Search for; ; γ; H; ; production and constraints on the Yukawa couplings of light quarks to the Higgs boson Journal Article uri icon

Overview

abstract

  • ; A search for; ; γ; H; ; production is performed with data from the CMS experiment at the LHC corresponding to an integrated luminosity of; ; 138;  ;  ; ; fb; ; −; 1; ; ; ; at a proton-proton center-of-mass collision energy of; ; ; 13;  ;  ; TeV; ; ; . The analysis focuses on the topology of a boosted Higgs boson recoiling against a high-energy photon. The final states of; ; H; →; ; b; ; b; ¯; ; ; ; and; ; H; →; 4; ℓ; ; are analyzed. This study examines effective; ; H; Z; γ; ; and; ; H; γ; γ; ; anomalous couplings within the context of an effective field theory. In this approach, the production cross section is constrained to be; ; ; σ; ; γ; H; ; ; <; 16.4;  ;  ; fb; ; at 95% confidence level (CL). Simultaneous constraints on four anomalous couplings involving; ; H; Z; γ; ; and; ; H; γ; γ; ; are provided. Additionally, the production rate for; ; H; →; 4; ℓ; ; is examined to assess potential enhancements in the Yukawa couplings between light quarks and the Higgs boson. Assuming the standard model values for the Yukawa couplings of the bottom and top quarks, the following simultaneous constraints are obtained:; ; ; κ; u; ; =; (; 0.0; ±; 1.5; ); ×; ; 10; 3; ; ; ,; ; ; κ; d; ; =; (; ; 0.0; ; −; 6.8; ; ; +; 6.7; ; ; ); ×; ; 10; 2; ; ; ,; ; ; κ; s; ; =; ; 0; ; −; 32; ; ; +; 30; ; ; ; , and; ; ; κ; c; ; =; ; 0.0; ; −; 2.8; ; ; +; 2.3; ; ; ; . This rules out the hypothesis that up- or down-type quarks in the first or second generation have the same Yukawa couplings as those in the third generation, with a CL greater than 95%.;

publication date

  • December 1, 2025

Date in CU Experts

  • December 10, 2025 5:48 AM

Full Author List

  • Chekhovsky V; Hayrapetyan A; Makarenko V; Tumasyan A; Adam W; Andrejkovic JW; Benato L; Bergauer T; Chatterjee S; Damanakis K

author count

  • 2385

Other Profiles

International Standard Serial Number (ISSN)

  • 2470-0010

Electronic International Standard Serial Number (EISSN)

  • 2470-0029

Additional Document Info

volume

  • 112

issue

  • 11

number

  • 112001