skip to main content

DOE PAGESDOE PAGES

Title: MSSM A-funnel and the galactic center excess: prospects for the LHC and direct detection experiments

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 ≲ 40 GeV dark matter particle, has more recently been shown to be compatible with significantly heavier masses following reanalysis of the background.For this study, 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 β at the LHC and spin-independent cross sections ≈ 10-11 pb at direct detection experiments. Finally, 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.
Authors:
 [1] ;  [2] ;  [3] ;  [2]
  1. Nordita (Nordic Institute for Theoretical Physics), KTH Royal Institute of Technology and Stockholm University, Stockholm (Sweden); Univ. of Michigan, Ann Arbor, MI (United States); Stockholm Univ. (Sweden)
  2. Univ. of Michigan, Ann Arbor, MI (United States)
  3. Univ. of Michigan, Ann Arbor, MI (United States) ; Wayne State Univ., Detroit, MI (United States)
Publication Date:
OSTI Identifier:
1327011
Grant/Contract Number:
SC0007859
Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 4; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Research Org:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Supersymmetry; Phenomenology