Determination of the Relative Sign of the Higgs Boson Couplings to W and Z Bosons Using WH Production via Vector-Boson Fusion with the ATLAS Detector
journal contribution
posted on 2025-05-09, 14:04 authored by G Aad, B Abbott, K Abeling, NJ Abicht, SH Abidi, A Aboulhorma, H Abramowicz, H Abreu, Y Abulaiti, BS Acharya, CA Bourdarios, L Adamczyk, SV Addepalli, MJ Addison, J Adelman, A Adiguzel, T Adye, AA Affolder, Y Afik, MN Agaras, J Agarwala, A Aggarwal, C Agheorghiesei, A Ahmad, F Ahmadov, WS Ahmed, S Ahuja, X Ai, G Aielli, A Aikot, MA Tamlihat, B Aitbenchikh, I Aizenberg, M Akbiyik, TPA Åkesson, AV Akimov, D Akiyama, NN Akolkar, S Aktas, K Al Khoury, GL Alberghi, J Albert, P Albicocco, GL Albouy, S Alderweireldt, ZL Alegria, M Aleksa, IN Aleksandrov, C Alexa, T Alexopoulos, F Alfonsi, M Algren, M Alhroob, B Ali, HMJ Ali, S Ali, SW Alibocus, M Aliev, G Alimonti, W Alkakhi, C Allaire, Benedict AllbrookeBenedict Allbrooke, JF Allen, CAA Flores, PP Allport, A Aloisio, F Alonso, C Alpigiani, MA Estevez, AA Fernandez, MA Cardoso, MG Alviggi, M Aly, YA Coutinho, A Ambler, C Amelung, M Amerl, CG Ames, D Amidei, SPA Dos Santos, KR Amos, V Ananiev, C Anastopoulos, T Andeen, JK Anders, SY Andrean, A Andreazza, S Angelidakis, A Angerami, AV Anisenkov, A Annovi, C Antel, MT Anthony, E Antipov, M Antonelli, F Anulli, M Aoki, T Aoki, JAA Pozo, MA AparoThe associated production of Higgs and W bosons via vector-boson fusion is highly sensitive to the relative sign of the Higgs boson couplings to W and Z bosons. In this Letter, two searches for this process are presented, using 140 fb−1 of proton-proton collision data at √s = 13 TeV recorded by the ATLAS detector at the LHC. The first search targets scenarios with opposite-sign couplings of the W and Z bosons to the Higgs boson, while the second targets standard model-like scenarios with same-sign couplings. Both analyses consider Higgs boson decays into a pair of b quarks and W boson decays with an electron or muon. The data exclude the opposite-sign coupling hypothesis with a significance beyond 5σ, and the observed (expected) upper limit set on the cross section for vector-boson fusion WH production is 9.0 (8.7) times the standard model value at 95% confidence level.
History
Publication status
- Published
File Version
- Published version
Journal
Physical Review LettersISSN
0031-9007Publisher
American Physical Society (APS)Publisher URL
External DOI
Issue
14Volume
133Article number
141801Department affiliated with
- Physics and Astronomy Publications
Institution
University of SussexFull text available
- Yes
Peer reviewed?
- Yes
