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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
Authors
G. Aad
B. Abbott
+10 more
D.C Abbott
A. Abed Abud
K. Abeling
D.K. Abhayasinghe
S.H. Abidi
O.S AbouZeid
N.L Abraham .
H Abramowicz
H Abreu
Y. Abulaiti
Publication date
1 March 2020
Publisher
'Springer Fachmedien Wiesbaden GmbH'
Abstract
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.] © 2020, The Author(s).Indexación: Scopu
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Repositorio Institucional Académico Universidad Andrés Bello
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Last time updated on 19/03/2022