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MSSM A-funnel and the galactic center excess: prospects for the LHC and direct detection experiments
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
2016 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 4, 059Article in journal (Refereed) Published
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Abstract [en]

The pseudoscalar resonance or "A-funnel" in the Minimal Supersymmetric Standard Model (MSSM) is a widely studied framework for explaining dark matter that can yield interesting indirect detection and collider signals. The well-known Galactic Center excess (GCE) at GeV energies in the gamma ray spectrum, consistent with annihilation of a less than or similar to 40 GeV dark matter particle, has more recently been shown to be compatible with significantly heavier masses following reanalysis of the background. In this paper, we explore the LHC and direct detection implications of interpreting the GCE in this extended mass window within the MSSM A-funnel framework. We find that compatibility with relic density, signal strength, collider constraints, and Higgs data can be simultaneously achieved with appropriate parameter choices. The compatible regions give very sharp predictions of 200-600 GeV CP-odd/even Higgs bosons at low tan beta at the LHC and spin-independent cross sections approximate to 10(-11) pb at direct detection experiments. Regardless of consistency with the GCE, this study serves as a useful template of the strong correlations between indirect, direct, and LHC signatures of the MSSM A-funnel region.

Place, publisher, year, edition, pages
Springer-Verlag New York, 2016. no 4, 059
Keyword [en]
Supersymmetry Phenomenology
National Category
Subatomic Physics Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-186624DOI: 10.1007/JHEP04(2016)059ISI: 000374045100004Scopus ID: 2-s2.0-84973889555OAI: oai:DiVA.org:kth-186624DiVA: diva2:932457
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QC 20161103

Available from: 2016-06-01 Created: 2016-05-13 Last updated: 2016-11-03Bibliographically approved

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