Observation of Migdal’s Effect in the Decays of Positively Charged Pions and Muons


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The energy spectra of fast (101−102 keV) electrons accompanying π+ → μ+ decays of positively charged pions (π+) stopped in a nuclear emulsion are obtained. These spectra are compared with the analogous spectra obtained earlier for electrons accompanying the decay μ+ → е+. The comparison in question confirms qualitatively the hypothesis that, in either process, fast electrons appear via the mechanism based on Migdal’s shakeup effect.

作者简介

V. Byakov

A.I. Alikhanov Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”; D. Mendeleyev University of Chemical Technology of Russia

Email: vladimir@itep.ru
俄罗斯联邦, Moscow, 117218; Moscow, 125047

V. Ditlov

A.I. Alikhanov Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”

Email: vladimir@itep.ru
俄罗斯联邦, Moscow, 117218

V. Dubinina

A.I. Alikhanov Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”

Email: vladimir@itep.ru
俄罗斯联邦, Moscow, 117218

N. Egorenkova

A.I. Alikhanov Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”

Email: vladimir@itep.ru
俄罗斯联邦, Moscow, 117218

E. Pozharova

A.I. Alikhanov Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”

Email: vladimir@itep.ru
俄罗斯联邦, Moscow, 117218

V. Smirnitsky

A.I. Alikhanov Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”

编辑信件的主要联系方式.
Email: vladimir@itep.ru
俄罗斯联邦, Moscow, 117218

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