Abstract

A precise measurement of the vector and axial-vector form factors difference \[F_V-F_A\] in the \[K^+\rightarrow {\mu ^+}{\nu _{\mu }}{\gamma }\] decay is presented. About 95K events of \[K^+\rightarrow {\mu ^+}{\nu _{\mu }}{\gamma }\] are selected in the OKA experiment. The result is \[F_V-F_A=0.134\pm 0.021(stat)\pm 0.027(syst)\]. Both errors are smaller than in the previous \[F_V-F_A\] measurements.

Details

Title
Measurement of the \[K^+\rightarrow {\mu ^+}{\nu _{\mu }}{\gamma }\] decay form factors in the OKA experiment
Author
Kravtsov, V I 1   VIAFID ORCID Logo  ; Akimenko, S A 2 ; Artamonov, A V 2 ; Blik, A M 2 ; Burtovoy, V S 2 ; Bychkov, V N 3 ; Donskov, S V 2 ; Duk, V A 4 ; Filin, A P 2 ; Filippov, S N 1 ; Gorin, A M 2 ; Gushchin, E N 1 ; Inyakin, A V 2 ; Kekelidze, G D 3 ; Khaustov, G V 2 ; Kholodenko, S A 2 ; Khudyakov, A A 1 ; Kolosov, V N 2 ; Kudenko, Yu G 5 ; Kurshetsov, V F 2 ; Lishin, V A 2 ; Lysan, V M 3 ; Medynsky, M V 2 ; Mikhailov, Yu V 2 ; Obraztsov, V F 2 ; Polyakov, V A 2 ; A Yu Polyarush 1 ; Popov, A V 2 ; Romanovsky, V I 2 ; Rykalin, V I 2 ; Sadovsky, A S 2 ; Samoilenko, V D 2 ; Semenov, V K 2 ; Shapkin, M M 2 ; Stenyakin, O V 2 ; Tchikilev, O G 2 ; Uvarov, V A 2 ; Yushchenko, O P 2 ; Zalikhanov, B Zh 3 

1  Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia 
2  NRC “Kurchatov Institute”-IHEP, Protvino, Russia 
3  Joint Institute of Nuclear Research, Dubna, Russia 
4  Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia; University of Birmingham, Birmingham, UK 
5  Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia; Moscow Institute of Physics and Technology, Moscow Region, Russia; NRNU Moscow Engineering Physics Institute (MEPhI), Moscow, Russia 
Pages
1-6
Publication year
2019
Publication date
Jul 2019
Publisher
Springer Nature B.V.
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1140/epjc/s10052-019-7145-1
ProQuest document ID
2266243444
Copyright
The European Physical Journal C is a copyright of Springer, (2019). All Rights Reserved., © 2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.