Direct Detection of Vector Dark Matter
Junji Hisano, Koji Ishiwata, Natsumi Nagata, Masato Yamanaka
TL;DR
This paper derives comprehensive formulas for the elastic scattering cross section of vector dark matter with nucleons, enhancing the accuracy of direct detection predictions, especially for Kaluza-Klein photon scenarios.
Contribution
It provides the complete leading-order cross section formulas for vector dark matter-nucleon interactions, including an application to Kaluza-Klein photon detection in extra dimension models.
Findings
Cross section is up to ten times larger than previous estimates.
Formulas enable more accurate predictions for vector dark matter detection.
Application to Kaluza-Klein photon shows increased detection prospects.
Abstract
In this paper we complete formulae for the elastic cross section of general vector dark matter with nucleon in the direct detection at the leading order of the strong coupling constant, assuming that the dark matter is composed of vector particles. As an application of our formulae, the direct detection of the first Kaluza-Klein photon in the minimal universal extra dimension model is discussed. It is found that the cross section is larger than those in the previous works by up to a factor of ten.
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