10-17 March 2018
Europe/Paris timezone

Associated production of $H(b \bar b,c \bar c)$ with a $W$ or a $Z$ in ATLAS

12 Mar 2018, 17:40
15m

Speaker

Prof. Jason Nielsen (University of California, Santa Cruz)

Description

Results are presented from the ATLAS search for Standard Model Higgs bosons decaying to a $b\bar b$ or $c \bar c$ pair, produced in association with a $W$ or $Z$ boson. The analyzed data correspond to 36.1 fb$^-1$ of 13 TeV proton-proton collision data collected in Run 2 of the Large Hadron Collider. The combination of Run 1 and Run 2 data in the $b\bar b$ channel yields a ratio of the measured production rate to the SM prediction equal to $0.90 \pm 0.18 \text{(stat.)} ^{+0.21}_{-0.19} \text{(syst.)}$. The observed significance of $3.6\sigma$ provides evidence for the direct $Hbb$ Yukawa coupling. A similar search for $c \bar c$ decays results in an upper limit on the production cross section times branching ratio.

Primary authors

Prof. Jason Nielsen (University of California, Santa Cruz) ATLAS Collaboration

Presentation Materials