Vincent Hedberg
Senior lecturer
Search for new resonances in mass distributions of jet pairs using 139 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector
Author
Summary, in English
A search for new resonances decaying into a pair of jets is reported using the dataset of proton-proton collisions recorded at s = 13 TeV with the ATLAS detector at the Large Hadron Collider between 2015 and 2018, corresponding to an integrated luminosity of 139 fb−1. The distribution of the invariant mass of the two leading jets is examined for local excesses above a data-derived estimate of the Standard Model background. In addition to an inclusive dijet search, events with jets identified as containing b-hadrons are examined specifically. No significant excess of events above the smoothly falling background spectra is observed. The results are used to set cross-section upper limits at 95% confidence level on a range of new physics scenarios. Model-independent limits on Gaussian-shaped signals are also reported. The analysis looking at jets containing b-hadrons benefits from improvements in the jet flavour identification at high transverse momentum, which increases its sensitivity relative to the previous analysis beyond that expected from the higher integrated luminosity. [Figure not available: see fulltext.]
Department/s
- Particle and nuclear physics
- eSSENCE: The e-Science Collaboration
Publishing year
2020-03-25
Language
English
Publication/Series
Journal of High Energy Physics
Volume
2020
Issue
3
Document type
Journal article
Publisher
Springer
Topic
- Subatomic Physics
Keywords
- Exotics
- Hadron-Hadron scattering (experiments)
- Jets
Status
Published
ISBN/ISSN/Other
- ISSN: 1029-8479