Astrophysical bounds on the masses of axions and Higgs particles

Details Astrophysical bounds on the masses of axions and Higgs particles Astrophysical bounds on the masses of axions and Higgs particles

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978stin...7913970d&link_type=abstract

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Astronomy and Astrophysics

Astrophysics

Astrophysics, Particle Mass, Deuterium Plasma, Microwave Emission, Photons, Stellar Evolution

Scientific paper

Lower bounds on the mass of a light scalar (Higgs) or pseudoscalar (axion) are found in three ways: (1) by requiring that their effect on primordial nucleosynthesis not yield a deuterium abundance outside present experimental limits; (2) by requiring that the photons from their decay thermalize and not distort the microwave background; (3) by requiring that their emission from helium burning stars (red giants) not disrupt stellar evolution. The best bound is from (3); it requires the axion or Higgs mass to be greater than 0.2 MeV.

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