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

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [3]
  1. Stockholm Univ. (Sweden); KTH Royal Inst. of Technology, Stockholm (Sweden)
  2. Wayne State Univ., Detroit, MI (United States)
  3. Stockholm Univ. (Sweden); KTH Royal Inst. of Technology, Stockholm (Sweden); Univ. of Michigan, Ann Arbor, MI (United States)
+ Show Author Affiliations

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.

Research Organization:
Wayne State Univ., Detroit, MI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); Swedish Research Council (SRC)
Grant/Contract Number:
SC0007983; SC007859; PHY-1607611
OSTI ID:
1611002
Journal Information:
Journal of High Energy Physics (Online), Vol. 2019, Issue 4; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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Cited By (3)

Revisiting singlino dark matter of the natural Z3-symmetric NMSSM in the light of LHC journal September 2019
Return of the WIMP: Missing energy signals and the Galactic Center excess journal September 2019
The Return of the WIMP: Missing Energy Signals and the Galactic Center Excess text January 2019

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Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
Supersymmetry Phenomenology