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

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 MGUT are related by yt:yb:yτ=|1+C|:|1-C|:|1+3C|. In contrast to earlier studies which focused on universal gaugino masses, we consider non-universal gaugino masses at MGUT 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.
Authors:
 [1] ;  [2] ;  [3]
  1. Univ. of Delaware, Newark, DE (United States)
  2. Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation)
  3. Uludag Univ., Bursa (Turkey)
Publication Date:
Grant/Contract Number:
SC0013880
Type:
Published Article
Journal Name:
Nuclear Physics. B
Additional Journal Information:
Journal Volume: 900; Journal Issue: C; Journal ID: ISSN 0550-3213
Publisher:
Elsevier
Research Org:
Univ. of Delaware, Newark, DE (United States). Department of Physics and Astronomy
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1225099
Alternate Identifier(s):
OSTI ID: 1239824