23 August 2021 to 7 October 2021
Venue: OAC conference center, Kolymbari, Crete, Greece. Participation is possible also via internet.
Europe/Athens timezone

Higgs self-coupling measurements in the HL-LHC era: new approaches for the HH->4b final state.

25 Aug 2021, 13:00
30m
Room 2

Room 2

Speaker

Santiago Rafael Paredes Saenz (Universite Libre de Bruxelles (BE))

Description

Searches for pairs of Higgs bosons will be, in all likelihood, the best tools to precisely measure the Higgs boson self-coupling $\lambda_{hhh}$ in future colliders. We study various strategies for the $hh\to b \bar{b} b \bar{b}$ search in the HL-LHC era with focus on constraining $\lambda_{hhh}$. We implement a machine-learning-based approach to separate signal and background and apply recent advances in machine learning interpretability, compare the traditional 4 $b$-jet reconstruction to final states with 1 or 2 large-radius jets, and test scenarios with different top-quark Yukawa couplings, among other factors.
Based on arXiv:2004.04240.

Details

Dr. Santiago Paredes Saenz, Université Libre de Bruxelles

Is this abstract from experiment? No
Name of experiment and experimental site N/A
Is the speaker for that presentation defined? Yes
Internet talk No

Primary authors

Jacob Amacker William Balunas (University of Oxford (GB)) Lydia Audrey Beresford (CERN) Daniela Bortoletto (University of Oxford (GB)) James Frost (University of Oxford (GB)) Cigdem Issever (Humboldt University of Berlin and DESY (DE)) Jesse Liu (University of Chicago) James McKee Alessandro Micheli (University of Oxford (GB)) Santiago Rafael Paredes Saenz (Universite Libre de Bruxelles (BE)) Michael Spannowsky (IPPP Durham) Beojan Stanislaus (CERN)

Presentation materials