scholarly journals Majorana neutrino magnetic moment and neutrino decoupling in big bang nucleosynthesis

2015 ◽  
Vol 92 (12) ◽  
Author(s):  
N. Vassh ◽  
E. Grohs ◽  
A. B. Balantekin ◽  
G. M. Fuller
Keyword(s):  
Magnetic Moment ◽  
Big Bang ◽  
Majorana Neutrino ◽  
Big Bang Nucleosynthesis ◽  
Neutrino Magnetic Moment

scholarly journals NEUTRALINO INDUCED MAJORANA NEUTRINO TRANSITION MAGNETIC MOMENTS

2009 ◽  
Vol 18 (04) ◽  
pp. 1094-1098 ◽  
Author(s):  
MAREK GÓŹDŹ ◽  
WIESŁAW A. KAMIŃSKI
Keyword(s):  
Magnetic Moment ◽  
Magnetic Moments ◽  
Majorana Neutrino ◽  
Neutrino Magnetic Moment ◽  
Order Of Magnitude

We calculate the effect of neutrino-neutralino mixing on the neutrino magnetic moment and compare it with the contribution of pure particle-sparticle loop. We have found that the dominated mechanism is still the bare loop, and that the bilinear insertions on the external neutrino lines contribute at least one order of magnitude weaker.

scholarly journals Neutron star kick velocity induced by neutrino chirality flip and a lower bound for the neutrino magnetic moment

2021 ◽  
Author(s):  
Alejandro Ayala ◽  
Santiago Bernal Langarica ◽  
Saul Hernández‐Ortiz ◽  
Luis Alberto Hernández ◽  
Daryel Manreza‐Paret
Keyword(s):  
Neutron Star ◽  
Lower Bound ◽  
Magnetic Moment ◽  
Neutrino Magnetic Moment

scholarly journals Probing neutrino magnetic moment at the Jinping neutrino experiment

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Baobiao Yue ◽  
Jiajun Liao ◽  
Jiajie Ling
Keyword(s):  
Magnetic Moment ◽  
Liquid Scintillator ◽  
Solar Neutrinos ◽  
Electron Neutrino ◽  
Neutrino Experiment ◽  
Neutrino Magnetic Moment ◽  
Systematic Uncertainties ◽  
Electron Recoil ◽  
Massive Neutrinos ◽  
Highly Correlated

Abstract Neutrino magnetic moment (νMM) is an important property of massive neutrinos. The recent anomalous excess at few keV electronic recoils observed by the XENON1T collaboration might indicate a ∼ 2.2 × 10−11μB effective neutrino magnetic moment ($$ {\mu}_{\nu}^{\mathrm{eff}} $$ μ ν eff ) from solar neutrinos. Therefore, it is essential to carry out the νMM searches at a different experiment to confirm or exclude such a hypothesis. We study the feasibility of doing νMM measurement with 4 kton fiducial mass at Jinping neutrino experiment (Jinping) using electron recoil data from both natural and artificial neutrino sources. The sensitivity of $$ {\mu}_{\nu}^{\mathrm{eff}} $$ μ ν eff can reach < 1.2 × 10−11μB at 90% C.L. with 10-year data taking of solar neutrinos. Besides the abundance of the intrinsic low energy background 14C and 85Kr in the liquid scintillator, we find the sensitivity to νMM is highly correlated with the systematic uncertainties of pp and 85Kr. Reducing systematic uncertainties (pp and 85Kr) and the intrinsic background (14C and 85Kr) can help to improve sensitivities below these levels and reach the region of astrophysical interest. With a 3 mega-Curie (MCi) artificial neutrino source 51Cr installed at Jinping neutrino detector for 55 days, it could give us a sensitivity to the electron neutrino magnetic moment ($$ {\mu}_{\nu_e} $$ μ ν e ) with < 1.1 × 10−11μB at 90% C.L. . With the combination of those two measurements, the flavor structure of the neutrino magnetic moment can be also probed at Jinping.

Refined big bang nucleosynthesis constraints onΩBandNν

1994 ◽  
Vol 72 (21) ◽  
pp. 3309-3312 ◽  
Author(s):  
Peter J. Kernan ◽  
Lawrence M. Krauss
Keyword(s):  
Big Bang ◽  
Big Bang Nucleosynthesis

scholarly journals Searching for space-time variation of the fine structure constant using QSO spectra: overview and future prospects

2009 ◽  
Vol 5 (H15) ◽  
pp. 304-304
Author(s):  
J. C. Berengut ◽  
V. A. Dzuba ◽  
V. V. Flambaum ◽  
J. A. King ◽  
M. G. Kozlov ◽  
...  
Keyword(s):  
Nuclear Reactor ◽  
Structure Constant ◽  
Big Bang ◽  
The Other ◽  
Fine Structure Constant ◽  
Spatial And Temporal Variation ◽  
Fundamental Constants ◽  
Future Prospects ◽  
Big Bang Nucleosynthesis ◽  
The Universe

Current theories that seek to unify gravity with the other fundamental interactions suggest that spatial and temporal variation of fundamental constants is a possibility, or even a necessity, in an expanding Universe. Several studies have tried to probe the values of constants at earlier stages in the evolution of the Universe, using tools such as big-bang nucleosynthesis, the Oklo natural nuclear reactor, quasar absorption spectra, and atomic clocks (see, e.g. Flambaum & Berengut (2009)).

Big Bang nucleosynthesis as a probe of varying fundamental “constants”

2007 ◽  
Author(s):  
Thomas Dent ◽  
Steffen Stern ◽  
Christof Wetterich ◽  
Arttu Rajantie ◽  
Carlo Contaldi ◽  
...  
Keyword(s):  
Big Bang ◽  
Fundamental Constants ◽  
Big Bang Nucleosynthesis

scholarly journals Big-bang nucleosynthesis in a Brans-Dicke cosmology with a varying $\mathsf{\Lambda}$ term related to WMAP

2006 ◽  
Vol 448 (1) ◽  
pp. 23-27 ◽  
Author(s):  
R. Nakamura ◽  
M. Hashimoto ◽  
S. Gamow ◽  
K. Arai
Keyword(s):  
Big Bang ◽  
Big Bang Nucleosynthesis
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