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We present a new parametrization of the minimal seesaw model, expressing the heavy-singlet neutrino Dirac Yukawa couplings $(Y_\nu)_{ij}$ and Majorana masses $M_{N_i}$ in terms of effective light-neutrino observables and an auxiliary…

高能物理 - 唯象学 · 物理学 2009-09-11 John Ellis , Junji Hisano , Martti Raidal , Yasuhiro Shimizu

$U(1)_X$SSM is the extension of the minimal supersymmetric standard model(MSSM) and its local gauge group is $SU(3)_C\times SU(2)_L \times U(1)_Y \times U(1)_X$. To obtain this model, three singlet new Higgs superfields and right-handed…

高能物理 - 唯象学 · 物理学 2022-05-11 Tong-Tong Wang , Shu-Min Zhao , Xing-Xing Dong , Lu-Hao Su , Ze-Ning Zhang , Wei Li , Tai-Fu Feng

We study the impact of neutrino masses and mixings on LFV processes within the context of the supersymmetric seesaw scenario, where the CMSSM is extended by three right-handed (s)neutrinos. A hierarchical spectrum is considered for both…

高能物理 - 唯象学 · 物理学 2009-11-11 S. Antusch , E. Arganda , M. J. Herrero , A. M. Teixeira

We study charged lepton flavour violation in a scenario in which light neutrino masses are generated via the inverse seesaw mechanism with 3+3 gauge singlet fermions, Ni and Sj, i,j=1,2,3. Lepton mixing is predicted with the help of the…

高能物理 - 唯象学 · 物理学 2025-07-18 F. P. Di Meglio , C. Hagedorn

We review and update the current phenomenological constraints on minimal type I seesaw extensions of the Standard Model in which New Physics content can be probed at the electroweak scale. In this class of models, the flavour structure of…

高能物理 - 唯象学 · 物理学 2013-03-26 Emiliano Molinaro

The simplest realization of the inverse seesaw mechanism in a $SU(3)_C \otimes SU(3)_L \otimes U(1)_X$ gauge theory offers striking flavor correlations between rare charged lepton flavor violating decays and the measured neutrino…

高能物理 - 唯象学 · 物理学 2015-09-16 Sofiane M. Boucenna , Jose W. F. Valle , Avelino Vicente

We study the effects of lepton flavour violation (LFV) on the production processes e+e- --> \chi+_i \chi-_j at a linear collider with longitudinal e+ and e- beam polarizations. In the case of LFV the sneutrino mass eigenstates have no…

高能物理 - 唯象学 · 物理学 2009-11-13 Karl Hohenwarter-Sodek , Thomas Kernreiter

We study lepton flavour violating decays of neutralinos and sleptons within the Minimal Supersymmetric Standard Model, assuming two and three generation mixings in the slepton sector. We take into account the most recent bounds on flavour…

高能物理 - 唯象学 · 物理学 2009-01-07 A. Bartl , K. Hidaka , K. Hohenwarter-Sodek , T. Kernreiter , W. Majerotto , W. Porod

A recent LHCb measurement of the ratio $R_{K^*}$ of $B\to K^*\mu\bar\mu$ to $B\to K^*e\bar e$ branching fractions has produced results in mild tension with the standard model (SM). This adds to the known anomalies also induced by the $b\to…

高能物理 - 唯象学 · 物理学 2018-02-23 Cheng-Wei Chiang , Xiao-Gang He , Jusak Tandean , Xing-Bo Yuan

We analyze lepton flavour violation (LFV), as well as generation of the observed baryon-antibaryon asymmetry of the Universe (BAU) within a generalized minimal lepton flavour violation (MLFV) framework where we allow for CP violation both…

高能物理 - 唯象学 · 物理学 2010-10-27 Gustavo C. Branco , Andrzej J. Buras , Sebastian Jager , Selma Uhlig , Andreas Weiler

A widely adopted theoretical scheme to account for the neutrino oscillation phenomena is the see-saw mechanism together with the ``lopsided'' mass matrices, which is generally realized in the framework of supersymmetric grand unification.…

高能物理 - 唯象学 · 物理学 2014-11-17 Xiao-Jun Bi

In the work presented here, we have studied the impact of right handed neutrinos, which are introduced to account for the evidence of neutrino masses, on charged lepton flavour violating observables. In particular, we have focused on the…

高能物理 - 唯象学 · 物理学 2017-05-02 V. De Romeri , M. J. Herrero , X. Marcano , F. Scarcella

We present and discuss constraints on supersymmetric type I seesaw models imposed by neutrino data, charged lepton flavor violation and thermal leptogenesis.

高能物理 - 唯象学 · 物理学 2007-05-23 S. Albino , F. Deppisch , R. Rückl

We investigate the prospects for detection of lepton flavour violation in sparticle production and decays at a Linear Collider (LC), in models guided by neutrino oscillation data. We consider both slepton pair production and sleptons…

高能物理 - 唯象学 · 物理学 2015-05-28 E. Carquin , J. Ellis , M. E. Gomez , S. Lola

We have studied neutrinoless double beta decay and charged lepton flavour violation in broken $\mu-\tau$ symmetric neutrino masses in a generic left-right symmetric model (LRSM). The leading order $\mu-\tau$ symmetric mass matrix originates…

高能物理 - 唯象学 · 物理学 2017-08-02 Happy Borgohain , Mrinal Kumar Das

We study Lepton Flavour Violating hadron decays of the tau lepton within the Simplest Little Higgs model. Namely we consider $\tau \rightarrow \mu (P, V, PP)$ where $P$ and $V$ are short for a pseudoscalar and a vector meson. We find that,…

高能物理 - 唯象学 · 物理学 2016-04-25 A. Lami , J. Portoles , P. Roig

The Minimal Lepton Flavour Violation (MLFV) framework is discussed after the recent indication for CP violation in the leptonic sector. Among the three distinct versions of MLFV, the one with degenerate right-handed neutrinos will be…

高能物理 - 唯象学 · 物理学 2017-09-13 D. N. Dinh , L. Merlo , S. T. Petcov , R. Vega-Alvarez

Given its briefness and predictability, the minimal seesaw -- a simplified version of the canonical seesaw mechanism with only two right-handed neutrino fields -- has been studied in depth and from many perspectives, and now it is being…

高能物理 - 唯象学 · 物理学 2021-05-10 Zhi-zhong Xing , Zhen-hua Zhao

We study the implications of the global $U(1)_R$ symmetry present in minimal lepton flavor violating implementations of the seesaw mechanism for neutrino masses. Our discussion is done in the context of explicit minimal type-I seesaw…

高能物理 - 唯象学 · 物理学 2012-09-14 Audrey Degée

We study two- and three-body lepton flavor violating (LFV) decays involving leptons and neutral vector bosons $V=\rho^0, \omega, \phi, J/\psi, \Upsilon, Z^0$, as well as pseudo-scalar $P=\pi^0, \eta, \eta', \eta_c$ and scalar $S=f_0(500),…

高能物理 - 唯象学 · 物理学 2019-02-18 Claudio O. Dib , Thomas Gutsche , Sergey G. Kovalenko , Valery E. Lyubovitskij , Ivan Schmidt