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Precise Determination of the unperturbed 8B neutrino spectrum

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Roger, T., Buscher, J., Bastin, B., Kirsebom, O. S., Raabe, R., Alcorta, M., . . . Wilschut, H. W. (2012). Precise Determination of the unperturbed 8B neutrino spectrum. Physical Review Letters, 108 (16), 162502. doi:10.1103/PhysRevLett.108.162502
Published in
Physical Review Letters
Authors
Roger, T. |
Buscher, J. |
Bastin, B. |
Kirsebom, O.S. |
Raabe, R. |
Alcorta, M. |
Äystö, Juha |
Borge, M.J.G. |
Carmona-Gallardo, M. |
Cocolios, T.E. |
Cruz, J. |
Dendooven, Peter |
Fraile, L.M. |
Fynbo, H.O.U. |
Galaviz, D. |
Gasques, L.R. |
Giri, G.S. |
Huyse, M. |
Hyldegaard, S. |
Jungmann, K. |
Kruithof, W.L. |
Lantz, M. |
Perea, A. |
Riisager, Karsten |
Saastamoinen, Antti |
Santra, B. |
Shidling, P.D. |
Sohani, M. |
Sorensen, A.J. |
Tengblad, O. |
Traykov, E. |
van der Hoek, D.J. |
Van Duppen, P. |
Versolato, O.O. |
Wilschut, H.W.
Date
2012
Discipline
Fysiikka
Copyright
© 2012 American Physical Society. Published in this repository with the kind permission of the publisher.

 
A measurement of the final state distribution of the 8B decay, obtained by implanting a 8B beam in a double-sided silicon strip detector, is reported here. The present spectrum is consistent with a recent independent precise measurement performed by our collaboration at the IGISOL facility, Jyva¨skyla¨ [O. S. Kirsebom et al., Phys. Rev. C 83, 065802 (2011)]. It shows discrepancies with previously measured spectra, leading to differences in the derived neutrino spectrum. Thanks to a low detection threshold, the neutrino spectrum is for the first time directly extracted from the measured final state distribution, thus avoiding the uncertainties related to the extrapolation of R-matrix fits. Combined with the IGISOL data, this leads to an improvement of the overall errors and the extension of the neutrino spectrum at high energy. The new unperturbed neutrino spectrum represents a benchmark for future measurements of the solar neutrino flux as a function of energy.
Publisher
American Physical Society
ISSN Search the Publication Forum
0031-9007
Keywords
Ydinfysiikka ydinrakenne ydinspektroskopia kiihdytinpohjainen fysiikka Nuclear physics nuclear structure nuclear spectroscopy accelerator-based physics
DOI
10.1103/PhysRevLett.108.162502
URI

http://urn.fi/URN:NBN:fi:jyu-201601191140

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