Charginos and neutralinos in the light of radiative corrections: Sealing the fate of Higgsino dark matter
Journal Article
·
· Physical Review, D
- TH Division, CERN, Geneva (Switzerland)
- Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)
- Max-Planck-Institut fuer Physik, Munich (Germany)
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (United States)
- PPE Division, CERN, Geneva (Switzerland)
We analyze the CERN LEP constraints from searches for charginos {chi}{sup {plus_minus}} and neutralinos {chi}{sub i}, taking into account radiative corrections to the relations between their masses and the underlying Higgs-mixing and gaugino-mass parameters {mu}, m{sub 1/2}, and the trilinear mass parameter A{sub t}. While radiative corrections do not alter the excluded domain in m{sub {chi}{sup {plus_minus}}} as a function of m{sub {chi}{sup {plus_minus}}}{minus}m{sub {chi}}, its mapping into the {mu}, m{sub 1/2} plane is altered. We update our previous lower limits on the mass of gaugino dark matter and on tanthinsp{beta}, the ratio of Higgs vacuum expectation values, in light of the latest LEP data and these radiative corrections. We also discuss the viability of Higgsino dark matter, incorporating coannihilation effects into the calculation of the Higgsino relic abundance. We find that Higgsino dark matter is viable for only a very limited range of {mu} and m{sub 1/2}, which will be explored completely by upcoming LEP runs. {copyright} {ital 1998} {ital The American Physical Society}
- OSTI ID:
- 662361
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 58; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Supersymmetric dark matter in the light of CERN LEP and the Fermilab Tevatron collider
Measuring SUSY parameters at CERN LEP II using chargino production and decay
Neutralino dark matter in BMSSM effective theory
Journal Article
·
Sun Oct 01 00:00:00 EDT 2000
· Physical Review. D, Particles Fields
·
OSTI ID:20217744
Measuring SUSY parameters at CERN LEP II using chargino production and decay
Journal Article
·
Fri Jan 31 23:00:00 EST 1997
· Physical Review, D
·
OSTI ID:450541
Neutralino dark matter in BMSSM effective theory
Journal Article
·
Sat Aug 01 00:00:00 EDT 2009
· Journal of Cosmology and Astroparticle Physics
·
OSTI ID:22273243