An elusive vector dark matter

Chuan Ren Chen*, Yu Kuang Chu, Ho Chin Tsai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Even though the sensitivity of direct dark matter search experiments reaches the level of about 10-45cm2, no confident signal of dark matter has been observed. We point out that, if dark matter is a vector boson, the null result in direct dark matter search experiments may be due to the destructive effects in dark-matter-nucleon elastic scattering. We illustrate the scenario using a modified Higgs portal model that includes exotic quarks. The significant cancellation can occur for a certain mass gap between new heavy quark and dark matter. As a result, the spin-independent dark-matter-nucleon elastic scattering is so suppressed that the future direct search experiments will hardly observe the signal of dark matter.

Original languageEnglish
Pages (from-to)205-209
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publication statusPublished - 2015 Feb 4

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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