Results 71 to 80 of about 9,023 (214)

On the keV sterile neutrino search in electron capture

, 2014
A joint effort of cryogenic microcalorimetry (CM) and high-precision Penning-trap mass spectrometry (PT-MS) in investigating atomic orbital electron capture (EC) can shed light on the possible existence of heavy sterile neutrinos with masses from 0.5 to ...
Blaum, K., Eliseev, S. A., Filianin, P. E., Gastaldo, L., Novikov, Yu. N., Shabaev, V. M., Tupitsyn, I. I., Vergados, J.   +7 more
core   +1 more source

Neutrino Physics in the Frontiers of Intensities and Very High Sensitivities 2016

, 2017
Advances in High Energy Physics, Volume 2017, Issue 1, 2017.
Theocharis Kosmas, Hiroyasu Ejiri, Athanasios Hatzikoutelis   +2 more
wiley   +1 more source

MeV sterile neutrinos in low reheating temperature cosmological scenarios

, 2008
It is commonly assumed that the cosmological and astrophysical bounds on the mixings of sterile with active neutrinos are much more stringent than those obtained from laboratory measurements.
Atre A Han T Pascoli S Zhang B, de Gouvêa A, Efunwande Osoba, Fixsen D J, Graciela Gelmini, Hansen S H, Kappadath S C, Kompaneets A S, Kusenko A, Sergio Palomares-Ruiz, Silvia Pascoli, Sreekumar P, Strong A W, Yaguna C E   +13 more
core   +1 more source

Constraining the SMEFT extended with sterile neutrinos at FCC-ee

Journal of High Energy Physics
We investigate how extensions of the Standard Model (SM) involving heavy neutral leptons (HNLs) can be probed at FCC-ee, the proposed high-energy circular e + e − collider.
Patrick D. Bolton, Frank F. Deppisch, Suchita Kulkarni, Chayan Majumdar, Wenna Pei   +4 more
doaj   +1 more source

Improving Electro-Weak Fits with TeV-scale Sterile Neutrinos

, 2013
We study the impact of TeV-scale sterile neutrinos on electro-weak precision observables and lepton number and flavour violating decays in the framework of a type-I see-saw extension of the Standard Model.
Akhmedov, Evgeny, Kartavtsev, Alexander, Lindner, Manfred, Michaels, Lisa, Smirnov, Juri   +4 more
core   +1 more source

Enhanced Electromagnetic Transition Dipole Moments and Radiative Decays of Massive Neutrinos due to the Seesaw-induced Non-unitary Effects

, 2012
In a simple extension of the standard electroweak theory where the phenomenon of lepton flavor mixing is described by a 3x3 unitary matrix V, the electric and magnetic dipole moments of three active neutrinos are suppressed not only by their tiny masses ...
Abada, Ahn, An, Antusch, Casas, de Gouvea, Fogli, Gell-Mann, Giunti, Glashow, Glashow, Kayser, Kim, Kopp, Matsuura, Minkowski, Mirizzi, Mohapatra, Nakamura, Nieves, Pal, Pilaftsis, Raffelt, Schwetz, Shrock, Vissani, Xing, Xing, Xing, Xing, Xing, Yanagida, Ye-Ling Zhou, Zhi-zhong Xing   +33 more
core   +1 more source

Probing leptogenesis with GeV-scale sterile neutrinos at LHCb and BELLE II

, 2014
We show that existing laboratory experiments have the potential to unveil the origin of matter by probing leptogenesis in the type-I seesaw model with three right-handed neutrinos and Majorana masses in the GeV range. The baryon asymmetry is generated by
Canetti, Laurent, Drewes, Marco, Garbrecht, Björn   +2 more
core   +1 more source

Heavy neutrino decays at MiniBooNE

, 2013
It has been proposed that a sterile neutrino \nu_h with m_h \approx 50 MeV and a dominant decay mode (\nu_h -> \nu\gamma) may be the origin of the experimental anomaly observed at LSND.
Masip, Manuel, Masjuan, Pere, Meloni, Davide   +2 more
core   +1 more source

Probing oscillations into sterile neutrinos with cosmology, astrophysics and experiments

, 2004
We perform a thorough analysis of oscillation signals generated by one extra sterile neutrino, extending previous analyses done in simple limiting cases and including the effects of established oscillations among active neutrinos.
A. Strumia, Abazajian, Abazajian, Adelberger, Akhmedov, Allen, Arkani-Hamed, Babu, Babu, Bahcall, Bahcall, Bando, Bandyopadhyay, Barbieri, Barbieri, Barger, Barger, Barger, Barger, Barger, Bashinsky, Beacom, Beacom, Bell, Bemporad, Benakli, Bennett, Berezhiani, Berezinsky, Bernstein, Bethe, Bilenky, Bionta, Blinikov, Borzumati, Botella, Brandenberger, Burrows, Caldwell, Caldwell, Cappellaro, Cei, Chauhan, Chun, Chun, Church, Cleveland, Cline, Creminelli, Crotty, Crotty, Crotty, Cuoco, Cyburt, D'Odorico, Davids, de Holanda, Degl'Innocenti, Di Bari, Di Bari, Di Bari, Dicus, Dolgov, Dolgov, Dolgov, Dolgov, Dolgov, Dolgov, Dziewonski, Enqvist, Enqvist, Esmailzadeh, Esposito, F. Vissani, Fetter, Fogli, Foot, Foot, Foot, Foot, Foot, Foot, Foot, Foot, Foot, Friedland, Fuller, G. Marandella, Gai, Gaisser, Gherghetta, Giunti, Giunti, Hammache, Hannestad, Hannestad, Hannestad, Hansen, Holanda, Iwasa, Izotov, Izotov, Izotov, Janka, Janka, Jegerlehner, Junghans, Kachelriess, Kachelriess, Kainulainen, Kainulainen, Keil, Keranen, Keranen, Kirilova, Kirilova, Kirilova, Kirkman, Kirkman, Kopeikin, Krolikowski, Kuo, Kuo, Kuo, Kusenko, Langacker, Levshakov, Lewis, Lisi, Lopez, LoSecco, Lunardini, M. Cirelli, Ma, Ma, Maltoni, Manohar, McDonald, McLaughlin, Michael, Mikheev, Mikheev, Mikheev, Mikheyev, Milsztajn, Nunokawa, Nunokawa, Nötzold, O'Meara, Okada, Olive, Olive, Pandola, Pantaleone, Parke, Peimbert, Peimbert, Peltoniemi, Peres, Petcov, Pettini, Picciotto, Pierce, Pierpaoli, Pizzochero, Päs, Raffelt, Raffelt, Rajasekaran, Sarkar, Schumann, Schwetz, Shi, Shi, Sigl, Silagadze, Smirnov, Snover, Sorel, Spergel, Stodolsky, Strieder, Strumia, Strumia, Strumia, Sturrock, Sturrock, Sturrock, Takahashi, Thompson, Thomson, Thuan, Villante, Vogel, Wagoner, Wolfenstein, Yoo   +196 more
core   +3 more sources

Bounding the Dimension-5 Seesaw Portal with non-pointing photon searches

Journal of High Energy Physics
The addition of d = 5 operators to the Seesaw model leads to the Dimension-5 Seesaw Portal. Here, two new operators provide interactions for the heavy sterile neutrinos.
L. Duarte, J. Jones-Pérez, C. Manrique-Chavil   +2 more
doaj   +1 more source