Электронный каталог

Статья

Aad, G.
Search for the Exclusive W Boson Hadronic Decays W*(*> *p&sup(*()*g, W&sup(*() *>K&sup( *() *>*r&sup(*()*g with the ATLAS Detector / G.Aad, F.Ahmadov, I.N.Aleksandrov, V.A.Bednyakov, I.R.Boyko, I.A.Budagov, G.Chelkov, A.Cheplakov, M.V.Chizhov, D.V.Dedovich, M.Demichev, A.Gongadze, M.I.Gostkin, S.N.Karpov, V.Kukhtin, E.Ladygin, V.Lyubushkin, T.Lyubushkina, S.Malyukov, M.Mineev, E.Plotnikova, I.N.Potrap, M.Shiyakova, A.Soloshenko, S.Turchikhin, T.Turtuvshin, I.Yeletskikh, A.Zhemchugov, N.I.Zimine, Y.Kulchitsky, Z.M.Karpova, [ATLAS Collab.] // Physical Review Letters [Electronic resource]. – 2024. – Vol. 133, No. 16. – P. 161804. – URL: https://doi.org/10.1103/PhysRevLett.133.161804. – Bibliogr.: 61.

A search for the exclusive hadronic decays W&sup(*() → π&sup( *()γ, W&sup(*() → K&sup(*()γ, and W&sup(*() → ρ&sup(*()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 *%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&sup(*() → π&sup(*()) < 1.9 × 10*−*6, B(W&sup(*() → K&sup(*()γ) < 1.7 × 10*−*6, B(W&sup(*() → ρ&sup(*()γ) < 5.2 × 10*−*6 at 95% confidence level.



ОИЯИ = ОИЯИ (JINR)2024