A search is presented for non-resonant Higgs boson pair production decaying to multi-lepton final states using 140 fb-1 of proton-proton collision data at centre-of-mass energy 13 TeV, recorded with the ATLAS detector during Run 2 of the LHC. By combining nine distinct channels characterized by varying multiplicities of electrons, muons, taus, and photons, this analysis represents a novel and...
The Higgs boson mass and width are key free parameters of the Standard Model and must be determined experimentally. This poster presents the measurement of the Higgs boson mass in the H $\to$ ZZ $\to$ 4ℓ decay channel, using 138 $\text{fb}^{-1}$ of proton-proton collision data collected by the CMS experiment at a centre-of-mass-energy of 13 TeV. Constraints on the Higgs boson on-shell width...
The measurement of the Higgs-charm Yukawa coupling is one
of the next milestones in Higgs physics at the LHC and serves as another
test of the consistency of the Standard Model. The Higgs-charm coupling
may be experimentally probed in different ways. These include for
example searches for signatures where a Higgs boson directly decays to a
pair of charm and anti-charm quarks or where a...
The Standard Model (SM) predicts the Higgs boson to be a CP-even (scalar) particle. Any deviation from a purely CP-even interaction of the Higgs boson with other SM particles would indicate physics beyond the SM. This poster presents a search for CP violating effects in Higgs boson production in association with a W boson, using proton-proton collision data collected by the ATLAS detector at...
A search for non-resonant Higgs boson pair production in the bbγγ final state is performed using the full Run 2 and partial Run 3 proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at CERN. The data amounts to an integrated luminosity of 140 fb-1 at a center of mass energy of 13 TeV, plus 59 fb-1 at a center of mass energy of 13.6 TeV. The analysis is...
