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Titolo:
Exploration of elastic scattering rates for supersymmetric dark matter - art. no. 065016
Autore:
Ellis, J; Ferstl, A; Olive, KA;
Indirizzi:
CERN, Div TH, CH-1211 Geneva, Switzerland CERN Geneva Switzerland CH-1211 ERN, Div TH, CH-1211 Geneva, Switzerland Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA Univ Minnesota Minneapolis MN USA 55455 Astron, Minneapolis, MN 55455 USA Univ Minnesota, Inst Theoret Phys, Minneapolis, MN 55455 USA Univ Minnesota Minneapolis MN USA 55455 t Phys, Minneapolis, MN 55455 USA
Titolo Testata:
PHYSICAL REVIEW D
fascicolo: 6, volume: 6306, anno: 2001,
pagine: 5016 -
SICI:
0556-2821(20010315)6306:6<5016:EOESRF>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEUTRALINO-STAU COANNIHILATION; MINIMAL SUPERGRAVITY MODEL; NUCLEON CROSS-SECTION; CP-VIOLATING PHASES; WIMP DIRECT SEARCH; RELIC ABUNDANCE; EVENT RATES; LIGHT; CONSTRAINTS; COSMOLOGY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
62
Recensione:
Indirizzi per estratti:
Indirizzo: Ellis, J CERN, Div TH, CH-1211 Geneva, Switzerland CERN Geneva Switzerland CH-1211 TH, CH-1211 Geneva, Switzerland
Citazione:
J. Ellis et al., "Exploration of elastic scattering rates for supersymmetric dark matter - art. no. 065016", PHYS REV D, 6306(6), 2001, pp. 5016

Abstract

We explore the possible cross sections for the elastic scattering of neutralinos chi on nucleons p,n in the minimal supersymmetric extension of the standard model (MSSM). Universality of the soft supersymmetry breaking scalar masses for the Higgs multiplets is not assumed, but the MSSM parameters are nevertheless required to lead consistently to an electroweak vacuum. We explore systematically the region of MSSM parameter space where CERN LEP and other accelerator constraints are respected, and the relic neutralino density lies in the range 0.1 less than or equal to Omega (chi)h(2)less than or equal to0.3 preferred by cosmology. We also discuss models with Omega (chi)h(2)<0.1, in which case we scale the density of supersymmetric dark matter in our galactic halo by <Omega>(chi)h(2)/0.1, allowing for the possible existence of some complementary form of cold dark matter. We restrict our attention to tan beta less than or equal to 10, for which reliable relic-density calculations are available. Within this range of tan beta, we find values of the cross sections that are considerably lower than the present experimental sensitivities. At low neutralino masses, m(chi)less than or similarto 100 GeV, the cross sections may be somewhat higher than in the constrained MSSM with universal soft Higgs boson masses, though they are generally lower. In the case of large m(chi), the cross sections we find may be considerably larger than in the constrained model, but still well below the present experimental sensitivity.

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Documento generato il 04/04/20 alle ore 08:42:31