PoS - Proceedings of Science
Volume 398 - The European Physical Society Conference on High Energy Physics (EPS-HEP2021) - T07: Top and Electroweak Physics
Evidence for four-top-quarks production with the ATLAS detector at the Large Hadron Collider
P. Sabatini
Full text: Not available
Abstract
The outstanding performance of the LHC during Run~2 data taking let the ATLAS Experiment to collect a massive dataset of ${p}{p}$ collision at $\sqrt{s}=13$ TeV. This impressive availability of data to analyse paves the way to the research of rare events, as test of the Standard Model validity. One of the most interesting process is the production of $t\bar{t}t\bar{t}$, an ultra rare process predicted by the Standard Model and very sensitive to new physics contribution. The ATLAS experiment has targeted the measurement of this process in two separate analyses, focused in two different detection channels. These analyses led to the first evidence of $t\bar{t}t\bar{t}$ production with an observed (expected) significance of $4.7$ ($2.6$) standard deviations in their combination.
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.