Search for the associated production of charm quarks and a Higgs boson decaying into a photon pair with the ATLAS detector



Aad, G, Aakvaag, E, Abbott, B, Abdelhameed, S, Abeling, K, Abicht, NJ, Abidi, SH, Aboelela, M, Aboulhorma, A, Abramowicz, H
et al (show 2892 more authors) (2025) Search for the associated production of charm quarks and a Higgs boson decaying into a photon pair with the ATLAS detector JOURNAL OF HIGH ENERGY PHYSICS, 2025 (2). 45-. ISSN 1126-6708, 1029-8479

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Abstract

A search for the production of a Higgs boson and one or more charm quarks, in which the Higgs boson decays into a photon pair, is presented. This search uses proton-proton collision data with a centre-of-mass energy of s = 13 TeV and an integrated luminosity of 140 fb−1 recorded by the ATLAS detector at the Large Hadron Collider. The analysis relies on the identification of charm-quark-containing jets, and adopts an approach based on Gaussian process regression to model the non-resonant di-photon background. The observed (expected, assuming the Standard Model signal) upper limit at the 95% confidence level on the cross-section for producing a Higgs boson and at least one charm-quark-containing jet that passes a fiducial selection is found to be 10.6 pb (8.8 pb). The observed (expected) measured cross-section for this process is 5.3 ± 3.2 pb (2.9 ± 3.1 pb).

Item Type: Article
Uncontrolled Keywords: Hadron-Hadron Scattering, Higgs Physics
Divisions: Faculty of Science & Engineering
Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 19 Feb 2025 11:25
Last Modified: 23 May 2026 09:48
DOI: 10.1007/JHEP02(2025)045
Open Access URL: https://link.springer.com/article/10.1007/JHEP02(2...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3190392
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