Jul 4 – 11, 2018
COEX, SEOUL
Asia/Seoul timezone

Boosted Higgs decay in a pair of light jets

Jul 5, 2018, 9:45 AM
15m
201 (COEX, Seoul)

201

COEX, Seoul

Parallel Higgs Physics Higgs Physics

Speaker

Zhuoni Qian (IBS)

Description

We study the Higgs boson (h) decay to two light jets at the 14 TeV High-Luminosity-LHC (HL-LHC), where a light jet (j) represents any non-flavor tagged jet from the observational point of view. The decay mode h→gg is chosen as the benchmark since it is the dominant channel in the Standard Model (SM), but the bound obtained is also applicable to the light quarks (j=u,d,s). We estimate the achievable bounds on the decay branching fractions through the associated production Vh (V=W±,Z). Events of the Higgs boson decaying into heavy (tagged) or light (un-tagged) jets are correlatively analyzed. We find that with 3000 fb−1 data at the HL-LHC, we should expect approximately 1σ statistical significance on the SM Vh(gg) signal in this channel. This corresponds to a reachable upper bound BR(h→jj)≤4 BRSM(h→gg) at 95% confidence level. A consistency fit also leads to an upper bound BR(h→cc)<15 BRSM(h→cc) at 95% confidence level. The estimated bound may be further strengthened by adopting multiple variable analyses, or adding other production channels.

Primary authors

Linda Carpenter (Ohio State University) Tao Han (University of Pittsburgh) Khalida Hendricks (Ohio State University) Zhuoni Qian (IBS) Ning Zhou (Shanghai Jiao Tong University (CN))

Presentation materials