Shell-model calculations of solar neutrino absorption cross sections for Ar-40, the proposed component of the ICARUS detector, are presented. It is found that low-lying Gamow-Teller transitions lead to a significant enhancement of the absorption rate over that expected from the Fermi transition between the isobaric analog states, leading to an overall absorption cross section for B-8 neutrinos of (11.5 +/- 0.7) x 10(-43) Cm-2 or a total expected rate of 6.7 + 2.5 SNU. We also note that the pertinent Gamow-Teller transitions in Ar-40, experimentally accessible from the P-decay of the mirror nucleus Ti-40. Predictions for the branching ratios to states in (SC)-S-40 are presented, and the theoretical halflife of 55 +/- 5 ms is found to be in good agreement with the experimental value of 56(-12)(+18) ms.

Neutrino capture cross sections for 40Ar and β-decay of 40Ti / W. Ormand, P. Pizzochero, P. Bortignon, R. Broglia. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 345:4(1995), pp. 343-350. [10.1016/0370-2693(94)01605-C]

Neutrino capture cross sections for 40Ar and β-decay of 40Ti

P. PIZZOCHERO;P. BORTIGNON;R. BROGLIA
1995

Abstract

Shell-model calculations of solar neutrino absorption cross sections for Ar-40, the proposed component of the ICARUS detector, are presented. It is found that low-lying Gamow-Teller transitions lead to a significant enhancement of the absorption rate over that expected from the Fermi transition between the isobaric analog states, leading to an overall absorption cross section for B-8 neutrinos of (11.5 +/- 0.7) x 10(-43) Cm-2 or a total expected rate of 6.7 + 2.5 SNU. We also note that the pertinent Gamow-Teller transitions in Ar-40, experimentally accessible from the P-decay of the mirror nucleus Ti-40. Predictions for the branching ratios to states in (SC)-S-40 are presented, and the theoretical halflife of 55 +/- 5 ms is found to be in good agreement with the experimental value of 56(-12)(+18) ms.
Settore FIS/04 - Fisica Nucleare e Subnucleare
Article (author)
File in questo prodotto:
File Dimensione Formato  
1-s2.0-037026939401605C-main.pdf

accesso aperto

Tipologia: Publisher's version/PDF
Dimensione 722.21 kB
Formato Adobe PDF
722.21 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/741551
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 49
  • ???jsp.display-item.citation.isi??? 47
social impact