Decay and decoupling of heavy right-handed Majorana neutrinos in the L–R model

Adhya, Paramita; Chaudhuri, Dwaipayan; Raychaudhuri, Amitava

doi:10.1007/s100520100575

Cited by 6 publications

(3 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence, cosmology forbids right-handed neutrinos with m ν R > m W ′ . However this conclusion would be invalidated if there exists an additional anomalous interaction of ν R or in the obvious case of an unstable heavy neutrino [249].…”

Section: Right-handed Dirac Neutrinosmentioning

confidence: 99%

Neutrinos in cosmology

2002

View full text Add to dashboard Cite

Cosmological implications of neutrinos are reviewed. The following subjects are discussed at a different level of scrutiny: cosmological limits on neutrino mass, neutrinos and primordial nucleosynthesis, cosmological constraints on unstable neutrinos, lepton asymmetry of the universe, impact of neutrinos on cosmic microwave radiation, neutrinos and the large scale structure of the universe, neutrino oscillations in the early universe, baryo/lepto-genesis and neutrinos, neutrinos and high energy cosmic rays, and briefly some more exotic subjects: neutrino balls, mirror neutrinos, and neutrinos from large extra dimensions. Content

show abstract

Section: Right-handed Dirac Neutrinosmentioning

confidence: 99%

Neutrinos in cosmology

2002

View full text Add to dashboard Cite

show abstract

“…We also assume that the right-handed quark mixing matrix is the same as the Cabibbo-Kobayashi-Maskawa matrix. In addition to the gauge bosons, LR models usually include heavy righthanded neutrinos (N R ) [5,6]. The existence of these heavy neutrinos can explain the very small masses of the SM neutrinos as a consequence of the see-saw mechanism [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Search for a heavy right-handed W boson and a heavy neutrino in events with two same-flavor leptons and two jets at $$ \sqrt{s}=13 $$ TeV

Sirunyan

Tumasyan

Adam

et al. 2018

J. High Energ. Phys.

View full text Add to dashboard Cite

Search for a heavy right-handed W boson and a heavy neutrino in events with two same-flavor leptons and two jets at √ s = 13 TeVThe CMS Collaboration * AbstractA search for a heavy right-handed W boson (W R ) decaying to a heavy right-handed neutrino and a charged lepton in events with two same-flavor leptons (e or µ) and two jets, is presented. The analysis is based on proton-proton collision data, collected by the CMS Collaboration at the LHC in 2016 and corresponding to an integrated luminosity of 35.9 fb −1 . No significant excess above the standard model expectation is seen in the invariant mass distribution of the dilepton plus dijet system. Assuming that couplings are identical to those of the standard model, and that only one heavy neutrino flavor N R contributes significantly to the W R decay width, the region in the two-dimensional (m W R , m N R ) mass plane excluded at 95% confidence level extends to approximately m W R = 4.4 TeV and covers a large range of right-handed neutrino masses below the W R boson mass. This analysis provides the most stringent limits on the W R mass to date.

show abstract

“…In our model we have shown how the gravitational interaction allows a production of an asymmetry between HRN and HLA. This asymmetry is transferred to ordinary light neutrinos via decay processes of the HRN and HLA (for further details see [32,38]). This happened at T ∼ M ∼ 10 12 GeV .…”

Section: Amentioning

confidence: 99%

Baryo-Leptogenesis induced by modified gravities in the primordial Universe

Pizza

2015

Preprint

View full text Add to dashboard Cite

The long-standing problem of the asymmetry between matter and antimatter in the Universe is, in this paper, analysed in the context of the modified theories of gravity. In particular we study two models of f (R) theories of gravitation that, with the opportune choice of the free parameters, introduce a little perturbation to the scale factor of the Universe in the radiation dominated (RD) phase predicted by general relativity (GR), i.e., a(t) ∼ t 1/2 . This little perturbation generates a Ricci scalar different by zero, i.e., R = 0 that reproduces the correct magnitude for the asymmetry factor η computed in the frame of the theories of the gravitational baryogenesis and gravitational leptogenesis. The opportune choice of the free parameters is discussed in order to obtain results coherent with experimental data. Furthermore, the form of the potential V , for the scalar-tensor theory conformally equivalent to the f (R) theory which reproduces the right asymmetry factor, is here obtained.

show abstract

Decay and decoupling of heavy right-handed Majorana neutrinos in the L–R model

Cited by 6 publications

References 26 publications

Neutrinos in cosmology

Neutrinos in cosmology

Search for a heavy right-handed W boson and a heavy neutrino in events with two same-flavor leptons and two jets at $$ \sqrt{s}=13 $$ TeV

Baryo-Leptogenesis induced by modified gravities in the primordial Universe

Contact Info

Product

Resources

About