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Neutrinoless double-beta decay is proposed as an important low energy phenomenon that could test beyond the Standard Model physics. There are several potentially competing beyond the Standard Model mechanisms that can induce the process. It…

High Energy Physics - Phenomenology · Physics 2019-12-09 Fahim Ahmed , Andrei Neacsu , Mihai Horoi

The neutrinoless double beta ($0\nu\beta\beta$) decay is studied in the framework of left-right symmetric model. The coexistence of left and right handed currents induces rather complicated interactions in the mixing of lepton and hadrons,…

High Energy Physics - Phenomenology · Physics 2023-08-30 Takeshi Fukuyama , Toru Sato

The $\lambda$ mechanism ($W_L$-$W_R$ exchange) of the neutrinoless double beta decay ($0\nu\beta\beta$-decay), which has origin in left-right symmetric model with right-handed gauge boson at TeV scale, is investigated. The revisited…

High Energy Physics - Phenomenology · Physics 2018-04-13 Fedor Šimkovic , Dušan Štefánik , Rastislav Dvornický , Amand Faessler

We use the large scale nuclear shell model to calculate the nuclear matrix elements for the neutrino mediated neutrinoless double beta decay within the Left-Right symmetric model for four nuclei: $^{76}$Ge, $^{82}$Se, $^{130}$Te and…

Nuclear Theory · Physics 2024-07-04 Dong-Liang Fang , B. Alex Brown , Fedor Šimkovic

A measurement of neutrinoless double beta decay in one isotope does not allow to determine the underlying physics mechanism. We discuss the discrimination of mechanisms for neutrinoless double beta decay by comparing ratios of half life…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. Deppisch , H. Päs

We consider the possibility of several different mechanisms contributing to the $\betabeta$-decay amplitude in the general case of CP nonconservation: light Majorana neutrino exchange, heavy left-handed (LH) and heavy right-handed (RH)…

High Energy Physics - Phenomenology · Physics 2011-06-24 Amand Faessler , Aurora Meroni , Serguey T. Petcov , Fedor Simkovic , John Vergados

We study the impact of the mixing (LR mixing) between the standard model $W$ boson and its hypothetical, heavier right-handed parter $W_R$ on the neutrinoless double beta decay ($0\nu\beta\beta$-decay) rate. Our study is done in the minimal…

High Energy Physics - Phenomenology · Physics 2021-04-21 Gang Li , Michael Ramsey-Musolf , Juan Carlos Vasquez

We revisit the "interpolating formula" proposed in our previous publication. It allows one to calculate the neutrinoless double beta decay ($0\nu\beta\beta$-decay) half-life for arbitrary neutrino mass without involvement of the complicated…

High Energy Physics - Phenomenology · Physics 2018-07-11 A. Babič , S. Kovalenko , M. I. Krivoruchenko , F. Šimkovic

Neutrinoless double beta decay can significantly help to shed light on the issue of non-zero neutrino mass, as observation of this lepton number violating process would imply neutrinos are Majorana particles. However, the underlying…

High Energy Physics - Phenomenology · Physics 2018-12-05 Lukas Graf , Frank F. Deppisch , Francesco Iachello , Jenni Kotila

The extension of Majorana neutrino mass mechanism of the neutrinoless double-beta decay ($0\nu\beta\beta$) with the inclusion of right-handed leptonic and hadronic currents is revisited. While only the exchange of light neutrinos is…

High Energy Physics - Phenomenology · Physics 2015-11-11 Dusan Stefanik , Rastislav Dvornicky , Fedor Simkovic , Petr Vogel

We discuss the systematic decomposition of the dimension nine neutrinoless double beta decay operator, focusing on mechanisms with potentially small contributions to neutrino mass, while being accessible at the LHC. We first provide a (d=9…

High Energy Physics - Phenomenology · Physics 2015-06-12 Florian Bonnet , Martin Hirsch , Toshihiko Ota , Walter Winter

Neutrinoless double beta decay is the most powerful tool to probe not only for Majorana neutrino masses but for lepton number violating physics in general. We discuss relations between lepton number violation, double beta decay and neutrino…

High Energy Physics - Phenomenology · Physics 2015-06-11 Frank F. Deppisch , Martin Hirsch , Heinrich Päs

Neutrinoless double beta decay allows to constrain lepton number violating extensions of the standard model. If neutrinos are Majorana particles, the mass mechanism will always contribute to the decay rate, however, it is not a priori…

High Energy Physics - Phenomenology · Physics 2015-05-22 J. C. Helo , M. Hirsch , T. Ota , F. A. Pereira dos Santos

We have examined the importance of momentum dependent induced nucleon currents such as weak-magnetism and pseudoscalar couplings to the amplitude of neutrinoless double beta decay in the mechanisms of light and heavy Majorana neutrino as…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. Simkovic , G. Pantis , J. D. Vergados , A. Faessler

We discuss a novel effect in neutrinoless double beta (0{\nu}{\beta}{\beta}) decay related with the fact that its underlying mechanisms take place in the nuclear matter environment. We study the neutrino exchange mechanism and demonstrate…

High Energy Physics - Phenomenology · Physics 2014-04-23 S. Kovalenko , M. I. Krivoruchenko , F. Simkovic

Neutrinoless double beta decay violates lepton number by two units, a positive observation therefore necessarily implies physics beyond the standard model. Here, three possible contributions to neutrinoless double beta decay are briefly…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Hirsch

We study the impact of new physics contributions to neutrinoless double beta decay arising from right-handed current in comparison with the standard mechanism. If the light neutrinos obtain their masses from Type-II seesaw within left-right…

High Energy Physics - Phenomenology · Physics 2015-08-31 Shao-Feng Ge , Manfred Lindner , Sudhanwa Patra

Neutrinoless double beta decay is a very important process both from the particle and nuclear physics point of view. Its observation will severely constrain the existing models and signal that the neutrinos are massive Majorana particles.…

High Energy Physics - Phenomenology · Physics 2011-04-15 J. D. Vergados

Neutrinoless double beta decay is a very important process both from the particle and nuclear physics point of view. From the elementary particle point of view it pops up in almost every model. giving rise, among others, to the following…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. D. Vergados

Neutrinoless double-beta decay, if observed, would signal physics beyond the Standard Model that could be discovered at energies significantly lower than those at which the relevant degrees of freedom could be excited. Therefore, it could…

High Energy Physics - Phenomenology · Physics 2016-07-13 Mihai Horoi , Andrei Neacsu
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