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Complementarity of Gamma-ray and LHC Searches for Neutralino Dark Matter in the Focus Point Region
Moulin E., Jacholkowska A., Moultaka G., Kneur J.-L., Nuss E. et al
Physical Review D 77/6 (2008) 055014 - http://hal.in2p3.fr/in2p3-00252151
Physique/Physique des Hautes Energies - Phénoménologie
Planète et Univers/Astrophysique
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique
Complementarity of Gamma-ray and LHC Searches for Neutralino Dark Matter in the Focus Point Region
E. Moulin1, A. Jacholkowska1, G. Moultaka1, J. -L. Kneur1, E. Nuss1, T. Lari, G. Polesello, D. Tovey, M. White, Z. Yang
1 :  LPTA - Laboratoire de Physique Théorique et Astroparticules
CNRS : UMR5207 – IN2P3 – Université Montpellier II - Sciences et techniques
Bât 13- 1er Et. - CC 070 Place Eugène Bataillon 34095 MONTPELLIER CEDEX 5
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 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 ~ 20 GeV is investigated. We show that the detection of gamma-ray fluxes of O(10^-12) cm-2s-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 NLSP 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.

Articles dans des revues avec comité de lecture
Physical Review D (Phys. Rev. D)
Publisher American Physical Society
ISSN 1550-7998 (eISSN : 1550-2368)

11 pages, 6 figures, accepted for publication in Phys. Rev. D on February 7, 2008 (slight modifications: references updated and text improved)
dark matter – supersymmetry – cherenkov telecscopes – LHC physics
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