Summary of new ATLAS results from Moriond 2021
21 March 2021 | By
Since 1966, Les Rencontres de Moriond has united experimentalists and theorists for weeks of scientific discussion. 2021 is no exception – but instead of in-person chats over coffee in La Thuile (Italy), physicists will be sharing their new findings in online meetings.
The first week-long Moriond conference, Electroweak Interactions and Unified Theories, kicks off today. The second, QCD and High Energy Interactions, begins one week later. ATLAS Collaboration members will be attending both, presenting their latest results using the full dataset recorded during Run 2 of the LHC (2015–2018). Look forward to exciting new insight into supersymmetry, high-precision measurements of the Higgs boson, novel searches for exotic particles and more.
While several of these key results will be explored in physics briefings, many more will be presented throughout the conferences. Explore them all in the links below, which will be updated continuously over the coming weeks.
Latest Physics Briefings and News
- Studying top quarks at high and not-so-high energies, Physics Briefing, 11 March 2021
- The supersymmetric bottom quark and its friends, Physics Briefing, 16 March 2021
- Deeper insight into Higgs boson production using W bosons, Physics Briefing, 21 March 2021
- Better late than never: ATLAS searches for late-decaying new particles, Physics Briefing, 22 March 2021
- ATLAS finds further confirmation of evidence for four top quark process, Physics Briefing, 23 March 2021
- Twice the Higgs, twice the challenge: ATLAS searches for pairs of Higgs bosons in the rare bbɣɣ decay channel, Physics Briefing, 29 March 2021
- ATLAS searches for pairs of Higgs bosons in a rare particle decay, CERN News, 30 March 2021
- ATLAS highlights from the Moriond 2021 conferences, ATLAS News, 2 April 2021
For all news and physics briefings, follow the 2021 Winter Conferences tag.
New results presented at Moriond 2021
Higgs boson
- Combined effective field theory interpretation of H→WW* and WW measurements using ATLAS data (ATL-PHYS-PUB-2021-010)
- Study of Higgs-boson production with large transverse momentum using the H→bb decay with the ATLAS detector (ATLAS-CONF-2021-010)
- Measurements of gluon fusion and vector-boson-fusion production of the Higgs boson in H→WW*→eνμν decays using proton–proton collisions at 13 TeV with the ATLAS detector (ATLAS-CONF-2021-014)
- Search for Higgs boson pair production in the two bottom quarks plus two photons final state in proton-proton collisions at 13 TeV with the ATLAS detector (ATLAS-CONF-2021-016)
Standard Model
- Measurements of W+W−+ ≥1 jet production cross-sections in proton–proton collisions at 13 TeV with the ATLAS detector (arXiv: 2103.10319, see figures)
Top quark
- Measurement of the tt production cross-section using dilepton events in proton–proton collisions at 5.02 TeV with the ATLAS detector (ATLAS-CONF-2021-003)
- Measurement of the tttt production cross section in proton–proton collisions at 13 TeV with the ATLAS detector (ATLAS-CONF-2021-013)
Exotic New Physics
- Searches for electroweak production of two jets in association with a Higgs boson decaying fully or partially to invisible particles, including a final state photon using proton–proton collisions at 13 TeV with the ATLAS detector (ATLAS-CONF-2021-004)
- Search for Dark Matter produced in association with a Standard Model Higgs boson decaying to b-quarks using the full Run 2 collision data with the ATLAS detector (ATLAS-CONF-2021-006)
- Search for new phenomena in three- or four-lepton events in proton–proton collisions at 13 TeV with the ATLAS detector (ATLAS-CONF-2021-011)
- Search for new phenomena in final states with two leptons and one or no b-tagged jets at 13 TeV using the ATLAS detector (ATLAS-CONF-2021-012)
- Search for exotic decays of the Higgs boson to long-lived particles in proton–proton collisions at 13 TeV using displaced vertices in the ATLAS inner detector (ATLAS-CONF-2021-005)
- Search for single Vector-Like B-quark production and decay via B→bH(bb) in proton–proton collisions at 13 TeV with the ATLAS detector (ATLAS-CONF-2021-018)
- Search for lepton-flavor-violation in Z-boson decays with τ-leptons with the ATLAS detector (ATLAS-CONF-2021-017)
- Search for heavy particles in the b-tagged di-jet mass distribution with additional b-tagged jets in proton–proton collisions at 13 TeV with the ATLAS experiment (ATLAS-CONF-2021-019)
Supersymmetry
- Search for new phenomena in proton–proton collisions in final states with tau leptons, b-jets, and missing transverse momentum with the ATLAS detector (ATLAS-CONF-2021-008)
- Search for R-parity violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment using 13 TeV proton–proton collision data (ATLAS-CONF-2021-007)
- Search for long-lived charginos based on a disappearing-track signature using 136 fb-1 of proton–proton collisions at 13 TeV with the ATLAS detector (ATLAS-CONF-2021-015)
- A search for the decays of stopped long-lived particles at 13 TeV with the ATLAS detector (arXiv: 2104.03050, see figures)
Scalar boson and diboson searches
- Search for Higgs boson decays into two spin-0 particles in the bbμμ final state with the ATLAS detector in proton–proton collisions at 13 TeV (ATLAS-CONF-2021-009)
- Search for Higgs boson pair production in the two bottom quarks plus two photons final state in proton–proton collisions at 13 TeV with the ATLAS detector (ATLAS-CONF-2021-016)
