Direct detection of neutralino dark matter and the anomalons dipole momentof the muon - art. no. 115009

Citation
M. Drees et al., Direct detection of neutralino dark matter and the anomalons dipole momentof the muon - art. no. 115009, PHYS REV D, 6311(11), 2001, pp. 5009
Citations number
76
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
0556-2821 → ACNP
Volume
6311
Issue
11
Year of publication
2001
Database
ISI
SICI code
0556-2821(20010601)6311:11<5009:DDONDM>2.0.ZU;2-Y
Abstract
We compare predictions for the spin-independent contribution to the neutral ino-proton scattering cross section sigma (xp) and for the anomalous magnet ic dipole moment of the muon, a(mu)= (g(mu) - 2)/2, in models with gravity- mediated supersymmetry breaking. We nearly always find a positive correlati on between these two measurables; i.e., scenarios with larger a(mu) also te nd to have larger sigma (xp), but the detailed prediction differs greatly b etween models. Tn particular, we find that for the popular MSUGRA scenario with universal soft breaking masses at the scale of grand unification, meas urements of a(mu) currently seem more promising. On the other hand, if scal ar soft breaking masses at the GUT scale receive sizable contributions from SO(10) D terms, one often finds scenarios with large sigma (xp) but a(mu) below the currently foreseen sensitivity. A string-inspired model with a no nuniversal scalar spectrum at the GUT scale falls between these two cases.