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Related papers: Supersymmetric seesaw type II: CERN LHC and lepton…

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The most general supersymmetric seesaw mechanism has too many parameters to be predictive and thus can not be excluded by any measurements of lepton flavour violating (LFV) processes. We focus on the simplest version of the type-I seesaw…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Hirsch , W. Porod , J. C. Romao , J. W. F. Valle , A. Villanova del Moral

The most general supersymmetric seesaw mechanism has too many parameters to be predictive and thus can not be excluded by any measurements of lepton flavour violating (LFV) processes. We focus on the simplest version of the type-I seesaw…

High Energy Physics - Phenomenology · Physics 2008-10-21 A. Villanova del Moral

We reconsider the role that the possible detection of lepton flavour violating (LFV) decays of supersymmetric particles at the Large Hadron Collider (LHC) can play in helping reconstruct the underlying neutrino mass generation mechanism…

High Energy Physics - Phenomenology · Physics 2009-05-06 J. N. Esteves , M. Hirsch , W. Porod , J. C. Romao , J. W. F. Valle , A. Villanova del Moral

In these proceedings we present the results for lepton flavour violating tau and muon decays within the SUSY seesaw scenario. Specifically, we consider the Constrained Minimal Supersymmetric Standard Model extended by three right handed…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Antusch , E. Arganda , M. J. Herrero , A. M. Teixeira

Searches at the LHC of lepton flavour violation (LFV) in slepton decays can indirectly test both type-I and II seesaw mechanisms. Assuming universal flavour-blind boundary conditions, LFV in the neutrino sector is related to LFV in the…

High Energy Physics - Phenomenology · Physics 2015-05-14 Albert Villanova del Moral

In minimal supergravity (mSugra), the neutrino sector is related to the slepton sector by means of the renormalization group equations. This opens a door to indirectly test the neutrino sector via measurements at the LHC. Concretely, for…

High Energy Physics - Phenomenology · Physics 2009-07-22 A. Villanova del Moral

We study the phenomenology of a supersymmetric left-right model, assuming minimal supergravity boundary conditions. Both left-right and (B-L) symmetries are broken at an energy scale close to, but significantly below the GUT scale. Neutrino…

High Energy Physics - Phenomenology · Physics 2011-01-27 J. N. Esteves , M. Hirsch , W. Porod , J. C. Romao , F. Staub , A. Vicente

We summarize the predictions for the radiative decays l_j->l_i \gamma within the context of the supersymmetric type II seesaw mechanism considering universal boundary conditions for the soft SUSY breaking terms. The dependence on the…

High Energy Physics - Phenomenology · Physics 2010-04-15 F. R. Joaquim , Anna Rossi

We review Lepton Flavour Violation (LFV) in the supersymmetric version of the seesaw mechanism (type I, II, III) and in Left-Right models. The LFV needed to explain neutrino masses and mixings is the only source of LFV and has experimental…

High Energy Physics - Phenomenology · Physics 2011-05-30 Jorge C. Romao

We consider a supersymmetric type III seesaw, where the additional heavy states are embedded into complete SU(5) representations to preserve gauge coupling unification. Complying with phenomenological and experimental constraints strongly…

High Energy Physics - Phenomenology · Physics 2015-03-19 A. Abada , A. J. R. Figueiredo , J. C. Romao , A. M. Teixeira

We calculate the predictions for lepton flavour violating (LFV) tau and muon decays, $l_j \to l_i \gamma$, $l_j \to 3 l_i$, $\mu-e$ conversion in nuclei and LFV semileptonic tau decays $\tau \to \mu PP$ with $PP= \pi^+\pi^-, \pi^0\pi^0,…

High Energy Physics - Phenomenology · Physics 2008-10-02 E. Arganda , M. J. Herrero

We present two recent developments on lepton flavour violation in the MSSM. 1) The supersymmetric seesaw mechanism can be realized through the exchange of heavy SU(2)_W-triplet states, rather than `right-handed' neutrinos. In this scenario…

High Energy Physics - Phenomenology · Physics 2007-05-23 Anna Rossi

We address the constraints on the SUSY seesaw parameters arising from Lepton Flavour Violation observables. Working in the Constrained Minimal Supersymmetric Standard Model extended by three right-handed (s)neutrinos, we study the…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. M. Teixeira , S. Antusch , E. Arganda , M. J. Herrero

We study the impact of a type-I SUSY seesaw concerning lepton flavour violation (LFV) at low-energies and at the LHC. At the LHC, $ \chi_2^0\to \tilde \ell \,\ell \to \ell \,\ell\,\chi_1^0$ decays, in combination with other observables,…

High Energy Physics - Phenomenology · Physics 2015-03-03 A. M. Teixeira , A. Abada , A. J. R. Figueiredo , J. C. Romao

We study a supersymmetric version of the seesaw mechanism type-III considering two variants of the model: a minimal version for explaining neutrino data with only two copies of 24-plet superfields and a model with three generations of…

High Energy Physics - Phenomenology · Physics 2013-01-24 Martin Hirsch , Werner Porod , Florian Staub , Christof Weiß

The observation of charged lepton flavour violation would be a smoking gun for new physics and could help in pinpointing the mechanism at the origin of neutrino masses and mixing. We present here our recent studies of lepton flavour…

High Energy Physics - Phenomenology · Physics 2016-05-19 E. Arganda , M. J. Herrero , X. Marcano , C. Weiland

We explore the prospects for searches at the LHC for sparticle decays that violate $\tau$ lepton number, in the light of neutrino oscillation data and the seesaw model for neutrino masses and mixing. We analyse the theoretical and…

High Energy Physics - Phenomenology · Physics 2010-05-12 E. Carquin , J. Ellis , M. E. Gomez , S. Lola , J. Rodriguez-Quintero

We have conceived a supersymmetric Type II seesaw model at TeV scale, which has some additional particles consisting of scalar and fermionic triplet Higgs states, whose masses being around few hundred GeV. In this particular model, we have…

High Energy Physics - Phenomenology · Physics 2015-06-11 R. S. Hundi

We study flavour violation in a supersymmetric SO(10) implementation of the type II seesaw mechanism, which provides a predictive realization of triplet leptogenesis. The experimental upper bounds on lepton flavour violating processes have…

High Energy Physics - Phenomenology · Physics 2010-01-07 Lorenzo Calibbi , Michele Frigerio , Stephane Lavignac , Andrea Romanino

In this study, we investigate the lepton flavor violation (LFV) of Z gauge boson decaying into two different flavor charged leptons $Z\rightarrow l_i l_j$ ($Z\rightarrow \tau \mu$, $Z\rightarrow \tau e$ and $Z\rightarrow \mu e$). This work…

High Energy Physics - Phenomenology · Physics 2026-03-30 Vael Hajahmad , Murhaf Alsayed Ali
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