Publication: Study of K+→ πe+νγ decay with OKA setup
Дата
2021
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© 2021, The Author(s).Results of a study of the K+→ πe+νγ decay at OKA setup are presented. More than 32,000 events of this decay are observed. The differential spectra over the photon energy and the photon–electron opening angle in kaon rest frame are presented. The branching ratios, normalized to that of Ke3 decay are calculated for different cuts on Eγ∗ and cosΘeγ∗. In particular, the branching ratio for Eγ∗>30 MeV and Θeγ∗>20∘ is measured R = Br(K+→π0e+νeγ)Br(K+→π0e+νe) = = (0.587±0.010(stat.)±0.015(syst.))× 10 - 2, which is in a good agreement with ChPT O(p4) calculations.
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Study of K+→ πe+νγ decay with OKA setup / Polyarush, A.Y. [et al.] // European Physical Journal C. - 2021. - 81. - № 2. - 10.1140/epjc/s10052-021-08895-2
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https://www.doi.org/10.1140/epjc/s10052-021-08895-2
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https://openrepository.mephi.ru/handle/123456789/23697
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https://openrepository.mephi.ru/handle/123456789/23697