Measurement of the radiative decay width Γ[Λ(1520)→Λγ] with the SPHINX spectrometer

2004/06/30 by Yu.M. Antipov, Yu. M. Antipov, A. V. Artamonov +35 · 6 citations
Physics and Astronomy · #Nuclear physics research studies #Optics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Radiative transfer #hep-ex

paper · pdf · doi:10.1016/j.physletb.2004.10.050

published in Physics Letters B 604(1-2), 22-30 (Elsevier BV) · More detailed treatment of systematical uncertainties, minor clarifications and corrections, significant improvements in English. 18 pages, 6 figures, accepted by Phys.Lett.B

arxiv created 2004/10/27 · openalex publication_date 2004/11/06 · arxiv updated 2009/12/01 · openalex created_date 2017/08/31 · openalex updated_date 2026/08/05

Abstract

The radiative decay Λ(1520) --> Λγwas measured directly in the study of exclusive diffractive-like reaction p + N --> Λ(1520) K⁺ + N, Λ(1520) --> Λγwith the SPHINX spectrometer. The values of the branching and partial width of this radiative decay were obtained: BR[Λ(1520) --> Λγ] = (1.02+/-0.21(stat)+/-0.15(syst))x10^-2 and Γ[Λ(1520) --> Λγ] = 159+/-33(stat)+/-26(syst) keV.

Citations

• Upper limit on the decay Σ(1385)−→Σ−γ and cross section for γΣ−→Λπ−
• Search for \rmΘ(1540)^ + in the exclusive proton-induced reaction \rm p + C(N)→ Θ^ + K⁰ + C(N) at the energy of 70 GeV
• Radiative decay width of the a2(1320)− meson
• Review of particle properties
• Review of Particle Physics