Precise Determination of the Unperturbed 8B Neutrino Spectrum

T. Roger; J. Büscher; B. Bastin; O.S. Kirsebom; R. Raabe; M. Alcorta; J. Äystö; M.J.G. Borge; M. Carmona-Gallardo; T.E. Cocolios; J. Cruz; P. Dendooven; L.M. Fraile; H. O. U. Fynbo; D. Galaviz; L.R. Gasques; G.S. Giri; M. Huyse; S. Hyldegaard; K. Jungmann; W.L. Kruithof; M. Lantz; A. Perea; K. Riisager; A. Saastamoinen; B. Santra; P.D. Shidling; M. Sohani; A.J. Sørensen; O. Tengblad; E. Traykov; D.J. van Der Hoek; P. van Duppen; O.O. Versolato; H.W. Wilschut

doi:10.1103/PhysRevLett.108.162502

Journal Articles Physical Review Letters Year : 2012

Precise Determination of the Unperturbed 8B Neutrino Spectrum

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T. Roger

Function : Author
PersonId : 738433
IdHAL : thomas-roger
ORCID : 0000-0003-4646-5076

Grand Accélérateur National d'Ions Lourds

J. Büscher

Function : Author

B. Bastin

Function : Author
PersonId : 738704
IdHAL : beyhan-bastin
ORCID : 0000-0001-5959-0875
IdRef : 123532752

Grand Accélérateur National d'Ions Lourds

O.S. Kirsebom

Function : Author

R. Raabe

Function : Author

Grand Accélérateur National d'Ions Lourds

M. Alcorta

Function : Author

J. Äystö

Function : Author

M.J.G. Borge

Function : Author

M. Carmona-Gallardo

Function : Author

T.E. Cocolios

Function : Author

J. Cruz

Function : Author

P. Dendooven

Function : Author

L.M. Fraile

Function : Author

H. O. U. Fynbo

Function : Author

D. Galaviz

Function : Author

L.R. Gasques

Function : Author

G.S. Giri

Function : Author

M. Huyse

Function : Author

S. Hyldegaard

Function : Author

K. Jungmann

Function : Author

W.L. Kruithof

Function : Author

M. Lantz

Function : Author

A. Perea

Function : Author

K. Riisager

Function : Author

A. Saastamoinen

Function : Author

B. Santra

Function : Author

P.D. Shidling

Function : Author

M. Sohani

Function : Author

A.J. Sørensen

Function : Author

O. Tengblad

Function : Author

E. Traykov

Function : Author

D.J. van Der Hoek

Function : Author

P. van Duppen

Function : Author

O.O. Versolato

Function : Author

H.W. Wilschut

Function : Author

Abstract

A measurement of the final state distribution of the 8B $\beta$ 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, Jyvâskylä [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.

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Nuclear Experiment [nucl-ex]

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https://in2p3.hal.science/in2p3-00690984

Submitted on : Wednesday, April 25, 2012-9:14:10 AM

Last modification on : Thursday, April 11, 2024-1:18:12 PM

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in2p3-00690984 , version 1 (25-04-2012)

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HAL Id : in2p3-00690984 , version 1
DOI : 10.1103/PhysRevLett.108.162502

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T. Roger, J. Büscher, B. Bastin, O.S. Kirsebom, R. Raabe, et al.. Precise Determination of the Unperturbed 8B Neutrino Spectrum. Physical Review Letters, 2012, 108, pp.162502. ⟨10.1103/PhysRevLett.108.162502⟩. ⟨in2p3-00690984⟩

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Precise Determination of the Unperturbed 8B Neutrino Spectrum

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