Results 111 to 120 of about 41,177 (205)

Shadow dark matter, sterile neutrinos and neutrino events at IceCube

, 2015
The excess of high energy neutrinos observed by the Ice Cube collaboration might originate from baryon number violating decays of heavy shadow baryons from dark mirror sector which produce shadow neutrinos.
BEREJIANI, ZOURAB, Zurab Berezhiani
core   +1 more source

86th Annual Meeting of the Meteoritical Society (2024)

Meteoritics &Planetary Science, Volume 59, Issue S1, Page A1-A468, August 2024.
wiley   +1 more source

Testable inverse seesaw motivated from a high quality QCD axion

Journal of High Energy Physics
The QCD axion remains one of the most compelling solutions to the strong CP problem. Meanwhile, the type-I seesaw mechanism offers an elegant explanation for the lightness of the observed neutrino masses; however, its extremely heavy Majorana states ...
Yannis Georis, Jie Sheng, Salvador Urrea, Tsutomu T. Yanagida   +3 more
doaj   +1 more source

Production of heavy sterile neutrinos from vector boson decay at electroweak temperatures

Physical Review D, 2017
In the standard model extended with a seesaw mass matrix, we study the production of sterile neutrinos from the decay of vector bosons at $T\simeq M_{W,Z}$. We derive a general quantum kinetic equation for the production of sterile neutrinos and their effective mixing angles valid in a wide range of temperature, to all orders in interactions of the ...
Lello, Louis, Boyanovsky, Daniel, Pisarski, Robert D.   +2 more
openaire   +3 more sources

First bounds on effective muon interactions using the NA64μ experiment at CERN

Journal of High Energy Physics
We analyze how NA64μ can contribute to the global SMEFT program demonstrating that it can probe two effective four-lepton operators completely unbounded so far and break one of the current flat directions. Furthermore, we also study an extension of SMEFT
Paolo Crivelli, Josu Hernández-García, Jacobo López-Pavón, Víctor Martín Lozano, Laura Molina Bueno   +4 more
doaj   +1 more source

Neutrinoless Double Beta Decay and Heavy Sterile Neutrinos

, 2019
Presentation from Neutrino Platform Week 2019: Hot Topics in Neutrino Physics, CERN, 7-11 October ...
openaire   +2 more sources

Impact of dim-6 νSMEFT operators on low-scale leptogenesis

Journal of High Energy Physics
We investigate the impact of higher-dimensional operators on low-scale leptogenesis (LG) via oscillations of right-handed neutrinos within the neutrino-extended Standard Model Effective Field Theory (νSMEFT) and discuss the connection to neutrinoless ...
Kaori Fuyuto, Julia Harz, Sascha Weber
doaj   +1 more source

Supernova bound on keV-mass sterile neutrinos

, 2011
In this talk, I first explain why the keV-mass sterile neutrinos, slightly mixing with ordinary neutrinos, are interesting in particle astrophysics.
Zhou, Shun
core   +1 more source

New parameter region in sterile neutrino searches: a scenario to alleviate cosmological neutrino mass bound and its testability at oscillation experiments

Journal of High Energy Physics
Recent high-precision cosmological data tighten the bound to neutrino masses and start rising a tension to the results of lab-experiment measurements, which may hint new physics in the role of neutrinos during the structure formation in the universe.
Toshihiko Ota
doaj   +1 more source

New limits on heavy sterile neutrino mixing in ${^{8}\rm{B}}$-decay obtained with the Borexino detector

, 2013
If heavy neutrinos with mass $m_{ν_{H}}\geq$2$ m_e $ are produced in the Sun via the decay ${^8\rm{B}} \rightarrow {^8\rm{Be}} + e^+ + ν_H$ in a side branch of pp-chain, they would undergo the observable decay into an electron, a positron and a light neutrino $ν_{H}\rightarrowν_{L}+e^++e^-$.
Borexino collaboration, Bellini, G., Benziger, J., Bick, D., Bonfini, G., Bravo, D., Avanzini, M. Buizza, Caccianiga, B., Cadonati, L., Calaprice, F., Cavalcante, P., Chavarria, A., Chepurnov, A., DAngelo, D., Davini, S., Derbin, A., Drachnev, I., Empl, A., Etenko, A., Fomenko, K., Franco, D., Galbiati, C., Gazzana, S., Ghiano, C., Giammarchi, M., Goger-Neff, M., Goretti, A., Grandi, L., Hagner, C., Hungerford, E., Ianni, Aldo, Ianni, Andrea, Kobychev, V., Korablev, D., Korga, G., Kryn, D., Laubenstein, M., Lewke, T., Litvinovich, E., Loer, B., Lombardi, F., Lombardi, P., Ludhova, L., Lukyanchenko, G., Machulin, I., Manecki, S., Maneschg, W., Manuzio, G., Meindl, Q., Meroni, E., Miramonti, L., Misiaszek, M., Mosteiro, P., Muratova, V., Oberauer, L., Obolensky, M., Ortica, F., Otis, K., Pallavicini, M., Papp, L., Perasso, L., Perasso, S., Pocar, A., Ranucci, G., Razeto, A., Re, A., Romani, A., Rossi, N., Saldanha, R., Salvo, C., Schonert, S., Simgen, H., Skorokhvatov, M., Smirnov, O., Sotnikov, A., Sukhotin, S., Suvorov, Y., Tartaglia, R., Testera, G., Vignaud, D., Vogelaar, R. B., von Feilitzsch, F., Winter, J., Wojcik, M., Wright, A., Wurm, M., Xu, J., Zaimidoroga, O., Zavatarelli, S., Zuzel, G.   +89 more
openaire   +7 more sources