Combination of searches for Higgs boson decays into a photon and a massless dark photon using pp collisions at s= 13 TeV with the ATLAS detector
journal contribution
posted on 2025-05-09, 09:44 authored by G Aad, E Aakvaag, B Abbott, S Abdelhameed, K Abeling, NJ Abicht, SH Abidi, M Aboelela, A Aboulhorma, H Abramowicz, H Abreu, Y Abulaiti, BS Acharya, A Ackermann, C Adam Bourdarios, L Adamczyk, SV Addepalli, MJ Addison, J Adelman, A Adiguzel, T Adye, AA Affolder, Y Afik, MN Agaras, J Agarwala, A Aggarwal, C Agheorghiesei, F Ahmadov, WS Ahmed, S Ahuja, X Ai, G Aielli, A Aikot, M Ait Tamlihat, B Aitbenchikh, M Akbiyik, TPA Åkesson, AV Akimov, D Akiyama, NN Akolkar, S Aktas, K Al Khoury, GL Alberghi, J Albert, P Albicocco, GL Albouy, S Alderweireldt, ZL Alegria, M Aleksa, IN Aleksandrov, C Alexa, T Alexopoulos, F Alfonsi, M Algren, M Alhroob, B Ali, HMJ Ali, S Ali, SW Alibocus, M Aliev, G Alimonti, W Alkakhi, C Allaire, Benedict AllbrookeBenedict Allbrooke, JF Allen, CA Allendes Flores, PP Allport, A Aloisio, F Alonso, C Alpigiani, ZMK Alsolami, M Alvarez Estevez, A Alvarez Fernandez, M Alves Cardoso, MG Alviggi, M Aly, Y Amaral Coutinho, A Ambler, C Amelung, M Amerl, CG Ames, D Amidei, B Amini, KJ Amirie, SP Amor Dos Santos, KR Amos, D Amperiadou, S An, V Ananiev, C Anastopoulos, T Andeen, JK Anders, AC Anderson, SY Andrean, A Andreazza, S Angelidakis, A Angerami, AV Anisenkov, A Annovi, C AntelA combination of searches for Higgs boson decays into a visible photon and a massless dark photon (H → γγd) is presented using 139 fb−1 of proton-proton collision data at a centre-of-mass energy of s = 13 TeV recorded by the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on the Standard Model Higgs boson decay branching ratio is determined to be B(H → γγd) < 1.3% (1.5)%. The search is also sensitive to higher-mass Higgs bosons decaying into the same final state. The observed (expected) 95% confidence level limit on the cross-section times branching ratio ranges from 16 fb (20 fb) for mH = 400 GeV to 1.0 fb (1.5 fb) for mH = 3 TeV. Results are also interpreted in the context of a minimal simplified model.
History
Publication status
- Published
File Version
- Published version
Journal
Journal of High Energy PhysicsISSN
1126-6708Publisher
Springer Science and Business Media LLCPublisher URL
External DOI
Issue
8Volume
2024Article number
153Department affiliated with
- Physics and Astronomy Publications
Institution
University of SussexFull text available
- Yes
Peer reviewed?
- Yes
