@article{eff1c6095b7c44f68727552ecbf015a3,
title = "Search for short- and long-lived axion-like particles in H→aa→4γ decays with the ATLAS experiment at the LHC",
abstract = "Presented is the search for anomalous Higgs boson decays into two axion-like particles (ALPs) using the full Run 2 data set of 140fb-1 of proton-proton collisions at a centre-of-mass energy of 13TeV recorded by the ATLAS experiment. The ALPs are assumed to decay into two photons, providing sensitivity to recently proposed models that could explain the (g-2)μ discrepancy. This analysis covers an ALP mass range from 100 to 62GeV and ALP-photon couplings in the range 10-7TeV-1<Caγγ/Λ<1TeV-1, and therefore includes signatures with significantly displaced vertices and highly collinear photons. No significant excess of events above the Standard Model background is observed. Upper limits at 95% confidence level are placed on the branching ratio of the Higgs boson to two ALPs in the four-photon final state, and are in the range of 10-5 to 3×10-2, depending on the hypothesized ALP mass and ALP-photon coupling strength.",
author = "G. Aad and B. Abbott and K. Abeling and Abicht, {N. J.} and Abidi, {S. H.} and A. Aboulhorma and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, {B. S.} and Bourdarios, {C. Adam} and L. Adamczyk and Addepalli, {S. V.} and Addison, {M. J.} and J. Adelman and A. Adiguzel and T. Adye and Affolder, {A. A.} and Y. Afik and Agaras, {M. N.} and J. Agarwala and A. Aggarwal and C. Agheorghiesei and A. Ahmad and F. Ahmadov and Ahmed, {W. S.} and S. Ahuja and X. Ai and G. Aielli and A. Aikot and C. Appelt and L. Barak and U. Barron and G. Bella and Y. Benhammou and Biswal, {J. P.} and B. Chen and H. Cohen and E. Etzion and Frid, {Y. Y.} and G. Koren and O. Kuprash and Lutz, {M. S.} and R. Nayak and G. Ninio and Dominguez, {L. Pascual} and D. Reikher and A. Soffer and Tamir, {N. M.} and D. Vannicola and Tamlihat, {M. Ait} and B. Aitbenchikh and I. Aizenberg and M. Akbiyik and {\AA}kesson, {T. P.A.} and Akimov, {A. V.} and D. Akiyama and Akolkar, {N. N.} and Khoury, {K. Al} and Alberghi, {G. L.} and J. Albert and P. Albicocco and Albouy, {G. L.} and S. Alderweireldt and S. Istin and E. Kajomovitz and L. Moleri and Seabra, {L. F.Oleiro} and Y. Rozen and S. Tarem",
note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",
year = "2024",
month = jul,
doi = "https://doi.org/10.1140/epjc/s10052-024-12979-0",
language = "الإنجليزيّة",
volume = "84",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer Nature",
number = "7",
}