A measurement of the K+→π+μ+μ− decay

dc.contributor.author	Cortina Gil, E.
dc.contributor.author	Kleimenova, A.
dc.contributor.author	Minucci, E.
dc.contributor.author	Padolski, S.
dc.contributor.author	Petrov, P.
dc.contributor.author	Shaikhiev, A.
dc.contributor.author	Volpe, R.
dc.contributor.author	Numao, T.
dc.contributor.author	Petrov, Y.
dc.contributor.author	Velghe, B.
dc.contributor.author	Wong, V. W. S.
dc.date.accessioned	2025-01-09T07:13:23Z
dc.date.available	2025-01-09T07:13:23Z
dc.date.issued	2022
dc.identifier.issn	1126-6708
dc.identifier.uri	http://rep.enu.kz/handle/enu/20759
dc.description.abstract	A sample of 2.8×104 K+→π+μ+μ− candidates with negligible background was collected by the NA62 experiment at the CERN SPS in 2017--2018. The model-independent branching fraction is measured to be (9.15±0.08)×10−8, a factor three more precise than previous measurements. The decay form factor is presented as a function of the squared dimuon mass. A measurement of the form factor parameters and their uncertainties is performed using a description based on Chiral Perturbation Theory at O(p6).	ru
dc.language.iso	en	ru
dc.publisher	Journal of High Energy Physics	ru
dc.relation.ispartofseries	Volume 2022, article number 11;
dc.title	A measurement of the K+→π+μ+μ− decay	ru
dc.type	Article	ru