Apr 11 – 14, 2022
CERN
Europe/Zurich timezone

A search for the dimuon decay of the Standard Model Higgs boson in pp collisions at 13 TeV with the ATLAS Detector

Apr 12, 2022, 6:35 PM
8m
500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

400
Show room on map
Young Scientists Forum (YSF) YSF

Speakers

Ye Chen (University of Science and Technology of China (CN)) Ye Chen (Hefei University of Science and Technology of China)

Description

A search for the dimuon decay of the Standard Model (SM) Higgs boson is performed using data corresponding to an integrated luminosity of 139/fb collected with the ATLAS detector in Run2 pp collisions at 13 TeV at the Large Hadron Collider. The observed (expected) significance over the background-only hypothesis for a Higgs boson with a mass of 125.09 GeV is 2.0σ (1.7σ). The observed upper limit on the cross section times branching ratio is 2.2 times the SM prediction at 95% confidence level, while the expected limit on a H → μμ signal assuming the absence (presence) of a SM signal is 1.1 (2.0). The best-fit value of the signal strength parameter, defined as the ratio of the observed signal yield to the one expected in the SM, is μ=1.2 ± 0.6.

Primary authors

Ye Chen (University of Science and Technology of China (CN)) Ye Chen (Hefei University of Science and Technology of China)

Presentation materials