Conveners
Single Higgs measurements and calculations: Session 1
- Hannah Arnold (Stony Brook University)
- Emanuele Di Marco (INFN, Roma 1 (IT))
- Clara Lavinia Del Pio (Brookhaven National Lab)
Single Higgs measurements and calculations: Session 2
- Hannah Arnold (Stony Brook University)
- Clara Lavinia Del Pio (Brookhaven National Lab)
- Emanuele Di Marco (INFN, Roma 1 (IT))
Single Higgs measurements and calculations: Session 3
- Emanuele Di Marco (INFN, Roma 1 (IT))
- Hannah Arnold (Stony Brook University)
- Clara Lavinia Del Pio (Brookhaven National Lab)
Single Higgs measurements and calculations: Session 4
- Emanuele Di Marco (INFN, Roma 1 (IT))
- Clara Lavinia Del Pio (Brookhaven National Lab)
- Hannah Arnold (Stony Brook University)
Single Higgs measurements and calculations: Session 5
- Hannah Arnold (Stony Brook University)
- Clara Lavinia Del Pio (Brookhaven National Lab)
- Emanuele Di Marco (INFN, Roma 1 (IT))
Description
Talks are 17' (presentation) + 5' (discussion)
Main Auditorium, 20 Washington Place
This talk presents recent precision measurements of key properties of the Higgs boson using the full dataset of proton-proton collisions at √s = 13 TeV collected during Run 2 of the LHC by the ATLAS experiment. The Higgs boson mass is determined with high accuracy through its decays into two photons and four leptons, and the adopted analysis strategies and experimental techniques will be...
An important aspect of the Higgs boson is its width–the quantity related to its lifetime and energy spectrum. Methods for measuring the Higgs boson total decay width from the off-shell to on-shell signal strength ratio will be presented for the decays of H→WW→2l2ν, H→ZZ→2l2ν, and H→ZZ→4l.
Measurement of the Higgs boson width from the on-shell peak using the H->γγ final state will be presented...
The measurement of the Higgs boson width is a critical test of the Standard Model, with significant implications for understanding electroweak symmetry breaking. Direct measurements are limited by detector resolution, but it can be measured with greater precision through a combined analysis of on-shell and off-shell Higgs boson production. While results for on-shell production have been...
Decays of the Higgs boson into pairs of bosons offer some of the most precise avenues for measuring its production cross sections and probing its fundamental properties. This talk presents the latest cross section measurements by the ATLAS experiment in bosonic decay channels, based on proton-proton collision data collected at sqrt(s) =13 TeV during Run 2 of the LHC, with the inclusion of...
The Standard Model predicts the Higgs boson to be a CP-even scalar, but CP-odd contributions to its interactions with vector bosons and quarks are not yet strongly constrained. Various Higgs boson production and decay processes provide valuable tools to investigate the CP nature of these interactions. This talk presents the most recent measurements of the CP properties of Higgs boson...
Kinematic effects in the Higgs boson decay to four leptons are investigated using full detector simulation combined with matrix element techniques. The analysis is optimized to enhance sensitivity to the tensor structure of Higgs boson interactions and the spin correlations present in the decay process. The study is based on data collected by the CMS experiment at the LHC. The interactions of...
In this talk I will discuss differential theoretical predictions for Higgs-boson production in weak-boson fusion and its subsequent decay $H\to b\bar{b}$.
The distinct kinematics of weak-boson fusion allow us to suppress QCD backgrounds by imposing appropriate event selection criteria. However, it was recently observed that in fixed-order calculations these strict event selection criteria...
The study of Higgs boson production in association with one or two top quarks offers a unique opportunity to probe the interactions between the two heaviest particles in the Standard Model. This talk presents measurements of key Higgs boson properties—specifically the production cross section and CP nature—in events produced via tH and t\bar{t}H processes. The results are based on the full Run...
The largest source of uncertainty for the gluon-gluon fusion HIggs boson cross section comes for the combination of PDF and $\alpha_s $ uncertainties. These uncertainties
also play a role in other Higgs boson subprocesses. This talk will focus on the current status of PDF uncertainties relevant for Higgs production and prospects for future improvements.
In addition, a preview of the 2025...
Detailed measurements of Higgs boson decays into leptons provide a direct probe of the Yukawa interactions and the mechanism of fermion mass generation in the Standard Model. This talk presents the latest results from the ATLAS experiment on Higgs boson decays into pairs of tau leptons, using the full Run 2 dataset of proton-proton collisions at $\sqrt{s}$=13 TeV, with the inclusion of...
We will discuss the latest STXS and differential measurements of Higgs boson cross sections with the CMS detector in bosonic and fermionic decay channels and their combination. The data collected during Run 3 of the LHC by the CMS experiment are used. EFT interpretation will be added.
Precision measurements of Higgs boson couplings and kinematic properties can be performed using the data collected by the ATLAS experiment, leveraging a variety of final states and production modes to probe different regions of phase space with increasing accuracy. By combining these measurements, the strengths of individual channels are maximally exploited, providing the most stringent global...
We present searches for rare decays and beyond standard model of the Higgs boson with the CMS detector.
Probing the Yukawa couplings between the Higgs boson and fermions is essential to understanding the origin of fermion masses. Higgs boson decays into pairs of quarks offer a direct window into these couplings and broader Higgs boson properties. This talk presents ATLAS measurements of Higgs decays into bottom quark pairs and searches for decays into charm quark pairs, based on the full Run 2...
With the full run-2 data and with the advent of ML flavour tagging techniques, a lot of progress has been made to constrain the couplings of the Higgs to c-quarks and b-quarks. In this talk, we present the latest results of direct Higgs to heavy flavour couplings by the CMS experiment in the ttH/cH production, as well as the results obtained in indirect ways.
Higgs boson production through gluon fusion in association with two jets is an irreducible background to Higgs boson production through vector boson fusion. Despite a range of available simulation tools, precise predictions for the corresponding final state are hard to achieve. Using state-of-the art fixed-order calculations as the baseline for a comparison, we perform a detailed study of...
Effective Field Theories and anomalous couplings including CP violation provide interesting ways to parameterize indirect BSM physics, when its characteristic scale is larger than the one directly accessible at the LHC, for a large class of models. Constraints on such effects derived by measurements of several production and decay modes of the Higgs boson and their combination on the data set...
