Constraints on scalar dark matter from direct experimental searches
By Xiao-Gang He, Tong Li, Xue-qian Li, J. Tandean, Ho-Chin Tsai. 2008
145 citations recorded by the source corpus.
The standard model (SM) plus a real gauge-singlet scalar field dubbed darkon (SM+D) is the simplest model possessing a weakly interacting massive particle (WIMP) dark-matter candidate. The upper limits for the WIMP-nucleon elastic cross section as a function of WIMP mass from the recent XENON10 and CDMS II experiments rule out darkon mass ranges from 10 to (50, 70, 75) GeV for Higgs-boson masses of (120, 200, 350) GeV, respectively. This may exclude the possibility of the darkon providing an explanation for the gamma-ray excess observed in the EGRET data. We show that by extending the SM+D to a two-Higgs-doublet model plus a darkon the experimental constraints on the WIMP-nucleon interactions can be circumvented due to suppression occurring at some values of the product tan{alpha}tan{beta}, with {alpha} being the neutral-Higgs mixing angle and tan{beta} the ratio of vacuum expectation values of the Higgs doublets. We also comment on the implication of the darkon model for Higgs searches at the LHC.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/71a34f7cb88efe0fc0453b83db5c57b4c19f168a
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In Astronomy and Astrophysics
- M. Raidal
- M. Gonderinger
- Igor P. Ivanov
- G. Arcadi
- M. Ramsey-Musolf
- Abdelhak Djouadi
- K. Kannike
- T. Konstandin
In Nuclear and High Energy Physics
- M. Raidal
- Igor P. Ivanov
- G. Arcadi
- M. Gonderinger
- Hiren H. Patel
- M. Ramsey-Musolf
- Abdelhak Djouadi
- K. Kannike
Citations in the corpus
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- Vacuum stability, perturbativity, and scalar singlet dark matter (2009, background): “[6, 18]; this cross section is then scaled by the fraction of the relic density constituted by the singlet,”