Measurement of the radiative decay of polarized muons in the MEG experiment

The MEG Collaboration

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We studied the radiative muon decay (Formula presented.) by using for the first time an almost fully polarized muon source. We identified a large sample ((Formula presented.) 13,000) of these decays in a total sample of (Formula presented.) positive muon decays collected in the MEG experiment in the years 2009–2010 and measured the branching ratio (Formula presented.) for (Formula presented.) and (Formula presented.) , consistent with the Standard Model prediction. The precise measurement of this decay mode provides a basic tool for the timing calibration, a normalization channel, and a strong quality check of the complete MEG experiment in the search for (Formula presented.) process.

Original languageEnglish
Article number108
Pages (from-to)1-8
Number of pages8
JournalEuropean Physical Journal C
Issue number3
Publication statusPublished - 1 Mar 2016
Externally publishedYes

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