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

Freese, Katherine; López, Alejandro; Shah, Nausheen R.; Shakya, Bibhushan

doi:10.1007/JHEP04(2016)059

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

Journal Article · Mon Apr 11 00:00:00 EDT 2016 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP04(2016)059· OSTI ID:1327011

Freese, Katherine ^[1]; López, Alejandro ^[2]; Shah, Nausheen R. ^[3]; Shakya, Bibhushan ^[2]

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)
Univ. of Michigan, Ann Arbor, MI (United States)
Univ. of Michigan, Ann Arbor, MI (United States) ; Wayne State Univ., Detroit, MI (United States)

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.

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Research Organization:: Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0007859

OSTI ID:: 1327011

Journal Information:: Journal of High Energy Physics (Online), Vol. 2016, Issue 4; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 20 works

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The Return of the WIMP: Missing Energy Signals and the Galactic Center Excess Carena, Marcela; Osborne, James; Shah, Nausheen R. arXiv https://doi.org/10.48550/arxiv.1905.03768	text	January 2019

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