Results 31 to 40 of about 20,379 (180)

Flavoured leptogenesis and CPμτ symmetry [PDF]

open access: yesJournal of High Energy Physics, 2020
Abstract We present a systematic study of leptogenesis in neutrino mass models with μτ-flavoured CP symmetry. In addition to the strong hierarchical N1-dominated scenario (N 1DS) in the ‘two flavour regime’ of leptogenesis, we show that one may choose the right-handed (RH) neutrino mass hierarchy as mild as M
Samanta, Rome, Sen, Manibrata
openaire   +2 more sources

Lepton flavour violation and flavour symmetries [PDF]

open access: yesFortschritte der Physik, 2012
AbstractIn this review article, we highlight the impact of models incorporating flavour symmetries on charged lepton flavour violating (LFV) processes. Flavour symmetries provide a natural approach to explain the peculiar mass hierarchies and mixing patterns of the Standard Model fermions.
openaire   +3 more sources

Leptogenesis and residual CP symmetry [PDF]

open access: yes, 2016
We discuss flavour dependent leptogenesis in the framework of lepton flavour models based on discrete flavour and CP symmetries applied to the type-I seesaw model. Working in the flavour basis, we analyse the case of two general residual CP symmetries in
Chen, Peng   +2 more
core   +1 more source

Weak decays of antitriplet charmed baryons from the perspective of flavor symmetry

open access: yesJournal of High Energy Physics, 2023
In this work, we carry out a global fit for the two-body weak decays of antitriplet charmed baryons in both SU(3) respected and broken scenarios incorporating all the available data up to date. In the SU(3) irreducible representation approach (IRA), more
Huiling Zhong   +3 more
doaj   +1 more source

Breaking flavour symmetry spontaneously [PDF]

open access: yesPhysics Letters B, 1997
Major revisions in text, 12 pages, RevTeX, 5 ...
openaire   +2 more sources

THE FLAVOUR PROBLEM AND FAMILY SYMMETRY [PDF]

open access: yesString Phenomenology 2003, 2004
We show how two different family symmetries can be used to address the flavour problem in SO(10)-like models. The first is based on a gauged $U(1)_F$, whose problems dissappear in the context of a type I string model embedding. The second is based on $SU(3)_F$, the maximal family group consistent with SO(10); in this case the family symmetry is more ...
King, S.F., Peddie, I.N.R
openaire   +2 more sources

Modular A5 symmetry for flavour model building [PDF]

open access: yesJournal of High Energy Physics, 2019
Abstract In the framework of the modular symmetry approach to lepton flavour, we consider a class of theories where matter superfields transform in representations of the finite modular group Γ5 ≃ A 5. We explicitly construct a basis for the 11 modular forms of weight 2 and level 5.
P. P. Novichkov   +3 more
openaire   +6 more sources

A Rationale for Long-lived Quarks and Leptons at the LHC: Low Energy Flavour Theory [PDF]

open access: yes, 2011
In the framework of gauged flavour symmetries, new fermions in parity symmetric representations of the standard model are generically needed for the compensation of mixed anomalies.
C Froggatt   +22 more
core   +2 more sources

Generation of SU(3) sum rule for charmed baryon decay

open access: yesJournal of High Energy Physics, 2022
Flavor SU(3) symmetry is a powerful tool to analyze charmed baryon decays. In this work, we propose an approach to generate SU(3) sum rules for the singly and doubly charmed baryon decays without writing the Wigner-Eckhart invariants explicitly. The SU(3)
Di Wang
doaj   +1 more source

The interplay between grand unified and flavour symmetries in a Pati-Salam x S4 model [PDF]

open access: yes, 2010
Both discrete flavour symmetries and Grand Unified symmetries explain apparent structures in the mass sector of the Standard Model. A model that combines both symmetries is therefore very appealing.
Altarelli G, Reinier De Adelhart Toorop
core   +2 more sources

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