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<p>We discuss an extension of the standard model with a real scalar triplet, <i>T</i>, including non-renormalizable operators (NROs) up to <i>d</i> = 6. If <i>T</i> is odd under a <i>Z</i><sub>2</sub> symmetry, the neutral component of <i>T</i> is a good candidate for the dark matter (DM) of the universe. We calculate the relic density and constraints from direct and indirect detection on such a setup, concentrating on the differences with respect to the simple model for a DM <i>T</i> with only renormalizable interactions. Bosonic operators can change the relic density of the triplet drastically, opening up new parameter space for the model. Indirect detection constraints, on the other hand, rule out an interesting part of the allowed parameter space already today and future CTA data will, very likely, provide a decisive test for this setup.</p>

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Effective field theory and scalar triplet dark matter

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月16日

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  • Carolina Arbeláez,
  • Marcela González,
  • Martin Hirsch,
  • Nicolás A. Neill,
  • Diego Restrepo

摘要

We discuss an extension of the standard model with a real scalar triplet, T, including non-renormalizable operators (NROs) up to d = 6. If T is odd under a Z2 symmetry, the neutral component of T is a good candidate for the dark matter (DM) of the universe. We calculate the relic density and constraints from direct and indirect detection on such a setup, concentrating on the differences with respect to the simple model for a DM T with only renormalizable interactions. Bosonic operators can change the relic density of the triplet drastically, opening up new parameter space for the model. Indirect detection constraints, on the other hand, rule out an interesting part of the allowed parameter space already today and future CTA data will, very likely, provide a decisive test for this setup.