Report number
| arXiv:2110.02599 ; CMS-CR-2021-166 |
Title
| Modelling the Data at the LHC |
Related title | Modelling the data at the LHC: status and issues (overview including soft QCD and TOP)
|
Author(s)
| Yazgan, Efe (Taiwan, Natl. Taiwan U.) |
Collaboration
| ATLAS Collaboration ; CMS Collaboration |
Publication
| 2022-03-02 |
Imprint
| 2021-10-06 |
Number of pages
| 5 |
Note
| 5 pages, 2 figures, to appear in the Proceedings of Particles and
Nuclei International Conference - PANIC2021, 5-10 September, 2021 |
In:
| PoS PANIC2021 (2022) 410 |
In:
| 22nd Particles and Nuclei International Conference (PANIC 2021), Lisbon, Portugal, 5 - 10 Sep 2021, pp.410 |
DOI
| 10.22323/1.380.0410
|
Subject category
| hep-ph ; Particle Physics - Phenomenology ; hep-ex ; Particle Physics - Experiment |
Accelerator/Facility, Experiment
| CERN LHC ; ATLAS ; CMS |
Abstract
| Measurements at hadron colliders rely on large scale quantum chromodynamics (QCD) Monte Carlo (MC) production for interpretation of the data. MC simulations allow testing Standard Model (SM) with more accurate and precise calculations to understand perturbative QCD as well as electroweak effects, and extrapolations of the irreducible backgrounds to signal phase-space regions for new physics searches or for the measurements of rare SM processes. In the MC codes, there are many pieces, approximations, and parameters and settings to compare to the data and tune. Precise experimental measurements at the LHC require similar level of precision in theoretical calculations. Cross sections measured at the LHC both by ATLAS and CMS experiments cover more than 14 orders of magnitude. So far, SM cross section predictions are found to be in very good agreement with the data. These cross sections are measured at different pp collision energies and compared to prediction up to next-to-next-to-leading order (NNLO) for many processes, and recently up to N3LO for some of them. In this note, a few measurements relevant to data modelling are discussed. |
Copyright/License
| preprint: © the author(s) (License: CC-BY-NC-ND 4.0) publication: © 2022-2025 The author(s) |