Stop co-annihilation in the minimal supersymmetric standard model revisited

Pierce, Aaron; Shah, Nausheen R.; Vogl, Stefan

doi:10.1103/PhysRevD.97.023008

Title: Stop co-annihilation in the minimal supersymmetric standard model revisited

Journal Article · Tue Jan 16 00:00:00 EST 2018 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.97.023008· OSTI ID:1417071

Pierce, Aaron; Shah, Nausheen R.; Vogl, Stefan

We reexamine the stop co-annihilation scenario of the minimal supersymmetric standard model, wherein a binolike lightest supersymmetric particle has a thermal relic density set by co-annihilations with a scalar partner of the top quark in the early universe. We concentrate on the case where only the top partner sector is relevant for the cosmology, and other particles are heavy. We discuss the cosmology with focus on low energy parameters and an emphasis on the implications of the measured Higgs boson mass and its properties. We find that the irreducible direct detection signal correlated with this cosmology is generically well below projected experimental sensitivity, and in most cases lies below the neutrino background. A larger, detectable, direct detection rate is possible, but is unrelated to the co-annihilation cosmology. LHC searches for compressed spectra are crucial for probing this scenario

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Research Organization:: Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0007859

OSTI ID:: 1417071

Alternate ID(s):: OSTI ID: 1498900

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Vol. 97 Journal Issue: 2; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 13 works

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Title: Stop co-annihilation in the minimal supersymmetric standard model revisited

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