Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 47: Higgs-Boson (Eigenschaften) (theo.+exp.)

T 47.9: Talk

Tuesday, March 1, 2016, 18:45–19:00, VMP5 HS B1

Probing triple-Higgs productions via 4b2γ at a 100 TeV hadron collider — Chien-Yi Chen^1,2,3, Qi-Shu Yan^4,5,6, Xiaoran Zhao⁴, •Zhijie Zhao⁷, and Yiming Zhong⁸ — ¹Department of Physics, Brookhaven National Laboratory, Upton, New York 11973, USA — ²Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada — ³Perimeter Institute for Theoretical Physics, Waterloo, ON N2J 2W9, Canada — ⁴School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P. R. China — ⁵Center for High-Energy Physics, Peking University, Beijing 100871, P. R. China — ⁶Center for future high energy physics, CAS, P. R. China — ⁷Department of Physics, University of Siegen, 57068 Siegen, Germany — ⁸C. N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, New York 11794, USA

The quartic self-coupling of the Standard Model Higgs boson can only be measured by observing the triple-Higgs production process, but it is challenging for the LHC Run 2 or ILC at a few TeV because of its extremely small production rate. In this talk, we present a detailed MC simulation study of the triple-Higgs production through gluon fusion at a 100 TeV hadron collider and explore the feasibility of observing this production mode. We focus on the decay channel HHH→ bbbbγγ, investigating detector effects and optimizing the kinematic cuts to discriminate the signal from the backgrounds. We also explore the dependence of the cross section upon the trilinear (λ₃) and quartic (λ₄) self-couplings of the Higgs.