Search for the Exclusive π‘Š Boson Hadronic Decays π‘ŠΒ±β†’πœ‹Β±β’π›Ύ, π‘ŠΒ±β†’πΎΒ±β’π›Ύ and π‘ŠΒ±β†’πœŒΒ±β’π›Ύ with the ATLAS Detector

ATLAS Collaboration, S. Alderweireldt, J.F. Allen, T.M. Carter, P. J. Clark, D. Duda, S. M. Farrington, Y. Gao, J.M. Gargan, R.Y. Gonzalez Andana, C. Leonidopoulos, V. J. Martin, L. Mijović, V.A. Parrish, E.A. Pender, T. Qiu, E.P. Takeva, N. Themistokleous, E.M. Villhauer, B.M. WynneZ. Xu, E. Zaid

Research output: Contribution to journal β€Ί Article β€Ί peer-review

Abstract

A search for the exclusive hadronic decays π‘ŠΒ±β†’πœ‹Β±β’π›Ύ, π‘ŠΒ± →𝐾±⁒𝛾, and π‘ŠΒ± β†’πœŒΒ±β’π›Ύ is performed using up to 140  fbβˆ’1 of proton-proton collisions recorded with the ATLAS detector at a center-of-mass energy of βˆšπ‘  =13  TeV. If observed, these rare processes would provide a unique test bench for the quantum chromodynamics factorization formalism used to calculate cross sections at colliders. Additionally, at future colliders, these decays could offer a new way to measure the π‘Š boson mass through fully reconstructed decay products. The search results in the most stringent upper limits to date on the branching fractions ℬ⁑(π‘ŠΒ±β†’πœ‹Β±β’π›Ύ)<1.9Γ—10βˆ’6, ℬ⁑(π‘ŠΒ±β†’πΎΒ±β’π›Ύ)<1.7Γ—10βˆ’6, ℬ⁑(π‘ŠΒ±β†’πœŒΒ±β’π›Ύ)<5.2Γ—10βˆ’6 at 95% confidence level.
Original languageEnglish
Article number161804
Pages (from-to)1-23
Number of pages23
JournalPhysical Review Letters
Volume133
Issue number16
Early online date17 Oct 2024
DOIs
Publication statusPublished - 18 Oct 2024

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