Makale detayı · 2018
Search for dark matter produced in association with a Higgs boson decaying to γγ or τ τ − at s=13 \sqrt{s}=13 TeV
Journal of High Energy Physics
- Yıl
- 2018
- ISSN
1029-8479- Tür
- article
Veri kaynağı ayrımı
- YÖKSİS YÖKSİS makale kaydı
- OpenAlex OpenAlex zenginleştirmesi (özet, atıf, konular)
Özet
İngilizce (OpenAlex)
Abstract A search for dark matter particles is performed by looking for events with large transverse momentum imbalance and a recoiling Higgs boson decaying to either a pair of photons or a pair ofτleptons. The search is based on proton-proton collision data at a center-of-mass energy of 13 TeV collected at the CERN LHC in 2016 and corresponding to an integrated luminosity of 35.9 fb−1. No significant excess over the expected standard model background is observed. Upper limits at 95% confidence level are presented for the product of the production cross section and branching fraction in the context of two benchmark simplified models. For the Z′-two-Higgs-doublet model (where Z′is a new massive boson mediator) with an intermediate heavy pseudoscalar particle of massmA= 300 GeV andmDM= 100 GeV, the Z′masses from 550 GeV to 1265 GeV are excluded. For a baryonic Z′model, withmDM= 1 GeV, Z′masses up to 615 GeV are excluded. Results are also presented for the spin-independent cross section for the dark matter-nucleon interaction as a function of the mass of the dark matter particle. This is the first search for dark matter particles produced in association with a Higgs boson decaying to twoτleptons.
Konular
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
Birincil konu Particle physics theoretical and experimental studies