Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8191438 | Physics Letters B | 2011 | 5 Pages |
Abstract
A 71Ga(3He,ât)71Ge charge-exchange experiment was performed to extract with high precision the Gamow-Teller (GT) transition strengths to the three lowest-lying states in 71Ge, i.e., the ground state (1/2â), the 175 keV (5/2â) and the 500 keV (3/2â) excited states. These are the relevant states, which are populated via a charged-current reaction induced by neutrinos from reactor-produced 51Cr and 37Ar 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 51Cr and 37Ar neutrino calibration sources, which has recently spawned new ideas about unconventional neutrino properties.
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Authors
D. Frekers, H. Ejiri, H. Akimune, T. Adachi, B. Bilgier, B.A. Brown, B.T. Cleveland, H. Fujita, Y. Fujita, M. Fujiwara, E. GanioÄlu, V.N. Gavrin, E.-W. Grewe, C.J. Guess, M.N. Harakeh, K. Hatanaka, R. Hodak, M. Holl, R.G.T. Zegers,