skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Precision measurements, dark matter direct detection and LHC Higgs searches in a constrained NMSSM

Abstract

We reexamine the constrained version of the Next-to-Minimal Supersymmetric Standard Model with semi universal parameters at the GUT scale (CNMSSM). We include constraints from collider searches for Higgs and susy particles, upper bound on the relic density of dark matter, measurements of the muon anomalous magnetic moment and of B-physics observables as well as direct searches for dark matter. We then study the prospects for direct detection of dark matter in large scale detectors and comment on the prospects for discovery of heavy Higgs states at the LHC.

Authors:
 [1];  [2];  [3]
  1. LAPTH, U. de Savoie, CNRS, 9 Chemin de Bellevue, 74940 Annecy-le-Vieux (France)
  2. Laboratoire Physique Theorique et Astroparticules, Universite de Montpellier II, Place Eugene Bataillon, 34095 Montpellier (France)
  3. Skobeltsyn Institute of Nuclear Physics, Moscow State University, Leninskie gory, GSP-1, Moscow 119991 (Russian Federation)
Publication Date:
OSTI Identifier:
22156862
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2009; Journal Issue: 01; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCURACY; CERN LHC; GRAND UNIFIED THEORY; HIGGS BOSONS; LIMITING VALUES; MAGNETIC MOMENTS; MUONS; NONLUMINOUS MATTER; STANDARD MODEL; SUPERSYMMETRY

Citation Formats

Belanger, G., Hugonie, C., and Pukhov, A., E-mail: belanger@lapp.in2p3.fr, E-mail: cyril.hugonie@lpta.univ-montp2.fr, E-mail: pukhov@lapp.in2p3.fr. Precision measurements, dark matter direct detection and LHC Higgs searches in a constrained NMSSM. United States: N. p., 2009. Web. doi:10.1088/1475-7516/2009/01/023.
Belanger, G., Hugonie, C., & Pukhov, A., E-mail: belanger@lapp.in2p3.fr, E-mail: cyril.hugonie@lpta.univ-montp2.fr, E-mail: pukhov@lapp.in2p3.fr. Precision measurements, dark matter direct detection and LHC Higgs searches in a constrained NMSSM. United States. doi:10.1088/1475-7516/2009/01/023.
Belanger, G., Hugonie, C., and Pukhov, A., E-mail: belanger@lapp.in2p3.fr, E-mail: cyril.hugonie@lpta.univ-montp2.fr, E-mail: pukhov@lapp.in2p3.fr. Thu . "Precision measurements, dark matter direct detection and LHC Higgs searches in a constrained NMSSM". United States. doi:10.1088/1475-7516/2009/01/023.
@article{osti_22156862,
title = {Precision measurements, dark matter direct detection and LHC Higgs searches in a constrained NMSSM},
author = {Belanger, G. and Hugonie, C. and Pukhov, A., E-mail: belanger@lapp.in2p3.fr, E-mail: cyril.hugonie@lpta.univ-montp2.fr, E-mail: pukhov@lapp.in2p3.fr},
abstractNote = {We reexamine the constrained version of the Next-to-Minimal Supersymmetric Standard Model with semi universal parameters at the GUT scale (CNMSSM). We include constraints from collider searches for Higgs and susy particles, upper bound on the relic density of dark matter, measurements of the muon anomalous magnetic moment and of B-physics observables as well as direct searches for dark matter. We then study the prospects for direct detection of dark matter in large scale detectors and comment on the prospects for discovery of heavy Higgs states at the LHC.},
doi = {10.1088/1475-7516/2009/01/023},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 01,
volume = 2009,
place = {United States},
year = {Thu Jan 15 00:00:00 EST 2009},
month = {Thu Jan 15 00:00:00 EST 2009}
}
  • Assuming the lightest neutralino solely composes the cosmic dark matter, we examine the constraints of the CDMS-II and XENON100 dark matter direct searches on the parameter space of the minimal supersymmetric standard model (MSSM) Higgs sector. We find that the current CDMS-II/XENON100 limits can exclude some of the parameter space which survive the constraints from the dark matter relic density and various collider experiments. We also find that in the currently allowed parameter space, the charged Higgs boson is hardly accessible at the LHC for an integrated luminosity of 30 fb{sup -1}, while the neutral non-SM (standard model) Higgs bosonsmore » (H,A) may be accessible in some allowed region characterized by a large {mu}. The future XENON100 (6000 kg-days exposure) will significantly tighten the parameter space in case of nonobservation of dark matter.« less
  • We examine the projected ability to reconstruct the mass, scattering, and annihilation cross section of dark matter in the new generation of large underground detectors, XENON-1T, SuperCDMS, and DarkSide-G2, in combination with diffuse gamma radiation from expected 15 years of data from Fermi-LAT observation of 46 local spiral dwarf galaxies and projected CTA sensitivity to a signal from the Galactic Center. To this end we consider several benchmark points spanning a wide range of WIMP mass, different annihilation final states, and large enough event rates to warrant detection in one or more experiments. As previously shown, below some 100 GeVmore » only direct detection experiments will in principle be able to reconstruct WIMP mass well. This may, in case a signal at Fermi-LAT is also detected, additionally help restricting σ v and the allowed decay branching rates. In the intermediate range between some 100 GeV and up a few hundred GeV, direct and indirect detection experiments can be used in complementarity to ameliorate the respective determinations, which in individual experiments can at best be rather poor, thus making the WIMP reconstruction in this mass range very challenging. At large WIMP mass, ∼ 1 TeV, CTA will have the ability to reconstruct mass, annihilation cross section, and the allowed decay branching rates to very good precision for the τ{sup +}τ{sup -} or purely leptonic final state, good for the W {sup +} W {sup -} case, and rather poor for b b-bar . A substantial improvement can potentially be achieved by reducing the systematic uncertainties, increasing exposure, or by an additional measurement at Fermi-LAT that would help reconstruct the annihilation cross section and the allowed branching fractions to different final states.« less
  • The direct detection of neutralino dark matter is analysed in the framework of the Next-to-Minimal Supersymmetric Standard Model. After performing a detailed analysis of the parameter space, taking into account all the available constraints from LEP, the neutralino-nucleon cross section is computed. Sizable values for the detection cross section, within the reach of dark matter detectors, are attainable in this scenario, due to the exchange of very light Higgses with m{sub h1{sup 0}} < or approx. 70 GeV. These have a significant singlet composition, thus escaping detection and being in agreement with accelerator data. The lightest neutralino exhibits a largemore » singlino-Higgsino composition, and a mass in the range 50 < or approx. m{sub {chi}}{sub -tilde1}{sup 0}} < or approx. 100 GeV.« less
  • Searches for the Minimal Supersymmetric Standard Model (MSSM) Higgs bosons are among the most promising channels for exploring new physics at the Tevatron. In particular, interesting regions of large tan {beta} and small m{sub A} are probed by searches for heavy neutral Higgs bosons, A and H, when they decay to {tau}{sup +}{tau}{sup -} and b{bar b}. At the same time, direct searches for dark matter, such as CDMS, attempt to observe neutralino dark matter particles scattering elastically off nuclei. This can occur through t-channel Higgs exchange, which has a large cross section in the case of large tan {beta}more » and small m{sub A}. As a result, there is a natural interplay between the heavy, neutral Higgs searches at the Tevatron and the region of parameter space explored by CDMS. We show that if the lightest neutralino makes up the dark matter of our universe, current limits from CDMS strongly constrain the prospects of heavy, neutral MSSM Higgs discovery at the Tevatron (at 3{sigma} with 4 fb{sup -1} per experiment) unless |{mu}| {approx}> 400 GeV. The limits of CDMS projected for 2007 will increase this constraint to |{mu}| {approx}> 800 GeV. On the other hand, if CDMS does observe neutralino dark matter in the near future, it will make the discovery of heavy, neutral MSSM Higgs bosons far more likely at the Tevatron.« less
  • Recent LHC searches have not found a clear signal of the Higgs boson h of the standard model (SM) with three or four families in the mass range m{sub h}=120-600 GeV. If the Higgs had an unexpectedly large invisible branching ratio, the excluded m{sub h} regions would shrink. This can be realized in the simplest weakly interacting massive particle dark matter (DM) model, which is the SM plus a real gauge-singlet scalar field D as the DM, via the invisible mode h{yields}DD. Current data allow this decay to occur for D-mass values near, but below, m{sub h}/2 and those compatiblemore » with the light DM hypothesis. For such D masses, h{yields}DD can dominate the Higgs width depending on m{sub h}, and thus sizable portions of the m{sub h} exclusion zones in the SM with three or four families may be recovered. Increased luminosity at the LHC may even reveal a Higgs having SM-like visible decays still hiding in the presently disallowed regions. The model also accommodates well the new possible DM hints from CRESST-II and will be further tested by improved data from future DM direct searches.« less