In the multi-component dark matter (DM) framework, DM-DM conversion has an important role in DM phenomenology. Depending on its conversion rate and its visible connection, we might be able to reach different kinds of multipartite thermal DM scenarios. Here, we show the dynamics of DM \(\mathrm{(DM_1)}\) , which has a feeble visible connection with the visible sector, in the presence of any thermal DM \((\mathrm{DM_2})\) . We propose to classify this new kind of DM as pseudo-FIMP (pFIMP) which has unique characteristics impacting the relic density, direct, and collider search implications. We studied it in a model-independent manner by solving coupled Boltzmann Equations (cBEQ) and also for a toy model with two-component real scalar DM.

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A Real Scalar Singlet Pseudo-FIMP in Presence of a Real Scalar WIMP

  • Dipankar Pradhan,
  • Subhaditya Bhattacharya,
  • Jayita Lahiri

摘要

In the multi-component dark matter (DM) framework, DM-DM conversion has an important role in DM phenomenology. Depending on its conversion rate and its visible connection, we might be able to reach different kinds of multipartite thermal DM scenarios. Here, we show the dynamics of DM \(\mathrm{(DM_1)}\) , which has a feeble visible connection with the visible sector, in the presence of any thermal DM \((\mathrm{DM_2})\) . We propose to classify this new kind of DM as pseudo-FIMP (pFIMP) which has unique characteristics impacting the relic density, direct, and collider search implications. We studied it in a model-independent manner by solving coupled Boltzmann Equations (cBEQ) and also for a toy model with two-component real scalar DM.