道盲对称性的破坏来抑制，但只有第一个选择，通过应用最小味道违反假设来实现，在量子校正下是稳定的。此外，一个富含味盲相的具有最小味破坏的双Higgs二重态模型可以解释最近在Delta F = 2跃迁中发现的异常现象，即B_s混合中的CP破坏相以及S_s_K和S_s_K之间的张力。
Flavour physics, supersymmetry and grand unification
夸克味物理数据的整体拟合不支持标准模型，标准偏差为3.6，并指出介子-反介子混合振幅中新的CP破坏物理。Tevatron数据要求一个新的Bs-Bs-bar混合阶段，Bd-Bd-bar混合中的新物理学阐明了由B（B-> tau nu）驱动的幺正三角形上的张力。在超对称GUT模型中，大的大气中微子混合角会影响b -> s跃迁.我提出了一个SO（10）GUT模型，它容纳了大的Bs-Bs-bar混合相，同时遵守所有其他的实验约束的最新分析结果。
In recent years, significant experimental indications that point towards Lepton Flavour Universality violating effects in B-decays, involving $b \to c τν$ and $b \to s \ell^+ \ell^-$ have been accumulated. A possible New Physics explanation can be sought within the framework of R-parity violating Supersymmetry, which contains the necessary ingredients to explain the anomalies via both leptoquark, tree-level exchange and one-loop diagrams involving purely leptonic interactions. In addition, an approximate $U(2)^2$ flavour symmetry, that respects gauge coupling unification, successfully controls…
If observed, charged lepton flavour violation is a clear sign of new physics - beyond the Standard Model minimally extended to accommodate neutrino oscillation data. We briefly review several extensions of the Standard Model which could potentially give rise to observable signals, also emphasising the rôle of charged lepton flavour violation in probing such new physics models.
These lecture notes provide an introduction to the theoretical concepts of flavour physics and CP violation, based on a series of lectures given at the ESHEP 2016 summer school. In the first lecture we review the basics of flavour and CP violation in the Standard Model. The second lecture is dedicated to the phenomenology of K and B meson decays, where we focus on a few representative observables. In the third lecture we give an introduction to flavour physics beyond the Standard Model, both within the framework of Minimal Flavour Violation and beyond.
Combining Pati-Salam (PS) and flavour symmetries in a renormalisable setup, we devise a scenario which produces realistic masses for the charged leptons. Flavour-symmetry breaking scalar fields in the adjoint representations of the PS gauge group are responsible for generating different flavour structures for up- and down-type quarks as well as for leptons. The model is characterised by new heavy fermions which mix with the Standard Model quarks and leptons. In particular, the partners for the third fermion generation induce sizeable sources of flavour violation. Focusing on the charged-lepton…
If observed, charged lepton flavour violation is a clear sign of new physics - beyond the Standard Model minimally extended to accommodate neutrino oscillation data. After a brief review of several charged lepton flavour violation observables and their current experimental status, we consider distinct extensions of the Standard Model which could potentially give rise to observable signals, focusing on the case of models in which the mechanism of neutrino mass generation is the common source of neutral and charged lepton flavour violation.
This note is a concise theoretical summary of the first session on new physics searches at the high-intensity frontier of the IFAE2017 Conference. Recent theoretical developments related to muonic lepton-flavour violation and $g-2$ are reviewed.
These notes represent a summary of three lectures on flavour and CP violation, given at the CERNs European School of High Energy Physics in 2014. They cover flavour physics within the standard model, phenomenology of CP violation in meson mixing and decays, as well as constraints of flavour observableson physics beyond the standard model. In preparing the lectures (and consequently this summary) I drew heavily from several existing excellent and exhaustive sets of lecture notes and reviews on flavour physics and CP violation [1]. The reader is encouraged to consult those as well as the origina…
我们回顾了标准模型中的味物理和CP破坏的主要方面。在介绍了包括弱衰变主公式在内的该领域的宏观观点之后，我们讨论了i）幺正三角形的标准分析，ii）比率ε '/ε'，iii）稀有衰变K^+ -> pi^+ nu barnu和K_L -> pi ^0 nu barnu，iv）B衰变中的CP破坏和v）具有最小味破坏的模型。我们的评论以20个问题结束，希望在未来几年内得到回答。
