Global fits of the nonuniversal Higgs model
File(s)
Accepted version
Author(s)
Roszkowski, L
Ruiz de Austri, R
Trotta, R
Tsai, Y-LS
Varley, TA
Type
Journal Article
Abstract
We carry out global fits to the nonuniversal Higgs Model (NUHM), applying all relevant present-day constraints. We present global probability maps for the NUHM parameters and observables (including collider signatures, direct, and indirect detection quantities), both in terms of posterior probabilities and in
terms of profile likelihood maps. We identify regions of the parameter space where the neutralino dark matter in the model is either binolike, or else higgsinolike with mass close to 1 TeV and a spinindependent
scattering cross section ˜10¯⁹–10¯⁸ pb. We trace the occurrence of the higgsinolike region to be a consequence of a mild focusing effect in the running of one of the Higgs masses, the existence of which in the NUHM we identify in our analysis. Although the usual binolike neutralino is more prominent, higgsinolike dark matter cannot be excluded, however its significance strongly depends on the prior and statistics used to assess it. We note that, despite experimental constraints often favoring different regions of parameter space to the constrained minimal supersymmetric standard model, most
observational consequences appear fairly similar, which will make it challenging to distinguish the two models experimentally.
terms of profile likelihood maps. We identify regions of the parameter space where the neutralino dark matter in the model is either binolike, or else higgsinolike with mass close to 1 TeV and a spinindependent
scattering cross section ˜10¯⁹–10¯⁸ pb. We trace the occurrence of the higgsinolike region to be a consequence of a mild focusing effect in the running of one of the Higgs masses, the existence of which in the NUHM we identify in our analysis. Although the usual binolike neutralino is more prominent, higgsinolike dark matter cannot be excluded, however its significance strongly depends on the prior and statistics used to assess it. We note that, despite experimental constraints often favoring different regions of parameter space to the constrained minimal supersymmetric standard model, most
observational consequences appear fairly similar, which will make it challenging to distinguish the two models experimentally.
Date Issued
2011-01-25
Date Acceptance
2010-07-29
Citation
Physical Reveiw D, 2011, 83 (1)
ISSN
1550-7998
Publisher
American Physical Society
Journal / Book Title
Physical Reveiw D
Volume
83
Issue
1
Copyright Statement
© 2011 American Physical Society
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000286765800007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
Supersymmetric dark-matter
Standard model
Bayesian-inference
Particle physics
MSSM
Scattering
Positrons
Cosmology
Electrons
Nuclear & Particles Physics
Astronomical And Space Sciences
Atomic, Molecular, Nuclear, Particle And Plasma Physics
Quantum Physics
Publication Status
Published
Article Number
ARTN 015014