A search for the exclusive hadronic decays W^{±}→π^{±}γ, W^{±}→K^{±}γ, and W^{±}→ρ^{±}γ is performed using up to 140  fb^{-1} of proton-proton collisions recorded with the ATLAS detector at a center-of-mass energy of sqrt[s]=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 W boson mass through fully reconstructed decay products. The search results in the most stringent upper limits to date on the branching fractions B(W^{±}→π^{±}γ)<1.9×10^{-6}, B(W^{±}→K^{±}γ)<1.7×10^{-6}, B(W^{±}→ρ^{±}γ)<5.2×10^{-6} at 95% confidence level.

Aad, G., Abbott, B., Abeling, K., Abicht, N.?., Abidi, S.?., Aboulhorma, A., et al. (2024). Search for the Exclusive Boson Hadronic Decays , and with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 133(16), 1-23 [10.1103/physrevlett.133.161804].

Search for the Exclusive Boson Hadronic Decays , and with the ATLAS Detector

F. Alfonsi;E. Ballabene;L. Bellagamba;G. Bianco;D. Boscherini;A. Bruni;G. Carratta;D. Cremonini;S. De Castro;F. Fabbri;L. Fabbri;M. Franchini;A. Gabrielli;B. Giacobbe;F. Lasagni Manghi;L. Massa;S. Monzani;A. Polini;L. Rinaldi;M. Romano;C. Sbarra;A. Sbrizzi;N. Semprini-Cesari;M. Sioli;K. Todome;S. Valentinetti;M. Villa;C. Vittori;I. Vivarelli;A. Zoccoli;
2024

Abstract

A search for the exclusive hadronic decays W^{±}→π^{±}γ, W^{±}→K^{±}γ, and W^{±}→ρ^{±}γ is performed using up to 140  fb^{-1} of proton-proton collisions recorded with the ATLAS detector at a center-of-mass energy of sqrt[s]=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 W boson mass through fully reconstructed decay products. The search results in the most stringent upper limits to date on the branching fractions B(W^{±}→π^{±}γ)<1.9×10^{-6}, B(W^{±}→K^{±}γ)<1.7×10^{-6}, B(W^{±}→ρ^{±}γ)<5.2×10^{-6} at 95% confidence level.
2024
Aad, G., Abbott, B., Abeling, K., Abicht, N.?., Abidi, S.?., Aboulhorma, A., et al. (2024). Search for the Exclusive Boson Hadronic Decays , and with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 133(16), 1-23 [10.1103/physrevlett.133.161804].
Aad, G.; Abbott, B.; Abeling, K.; Abicht, N. ???J.; Abidi, S. ???H.; Aboulhorma, A.; Abramowicz, H.; Abreu, H.; Abulaiti, Y.; Acharya, B. ???S.; Adam ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1003578
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