Shell-model computed cross sections for charged-current scattering of astrophysical neutrinos off 40Ar
Kostensalo, J., Suhonen, J., & Zuber, K. (2018). Shell-model computed cross sections for charged-current scattering of astrophysical neutrinos off 40Ar. Physical Review C, 97(3), Article 034309. https://doi.org/10.1103/PhysRevC.97.034309
Julkaistu sarjassa
Physical Review CPäivämäärä
2018Tekijänoikeudet
© 2018 American Physical Society. Published in this repository with the kind permission of the publisher.
Charged-current (anti)neutrino-
40
Ar
cross sections for astrophysical neutrinos have been calculated. The initial and final nuclear states were calculated using the nuclear shell model. The folded solar-neutrino scattering cross section was found to be
1.78
(
23
)
×
10
−
42
cm
2
, which is higher than what the previous papers have reported. The contributions from the
1
−
and
2
−
multipoles were found to be significant at supernova-neutrino energies, confirming the random-phase approximation (RPA) result of a previous study. The effects of neutrino flavor conversions in dense stellar matter (matter oscillations) were found to enhance the neutrino-scattering cross sections significantly for both the normal and inverted mass hierarchies. For the antineutrino scattering, only a small difference between the nonoscillating and inverted-hierarchy cross sections was found, while the normal-hierarchy cross section was 2–3 times larger than that of the nonoscillating cross section, depending on the adopted parametrization of the Fermi-Dirac distribution. This property of the supernova-antineutrino signal could probably be used to distinguish between the two hierarchies in megaton LAr detectors.
...
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American Physical SocietyISSN Hae Julkaisufoorumista
2469-9985Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/27937759
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