VBF Workshop: Collaborative Advances in Theory and Experiment

Session

Selected topics on VBF and related

30 Oct 2024, 14:00

13/2-005 (CERN)

27. Higgs boson production in weak-boson fusion and H → bb̄ decay at NNLO with realistic event selection criteria

Ivan Novikov

30/10/2024, 14:00

The b-quark Yukawa coupling $y_b$ can be measured in $H\to b\bar{b}$ decay. While $H\to b\bar{b}$ is the main decay mode of the Higgs boson, measuring it experimentally is challenging because of the large number of b-quarks from other QCD processes. However, Higgs boson production in weak-boson fusion (WBF) can be distinguished from those QCD backgrounds by the presence of two nearly...

26. Electroweak Hjj production in the POWHEG-BOX

Simon Reinhardt (University of Tübingen)

30/10/2024, 14:30

We present an implementation of the full electroweak Higgs plus two jets production process at hadron colliders. Our implementation, including vector-boson fusion and Higgsstrahlung contributions, is built in the framework of the resonance-aware version of the POWHEG BOX, which allows to match next-to-leading order QCD and EW corrections with shower Monte Carlo programs like PYTHIA8.
We...

31. Precise prediction for Higgs plus two jets production

Hantian Zhang (Karlsruhe Institute of Technology)

30/10/2024, 15:00

In this talk, I will present the NLO QCD prediction for loop-induced Higgs-plus-two-jets production (pp -> H + 2 jets) at the LHC in [2110.06953]. The top-quark mass effects in Born and real corrections are computed exactly, and the effects in the two-loop virtual corrections are taken into account through the so-called full-theory approximation. I will discuss the technical challenges for...

30. Treatment of ggF contamination in VBF phase-spaces across CMS analyses

30/10/2024, 15:30

An in-depth discussion of the gluon gluon fusion contamination in the VBF phase-space for both simplified template cross section and fiducial measurements in CMS will be given. In particular, the talk will cover different mitigation techniques for several analyses and into the different mitigation treatments the different analyses use and will touch upon the experimental challenges this...

28. Higgs + photon and triboson production as probes of Higgs Yukawa couplings

Jose Miguel No (IFT-UAM/CSIC)

30/10/2024, 16:30

The measurement of Yukawa couplings of the 125 GeV Higgs boson to light SM fermions (weakly constrained at present, particularly for first-generation fermions) is very challenging experimentally, yet key to unravel the details of the mass generation mechanism for the first two generations of matter and establish the role of the SM Higgs in such a mechanism. We discuss two recently proposed...

32. Exploring the CP-sensitive SXTS staging in the HWW decay channel by the ATLAS experiment

Metea Castilleja Marr (Simon Fraser University (CA))

30/10/2024, 17:00

The current STXS stage 1.2 binning is not sensitive to the charge-parity property of the Higgs boson. While there is an on-going effort to finalize the STXS stage 1.3 bins, the ATLAS experiment is making a first attempt at measuring CP-sensitive STXS-like bins in the H->WW decay channel. This is done by measuring cross-sections split by the signed azimuthal angle difference between the two...

29. VBF simulations in CMS and theory limiting factors in CMS analyses

CMS speaker

This talk focuses on an in-depth review of the Higgs production through Vector Boson Fusion simulation programs used in CMS analyses. A review of both fixed order accuracy programs and Parton Shower uncertainties depending on the final states and the analysis scope will be given. Additionally, the talk intends to go into the details of the hadronization and underlying event modelling currently...