Probing heavy charged Higgs bosons at gamma-gamma colliders using a multivariate technique  

作　　者：Ijaz Ahmed Abdul Quddus Jamil Muhammad Muhammad Shoaib Saba Shafaq 

机构地区：[1]Federal Urdu University of Arts,Science and Technology,Islamabad Pakistan [2]Sang-Ho College,and Department of Physics,Konkuk University,Seoul 05029,South Korea [3]Institute of Physics(IoP),The Islamia University of Bahawalpur,Bahawalpur 63100,Pakistan [4]International Islamic University Islamabad Pakistan,Pakistan

出　　处：《Chinese Physics C》2025年第4期16-27,共12页中国物理C(英文版)

基　　金：Supported by the Simons Foundation and member institutions。

摘　　要：This study explores the production of charged Higgs particles through photon-photon collisions within the context of the Two Higgs Doublet Model,including one-loop-level scattering amplitudes of electroweak and QED radiation.The cross-section has been scanned for the plane(m_(φ^(0)),√s)to investigate the process ofγγ→H^(+)H^(-).Three particular numerical scenarios,i.e.,low-,non-alignment,and short-cascade are employed.The decay channels for charged Higgs particles are examined using h^(0)for low-m_(H^(0))and H^(0)for non-alignment and short-cascade scenarios incorporating the new experimental and theoretical constraints along with the analysis for cross-sections.We find that,at a low energy,the cross-section is consistently higher for all scenarios.However,as√s increases,it reaches a peak value at 1 TeV for all benchmark scenarios.The branching ratio of the decay channels indicates that for non-alignment,the mode of decay W^(±)h^(0)takes control,and for a short cascade,the prominent decay mode remains tb,whereas in the low-scenario,the dominant decay channel is of W^(±)h^(0).In our research,we employ contemporary machine-learning methodologies to investigate the production of high-energy Higgs bosons within a 3.0 TeVγγcollider.We have used multivariate approaches such as Boosted Decision Trees(BDT),LikelihoodD,and Multilayer Perceptron(MLP)to show the observability of heavy-charged Higgs Bosons versus the most significant Standard Model backgrounds.The purity of the signal efficiency and background rejection are measured for each cut value.

关 键 词：LHC CMS charged Higgs 2HDM gamma-gamma collider MULTIVARIATE ILC CLIC ANN 

分 类 号：O572.2[理学—粒子物理与原子核物理]