Summary of new ATLAS results from LHCP 2023
22 May 2023 | By
The eleventh annual conference on Large Hadron Collider physics (LHCP 2023) kicks off today in Belgrade (Serbia) signalling the return of this week-long event to its face-to-face format. The programme covers the wide spectrum of Large Hadron Collider physics and technology, from several final studies of the LHC Run-2 dataset (2015-2018) to detailed assessments of the upgraded accelerators and detectors for Run 3.
ATLAS Collaboration members will be unveiling several new analyses of the LHC Run-2 dataset and early physics results using the Run-3 dataset (2022-ongoing). Look forward to new studies of the Higgs boson, novel searches for Dark Matter particles, and much more.
Key results will be explored in ATLAS Physics Briefings, to be released throughout the conference. Check the LHCP 2023 tag for the latest updates. The full list of new ATLAS results presented at LHCP 2023 is given below.
Latest Physics Briefings and News Articles
- ATLAS measures the Higgs boson at 13.6 TeV, ATLAS Physics Briefing, 24 May 2023
- New high-precision measurements of W and Z boson properties, ATLAS Physics Briefing, 25 May 2023
- LHC experiments see first evidence for rare Higgs boson decay into two different bosons, ATLAS Physics Briefing, 26 May 2023
- LHC experiments see first evidence of a rare Higgs boson decay, CERN Media Update, 26 May 2023
- Not a jet all the way: is dark matter hiding in plain sight?, ATLAS Physics Briefing, 26 May 2023
New results presented at LHCP 2023
Higgs Boson
- Measurement of the H→γγ and H→ZZ∗→4ℓ cross-sections in proton-proton collisions at 13.6 TeV with the ATLAS detector (ATLAS-CONF-2023-032)
- Effective field theory interpretation of the measurement of off-shell Higgs boson production from ZZ → 4ℓ and ZZ → 2ℓ2𝝂 decay channels with the ATLAS detector (ATL-PHYS-PUB-2023-012)
- Evidence for the Higgs boson decay to a Z boson and a photon at the LHC (ATLAS-CONF-2023-025)
- Search for the Zγ decay mode of new high-mass resonances in proton-proton collisions at 13 TeV with the ATLAS detector (ATLAS-CONF-2023-030)
Scalar boson and diboson searches
- Search for a CP-odd Higgs boson decaying to a heavy CP-even Higgs boson and a Z boson in the ℓ+ℓ−tt− and νν−bb− final states using 140 fb−1 of data collected with the ATLAS detector (ATLAS-CONF-2023-034)
- Search for a new heavy scalar particle decaying into a Higgs boson and a new scalar singlet in final states with one or two light leptons and a pair of τ-leptons with the ATLAS detector (ATLAS-CONF-2023-031)
- Search for a new pseudoscalar decaying into a pair of muons in events with a top-quark pair at 13 TeV with the ATLAS detector (arXiv:2304.14247, see figures)
- Search for dark photons in rare Z boson decays with the ATLAS detector (ATLAS-CONF-2023-016)
Top quark
- Measurement of jet substructure in boosted tt− events with the ATLAS detector using 140 fb−1 of 13 TeV proton-proton collisions (ATLAS-CONF-2023-027)
- Measurement of t-channel production of single top quarks and antiquarks in proton-proton collisions at 13 TeV using the full ATLAS Run 2 dataset (ATLAS-CONF-2023-026)
- Measurement of t-channel single-top-quark production in proton-proton collisions at 5.02 TeV with the ATLAS detector (ATLAS-CONF-2023-033)
- Measurement of tt¯ and Z-boson cross sections and their ratio using proton–proton collisions at 13.6 TeV with the ATLAS detector (ATLAS-CONF-2023-006)
- Measurement of the tt¯ cross-section and tt¯/Z cross-section ratio using LHC Run 3 proton–proton collision data at a centre-of-mass energy of 13.6 TeV (ATLAS-CONF-2022-070)
Standard Model
- Measurement and interpretation of same-sign W boson pair production in association with two jets in proton-proton collisions at a center-of-mass energy of 13 TeV with the ATLAS detector (ATLAS-CONF-2023-023)
- Measurement of the cross sections of the electroweak and total production of a Zγ pair in association with two jets in proton–proton collisions at 13 TeV with the ATLAS detector (STDM-2018-36)
- Differential cross-section measurements of the production of four charged leptons in association with two jets using the ATLAS detector (ATLAS-CONF-2023-024)
- Precise measurements of W and Z transverse momentum spectra with the ATLAS detector at 5.02 TeV and 13 TeV (ATLAS-CONF-2023-028)
- Measurements of multijet event isotropies using optimal transport with the ATLAS detector (arXiv:2305.16930, see figures)
Supersymmetry
- Search for electroweak SUSY production in final states with tau-leptons in 13 TeV proton-proton collisions with the ATLAS detector (ATLAS-CONF-2023-029)
Searches for New Physics
- Search for new phenomena in two-body invariant mass distributions using unsupervised machine learning for anomaly detection at 13 TeV with the ATLAS detector (ATLAS-CONF-2023-022)
- Search for single production of vector-like T quarks decaying into Ht or Zt in proton-proton collisions at 13 TeV with the ATLAS detector (arXiv:2305.03401, see figures)
- Search for non-resonant production of semi-visible jets using Run 2 data in ATLAS (EXOT-2022-37)
- Search for dark mesons decaying to top and bottom quarks with the ATLAS detector in 140 fb−1 of proton-proton collisions at 13 TeV (ATLAS-CONF-2023-021)
- Combination and summary of ATLAS dark matter searches interpreted in a 2HDM with a pseudo-scalar mediator using 139 fb−1 of 13 TeV proton-proton collision data (EXOT-2018-64)
- Search for lepton-flavour violation in high-mass dilepton final states using 139 fb−1 of proton–proton collisions at 13 TeV with the ATLAS detector (EXOT-2019-20)
- Search for Majorana neutrinos in same-sign WW scattering events from proton-proton collisions at 13 TeV (EXOT-2020-06)
