scholarly journals Enhancement of the lepton flavor violating Higgs boson decay rates from SUSY loops in the inverse seesaw model

2016 ◽  
Vol 93 (5) ◽  
Author(s):  
E. Arganda ◽  
M. J. Herrero ◽  
X. Marcano ◽  
C. Weiland
Keyword(s):  
Higgs Boson ◽  
Decay Rates ◽  
Lepton Flavor ◽  
Seesaw Model

scholarly journals Imprints of massive inverse seesaw model neutrinos in lepton flavor violating Higgs boson decays

2015 ◽  
Vol 91 (1) ◽  
Author(s):  
E. Arganda ◽  
M. J. Herrero ◽  
X. Marcano ◽  
C. Weiland
Keyword(s):  
Higgs Boson ◽  
Lepton Flavor ◽  
Seesaw Model

scholarly journals Lepton Flavor Violation in Economical 3-3-1 Model with Neutrino Singlets

2019 ◽  
Vol 29 (1) ◽  
pp. 87
Author(s):  
Le Tho Hue ◽  
Dinh Phan Khoi ◽  
Hoang Hanh Phuong ◽  
Ha Thanh Hung
Keyword(s):  
Higgs Boson ◽  
Decay Rates ◽  
Higgs Bosons ◽  
Boson Mass ◽  
Lepton Flavor Violation ◽  
Lepton Flavor ◽  
Flavor Violation ◽  
Charged Higgs ◽  
Charged Leptons ◽  
O 10

Lepton flavor violating (LFV) decays of charged leptons \(\mu\rightarrow e\gamma\)  and SM-like Higgs boson \(h\rightarrow \mu\tau\) are discussed in the framework of the  economical 3-3-1 model  adding three additional singlets neutrinos (E331\(X_R\)). We will show that the appearance of new neutrinos and charged Higgs bosons in this model can result in interesting regions of the parameter space, which satisfy  the recent experimental bound of \(Br(\mu\rightarrow e\gamma)\)  as well as give large \(Br(h\rightarrow \mu\tau)\geq \mathcal{O}(10^{-7})\) . In these regions,  the charged Higgs boson mass lies within the range of \(2-3\) TeV. Our results show that the LFV decays are important channels to distinguish the E331\(X_R\)  and the original economical (E331) models, which predicts suppressed LFV decay rates.

scholarly journals Two-loopO(GF2MH4) corrections to the fermionic decay rates of the Higgs boson

1995 ◽  
Vol 51 (9) ◽  
pp. 5007-5015 ◽  
Author(s):  
Loyal Durand ◽  
Bernd A. Kniehl ◽  
Kurt Riesselmann
Keyword(s):  
Higgs Boson ◽  
Decay Rates

scholarly journals NEUTRINO MASSES, LEPTON FLAVOR MIXING AND LEPTOGENESIS IN THE MINIMAL SEESAW MODEL

2007 ◽  
Vol 16 (01) ◽  
pp. 1-50 ◽  
Author(s):  
WAN-LEI GUO ◽  
ZHI-ZHONG XING ◽  
SHUN ZHOU
Keyword(s):  
Beta Decay ◽  
Neutrino Mass ◽  
Mass Matrix ◽  
Majorana Neutrino ◽  
Double Beta Decay ◽  
Neutrino Mixing ◽  
Lepton Flavor ◽  
Seesaw Model ◽  
Flavor Mixing ◽  
Majorana Neutrinos

We present a review of neutrino phenomenology in the minimal seesaw model (MSM), an economical and intriguing extension of the Standard Model with only two heavy right-handed Majorana neutrinos. Given current neutrino oscillation data, the MSM can predict the neutrino mass spectrum and constrain the effective masses of the tritium beta decay and the neutrinoless double-beta decay. We outline five distinct schemes to parameterize the neutrino Yukawa-coupling matrix of the MSM. The lepton flavor mixing and baryogenesis via leptogenesis are investigated in some detail by taking account of possible texture zeros of the Dirac neutrino mass matrix. We derive an upper bound on the CP-violating asymmetry in the decay of the lighter right-handed Majorana neutrino. The effects of the renormalization-group evolution on the neutrino mixing parameters are analyzed, and the correlation between the CP-violating phenomena at low and high energies is highlighted. We show that the observed matter-antimatter asymmetry of the Universe can naturally be interpreted through the resonant leptogenesis mechanism at the TeV scale. The lepton-flavor-violating rare decays, such as μ→e+γ, are also discussed in the supersymmetric extension of the MSM.

scholarly journals Probes for 4th Generation Constituents of Dark Atoms in Higgs Boson Studies at the LHC

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
M. Yu. Khlopov ◽  
R. M. Shibaev
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Big Bang ◽  
Decay Rates ◽  
Neutral Atoms ◽  
Big Bang Nucleosynthesis ◽  
Charged Species ◽  
The Difference ◽  
The Universe ◽  
Direct Dark Matter

The nonbaryonic dark matter of the Universe can consist of new stable charged species, bound in heavy neutral “atoms” by ordinary Coulomb interaction. StableU-(anti-U)quarks of 4th generation, bound in stable colorless(U- U- U-)clusters, are captured by the primordial helium, produced in Big Bang Nucleosynthesis, thus forming neutral “atoms” of O-helium (OHe), a specific nuclear interacting dark matter that can provide solution for the puzzles of direct dark matter searches. However, the existence of the 4th generation quarks and leptons should influence the production and decay rates of Higgs boson and is ruled out by the experimental results of the Higgs boson searches at the LHC, if the Higgs boson coupling to 4th generation fermions is not suppressed. Here, we argue that the difference between the three known quark-lepton families and the 4th family can naturally lead to suppression of this coupling, relating the accelerator test for such a composite dark matter scenario to the detailed study of the production and modes of decay of the 125.5 GeV boson, discovered at the LHC.

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