Asymmetry of neutrino emission from neutron beta decay in superdense matter and a strong magnetic field

Kauts, V. L.; Savochkin, A. M.; Studenikin, A. I.

doi:10.1134/s1063778806090031

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…As it has been demonstrated, for instance by Kaminker et al (1992), more consistent consideration of the process e → e + ν e +ν e appropriate for astrophysical applications implies account for the presence of background matter in addition to an external magnetic field. F. Neutrino pair production by a strong magnetic field Over the years, starting from the observation of Klein (1929), it has been known that the vacuum is not stable under the influence of an external electric field.…”

Section: E Neutrino Pair Production By An Electronmentioning

confidence: 99%

Neutrino electromagnetic interactions: A window to new physics

2015

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We review the theory and phenomenology of neutrino electromagnetic interactions, which give us powerful tools to probe the physics beyond the Standard Model. After a derivation of the general structure of the electromagnetic interactions of Dirac and Majorana neutrinos in the one-photon approximation, we discuss the effects of neutrino electromagnetic interactions in terrestrial experiments and in astrophysical environments. We present the experimental bounds on neutrino electromagnetic properties and we confront them with the predictions of theories beyond the Standard Model.

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Section: E Neutrino Pair Production By An Electronmentioning

confidence: 99%

Neutrino electromagnetic interactions: A window to new physics

2015

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“…Neutrino oscillation can be altered by the magnetic field, resulting in an anisotropy in the momentum of the outgoing neutrinos [15]. Parity violating can also induce an asymmetry on the neutrino emission when multiple-scattering of neutrinos in slightly polarized neutrons is taking into account [16,17]. Here we are particularly interested in this last mechanism, which on practice results from the addition of a modified differential cross section plus the cumulative effect of multiple-scattering.…”

Section: Introductionmentioning

confidence: 99%

Asymmetry of the neutrino mean free path in hot neutron matter under strong magnetic fields

2019

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The neutrino mean free path in neutron matter under a strong magnetic field is evaluated for the inelastic scattering reaction and studied as a function of the neutron matter density in the range 0.05 ≤ ρ ≤ 0.4 fm −3 for several temperatures up to 30 MeV and magnetic field strengths B=0 G, 10 18 G and 2.5 × 10 18 G. Polarized neutron matter is described within the non-relativistic Brueckner-Hartree-Fock (BHF) approach using the Argonne V18 nucleon-nucleon potential supplemented with the Urbana IX three-nucleon force. Explicit expressions of the cross section per unit volume for the scattering of a neutrino with a spin up or spin down neutron are derived from the Fermi Golden rule. Our results show that the mean free path depends strongly on the angle of the incoming neutrino, leading to an asymmetry in this quantity. This asymmetry depends on the magnetic field intensity and on the density, but it is rather independent of the temperature. For a density of 0.16 fm −3 at a temperature T= 30MeV, the asymmetry in the mean free path is found to be of ∼ 15% for B=10 18 G and ∼ 38% for B=2.5 × 10 18 G.

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“…One is the effect of the magnetic field on the oscillation of the neutrinos [27]. The second source of asymmetry are the parity violation reactions which take place inside the neutron star [28][29][30][31][32][33][34][35][36][37][38][39]. This last approach is the one that we adopt in this work.…”

Section: Introductionmentioning

confidence: 99%

Asymmetry of the neutrino mean free path in partially spin polarized neutron matter within the Skyrme model

Bauer,

Patiño

2020

Preprint

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The asymmetry in the neutrino mean free path for the absorption reaction ν + n → e − + p, is evaluated within hot neutron matter under a strong magnetic field. We consider densities in the range 0.05 ≤ ρ ≤ 0.4 fm −3 , several temperatures up to 30 MeV and magnetic field strengths from B = 0 up to B = 10 18 G. Polarized neutron matter is described within the non-relativistic Hartree-Fock model using the LNS Skyrme interaction. The neutrino mean free path has a weak dependence with the temperature and in the strong magnetic field region, it decreases for growing values of it. This contrast with the scattering reaction ν + n → ν ′ + n ′ , where the average mean free path is almost independent of the magnetic field and has a strong dependence with the temperature. We have evaluated the asymmetry from both the absorption and scattering reactions.Our results shows that the total asymmetry depends on the magnetic field intensity, the density and the temperature. For a density of 0.16 fm −3 and for a magnetic field strength of B=10 17 G, the asymmetry in the mean free path is found to be, ∼ 9% and ∼ 3.4% for temperatures of T= 15 and 30 MeV, respectively. While the same set of asymmetries for B=10 18 G, is ∼ 58% and ∼ 48%.

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Asymmetry of neutrino emission from neutron beta decay in superdense matter and a strong magnetic field

Cited by 6 publications

References 16 publications

Neutrino electromagnetic interactions: A window to new physics

Neutrino electromagnetic interactions: A window to new physics

Asymmetry of the neutrino mean free path in hot neutron matter under strong magnetic fields

Asymmetry of the neutrino mean free path in partially spin polarized neutron matter within the Skyrme model

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