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A measurement of the K + → π + μ + μ− decay

Cortina Gil, E. ; Husek, T. LU and Rubin, P. (2022) In Journal of High Energy Physics 2022(11).
Abstract
A sample of 2.8 × 104K+ → 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). © 2022, The Author(s).
Please use this url to cite or link to this publication:
author
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publishing date
type
Contribution to journal
publication status
published
subject
keywords
Branching fraction, Fixed Target Experiments, Flavour Changing Neutral Currents, Rare Decay
in
Journal of High Energy Physics
volume
2022
issue
11
article number
11
publisher
Springer
external identifiers
  • scopus:85141191062
ISSN
1029-8479
DOI
10.1007/JHEP11(2022)011
language
English
LU publication?
yes
id
42239fbc-5bfb-4d4f-b0a7-073275b46ec0
date added to LUP
2023-01-10 16:12:12
date last changed
2025-10-14 11:30:22
@article{42239fbc-5bfb-4d4f-b0a7-073275b46ec0,
  abstract     = {{A sample of 2.8 × 104K+ → 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). © 2022, The Author(s).}},
  author       = {{Cortina Gil, E. and Husek, T. and Rubin, P.}},
  issn         = {{1029-8479}},
  keywords     = {{Branching fraction; Fixed Target Experiments; Flavour Changing Neutral Currents; Rare Decay}},
  language     = {{eng}},
  number       = {{11}},
  publisher    = {{Springer}},
  series       = {{Journal of High Energy Physics}},
  title        = {{A measurement of the K + → π + μ + μ− decay}},
  url          = {{http://dx.doi.org/10.1007/JHEP11(2022)011}},
  doi          = {{10.1007/JHEP11(2022)011}},
  volume       = {{2022}},
  year         = {{2022}},
}