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Measurement of the inclusive tt̄ production cross section in the lepton + jets channel in p p collisions at √ s = 7 TeV with the ATLAS detector using support vector machines
Journal article   Open access   Peer reviewed

Measurement of the inclusive tt̄ production cross section in the lepton + jets channel in p p collisions at √ s = 7 TeV with the ATLAS detector using support vector machines

ATLAS Collaboration, J R Bensinger, C Blocker and G Sciolla
Physical review. D, Particles, fields, gravitation, and cosmology, Vol.108
08/01/2023
DOI: https://doi.org/10.1103/PhysRevD.108.032014
Handle:
https://hdl.handle.net/10192/64013

Abstract

Particle production Top quark Hadron colliders
A measurement of the top quark pair-production cross section in the lepton þ jets decay channel is presented. It is based on 4.6 fb−1 of √s= 7 TeV pp collision data collected during 2011 by the ATLAS experiment at the CERN Large Hadron Collider. A three-class, multidimensional event classifier based on support vector machines is used to differentiate t ̄t events from backgrounds. The t ̄t production cross section is found to be σ ̄ 1⁄4 168.5 0.7ðstatÞ þ6.2 ðsystÞ þ3.4 ðlumiÞ pb. The result is consistent with the Standard tt −5.9 −3.2 Model prediction based on QCD calculations at next-to-next-to-leading order.
url
https://doi.org/10.1103/PhysRevD.108.032014View
Published (Version of record) Open CC BY V4.0

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