Mass limits on a light Higgs boson from π-, K-, η′ -meson decays in the 70 GeV proton beam-dump experiment

Abstract

Data from a 70 GeV proton-iron beam-dump experiment and the theoretical predictions of light Higgs production from the decays π ±→e ± V (∼) eH, K ±→e ± V (∼) eH, K ±→π ±H, K 0 L→π 0H, η′→η′H were used to establish limits on the mass of a scalar Higgs boson in the context of the standard model. The mass range 1< m H<72 MeV/ c 2 was excluded at 95% CL.