2002/04/16 by R. Arnowitt, B. Dutta, Arnowitt, R. +1
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #astro-ph #hep-ex #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0204187
15 pages, latex, 10 figures, invited talk at DARK 2002, Cape Town, South Africa, February 4-9, 2002
arxiv created 2002/04/16 · arxiv updated 2009/11/30
We examine supergravity models with grand unification at MG possessing R parity invariance. Current data has begun to significantly constrain the parameter space. Thus for mSUGRA, accelerator data places a lower bound on m1/2 of m1/2 >~300 GeV while astronomical data on the amount of relic dark matter narrowly determines m0 in terms of m1/2 (for fixed value of tanbeta and A0) due to co-annihilation effects. Additional new data could fix the parameters further. Thus the parameter space is sensitive to the muon magnetic moment anomaly, δaμ, and if δaμlies 1 σabove its current central value, it would exclude mSUGRA, while if it lies 1σbelow (but is still positive) it pushes the SUSY spectrum into the TeV domain. The Bs ->μ+ μ- decay is seen to be accessible to the Tevatron RunII with branching ratio sensitivity of Br[Bs ->μ+ μ-] > 6.5×10-9 with 15 fb-1/detector, and a value of 7(14)×10-8 obtainable with 2 fb-1 would be sufficient to exclude mSUGRA for tan beta < 50(55). Measurements of Bs ->μ+ μ- can cover the full mSUGRA parameter space for tanbeta > 40 if δaμ> 11×10-10, and combined measurements of Bs -> μ+ μ-, aμand mh (or alternately the gluino mass) would effectively determine the mSUGRA parameters for μ> 0. Detector cross sections are then within the range of planned future dark matter experiments. Non-universal models are also discussed, and it is seen that detector cross sections there can be much larger, and can be in the DAMA data region.