scholarly journals Fully automated precision predictions for heavy neutrino production mechanisms at hadron colliders

2016 ◽  
Vol 94 (5) ◽  
Author(s):  
Céline Degrande ◽  
Olivier Mattelaer ◽  
Richard Ruiz ◽  
Jessica Turner
Keyword(s):  
Heavy Neutrino ◽  
Hadron Colliders ◽  
Neutrino Production ◽  
Production Mechanisms

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 Limits on Heavy Neutrinos at NA48/2 and NA62

2018 ◽  
Vol 46 ◽  
pp. 1860043
Author(s):  
Lubos Bician
Keyword(s):  
Data Analysis ◽  
Heavy Neutrino ◽  
Charged Kaon ◽  
Kaon Decays ◽  
Large Samples ◽  
Neutrino Production ◽  
Upper Limits

Large samples of charged kaon decays have been collected by the NA48/2 (2003-2004), the NA62-R[Formula: see text] (2007) and the NA62 (2015) experiments at CERN SPS. This proceedings summarizes upper limits on heavy neutrino production measured by these experiments. The results from the 2015 data analysis at the NA62 experiment are preliminary.

scholarly journals Heavy neutrino production via Z′ at the lifetime frontier

2019 ◽  
Vol 100 (3) ◽  
Author(s):  
Frank F. Deppisch ◽  
Suchita Kulkarni ◽  
Wei Liu
Keyword(s):  
Heavy Neutrino ◽  
Neutrino Production

scholarly journals Status of rates and rate equations for thermal leptogenesis

2018 ◽  
Vol 33 (05n06) ◽  
pp. 1842004 ◽  
Author(s):  
S. Biondini ◽  
D. Bödeker ◽  
N. Brambilla ◽  
M. Garny ◽  
J. Ghiglieri ◽  
...  
Keyword(s):  
Evolution Equations ◽  
Mass Scale ◽  
Rate Equations ◽  
Heavy Neutrino ◽  
Main Role ◽  
Lepton Asymmetry ◽  
Cp Asymmetry ◽  
Neutrino Production ◽  
Hot Plasma ◽  
The Right

In many realizations of leptogenesis, heavy right-handed neutrinos play the main role in the generation of an imbalance between matter and antimatter in the early Universe. Hence, it is relevant to address quantitatively their dynamics in a hot and dense environment by taking into account the various thermal aspects of the problem at hand. The strong washout regime offers an interesting framework to carry out calculations systematically and reduce theoretical uncertainties. Indeed, any matter–antimatter asymmetry generated when the temperature of the hot plasma [Formula: see text] exceeds the right-handed neutrino mass scale [Formula: see text] is efficiently erased, and one can focus on the temperature window [Formula: see text]. We review recent progress in the thermal field theoretic derivation of the key ingredients for the leptogenesis mechanism: the right-handed neutrino production rate, the CP asymmetry in the heavy-neutrino decays and the washout rates. The derivation of evolution equations for the heavy-neutrino and lepton-asymmetry number densities, their rigorous formulation and applicability are also discussed.

Signatures of heavy-neutrino production at the CERN collider

1986 ◽  
Vol 34 (9) ◽  
pp. 2732-2738 ◽  
Author(s):  
Howard E. Haber ◽  
M. Hall Reno
Keyword(s):  
Heavy Neutrino ◽  
Neutrino Production

scholarly journals Flavour and polarisation in heavy neutrino production at e+e− colliders

2005 ◽  
Vol 613 (3-4) ◽  
pp. 170-180 ◽  
Author(s):  
F. del Aguila ◽  
J.A. Aguilar-Saavedra ◽  
A. Martínez de la Ossa ◽  
D. Meloni
Keyword(s):  
Heavy Neutrino ◽  
Neutrino Production

scholarly journals Heavy neutrino signals at large hadron colliders

2007 ◽  
Vol 2007 (10) ◽  
pp. 047-047 ◽  
Author(s):  
Francisco del Aguila ◽  
Juan Antonio Aguilar-Saavedra ◽  
Roberto Pittau
Keyword(s):  
Heavy Neutrino ◽  
Hadron Colliders

GENERAL CHARACTERISTICS OF Bc-MESONS: PRODUCTION MECHANISMS AND DECAYS

1991 ◽  
Vol 06 (13) ◽  
pp. 2309-2329 ◽  
Author(s):  
S.S. GERSHTEIN ◽  
A.K. LIKHODED ◽  
S.R. SLABOSPITSKY
Keyword(s):  
Mass Spectrum ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Hadron Colliders ◽  
Electromagnetic Transition ◽  
Decay Channels ◽  
Real Possibility ◽  
Neutrino Interactions ◽  
Production Mechanisms

Using Martin’s potential, independently of b- and c-quark flavours, we calculate the mass spectrum of [Formula: see text]-mesons and widths of electromagnetic transition between them. We obtain the estimates of the production cross-section at e+e− colliders, in hadronic and neutrino interactions. A real possibility of observing Bc-mesons at LEP (up to 500 Bc per 106 Z0) and at hadron colliders [Formula: see text] has been pointed out. The importance of observing the annihilation decay channels of Bc-mesons—Bc→τντ( Br (Bc→τντ)=1.5–2%) and Bc→ϕDs, DK, etc.—has been emphasized.

scholarly journals Axion–Sterile Neutrino Dark Matter

Universe ◽  
2021 ◽  
Vol 7 (10) ◽  
pp. 354
Author(s):  
Alberto Salvio ◽  
Simone Scollo
Keyword(s):  
Dark Matter ◽  
Decay Constant ◽  
Sterile Neutrino ◽  
Topological Defects ◽  
Primordial Black Holes ◽  
Neutrino Production ◽  
The Standard Model ◽  
Axion Decay Constant ◽  
Axion Decay ◽  
Production Mechanisms

Extending the standard model with three right-handed neutrinos and a simple QCD axion sector can account for neutrino oscillations, dark matter and baryon asymmetry; at the same time, it solves the strong CP problem, stabilizes the electroweak vacuum and can implement critical Higgs inflation (satisfying all current observational bounds). We perform here a general analysis of dark matter (DM) in such a model, which we call the aνMSM. Although critical Higgs inflation features a (quasi) inflection point of the inflaton potential, we show that DM cannot receive a contribution from primordial black holes in the aνMSM. This leads to a multicomponent axion–sterile neutrino DM and allows us to relate the axion parameters, such as the axion decay constant, to the neutrino parameters. We include several DM production mechanisms: the axion production via misalignment and decay of topological defects as well as the sterile neutrino production through the resonant and non-resonant mechanisms and in the recently proposed CPT-symmetric universe.

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