Details

Autor(en) / Beteiligte

• Aad, G

Titel

Searches for Higgs boson pair production in the hh arrow right bb[tau][tau], gamma gamma WW, gamma gamma bb, bbbb channels with the ATLAS detector

Ist Teil von

• Physical review. D, 2015-11, Vol.92 (9)

Erscheinungsjahr

2015

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Searches for both resonant and nonresonant Higgs boson pair production are performed in the hh arrow right bb[tau][tau], gamma gamma WW* final states using 20.3 fb-1 of pp collision data at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the Large Hadron Collider. No evidence of their production is observed and 95% confidence-level upper limits on the production cross sections are set. These results are then combined with the published results of the hh arrow right gamma gamma bb, bbbb analyses. An upper limit of 0.69 (0.47) pb on the nonresonant hh production is observed (expected), corresponding to 70 (48) times the SM gg arrow right hh cross section. For production via narrow resonances, cross-section limits of hh production from a heavy Higgs boson decay are set as a function of the heavy Higgs boson mass. The observed (expected) limits range from 2.1 (1.1) pb at 260 GeV to 0.011 (0.018) pb at 1000 GeV. These results are interpreted in the context of two simplified scenarios of the Minimal Supersymmetric Standard Model.