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Title: Light neutralino dark matter: direct/indirect detection and collider searches

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [1];  [2]
  1. Univ. of Pittsburgh, Pittsburgh, PA (United States). Dept. of Physics and Astronomy
  2. Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics

We study the neutralino being the Lightest Supersymmetric Particle (LSP) as a cold Dark Matter (DM) candidate with a mass less than 40 GeV in the framework of the Next-to-Minimal-Supersymmetric-Standard-Model (NMSSM). We find that with the current collider constraints from LEP, the Tevatron and the LHC, there are three types of light DM solutions consistent with the direct/indirect searches as well as the relic abundance considerations: (i) A 1, H 1-funnels, (ii) stau coannihilation and (iii) sbottom coannihilation. Type-(i) may take place in any theory with a light scalar (or pseudo-scalar) near the LSP pair threshold; while Type-(ii) and (iii) could occur in the framework of Minimal-Supersymmetric-Standard-Model (MSSM) as well. We present a comprehensive study on the properties of these solutions and point out their immediate relevance to the experiments of the underground direct detection such as superCDMS and LUX/LZ, and the astro-physical indirect search such as Fermi-LAT. We also find that the decays of the SM-like Higgs boson may be modified appreciably and the new decay channels to the light SUSY particles may be sizable. The new light CP-even and CP-odd Higgs bosons will decay to a pair of LSPs as well as other observable final states, leading to interesting new Higgs phenomenology at colliders. For the light sfermion searches, the signals would be very challenging to observe at the LHC given the current bounds. Furthermore, a high energy and high luminosity lepton collider, such as the ILC, would be able to fully cover these scenarios by searching for events with large missing energy plus charged tracks or displaced vertices.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE
Grant/Contract Number:
FG02-95ER40896; FG02-13ER41976
OSTI ID:
1532842
Journal Information:
Journal of High Energy Physics (Online), Vol. 2014, Issue 8; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 72 works
Citation information provided by
Web of Science

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Cited By (16)

Probing light bino and higgsinos at the LHC journal November 2017
Decays of a NMSSM CP-odd Higgs in the low-mass region journal March 2017
Towards the Final Word on Neutralino Dark Matter text January 2015
NMSSM explanations of the Galactic center gamma ray excess and promising LHC searches text January 2014
Probing light bino and higgsinos at the LHC preprint January 2014
A new approach for detecting compressed bino/wino at the LHC text January 2014
The higgsino–singlino sector of the NMSSM: combined constraints from dark matter and the LHC journal September 2018
Exotic decays of the 125 GeV Higgs boson at future e + e colliders journal June 2017
A taste of dark matter: flavour constraints on pseudoscalar mediators journal March 2015
Invisible decay of the Higgs boson in the context of a thermal and nonthermal relic in MSSM journal May 2017
Interpreting the galactic center gamma-ray excess in the NMSSM preprint January 2015
Blind spots for neutralino dark matter in the NMSSM text January 2015
Is it possible to discover a dark matter particle with an accelerator? journal September 2016
Wavelet-based techniques for the gamma-ray sky journal July 2016
Model-independent analysis of the DAMPE excess text January 2017
Search for invisible decays of $ω$ and $ϕ$ with $J / ψ$ data at BESIII text January 2018

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