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Electric dipole moments and charged-lepton flavour-violating processes are extremely sensitive probes for new physics, complementary to direct searches as well as flavour-changing processes in the quark sector. Beyond the "smoking-gun"…

High Energy Physics - Phenomenology · Physics 2016-11-03 Martin Jung

Since its inception, no decisive departure from the predictions of Standard Model (SM) has been reported. But recently various experiments have observed few hints of possible departure from SM predictions in lepton flavor universality…

High Energy Physics - Phenomenology · Physics 2019-09-06 Lobsang Dhargyal

We investigate the viability of extending the Standard Model with $S_1$ and $S_3$ scalar leptoquarks when the flavour structure is parametrized in terms of Froggatt-Nielsen charges. In contrast to a similar analysis with a vector…

High Energy Physics - Phenomenology · Physics 2021-03-17 Marzia Bordone , Oscar Cata , Thorsten Feldmann , Rusa Mandal

If electroweak symmetry breaking arises via strongly-coupled physics, the observed suppression of flavour-changing processes suggests that fermion masses should arise via mixing of elementary fermions with composite fermions of the strong…

High Energy Physics - Phenomenology · Physics 2010-02-17 Ben Gripaios

We propose a new gauged $B-L$ extension of the standard model where light neutrinos are of Dirac type, naturally acquiring sub-eV mass after electroweak symmetry breaking, without any additional global symmetries. This is realised by…

High Energy Physics - Phenomenology · Physics 2020-07-15 Dibyendu Nanda , Debasish Borah

The observed flavor oscillations of solar and atmospheric neutrinos determine several elements of the leptonic mixing matrix, but leave open the small mixing angle Theta_13, a possible CP-violating phase, the mass ordering, the absolute…

Astrophysics · Physics 2017-08-23 G. G. Raffelt

The past leaves the surprising experimental successes of the simple constituent quark model to be expained by QCD. Surprising agreement with experiment from simple Sakharov-Zeldovich model (1966) having quarks with effective masses and…

High Energy Physics - Phenomenology · Physics 2017-08-23 Harry J. Lipkin

We study the dynamics of color fields as generated by simple configurations of relativistic particles with Abelian and non-Abelian (SU(2)) charges in the classical limit. We find that chromodynamic (non-Abelian) systems generally show…

We systematically construct realistic mass matrices for the type-I seesaw mechanism out of more than 20 trillion possibilities. We use only very generic assumptions from extended quark-lepton complementarity, i.e., the leptonic mixing…

High Energy Physics - Phenomenology · Physics 2008-11-26 Florian Plentinger , Gerhart Seidl , Walter Winter

We propose a predictive radiative seesaw model at one-loop level with a flavor dependent gauge symmetry $U(1)_{xB_3-xe-\mu+\tau}$ and Majorana fermion dark matter. For the neutrino mass matrix, we obtain an $A_1$ type texture (with two…

High Energy Physics - Phenomenology · Physics 2017-08-23 P. Ko , Takaaki Nomura , Hiroshi Okada

In this note I mainly focus on the neutrino physics part in my talk and report the most recent progress made in \cite{YLW0}. It is seen that the Majorana features of neutrinos and SO(3) gauge flavor symmetry can simultaneously explain the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yue-Liang Wu

Chiral Color is extended by incorporating Technicolor, which induces dynamical breaking of the Electroweak symmetry as well as Chiral Color to Quantum Chromodynamics. Gauge anomalies are cancelled by introducing two generations of…

High Energy Physics - Phenomenology · Physics 2012-04-05 Thomas W. Kephart , HoSeong La

We present a unification model based on the well-known but mysterious cubic-structure grouping of quarks and leptons that suggests an underlying symmetry connection deemed explainable by a unified theory. It results in an extension of the…

High Energy Physics - Phenomenology · Physics 2023-03-13 Mohammad Mehrafarin

We show that a simple extension of the Standard Model involving the introduction of vector-like quarks and heavy neutrinos, provides an explanation of the so called B-anomalies in $b\to s\ell\bar\ell$ transitions. Vector-like quarks can…

High Energy Physics - Phenomenology · Physics 2017-12-14 Francisco J. Botella , Gustavo C. Branco , Miguel Nebot

We have studied the correlations among the three absolute neutrino mass observables - the effective Majorana mass ($m_{ee}$) which can be obtained from neutrinoless double beta decay, the electron neutrino mass ($m_{\beta}$) which is…

High Energy Physics - Phenomenology · Physics 2021-03-31 Srubabati Goswami , Vishnudath K N

The dipole moments of the leptons and quarks are matrices in flavor space, which can potentially reveal as much about the flavor structure of the theory as do the mass matrices. The off-diagonal elements of the dipole matrices lead to…

High Energy Physics - Phenomenology · Physics 2014-11-17 K. S. Babu , S. M. Barr , Ilja Dorsner

Grand unified theories with fermions transforming as irreducible representations of a discrete nonabelian flavor symmetry can lead to realistic fermion masses, without requiring very small fundamental parameters. We construct a specific…

High Energy Physics - Phenomenology · Physics 2013-11-13 David B. Kaplan , Martin Schmaltz

We study theoretical and experimental constraints on electroweak theories including a new color-singlet and electrically-neutral gauge boson. We first note that the electric charges of the observed fermions imply that any such Z' boson may…

High Energy Physics - Phenomenology · Physics 2009-11-07 Thomas Appelquist , Bogdan A. Dobrescu , Adam R. Hopper

The aim of present work is to consider in more details recently theoretically observed exotic "color charge glow" effect and possible physical effects related to ensembles of color charged particles on the classical level. We study ways of…

High Energy Physics - Phenomenology · Physics 2017-12-14 Anton Zadora

The Randall-Sundrum model with gauge fields and fermions in the bulk has several attractive features including the gauge coupling unification, a candidate for the dark matter, and an explanation for the hierarchical Yukawa couplings. In…

High Energy Physics - Phenomenology · Physics 2007-05-25 Hiroto Nakajima
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