College Physics I – Introduction

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Axions

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College Physics I – Introduction

Definition

Axions are hypothetical elementary particles proposed as a solution to the strong CP problem in quantum chromodynamics. They are also considered potential candidates for dark matter.

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5 Must Know Facts For Your Next Test

  1. Axions were first proposed by Roberto Peccei and Helen Quinn in 1977.
  2. They interact very weakly with ordinary matter, making them difficult to detect.
  3. Axions could account for a significant portion of dark matter in the universe.
  4. Experiments such as ADMX (Axion Dark Matter Experiment) are designed to detect axions using microwave cavities.
  5. The mass of axions is still uncertain but is predicted to be extremely low, typically in the range of microelectronvolts (μeV).

Review Questions

  • What problem in quantum chromodynamics do axions aim to solve?
  • Why are axions considered potential candidates for dark matter?
  • Name one experiment designed to detect axions.
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