A 130 GeV photon line from dark matter annihilation in the NMSSM

Journal Article · Wed Aug 01 04:00:00 EDT 2012 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2012/08/003· OSTI ID:22279856

Das, Debottam; Ellwanger, Ulrich; Mitropoulos, Pantelis ^[1]

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1. Laboratoire de Physique Théorique, UMR 8627, CNRS and Université de Paris-Sud, Bât. 210, 91405 Orsay (France)

In the Next-to-Minimal Supersymmetric Standard Model, neutralino dark matter can annihilate into a pair of photons through the exchange of a CP-odd Higgs boson in the s-channel. The CP-odd Higgs boson couples to two photons through a loop of dominantly higgsino-like charginos. We show that the parameter space of the NMSSM can accommodate simultaneously i) neutralino-like dark matter of a mass of about 130 GeV giving rise to a 130 GeV photon line; ii) an annihilation cross section of or larger than 10{sup −27} cm{sup 3} s{sup −1}; iii) a relic density in agreement with WMAP constraints; iv) a direct detection cross section compatible with bounds from XENON100, and v) a Standard Model like Higgs mass of about 125 GeV. However, the CP-odd Higgs mass has to lie accidentally close to 260 GeV.

• OSTI ID: 22279856
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 08 Vol. 2012; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ANNIHILATION
ASTROPHYSICS
COSMOLOGY
CP INVARIANCE
CROSS SECTIONS
DENSITY
GEV RANGE
HIGGS BOSONS
HIGGS MODEL
NONLUMINOUS MATTER
PHOTONS
REST MASS
S CHANNEL
SPACE
STANDARD MODEL
SUPERSYMMETRY