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

V. M. Byakov; V. A. Ditlov; V. V. Dubinina; N. P. Egorenkova; E. A. Pozharova; V. A. Smirnitsky

doi:10.1134/S1063778818050058

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

Authors: Byakov V.M.¹^,2, Ditlov V.A.¹, Dubinina V.V.¹, Egorenkova N.P.¹, Pozharova E.A.¹, Smirnitsky V.A.¹
Affiliations:
1. A.I. Alikhanov Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”
2. D. Mendeleyev University of Chemical Technology of Russia
Issue: Vol 81, No 6 (2018)
Pages: 676-679
Section: Nuclei
URL: https://journal-vniispk.ru/1063-7788/article/view/195960
DOI: https://doi.org/10.1134/S1063778818050058
ID: 195960

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Abstract
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Abstract

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.

About the authors

V. M. 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
Russian Federation, Moscow, 117218; Moscow, 125047