The 71Ga( 3He,t) reaction and the low-energy neutrino response

Author
Lennarz, A.
Hatanaka, K.
Hodak, R.
Van de Walle, J.
Zegers, R. G. T.
Holl, M.
Iwamoto, C.
Khai, N. T.
Okamoto, A.
Okamura, H.
Povinec, P. P.
Puppe, P.
Simkovic, F.
Suzuki, T.
Tamii, A.
Thies, J. H.
Frekers, D.
Ejiri, H.
Akimune, H.
Adachi, T.
Brown, B. A.
Cleveland, B. T.
Fujita, H.
Fujita, Y.
Fujiwara, M.
Gavrin, V. N.
Grewe, E. -W.
Kozer, H. C.
Ganioglu, Ela
Bilgier, B.
Susoy, Gülfem
Guess, C. J.
Harakeh, M. N.
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Abstract
A Ga-71(He-3,t)Ge-71 charge-exchange experiment was performed to extract with high precision the Gamow-Teller (GT) transition strengths to the three lowest-lying states in Ge-71, i.e., the ground state (1/2(-)), the 175 keV (5/2(-)) and the 500 key (3/2(-)) excited states. These are the relevant states, which are populated via a charged-current reaction induced by neutrinos from reactor-produced Cr-51 and Ar-37 sources. A precise measurement of the GT transition strengths is an important input into the calibration of the SAGE and GALLEX solar neutrino detectors and addresses a long-standing discrepancy between the measured and evaluated capture rates from the Cr-51 and Ar-37 neutrino calibration sources, which has recently spawned new ideas about unconventional neutrino properties. (C) 2011 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.12627/61351
https://doi.org/10.1016/j.physletb.2011.10.061
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84855192748&origin=inward
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