Neutral-current neutrino cross section and expected supernova signals for 40Ar from a three-fold increase in the magnetic dipole strength

W. Tornow; A.P. Tonchev; S.W. Finch; Krishichayan; X.B. Wang; A.C. Hayes; H.G.D. Yeomans; D.A. Newmark

Physics Letters B (Dec 2022)

Neutral-current neutrino cross section and expected supernova signals for 40Ar from a three-fold increase in the magnetic dipole strength

W. Tornow,
A.P. Tonchev,
S.W. Finch,
Krishichayan,
X.B. Wang,
A.C. Hayes,
H.G.D. Yeomans,
D.A. Newmark

Affiliations

W. Tornow: Department of Physics, Duke University, Durham, NC 27708-0308, USA; Triangle Universities Nuclear Laboratory, Durham, NC 27708-0308, USA
A.P. Tonchev: Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA; Department of Physics, Duke University, Durham, NC 27708-0308, USA
S.W. Finch: Department of Physics, Duke University, Durham, NC 27708-0308, USA; Triangle Universities Nuclear Laboratory, Durham, NC 27708-0308, USA; Corresponding author.
Krishichayan: Department of Physics, Duke University, Durham, NC 27708-0308, USA; Triangle Universities Nuclear Laboratory, Durham, NC 27708-0308, USA
X.B. Wang: School of Science, Huzhou University, Huzhou 313000, China
A.C. Hayes: Los Alamos National Laboratory, Los Alamos, NM 87545, USA
H.G.D. Yeomans: Los Alamos National Laboratory, Los Alamos, NM 87545, USA; Kubrick Group, London, SE1 0BE, United Kingdom
D.A. Newmark: Los Alamos National Laboratory, Los Alamos, NM 87545, USA; Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA

Journal volume & issue: Vol. 835
p. 137576

Abstract

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In view of the great interest in liquid argon neutrino detectors, the 40Ar(γ,γ′)40Ar reaction was revisited to guide a calculation of the neutral current neutrino cross section at supernova energies. Using the nuclear resonance fluorescence technique with a monoenergetic, 99% linearly polarized photon beam, we report a three-fold increase in magnetic dipole strength at around 10 MeV in 40Ar. Based on shell-model calculations, and using the experimentally identified transitions, the neutral current neutrino cross sections for low-energy reactions on 40Ar are calculated.

Published in Physics Letters B

ISSN: 0370-2693 (Print); 1873-2445 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/physics-letters-b/

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