Symmetries and Anomalies in Flavour Physics

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 1675

Special Issue Editors


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Guest Editor
STFC, Rutherford Appleton Laboratory, Didcot, UK
Interests: flavor physics; neutrinos; B-physics

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Guest Editor
Department of Physics, University of Warwick, Coventry CV4 7AL, UK
Interests: experimental particle

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Guest Editor
Theoretical Physics Department, CERN, CH-1211 Geneva 23, Switzerland
Interests: flavor physics

Special Issue Information

Dear Colleagues,

Flavour physics symmetries provide powerful tools to access new physics beyond the Standard Model. During the past decade, some measurements of B mesons decays have challenged lepton flavour universality (an accidental symmetry of the Standard Model), attracting significant attention as a result. A consistent pattern of anomalies seemed to emerge in neutral–current interactions, which could be explained in models with lepto-quarks or new neutral gauge-bosons. In addition, in charge–current interactions, semileptonic B decays involving τ leptons in the final state favoured larger rates than those that assume lepton flavour universality.

The field has seen quite a dramatic turn recently. New experimental results have been published that are in surprisingly good agreement with the Standard Model, supporting lepton flavour universality. However, tensions continue to exist, which have profound implications for model building and for the discovery potential of current and future experiments.

This Special Issue aims to provide an updated picture of the flavour landscape. We are seeking contributions on the status of flavour anomalies, from an experimental and a theoretical point of view.

Dr. Stefania Ricciardi
Dr. Thomas Blake
Dr. Farvah Nazila Mahmoudi
Guest Editors

Manuscript Submission Information

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Keywords

  • flavor physics
  • physics beyond the standard model
  • anomalies
  • lepton flavor universality
  • lepto-quarks
  • Z’

Published Papers (2 papers)

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Review

19 pages, 3756 KiB  
Review
Charged Lepton-Flavour Violation
by Giulia Frau and Christoph Langenbruch
Symmetry 2024, 16(3), 359; https://doi.org/10.3390/sym16030359 - 16 Mar 2024
Viewed by 562
Abstract
We review the experimental status of searches for lepton-flavour violation in the charged sector. We give an overview of searches for lepton-flavour violation in purely leptonic decays, hadron decays, and decays of heavy bosons. We focus on the most stringent constraints on lepton-flavour [...] Read more.
We review the experimental status of searches for lepton-flavour violation in the charged sector. We give an overview of searches for lepton-flavour violation in purely leptonic decays, hadron decays, and decays of heavy bosons. We focus on the most stringent constraints on lepton-flavour violating processes in these areas and give prospects for ongoing and future experiments. Full article
(This article belongs to the Special Issue Symmetries and Anomalies in Flavour Physics)
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21 pages, 895 KiB  
Review
Analysis of B(s)0μ+μ Decays at the Large Hadron Collider
by Kai-Feng Chen, Titus Mombächer and Umberto De Sanctis
Symmetry 2024, 16(2), 251; https://doi.org/10.3390/sym16020251 - 18 Feb 2024
Viewed by 627
Abstract
This article reviews the most recent measurements of B(s)0μ+μ decay properties at the Large Hadron Collider (LHC) which are the most precise to date. The measurements of the branching fraction and effective lifetime of [...] Read more.
This article reviews the most recent measurements of B(s)0μ+μ decay properties at the Large Hadron Collider (LHC) which are the most precise to date. The measurements of the branching fraction and effective lifetime of the Bs0μ+μ decay by the ATLAS, CMS, and LHCb collaborations, as well as the search for B0μ+μ decays, are summarized with a focus on the experimental challenges. Furthermore, prospects are given for these measurements and new observables that become accessible with the foreseen amounts of data by the end of the LHC. Full article
(This article belongs to the Special Issue Symmetries and Anomalies in Flavour Physics)
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