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Dark Matter Internal Pair Production: A Novel Direct Detection Mechanism.

Bhaskar Dutta1, Aparajitha Karthikeyan1, Mudit Rai1

  • 1Texas A&M University, Department of Physics and Astronomy, College Station, Texas 77845, USA.

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We introduce dark matter internal pair production (DIPP), a novel method for detecting dark matter at particle accelerators. This process produces unique lepton pairs, offering a clear signal distinct from background noise.

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Area of Science:

  • Particle Physics
  • Cosmology
  • Astrophysics

Background:

  • Dark matter remains undetected, necessitating new detection strategies.
  • Existing detection methods have limitations in probing certain dark matter models.

Purpose of the Study:

  • Introduce and validate dark matter internal pair production (DIPP) as a novel detection mechanism.
  • Assess the efficacy of DIPP at beam dump facilities like DarkQuest, SBND, and DUNE ND.

Main Methods:

  • Simulate dark matter scattering via virtual photon exchange, producing lepton-antilepton pairs.
  • Analyze electron-positron and muon-antimuon signatures from DIPP.
  • Compare DIPP sensitivity with existing recoil-based limits.

Main Results:

  • DIPP is highly effective for probing dark matter models, especially at DUNE ND and DarkQuest.
  • DIPP sensitivity at DUNE ND surpasses existing limits from electron and nuclear recoil.
  • The mechanism is versatile, probing various dark matter models with different final states.

Conclusions:

  • DIPP offers a powerful new avenue for dark matter detection at beam dump experiments.
  • This mechanism provides enhanced sensitivity for specific dark matter candidates and couplings.
  • Future experiments can leverage DIPP to explore a broader parameter space of dark matter.