Author:
Zhang Kai-Yu,Feng Wan-Zhe
Abstract
Abstract
The W boson mass recently reported by the CDF collaboration shows a deviation from the standard model prediction with an excess at the
level. We investigate two simple extensions of the standard model with an extra
dark sector. One is the
extension, where the
gauge field mixes with the standard model through gauge kinetic terms. The other is a general
extension of the standard model. Fitting various experimental constraints, we find that the
extension with only kinetic mixing can enhance the W boson mass by 10 MeV at most. The
extension can easily generate a 77 MeV enhancement of the W boson mass and also offer a viable dark matter candidate with a mass ranging from several hundred GeV to TeV, which may be detected by future dark matter direct detection experiments with improved sensitivities.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Tianjin City
Subject
Astronomy and Astrophysics,Instrumentation,Nuclear and High Energy Physics
Cited by
8 articles.
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