Search for a heavy charged Higgs boson decaying into a W boson and a Higgs boson in final states with leptons and b -jets in s = 13 TeV pp collisions with the ATLAS detector

Search for a heavy charged Higgs boson decaying into a W boson and a Higgs boson in final states with leptons and b -jets in s = 13 TeV pp collisions with the ATLAS detector

This article presents a search for a heavy charged Higgs boson produced in association with a top quark and a bottom quark, and decaying into a W boson and a 125 GeV Higgs boson h. The search is performed in final states with one charged lepton, missing transverse momentum, and jets using proton-pro...

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Main Authors: Aad, G, Aakvaag, E, Abbott, B, Abdelhameed, S, Abeling, K, Abicht, NJ, Abidi, SH, Aboelela, M, Aboulhorma, A, Abramowicz, H, Abulaiti, Y, Acharya, BS, Ackermann, A, Adam Bourdarios, C, Adamczyk, L, Addepalli, SV, Addison, MJ, Adelman, J, Adiguzel, A, Adye, T, Affolder, AA, Afik, Y, Agaras, MN, Aggarwal, A, Barr, AJ, Bortoletto, D, Bruckler, TL, Chen, M, Conroy, EI, Cooper-Sarkar, AM, Dingley, T, Draguet, MA, Eberwein, GH, Frost, JA, Gallas, EJ, Grabarczyk, RP, Gwenlan, C, Haslbeck, F, Hays, CP, Hodkinson, BH, Huffman, TB, Iizawa, T, Karava, K, Koch, SF, Moser, B, Nagai, K, Nedic, L, Nickerson, RB, Pacey, HA, Rossi, E, Ruggiero, A, Shipsey, IPJ, Sultan, DMS, Viehhauser, GHA, Weidberg, AR, Yildirim, TP
Format: Journal article
Sprog:English
Udgivet: Springer 2025
Beskrivelse
Summary:This article presents a search for a heavy charged Higgs boson produced in association with a top quark and a bottom quark, and decaying into a W boson and a 125 GeV Higgs boson h. The search is performed in final states with one charged lepton, missing transverse momentum, and jets using proton-proton collision data at s = 13 TeV recorded with the ATLAS detector during Run 2 of the LHC at CERN. This data set corresponds to a total integrated luminosity of 140 fb−1. The search is conducted by examining the reconstructed invariant mass distribution of the Wh candidates for evidence of a localised excess in the charged Higgs boson mass range from 250 GeV to 3 TeV. No significant excess of data over the expected background is observed and 95% confidence-level upper limits between 2.8 pb and 1.2 fb are placed on the production cross-section times branching ratio for charged Higgs bosons decaying into Wh.

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