The NMSSM is within reach of the LHC: mass correlations &amp; decay signatures

Baum, Sebastian; Shah, Nausheen R.; Freese, Katherine

doi:10.1007/jhep04(2019)011

The NMSSM is within reach of the LHC: mass correlations & decay signatures

Journal Article · Mon Apr 01 00:00:00 EDT 2019 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/jhep04(2019)011· OSTI ID:1611002

Baum, Sebastian ^[1]; Shah, Nausheen R. ^[2]; Freese, Katherine ^[3]

Stockholm Univ. (Sweden); KTH Royal Inst. of Technology, Stockholm (Sweden); DOE/OSTI
Wayne State Univ., Detroit, MI (United States)
Stockholm Univ. (Sweden); KTH Royal Inst. of Technology, Stockholm (Sweden); Univ. of Michigan, Ann Arbor, MI (United States)

The Next-to-Minimal Supersymmetric Standard Model (NMSSM), the singlet extension of the MSSM which fixes many of the MSSM’s shortcomings, is shown to be within reach of the upcoming runs of the Large Hadron Collider (LHC). A systematic treatment of the various Higgs decay channels and their interplay has been lacking due to the seemingly large number of free parameters in the NMSSM’s Higgs sector. We demonstrate that due to the SM-like nature of the observed Higgs boson, the NMSSM’s Higgs and neutralino sectors have highly correlated masses and couplings and can effectively be described by four physically intuitive parameters: the physical masses of the two CP-odd states and their mixing angle, and tan β, which plays a minor role. The heavy Higgs bosons in the NMSSM have large branching ratios into pairs of lighter Higgs bosons or a light Higgs and a Z boson. Search channels arising via these Higgs cascades are unique to models like the NMSSM with a Higgs sector larger than that of the MSSM. In order to cover as much of the NMSSM parameter space as possible, one must combine conventional search strategies employing decays of the additional Higgs bosons into pairs of SM particles with Higgs cascade channels. We demonstrate that such a combination would allow a significant fraction of the viable NMSSM parameter space containing additional Higgs bosons with masses below 1 TeV to be probed at future runs of the LHC.

View Accepted Manuscript (DOE)

Research Organization:: Wayne State Univ., Detroit, MI (United States)

Sponsoring Organization:: National Science Foundation (NSF); Swedish Research Council; USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Grant/Contract Number:: SC0007983

OSTI ID:: 1611002

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 4 Vol. 2019; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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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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