Toward the Direct Detection of the Dark Matter in the Universe

DOI Web Site

Bibliographic Information

Other Title
  • 宇宙のダークマター直接探索の現状
  • 交流 宇宙のダークマター直接探索の現状
  • コウリュウ ウチュウ ノ ダークマター チョクセツ タンサク ノ ゲンジョウ

Search this article

Abstract

<p>Since the first indication in 1930s, the dark matter in the universe has been studied in many ways. Astronomical observations pinned down the total amount of the dark matter in the universe and its existence is widely accepted. In spite of intensive studies of the dark matter in the theoretical and experimental ways, its nature is still unknown. Among many candidates of the dark matter, Weakly Interacting Massive Particle (WIMP) is said to be the leading candidate of the dark matter. This is because that WIMPs can not only solve the dark matter problem, but the abundance of the dark matter today can naturally be explained by so-called thermal relic scenario. In the thermal-relic scenario, the dark matter was created in the early universe and annihilated during the evolution of the universe until it is freeze-out by the expansion of the universe. WIMPs can be detected through the interaction with ordinary matters as the nuclear recoil signals in particle detectors. The dark matter search using this recoil interactions is referred to as the direct detection and many experimental efforts have been made so far. Two-phase, liquid and gas, Xenon detectors are leading the direct searches. Several-tons of these detectors are being build and first discovery of the dark matter would happen any time in a few years.</p>

Journal

  • Butsuri

    Butsuri 75 (2), 68-76, 2020-02-05

    The Physical Society of Japan

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top