Complementarity of gamma-ray and CERN LHC searches for neutralino dark matter in the focus point region
- Laboratoire de Physique Theorique et Astroparticules, CNRS/IN2P3 et Universite, Montpellier 2, Place Eugene Bataillon, F-34095 Montpellier Cedex (France)
- INFN, Sezione di Milano, Via Celoria 16, I-20133 Milano (Italy)
- INFN, Sezione di Pavia, Via Bassi 6, I-27100 Pavia (Italy)
- Department of Physics and Astronomy, University of Sheffield, Hounsfield Road, Sheffield S3 7RH (United Kingdom)
- Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge, CB3 0HE (United Kingdom)
- Department of Physics, Carleton University, Ottawa, ON K1S 5B6 (Canada)
We study the complementarity between the indirect detection of dark matter with {gamma}-rays in H.E.S.S. and the supersymmetry searches with ATLAS at the Large Hadron Collider (LHC) in the focus point region within the mSUGRA framework. The sensitivity of the central telescope of the H.E.S.S. II experiment with an energy threshold of {approx}20 GeV is investigated. We show that the detection of {gamma}-ray fluxes of O(10{sup -12}) cm{sup -2} s{sup -1} with H.E.S.S. II covers a substantial part of the focus point region which may be more difficult for LHC experiments. Despite the presence of multi-TeV scalars, we show that LHC will be sensitive to a complementary part of this region through three-body next-to-lightest supersymmetric particle leptonic decays. This interesting complementarity between H.E.S.S. II and LHC searches is further highlighted in terms of the gluino mass and the two lightest neutralino mass difference.
- OSTI ID:
- 21249743
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 77, Issue 5; Other Information: DOI: 10.1103/PhysRevD.77.055014; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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