Quark masses, CKM angles and Lepton Flavour Universality violation
Abstract A properly defined and suitably broken U(2) flavour symmetry leads to successful quantitative relations between quark mass ratios and CKM angles. At the same time the intrinsic distinction introduced by U(2) between the third and the first two families of quarks and leptons may support anom...
Main Authors: | , |
---|---|
Format: | Article |
Language: | English |
Published: |
SpringerOpen
2019-07-01
|
Series: | Journal of High Energy Physics |
Subjects: | |
Online Access: | http://link.springer.com/article/10.1007/JHEP07(2019)023 |
id |
doaj-20d3bffbdf034f38ba95484b60fc3240 |
---|---|
record_format |
Article |
spelling |
doaj-20d3bffbdf034f38ba95484b60fc32402020-11-25T03:51:26ZengSpringerOpenJournal of High Energy Physics1029-84792019-07-012019712010.1007/JHEP07(2019)023Quark masses, CKM angles and Lepton Flavour Universality violationRiccardo Barbieri0Robert Ziegler1Scuola Normale SuperioreCERN, Theoretical Physics DepartmentAbstract A properly defined and suitably broken U(2) flavour symmetry leads to successful quantitative relations between quark mass ratios and CKM angles. At the same time the intrinsic distinction introduced by U(2) between the third and the first two families of quarks and leptons may support anomalies in charged and neutral current semi-leptonic B-decays of the kind tentatively observed in current flavour experiments. We show how this is possible by the exchange of the (3, 1)2/3 vector leptoquark in two U(2)-models with significantly different values of Lepton Flavour Universality violation, observable in foreseen experiments.http://link.springer.com/article/10.1007/JHEP07(2019)023Beyond Standard ModelQuark Masses and SM Parameters |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Riccardo Barbieri Robert Ziegler |
spellingShingle |
Riccardo Barbieri Robert Ziegler Quark masses, CKM angles and Lepton Flavour Universality violation Journal of High Energy Physics Beyond Standard Model Quark Masses and SM Parameters |
author_facet |
Riccardo Barbieri Robert Ziegler |
author_sort |
Riccardo Barbieri |
title |
Quark masses, CKM angles and Lepton Flavour Universality violation |
title_short |
Quark masses, CKM angles and Lepton Flavour Universality violation |
title_full |
Quark masses, CKM angles and Lepton Flavour Universality violation |
title_fullStr |
Quark masses, CKM angles and Lepton Flavour Universality violation |
title_full_unstemmed |
Quark masses, CKM angles and Lepton Flavour Universality violation |
title_sort |
quark masses, ckm angles and lepton flavour universality violation |
publisher |
SpringerOpen |
series |
Journal of High Energy Physics |
issn |
1029-8479 |
publishDate |
2019-07-01 |
description |
Abstract A properly defined and suitably broken U(2) flavour symmetry leads to successful quantitative relations between quark mass ratios and CKM angles. At the same time the intrinsic distinction introduced by U(2) between the third and the first two families of quarks and leptons may support anomalies in charged and neutral current semi-leptonic B-decays of the kind tentatively observed in current flavour experiments. We show how this is possible by the exchange of the (3, 1)2/3 vector leptoquark in two U(2)-models with significantly different values of Lepton Flavour Universality violation, observable in foreseen experiments. |
topic |
Beyond Standard Model Quark Masses and SM Parameters |
url |
http://link.springer.com/article/10.1007/JHEP07(2019)023 |
work_keys_str_mv |
AT riccardobarbieri quarkmassesckmanglesandleptonflavouruniversalityviolation AT robertziegler quarkmassesckmanglesandleptonflavouruniversalityviolation |
_version_ |
1724487812652204032 |