TY - JOUR
T1 - Neutralino dark matter in focus point supersymmetry
AU - Feng, Jonathan L.
AU - Matchev, Konstantin T.
AU - Wilczek, Frank
N1 - Funding Information:
We thank M. Drees, C. Kolda, and T. Moroi for helpful conversations. We are grateful to G. Jungman for correspondence and M. Drees and T. Falk for extensive numerical comparisons that revealed a sign error in the program Neutdriver used in the first version of the paper. This work was supported in part by the Department of Energy under contracts DE–FG02–90ER40542 and DE–AC02–76CH03000, by the National Science Foundation under grant PHY–9513835. J.L.F. acknowledges the generosity of Frank and Peggy Taplin and the National Center for Theoretical Sciences and National Tsing Hua University, Taiwan for hospitality during the completion of this work. K.T.M. thanks the SLAC theory group for hospitality during the completion of this work.
PY - 2000/6/8
Y1 - 2000/6/8
N2 - In recent work, it has been argued that multi-TeV masses for scalar superpartners are not unnatural. Indeed, they appear to have significant phenomenological virtues. Here we explore the implications of such 'focus point' supersymmetry for the dark matter problem. We find that constraints on relic densities do not place upper bounds on neutralino or scalar masses. We demonstrate that, in the specific context of minimal supergravity, a cosmologically stable mixed gaugino-Higgsino state emerges as an excellent, robust dark matter candidate. We estimate that, over a wide range of the unknown parameters, the spin-independent proton-neutralino cross sections fall in the range accessible to planned search experiments. (C) 2000 Elsevier Science B.V.
AB - In recent work, it has been argued that multi-TeV masses for scalar superpartners are not unnatural. Indeed, they appear to have significant phenomenological virtues. Here we explore the implications of such 'focus point' supersymmetry for the dark matter problem. We find that constraints on relic densities do not place upper bounds on neutralino or scalar masses. We demonstrate that, in the specific context of minimal supergravity, a cosmologically stable mixed gaugino-Higgsino state emerges as an excellent, robust dark matter candidate. We estimate that, over a wide range of the unknown parameters, the spin-independent proton-neutralino cross sections fall in the range accessible to planned search experiments. (C) 2000 Elsevier Science B.V.
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U2 - 10.1016/S0370-2693(00)00512-8
DO - 10.1016/S0370-2693(00)00512-8
M3 - Article
AN - SCOPUS:0034621789
SN - 0370-2693
VL - 482
SP - 388
EP - 399
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 4
ER -