Observation of tt¯γγ production at s=13 TeV with the ATLAS detector
Publication
, Journal Article
Aad, G; Aakvaag, E; Abbott, B; Abdelhameed, S; Abeling, K; Abicht, NJ; Abidi, SH; Aboelela, M; Aboulhorma, A; Abramowicz, H; Abulaiti, Y ...
Published in: Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
March 1, 2026
This paper presents the first observation of top-quark pair production in association with two photons (tt¯γγ). The measurement is performed in the single-lepton decay channel using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider. The data correspond to an integrated luminosity of 140 fb−1 recorded during Run 2 at a centre-of-mass energy of 13 TeV. The tt¯γγ production cross section, measured in a fiducial phase space based on particle-level kinematic criteria for the lepton, photons, and jets, is found to be 2.42
Duke Scholars
Published In
Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
DOI
ISSN
0370-2693
Publication Date
March 1, 2026
Volume
874
Related Subject Headings
- Nuclear & Particles Physics
- 51 Physical sciences
- 49 Mathematical sciences
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Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N. J., … Aoki, M. (2026). Observation of tt¯γγ production at s=13 TeV with the ATLAS detector. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 874. https://doi.org/10.1016/j.physletb.2026.140195
Aad, G., E. Aakvaag, B. Abbott, S. Abdelhameed, K. Abeling, N. J. Abicht, S. H. Abidi, et al. “Observation of tt¯γγ production at s=13 TeV with the ATLAS detector.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics 874 (March 1, 2026). https://doi.org/10.1016/j.physletb.2026.140195.
Aad G, Aakvaag E, Abbott B, Abdelhameed S, Abeling K, Abicht NJ, et al. Observation of tt¯γγ production at s=13 TeV with the ATLAS detector. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2026 Mar 1;874.
Aad, G., et al. “Observation of tt¯γγ production at s=13 TeV with the ATLAS detector.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, vol. 874, Mar. 2026. Scopus, doi:10.1016/j.physletb.2026.140195.
Aad G, Aakvaag E, Abbott B, Abdelhameed S, Abeling K, Abicht NJ, Abidi SH, Aboelela M, Aboulhorma A, Abramowicz H, Abulaiti Y, Acharya BS, Ackermann A, Bourdarios CA, Adamczyk L, Addepalli SV, Addison MJ, Adelman J, Adiguzel A, Adye T, Affolder AA, Afik Y, Agaras MN, Aggarwal A, Agheorghiesei C, Ahmadov F, Ahuja S, Ai X, Aielli G, Aikot A, Tamlihat MA, Aitbenchikh B, Akbiyik M, åkesson TPA, Akimov AV, Akiyama D, Akolkar NN, Aktas S, Alberghi GL, Albert J, Alberti U, Albicocco P, Albouy GL, Alderweireldt S, Alegria ZL, Aleksa M, Aleksandrov IN, Alexa C, Alexopoulos T, Alfonsi F, Algren M, Alhroob M, Ali B, Ali HMJ, Ali S, Alibocus SW, Aliev M, Alimonti G, Alkakhi W, Allaire C, Allbrooke BMM, Allen JS, Allen JF, Allport PP, Aloisio A, Alonso F, Alpigiani C, Alsolami ZMK, Fernandez AA, Alves Cardoso M, Alviggi MG, Aly M, Coutinho YA, Ambler A, Amelung C, Amerl M, Ames CG, Amezza T, Amidei D, Amini B, Amirie K, Amirkhanov A, Amor Dos Santos SP, Amos KR, Amperiadou D, An S, Anastopoulos C, Andeen T, Anders JK, Anderson AC, Andreazza A, Angelidakis S, Angerami A, Anisenkov AV, Annovi A, Antel C, Antipov E, Antonelli M, Anulli F, Aoki M. Observation of tt¯γγ production at s=13 TeV with the ATLAS detector. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2026 Mar 1;874.
Published In
Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
DOI
ISSN
0370-2693
Publication Date
March 1, 2026
Volume
874
Related Subject Headings
- Nuclear & Particles Physics
- 51 Physical sciences
- 49 Mathematical sciences