******** CTCD/NTHU HEP Seminar ********

Speaker ：Dr. Mohamed Krab (NTU)

Title ：Enhanced Charged Higgs Signal at the LHC

Time ：12:30-13:30, Thursday, 2026/4/23

Place ：R521, 5F, General Building II, Nat'l Tsing Hua Univ.

Host ： Prof. Kingman Cheung (NTHU) & Prof. Norihiro Iizuka (NTHU)

Abstract:
We investigate the discovery prospects of a charged Higgs boson (Hą) at the Large Hadron Collider (LHC) via the process cg → bHą → bcb̄ within the framework of a general two Higgs doublet model (G2HDM). In most two Higgs doublet models, the H+cb coupling (gH+cb) is usually suppressed by the CKM matrix element Vcb. In G2HDM, there are additional Yukawa couplings, the process cg → bHą → bcb̄ is enhanced by the coupling gH+cb≃& 961;tcVtb in both the production and decay of the charged Higgs boson. We study possible physics backgrounds and evaluate the discovery potential with realistic acceptance cuts and tagging efficiencies at collider energies of √s =13 and 14 TeV. We apply b-tagging and c-tagging and show that mH+ can be extracted by pairing the tagged b and c-jets. Our analysis yields promising results for both the current LHC and the expected high-luminosity LHC.