Phys. Rev. Lett. 64, 2856–2858 (1990)New bound on neutrino dipole moments from globular-cluster starsReceived 19 January 1990; published in the issue dated 11 June 1990 Neutrino dipole moments μν would increase the core mass of red giants at the helium flash by δMC=0.015M⊙μν/10-12μB (where μB 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 Lyrae luminosities yield δMC=(0.009±0.012)M⊙ so that conservatively μν<3×10-12μB. © 1990 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.64.2856
DOI:
10.1103/PhysRevLett.64.2856
PACS:
95.30.Cq, 14.60.Gh, 97.10.Cv, 97.20.Li
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.