EPS-HEP 2025

Session

Poster T08

Higgs Physics

9 Jul 2025, 18:23

Espace 1000

152. A combined test of CP violation in Higgs Boson coupling with electroweak gauge boson (W/Z)

T08 - Higgs Physics

Poster

This poster shows a combined test of CP violation in the coupling between Higgs Boson and electroweak gauge boson (W/Z) via decay channels including H→γγ, ZZ, WW, ττ, and bb analysis which were conducted by ATLAS experiment using the full Run-2 pp dataset at √𝑠 = 13 TeV. The constrain is set on parameters describing the strength of CP-odd component in coupling in effective field theory base....

153. A new avenue for probing the Higgs self-coupling through Higgs pair production in multi-lepton final states with the ATLAS detector

T08 - Higgs Physics

Poster

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...

155. Implementation of a kinematic fit algorithm in the search for Higgs boson pairs in the $b\bar{b}\gamma\gamma$ final state with the ATLAS detector

T08 - Higgs Physics

Poster

The observation of Higgs boson pairs is a fundamental step towards understanding the model of spontaneous electro-weak symmetry breaking as it represents the most direct method to estimate the cubic term of the Higgs boson potential, responsible for the tri-linear self-coupling of the boson ($\lambda_{HHH}$). The poster will discuss the status and future perspectives of the search for such...

685. Measurement of the Higgs Boson mass and width at CMS and projections for HL-LHC

T08 - Higgs Physics

Poster

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...

836. Probing the Higgs-charm Yukawa coupling at CMS

T08 - Higgs Physics

Poster

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...

167. Search for CP violating effects in HWW vertex in WH production channel with H ->bb in 13 TeV pp collisions with the ATLAS detector

T08 - Higgs Physics

Poster

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...

168. Search for Higgs boson pair production in the HH->bbyy final state with the full Run 2 + partial Run 3 pp collision data collected by the ATLAS Experiment

T08 - Higgs Physics

Poster

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...

169. Search for Higgs boson pair production in the 2b+2l+MET final state in pp collisions with the ATLAS detector

T08 - Higgs Physics

Poster

The Higgs boson self-coupling is a key parameter of the Standard Model, but is still experimentally unconstrained as it requires the challenging simultaneous production of two Higgs bosons in the same event. A search for a Higgs boson pair (HH) production is presented, in which one of the Higgs bosons decays to a b-quark pair (bb) and the other decays to WW, or ZZ, or \tau^+ \tau^-, with in...