Neutralino relic density in supersymmetric GUTs with no-scale boundary conditions above the unification scale | Zendy

Stefano Profumo | Zendy

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Neutralino relic density in supersymmetric GUTs with no-scale boundary conditions above the unification scale

Author(s) -

Stefano Profumo

Publication year - 2003

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2003/06/052

Subject(s) - gaugino , physics , neutralino , particle physics , yukawa potential , large hadron collider , scalar (mathematics) , grand unified theory , parameter space , phenomenology (philosophy) , minimal supersymmetric standard model , unification , supersymmetry , statistics , philosophy , geometry , mathematics , epistemology , computer science , programming language

We investigate SU(5) and SO(10) GUTs with vanishing scalar masses andtrilinear scalar couplings at a scale higher than the unification scale. Theparameter space of the models, further constrained by b-\tau Yukawa couplingunification, consists of a common gaugino mass and of \tan\beta. We analyze thelow energy phenomenology, finding that A-pole annihilations of neutralinosand/or coannihilations with the lightest stau drive the relic density withinthe cosmologically preferred range in a significant region of the allowedparameter space. Implications for neutralino direct detection and for CERN LHCexperiments are also discussed.Comment: 14 pages, 5 figures, JHEP style. Version accepted for publication in JHE

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