Name: ATLAS_2024_I2768921
Year: 2024
Summary: ttbar + gamma at 13 TeV
Experiment: ATLAS
Collider: LHC
Status: VALIDATED
Reentrant: true
InspireID: 2768921
Authors:
 - Carmen Diez Pardos <carmen.diez.pardos@cern.ch>
 - Stefanie Mueller <stefanie.mueller@student.uni-siegen.de>
References:
 - ATLAS-TOPQ-2018-24
 - arXiv:2403.09452 [hep-ex]
Keywords:
  - TTBAR
  - PHOTON
RunInfo:
  pp -> ttbar + photon at 13TeV
Luminosity_fb: 140.0
Beams: [p+, p+]
Energies: [13000]
Options:
 - LMODE=SINGLE,DILEPTON,ALL
Description:
    'Inclusive and differential cross-sections are measured at particle level for the associated production of a top quark pair
    and a photon ($t\bar{t}\gamma$). The analysis is performed using an integrated luminosity of 140 fb$^{-1}$ of proton-proton
    collisions at a centre-of-mass energy of 13 TeV collected by the ATLAS detector. The measurements are performed in the
    single-lepton and dilepton top quark pair decay channels focusing on $t\bar{t}\gamma$ topologies where the photon is radiated
    from an initial-state parton or one of the top quarks. The absolute and normalised differential cross-sections are measured for
    several variables characterising the photon, lepton and jet kinematics as well as the angular separation between those objects.
    The observables are found to be in good agreement with the Monte Carlo predictions. The photon transverse momentum differential
    distribution is used to set limits on effective field theory parameters related to the electroweak dipole moments of the top quark.
    The combined limits using the photon and the $Z$ boson transverse momentum measured in $t\bar{t}$ production in associations with
    a $Z$ boson are also set.'
BibKey: ATLAS:2024hmk
BibTeX: '@article{ATLAS:2024hmk,
    author = "Aad, Georges and others",
    collaboration = "ATLAS",
    title = "{Measurements of inclusive and differential cross-sections of $t\bar{t}\gamma$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector}",
    eprint = "2403.09452",
    archivePrefix = "arXiv",
    primaryClass = "hep-ex",
    reportNumber = "CERN-EP-2024-052",
    month = "3",
    year = "2024"
}'
ReleaseTests:
 - $A pp-13000-ttbargamma-dl
 - $A-2 pp-13000-ttbargamma-sl
