Neutralino dark matter and other LHC predictions from quasi Yukawa unification

Shafi, Qaisar; Tanyıldızı, Şükrü Hanif; Ün, Cem Salih

doi:10.1016/j.nuclphysb.2015.09.019

Title: Neutralino dark matter and other LHC predictions from quasi Yukawa unification

Journal Article · Sun Nov 01 00:00:00 EDT 2015 · Nuclear Physics. B

DOI:https://doi.org/10.1016/j.nuclphysb.2015.09.019· OSTI ID:1225099

Shafi, Qaisar; Tanyıldızı, Şükrü Hanif; Ün, Cem Salih

We explore the dark matter and LHC implications of t-b-τt-b-τ quasi Yukawa unification in the framework of supersymmetric models based on the gauge symmetry G=SU(4)_c×SU(2)_L×SU(2)_R. The deviation from exact Yukawa unification is quantified by a dimensionless parameter C (|C|≲0.2|C|≲0.2), such that the Yukawa couplings at M_GUT are related by y_t:y_b:y_τ=|1+C|:|1-C|:|1+3C|. In contrast to earlier studies which focused on universal gaugino masses, we consider non-universal gaugino masses at M_GUT that are compatible with the gauge symmetry G. Our results reveal a variety of neutralino dark matter scenarios consistent with the observations. These include stau and chargino coannihilation scenarios, the A -resonance scenario, as well as Higgsino dark matter solutions which are more readily probed by direct detection searches. The gluino mass is found to be ≲4 TeV≲4 TeV, the stop mass is ≳2 TeV≳2 TeV, while the first two family squarks and sleptons are of order 4–5 TeV and 3 TeV respectively.

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Research Organization:: Univ. of Delaware, Newark, DE (United States). Department of Physics and Astronomy

Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0013880

OSTI ID:: 1225099

Alternate ID(s):: OSTI ID: 1239824

Journal Information:: Nuclear Physics. B, Journal Name: Nuclear Physics. B Vol. 900 Journal Issue: C; ISSN 0550-3213

Publisher:: ElsevierCopyright Statement

Country of Publication:: Netherlands

Language:: English

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Cited by: 14 works

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