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Electroweak Baryogenesis, Large Yukawas and Dark Matter
High Energy Physics - Phenomenology · Submitted 28 Jul 2005
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We show here that the lightest of these fermionic fields can naturally be a good candidate for cold dark matter.
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The abstract, sentence by sentence
It has been recently shown that the electroweak baryogenesis mechanism is feasible in Standard Model extensions containing extra fermions with large Yukawa couplings. We show here that the lightest of these fermionic fields can naturally be a good candidate for cold dark matter. We find regions in the parameter space where the thermal relic abundance of this particle is compatible with the dark matter density of the Universe as determined by the WMAP experiment. We study direct and indirect dark matter detection for this model and compare with current experimental limits and prospects for upcoming experiments. We find, contrary to the standard lore, that indirect detection searches are more promising than direct detection ones, and they already exclude a portion of the parameter space.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | It has been recently shown that the electroweak baryogenesis mechanism is feasible in Standard Model extensions containing extra fermions with large Yukawa couplings. | background 1.00 | 0.04 | 0.06 | asserted 0.91 |
| s1 | We show here that the lightest of these fermionic fields can naturally be a good candidate for cold dark matter. | contribution 0.53 | 0.91 | 0.52 | asserted 0.92 |
| s2 | We find regions in the parameter space where the thermal relic abundance of this particle is compatible with the dark matter density of the Universe as determined by the WMAP experiment. | result 0.99 | 0.95 | 0.13 | asserted 0.98 |
| s3 | We study direct and indirect dark matter detection for this model and compare with current experimental limits and prospects for upcoming experiments. | contribution 0.86 | 0.91 | 0.05 | asserted 0.86 |
| s4 | We find, contrary to the standard lore, that indirect detection searches are more promising than direct detection ones, and they already exclude a portion of the parameter space. | result 0.99 | 0.95 | 0.44 | asserted 1.00 |
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The paper
Original abstract
It has been recently shown that the electroweak baryogenesis mechanism is feasible in Standard Model extensions containing extra fermions with large Yukawa couplings. We show here that the lightest of these fermionic fields can naturally be a good candidate for cold dark matter. We find regions in the parameter space where the thermal relic abundance of this particle is compatible with the dark matter density of the Universe as determined by the WMAP experiment. We study direct and indirect dark matter detection for this model and compare with current experimental limits and prospects for upcoming experiments. We find, contrary to the standard lore, that indirect detection searches are more promising than direct detection ones, and they already exclude a portion of the parameter space.
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