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

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.

More detailed treatment of systematical uncertainties, minor clarifications and corrections, significant improvements in English. 18 pages, 6 figures, accepted by Phys.Lett.B

References in corpus (4)

• Study of Non-Strange Baryon Resonances with Meson Photoproduction
• Search for Theta(1540)^+ in exclusive proton-induced reaction p+C(N) \to Theta^+ \bar{K}^0 + C(N) at the energy of 70 GeV
• Upper limit on the decay Sigma(1385)- --> Sigma- gamma, and cross section for gamma Sigma- --> Lambda pi-
• Radiative decay width of the a2(1320)^- meson

Cited by in corpus (4)

• Pentaquark Theta^+(1540) production in gamma N --> K Anti-K N
• Radiative decay of the Lambda(1520)
• Radiative decays of the Sigma0(1385) and Lambda(1520) hyperons
• Comments on the electromagnetic decay of $\Lambda (1520)$