Results 41 to 50 of about 117,250 (270)
Simplified models of flavourful leptoquarks
European Physical Journal C: Particles and Fields, 2019 We study the implications of single leptoquark extensions of the Standard Model (SM) under the assumption that their enhanced Yukawa sectors are invariant under global Abelian flavour symmetries already present in SM mass terms.
Ivo de Medeiros Varzielas, Jim Talbert
doaj +1 more source
Generation of SU(3) sum rule for charmed baryon decay
Journal 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
Representations of sl(2,?) in category O and master symmetries [PDF]
, 2015 We show that the indecomposable sl(2,?)-modules in the Bernstein-Gelfand-Gelfand category O naturally arise for homogeneous integrable nonlinear evolution systems. We then develop a new approach called the O scheme to construct master symmetries for such
J. P. Wang, Wang, Jing Ping
core +1 more source
MODULAR SYMMETRY, TWISTED SECTORS AND FLAVOUR [PDF]
String Phenomenology, 2003 4 pages, ws-procs9x6.cls included.
openaire +2 more sources
Flavoured leptogenesis and CPμτ symmetry [PDF]
Journal 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
Flavour from accidental symmetries [PDF]
Journal of High Energy Physics, 2006 We consider a new approach to fermion masses and mixings in which no special "horizontal" dynamics is invoked to account for the hierarchical pattern of charged fermion masses and for the peculiar features of neutrino masses. The hierarchy follows from the vertical, family-independent structure of the model, in particular from the breaking pattern of ...
Ferretti L, King SF, Romanino, Andrea
openaire +4 more sources
Flavour Symmetries and Kahler Operators [PDF]
Journal of High Energy Physics, 2004 Any supersymmetric mechanism to solve the flavour puzzle would generate mixing both in the superpotential Yukawa couplings and in the Kahler potential. In this paper we study, in a model independent way, the impact of the nontrivial structure of the Kahler potential on the physical mixing matrix, after kinetic terms are canonically normalized.
Espinosa, J. R., Ibarra, A.
openaire +2 more sources
Finite family groups for fermionic and leptoquark mixing patterns
Journal of High Energy Physics, 2020 We employ a bottom-up and model-independent technique to search for non-Abelian discrete flavour symmetries capable of predicting viable CKM and PMNS matrices alongside of special patterns of leptoquark couplings.
Jordan Bernigaud +2 more
doaj +1 more source
Symbolic computation of variational symmetries in optimal control [PDF]
, 2006 We use a computer algebra system to compute, in an efficient way, optimal control variational symmetries up to a gauge term. The symmetries are then used to obtain families of Noether's first integrals, possibly in the presence of nonconservative ...
André Gomes-dos-Santos +17 more
core +3 more sources
Flavourful SMEFT likelihood for Higgs and electroweak data
Journal of High Energy Physics, 2020 We perform an updated fit to LHC Higgs data and LEP electroweak precision tests in the framework of the Standard Model Effective Field Theory (SMEFT). We assume a generic structure of the SMEFT operators without imposing any flavour symmetries.
Adam Falkowski, David Straub
doaj +1 more source