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New bound on neutrino dipole moments from globular-cluster starsNeutrino dipole moments mu(nu) would increase the core mass of red giants at the helium flash by delta(Mc) = 0.015 solar mass x mu(nu)/10 to the -12th muB (where muB is the Bohr magneton) because of enhanced neutrino losses. Existing measurements of the bolometric magnitudes of the brightest red giants in 26 globular clusters, number counts of horizontal-branch stars and red giants in 15 globular clusters, and statistical parallax determinations of field RR Lyr luminosities yield delta(Mc) = 0.009 + or - 0.012 solar mass, so that conservatively mu(nu) is less than 3 x 10 to the -12th muB.
Document ID
19900049627
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Raffelt, Georg G.
(Max-Planck-Institut fuer Physik und Astrophysik Munich, Federal Republic of Germany, United States)
Date Acquired
August 14, 2013
Publication Date
June 11, 1990
Publication Information
Publication: Physical Review Letters
Volume: 64
ISSN: 0031-9007
Subject Category
Astrophysics
Accession Number
90A36682
Distribution Limits
Public
Copyright
Other

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