scholarly journals Heavy Neutrino signals in models with extended lepton sector

2021 ◽  
Author(s):  
Tatiana Nikolaeva
Keyword(s):  
Heavy Neutrino ◽  
Lepton Sector

Coherent radiation, not a heavy neutrino?

1992 ◽  
Vol 68 (9) ◽  
pp. 1434-1434 ◽  
Author(s):  
Norman K. Sherman
Keyword(s):  
Coherent Radiation ◽  
Heavy Neutrino

NEUTRINO OSCILLATION AND LEPTON MASS MATRIX

1994 ◽  
Vol 09 (01) ◽  
pp. 41-50 ◽  
Author(s):  
KEN-ITI MATUMOTO ◽  
DAIJIRO SUEMATSU
Keyword(s):  
Solar Neutrino ◽  
Phase Structure ◽  
Quark Mass ◽  
Mass Matrix ◽  
Lepton Sector ◽  
Solar Neutrino Problem ◽  
Quark Sector ◽  
Mass Matrices ◽  
Suppression Mechanism ◽  
The Right

We apply the empirical quark mass matrices to the lepton sector and study the solar neutrino problem and the atmospheric vμ deficit problem simultaneously. We show that their consistent explanation is possible on the basis of these matrices. The lepton sector mass matrices need the phase structure which is different from the ones of the quark sector. However, even if the phase structure of the mass matrices is identical in both sectors, an interesting suppression mechanism of sin 2 2θ12 which is related to the solar neutrino problem can be induced from the right-handed neutrino Majorana mass matrix. We discuss such a possibility through the concrete examples.

scholarly journals Gravitational phase transition of heavy neutrino matter

1998 ◽  
Vol 40 ◽  
pp. 17-27 ◽  
Author(s):  
N. Bilić ◽  
D. Tsiklauri ◽  
R.D. Viollier
Keyword(s):  
Phase Transition ◽  
Heavy Neutrino

scholarly journals Neutrino mixings as a source of lepton flavor violations

2018 ◽  
Vol 33 (32) ◽  
pp. 1850201
Author(s):  
O. M. Boyarkin ◽  
G. G. Boyarkina ◽  
D. S. Vasileuskaya
Keyword(s):  
Branching Ratios ◽  
Point Of View ◽  
Heavy Neutrino ◽  
Neutrino Masses ◽  
Symmetric Model ◽  
Neutrino Mixing ◽  
Third Order ◽  
Neutrino Sector ◽  
Lepton Flavor ◽  
Flavor Violations

Within the left–right symmetric model (LRM) the [Formula: see text] boson decay into the channel [Formula: see text] are investigated. The branching ratios of this decay is found in the third order of the perturbation theory. The obtained expression does not equal to zero only at the existence of the neutrino mixings. This means that from the point of view of the LRM, the nonconservations of the neutral and the charged lepton flavors have the same nature. As a result, the elucidation of the decays [Formula: see text] [Formula: see text] could provide data concerned the neutrino sector structure of the LRM. The neutrino sector parameters which could be measured in that case are as follows: (i) difference of the heavy neutrino masses; (ii) heavy–heavy neutrino mixing; (iii) heavy–light neutrino mixing.

scholarly journals CPviolation in the heavy neutrino production processe+e−→N1N2

1995 ◽  
Vol 51 (9) ◽  
pp. 4707-4711 ◽  
Author(s):  
J. Gluza ◽  
M. Zrałek
Keyword(s):  
Heavy Neutrino ◽  
Neutrino Production

scholarly journals Search for heavy neutral leptons in $$W^+\rightarrow \mu ^{+}\mu ^{\pm }\, \text {jet}$$ decays

2021 ◽  
Vol 81 (3) ◽  
Author(s):  
R. Aaij ◽  
◽  
C. Abellán Beteta ◽  
T. Ackernley ◽  
B. Adeva ◽  
...  
Keyword(s):  
Mass Range ◽  
Lepton Number ◽  
Heavy Neutrino ◽  
Proton Collision ◽  
Final State ◽  
Data Set ◽  
Proton Proton ◽  
Upper Limits ◽  
The Standard Model ◽  
Proton Proton Collision

AbstractA search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately $$3.0\, \text {fb} ^{-1} $$ 3.0 fb - 1 of proton–proton collision data at centre-of-mass energies of 7 and $$8\, \text {TeV} $$ 8 TeV collected with the LHCb experiment. Both same-sign and opposite-sign muons in the final state are considered. Data are found to be consistent with the expected background. Upper limits on the coupling of a heavy neutrino with the Standard Model neutrino are set at $$95\%$$ 95 % confidence level in the heavy-neutrino mass range from 5 to $$50\, \text {GeV/}c^2 $$ 50 GeV/ c 2 . These are of the order of $$10^{-3}$$ 10 - 3 for lepton-number-conserving decays and of the order of $$10^{-4}$$ 10 - 4 for lepton-number-violating heavy-neutrino decays.

scholarly journals New limits on heavy neutrino from NA62

2017 ◽  
Author(s):  
Michal Koval ◽  
Keyword(s):  
Heavy Neutrino

scholarly journals Minimal flavor violation in the lepton sector

2005 ◽  
Vol 728 (1-3) ◽  
pp. 121-134 ◽  
Author(s):  
Vincenzo Cirigliano ◽  
Benjamín Grinstein ◽  
Gino Isidori ◽  
Mark B. Wise
Keyword(s):  
Lepton Sector ◽  
Minimal Flavor Violation ◽  
Flavor Violation
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