A measurement of the K + → π + μ + μ− decay
(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:
https://lup.lub.lu.se/record/42239fbc-5bfb-4d4f-b0a7-073275b46ec0
- author
- Cortina Gil, E. ; Husek, T. LU and Rubin, P.
- author collaboration
- organization
- publishing date
- 2022
- 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
- 2024-04-18 10:43:09
@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}}, }