# XXIV International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS16)

Apr 11 – 15, 2016
DESY Hamburg
Europe/Berlin timezone

## Boosting Higgs pair production in the $b\bar{b}b\bar{b}$ final state with multivariate techniques

Apr 13, 2016, 5:30 PM
15m
SR4b (DESY Hamburg)

### SR4b

#### DESY Hamburg

Electroweak Physics and Beyond the Standard Model

### Speaker

Dr Nathan Hartland (Oxford)

### Description

The measurement of Higgs pair production will be a cornerstone of the LHC program in the coming years. Double Higgs production provides a crucial window upon the mechanism of electroweak symmetry breaking and has a unique sensitivity to the Higgs trilinear coupling. We study the feasibility of a measurement of Higgs pair production in the b ̄bb ̄b final state at the LHC. Our analysis is based on a combination of traditional cut- based methods with state-of-the-art multivariate techniques. We account for all relevant backgrounds, including the contributions from light and charm jet mis-identification, which are ultimately comparable in size to the irreducible 4b QCD background. We demonstrate the robustness of our analysis strategy in a high pileup environment. For an integrated luminosity of L = 3 ab−1, a signal significance of S/√B ≃ 3 is obtained, indicating that the b ̄bb ̄b final state alone could allow for the observation of double Higgs production at the High Luminosity LHC.

### Primary author

Dr Nathan Hartland (Oxford)

 Slides