| ATLAS Slides | |
| Report number | ATL-PHYS-SLIDE-2024-381 |
| Title | Missing Transverse Momentum Performance at ATLAS |
| Author(s) | Rutherford Colmenares, Sebastian (University of Cambridge (GB)) ; Pacey, Holly (University of Oxford (GB)) |
| Corporate author(s) | The ATLAS collaboration |
| Collaboration | ATLAS Collaboration |
| Submitted to | BOOST 2024 - 16th International Workshop on Boosted Object Phenomenology, Reconstruction, Measurements, and Searches at Colliders, Genova, It, 29 Jul - 2 Sep 2024 |
| Submitted by | [email protected] on 04 Sep 2024 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LHC ; ATLAS |
| Free keywords | missing transverse momentum ; track soft term ; JETETMISS |
| Abstract | This poster presents the reconstruction of missing transverse momentum ($\mathrm{p}_{\mathrm{T}}^{\mathrm{miss}}$) in proton-proton collisions, in Run-2 data-taking at the ATLAS experiment. This is a challenging task involving many detector inputs, combining fully calibrated electrons, muons, photons, hadronically decaying $\tau$-leptons, hadronic jets, and soft activity from remaining tracks. Several $\mathrm{p}_{\mathrm{T}}^{\mathrm{miss}}$ 'working points' are defined with varying stringency of selections, which balance improving resolution or bias. The $\mathrm{p}_{\mathrm{T}}^{\mathrm{miss}}$ performance is evaluated using data and Monte Carlo simulation, primarily using events consistent with leptonic $Z$ and semileptonic $t\bar{t}$ decays. Finally, methods used to calculate systematic uncertainties on the soft $\mathrm{p}_{\mathrm{T}}^{\mathrm{miss}}$ component are presented, including recent progress on a novel approach to fully calibrate the soft term. |
Record created 2024-09-04, last modified 2024-09-05
PDF