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Cortina Gil, E.; Kleimenova, A.; Minucci, E.; Padolski, S.; Petrov, P.; Shaikhiev, A.; Volpe, R.; Numao, T.; Petrov, Y.; Velghe, B.; Wong, V. W. S.; Bryman, D.; Fu, J.; Husek, T.; Jerhot, J.; Kampf, K.; Zamkovsky, M.; Aliberti, R.; Khoriauli, G.; Kunze, J.; Lomidze, D.; Peruzzo, L.; Vormstein, M.; Wanke, R.; [...]

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

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  • Media type: E-Article
  • Title: A measurement of the K+ → π+μ+μ− decay
  • Contributor: Cortina Gil, E.; Kleimenova, A.; Minucci, E.; Padolski, S.; Petrov, P.; Shaikhiev, A.; Volpe, R.; Numao, T.; Petrov, Y.; Velghe, B.; Wong, V. W. S.; Bryman, D.; Fu, J.; Husek, T.; Jerhot, J.; Kampf, K.; Zamkovsky, M.; Aliberti, R.; Khoriauli, G.; Kunze, J.; Lomidze, D.; Peruzzo, L.; Vormstein, M.; Wanke, R.; [...]
  • Published: Springer Science and Business Media LLC, 2022
  • Published in: Journal of High Energy Physics, 2022 (2022) 11
  • Language: English
  • DOI: 10.1007/jhep11(2022)011
  • ISSN: 1029-8479
  • Origination:
  • Footnote:
  • Description: 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 $$ \mathcal{O} $$ O (p6).
  • Access State: Open Access