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Understanding the origin of lepton number violation is one of the fundamental questions in particle physics today. Neutrinoless double beta decay provides a way in which this violation can be tested. In this article, we derive the form of…

High Energy Physics - Phenomenology · Physics 2021-10-19 Jenni Kotila , Jacopo Ferretti , Francesco Iachello

We survey 129 lepton number violating effective operators, consistent with the minimal Standard Model gauge group and particle content, of mass dimension up to and including eleven. Upon requiring that each one radiatively generates the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Andre de Gouvea , James Jenkins

We investigate the prospects for observing lepton number violation (LNV) by two units, $|\Delta L| = 2$, at the LHC within the leptoquark variant of the Zee Model, where Majorana neutrino masses arise radiatively at one-loop. The model…

High Energy Physics - Phenomenology · Physics 2025-12-30 K. S. Babu , Rahool Kumar Barman , Dorival Gonçalves

Left-right symmetric models (LRSM) were proposed to reconcile the apparent parity violation in weak interactions with our intrinsic notion of fundamental parity symmetry. It was quickly realized that LRSM offers a viable framework for…

High Energy Physics - Phenomenology · Physics 2024-03-04 Kevin A. Urquía-Calderón

We summarize the potential charged lepton flavor violation (LFV) from neutrino mass relevant models, for instance the seesaw mechanisms. In particular, we study, in a model-dependent way, the LFV signals at the high-energy hadron and lepton…

High Energy Physics - Phenomenology · Physics 2022-03-17 Yongchao Zhang

We did a model independent phenomenological study of baryogenesis via leptogenesis, neutrinoless double beta decay (NDBD) and charged lepton flavour violation (CLFV) in a generic left-right symmetric model (LRSM) where neutrino mass…

High Energy Physics - Phenomenology · Physics 2017-10-25 Happy Borgohain , Mrinal Kumar Das

Collisional heavy ion double charge exchange (DCE) reactions, induced by second order nucleon-nucleon interactions, are shown to provide access to the two-body transition densities of the complementary DCE transitions in the interacting…

Nuclear Theory · Physics 2025-06-02 Jessica I. Bellone , Maria Colonna , Danilo Gambacurta , Horst Lenske

Observation of lepton number ($L$) violation by two units at colliders would provide evidence for the Majorana nature of neutrinos. We study signals of $L$-violation in the context of two popular models of neutrino masses, the type-II…

High Energy Physics - Phenomenology · Physics 2022-12-16 K. S. Babu , Rahool Kumar Barman , Dorival Gonçalves , Ahmed Ismail

Tests of Lorentz and CPT violation in the medium baseline reactor antineutrino experiment are presented in the framework of the Standard Model Extension (SME). Both the spectral distortion and sidereal variation are employed to derive the…

High Energy Physics - Phenomenology · Physics 2015-01-07 Yu-Feng Li , Zhen-hua Zhao

A new model, based on the BCS approach, is specially designed to describe nuclear phenomena $(A,Z)\rightarrow (A,Z\pm 2)$ of double-charge exchange (DCE). After being proposed, and applied in the particle-hole limit, by one of the authors…

Nuclear Theory · Physics 2020-04-29 V. dos S. Ferreira , A. R. Samana , F. Krmpotić , M. Chiapparini

We investigate the reaction e,e->mu, nu, q, q as a possible place to test the lepton number violating interactions of singly charged scalars (Delta(L)) belonging to a SU(2)L triplet. The existence of such scalars is predicted by some…

High Energy Physics - Phenomenology · Physics 2009-10-31 Jukka Maalampi , Nikolai Romanenko

The ($^{11}$B,$^{11}$Li) double charge-exchange reaction (DCER) at $E(^{11}$B)/$A$=80 MeV was measured for the first time to demonstrate the feasibility of the reaction for studying neutrino nuclear responses for double beta decays (DBD).…

Nuclear Experiment · Physics 2017-03-27 K. Takahisa , H. Ejiri , H. Akimune , H. Fujita , R. Matumiya , T. Ohta , T. Shima , M. Tanaka , M. Yosoi

The observation of lepton flavour violation (LFV) in interactions involving charged leptons would be an unambiguous sign of physics beyond the Standard Model of particle physics. Given that muons can be produced at high intensities,…

High Energy Physics - Experiment · Physics 2023-10-25 Ann-Kathrin Perrevoort

Inspired by the recent diboson excess observed at the LHC and possible interpretation within a TeV-scale Left-Right symmetric framework, we explore its implications for low-energy experiments searching for lepton number and flavor…

High Energy Physics - Phenomenology · Physics 2016-02-03 Ram Lal Awasthi , P. S. Bhupal Dev , Manimala Mitra

In the supersymmetric model with local gauged baryon and lepton numbers(BLMSSM), the CP violating effects are considered to study the lepton electric dipole moment(EDM). The CP violating phases in BLMSSM are more than those in the standard…

High Energy Physics - Phenomenology · Physics 2015-07-24 Shu-Min Zhao , Tai-Fu Feng , Xi-Jie Zhan , Hai-Bin Zhang , Ben Yan

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…

High Energy Physics - Phenomenology · Physics 2015-05-28 E. Carquin , J. Ellis , M. E. Gomez , S. Lola

Many Standard Model extensions predict doubly-charged scalars; in particular, all models with resonances in charged lepton-pair channels with non-vanishing lepton number; if these are pair produced at the LHC, the observation of their decay…

High Energy Physics - Phenomenology · Physics 2015-06-16 Francisco del Aguila , Mikael Chala , Arcadi Santamaria , Jose Wudka

We consider the Standard Model with right-handed neutrinos to explain the masses of active neutrinos by the seesaw mechanism. Since active neutrinos as well as heavy neutral leptons are Majorana fermions in this case, the lepton number…

High Energy Physics - Phenomenology · Physics 2016-01-15 Takehiko Asaka , Takanao Tsuyuki