{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/probing-light-fermiophobic-higgs-boson-via","title":"Probing Light Fermiophobic Higgs Boson via diphoton jets at the HL-LHC","arxiv_id":"2310.17741","date":"2023-10-26","proceeding":null,"authors":["Daohan Wang","Jin-Hwan Cho","Jinheung Kim","Soojin Lee","Prasenjit Sanyal","Jeonghyeon Song"],"abstract":"In this study, we explore the phenomenological signatures associated with a light fermiophobic Higgs boson, $h_{\\rm f}$, within the type-I two-Higgs-doublet model at the HL-LHC. Our meticulous parameter scan illuminates an intriguing mass range for $m_{h_{\\rm f}}$, spanning $[1,10]{\\;{\\rm GeV}}$. This mass range owes its viability to substantial parameter points, largely due to the inherent challenges of detecting the soft decay products of $h_{\\rm f}$ at contemporary high-energy colliders. Given that this light $h_{\\rm f}$ ensures $Br(h_{\\rm f}\\to\\gamma\\gamma)\\simeq 1$, $Br(H^\\pm \\to h_{\\rm f} W^\\pm)\\simeq 1$, and $M_{H^\\pm}\\lesssim 330{\\;{\\rm GeV}}$, we propose a golden discovery channel: $pp\\to h_{\\rm f}H^\\pm\\to \\gamma\\gamma\\gamma\\gamma \\,l^\\pm\\nu$, where $l^\\pm$ includes $e^\\pm$ and $\\mu^\\pm$. However, a significant obstacle arises as the two photons from the $h_{\\rm f}$ decay mostly merge into a single jet due to their proximity within $\\Delta R<0.4$. This results in a final state characterized by two jets, rather than four isolated photons, thus intensifying the QCD backgrounds. To tackle this, we devise a strategy within \\textsc{Delphes} to identify jets with two leading subparticles as photons, termed diphoton jets. Our thorough detector-level simulations across 18 benchmark points predominantly show signal significances exceeding the $5\\sigma$ threshold at an integrated luminosity of $3{\\;{\\rm ab}^{-1}}$. Furthermore, our approach facilitates accurate mass reconstructions for both $m_{h_{\\rm f}}$ and $M_{H^\\pm}$. Notably, in the intricate scenarios with heavy charged Higgs bosons, our application of machine learning techniques provides a significant boost in significance.","url_abs":"https://arxiv.org/abs/2310.17741v1","url_pdf":"https://arxiv.org/pdf/2310.17741v1.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"probing-light-fermiophobic-higgs-boson-via","repo_url":"https://github.com/chofchof/light-hf-ml","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":1,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"syntology_url":null,"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}