TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.18.010
TI  - 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
PY  - 2026/01/29
UR  - https://scipost.org/SciPostPhysProc.18.010
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 18
SP  - 010
A1  - Diez Pardos, Carmen
AB  - Cross-section measurements of the associated production of a top quark pair and a photon ($t\bar{t}\gamma$) are performed with 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 at the LHC. The measurement focuses on $t\bar{t}\gamma$ topologies where the photon is radiated from an initial-state parton or one of the top quarks. The differential cross-sections are measured for variables characterising the photon, lepton and jet kinematic properties. The distribution of the photon transverse momentum is used to constrain effective field theory operators related to the electroweak dipole moments of the top quark.
ER  -

@Article{10.21468/SciPostPhysProc.18.010,
	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}},
	author={Carmen Diez Pardos and on behalf of the ATLAS collaboration},
	journal={SciPost Phys. Proc.},
	pages={010},
	year={2026},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.18.010},
	url={https://scipost.org/10.21468/SciPostPhysProc.18.010},
}