Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/106909
Title: | Measurements of inclusive and differential fiducial cross-sections of tt¯ γ production in leptonic final states at √s=13TeV in ATLAS | Authors: | Santos, S. P. Amor dos Fiolhais, M. C. N. Galhardo, B. Veloso, F. Wolters, H. ATLAS Collaboration |
Issue Date: | 2019 | Publisher: | Springer Nature | Serial title, monograph or event: | European Physical Journal C | Volume: | 79 | Issue: | 5 | Abstract: | Inclusive and differential cross-sections for the production of a top-quark pair in association with a photon are measured with proton-proton collision data corresponding to an integrated luminosity of 36.1 fb-1, collected by the ATLAS detector at the LHC in 2015 and 2016 at a centre-of-mass energy of 13 TeV. The measurements are performed in single-lepton and dilepton final states in a fiducial volume. Events with exactly one photon, one or two leptons, a channel-dependent minimum number of jets, and at least one b-jet are selected. Neural network algorithms are used to separate the signal from the backgrounds. The fiducial cross-sections are measured to be 521±9(stat.)±41(sys.)fb and 69±3(stat.)±4(sys.)fb for the single-lepton and dilepton channels, respectively. The differential cross-sections are measured as a function of photon transverse momentum, photon absolute pseudorapidity, and angular distance between the photon and its closest lepton in both channels, as well as azimuthal opening angle and absolute pseudorapidity difference between the two leptons in the dilepton channel. All measurements are in agreement with the theoretical predictions. | URI: | https://hdl.handle.net/10316/106909 | DOI: | 10.1140/epjc/s10052-019-6849-6 | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Measurements-of-inclusive-and-differential-fiducial-crosssections-of-tt--production-in-leptonic-final-states-at-s13TeV-in-ATLASEuropean-Physical-Journal-C.pdf | 2.2 MB | Adobe PDF | View/Open |
SCOPUSTM
Citations
37
checked on Apr 22, 2024
WEB OF SCIENCETM
Citations
23
checked on Apr 2, 2024
Page view(s)
42
checked on Apr 23, 2024
Download(s)
18
checked on Apr 23, 2024
Google ScholarTM
Check
Altmetric
Altmetric
This item is licensed under a Creative Commons License