Typ

CONF-Note

Gebiet

ATLAS

Autor

A. Aaboud, …, P. Bauer et al. (für die ATLAS-Kollaboration)

Titel

Search for scalar leptoquarks in the btautau final state in pp collisions at sqrts = 13TeV with the ATLAS detector

Datum

2022-07

Reportnummer

ATLAS-CONF-2022-037

Kurzfassung

A search for singly-produced scalar leptoquarks decaying to bτ in proton-proton collisions is performed using Run 2 data from the Large Hadron Collider corresponding to an integrated luminosity of 139 fb−1 at s√=13 TeV recorded by the ATLAS detector. The signal benchmark model considered is a scalar leptoquark with an electric charge of 4/3e and quantum numbers 3B+L=−2 , which decays exclusively into a b-quark and a τ -lepton. The mass range explored is from 0.4 TeV to 2.5 TeV. No significant excess above the Standard Model prediction is observed, and 95% confidence-level upper limits are set on the production cross-section times branching fraction of leptoquarks decaying to bτ . Considering both single and pair leptoquark production processes, under the assumption of exclusive decays of scalar leptoquarks to bτ , leptoquark masses below 1.26 TeV, 1.30 TeV and 1.41 TeV are excluded for a scalar leptoquark Yukawa coupling to b -quark and τ -lepton of 1.0, 1.7 and 2.5, respectively.

Link

https://cds.cern.ch/record/2815283