Limits on the Time Variation of the Fermi Constant G_F Based on Type Ia Supernova Observations

Author(s)

Alejandro Ferrero
Brett David AltschulFollow

Document Type

Article

Abstract

The light curve of a type Ia supernova decays at a rate set by the beta-decay lifetimes of the ⁵⁶N iand Co⁵⁶ produced in the explosion. This makes such a light curve sensitive to the value of the Fermi constant G_F at the time of the supernova. Using data from the CfA Supernova Archive, we measure the dependence of the light curve decay rate on redshift and place a bound on the time variation of G_F of |(dG_F/dt)/G_F| < 10^-9 / y¹.

Digital Object Identifier (DOI)

https://doi.org/10.1103/PhysRevD.82.123002

Publication Info

Published in Physical Review D, Volume 82, Issue 12, 2011.

© 2010 The American Physical Society

APA Citation

Ferrero, A., & Altschul, B. (2010). Limits on the time variation of the Fermi constantGFbased on type Ia supernova observations. Physical Review D, 82(12). https://doi.org/10.1103/physrevd.82.123002