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

The NA62 Collaboration

doi:10.1007/JHEP11(2022)011

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

The NA62 Collaboration

University of Louvain
Comenius University
LNF-INFN
European Organization for Nuclear Research
Brookhaven National Laboratory
University of Birmingham
INFN Sezione di Perugia
TRIUMF
University of British Columbia
Charles University
Lund University
Johannes Gutenberg University
University of Würzburg
European XFEL GmbH
Sezione INFN di Ferrara
University of Glasgow
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
University of Modena and Reggio Emilia
Sofia University St. Kliment Ohridski
INFN Sezione di Napoli
University of Liverpool
Scuola Superiore Meridionale
Universidad Autónoma de San Luis Potosi
Goethe University Frankfurt am Main
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Sezione di Roma
Scuola Normale Superiore di Pisa
University of Rome
INFN Roma Tor Vergata
University of Rome “Tor Vergata”
INFN Sezione di Torino
Laboratory of Molecular Pathology
Universidad de Guanajuato
Horia Hulubei National Institute of Physics and Nuclear Engineering
Joint Institute for Nuclear Research, Dubna
L.N. Gumilyov Eurasian National University
Institute for Nuclear Research of the Russian Academy of Sciences
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
National Research Nuclear University MEPhI
Kurchatov Institute
c/o DESY
Faculty of Science and Technology, Lancaster University
Weizmann Institute of Science Israel
Aix-Marseille Université
University of Warwick
Columbia University
Sezione di Genova
University of Bristol
George Mason University
Stanford University

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

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).

langue originale	Anglais
Numéro d'article	11
journal	Journal of High Energy Physics
Volume	2022
Numéro de publication	11
Les DOIs	https://doi.org/10.1007/JHEP11(2022)011
état	Publié - 1 nov. 2022

Accès au document

10.1007/JHEP11(2022)011

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Contient cette citation

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title = "A measurement of the K + → π + μ + μ− decay",

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).",

keywords = "Branching fraction, Fixed Target Experiments, Flavour Changing Neutral Currents, Rare Decay",

author = "\{The NA62 Collaboration\} and \{Cortina Gil\}, E. and A. Kleimenova and E. Minucci and S. Padolski and P. Petrov and A. Shaikhiev and R. Volpe and T. Numao and Y. Petrov and B. Velghe and Wong, \{V. W.S.\} and D. Bryman and J. Fu and T. Husek and J. Jerhot and K. Kampf and M. Zamkovsky and R. Aliberti and G. Khoriauli and J. Kunze and D. Lomidze and L. Peruzzo and M. Vormstein and R. Wanke and P. Dalpiaz and M. Fiorini and I. Neri and A. Norton and F. Petrucci and H. Wahl and \{Cotta Ramusino\}, A. and A. Gianoli and E. Iacopini and G. Latino and M. Lenti and A. Parenti and A. Bizzeti and F. Bucci and A. Antonelli and G. Georgiev and V. Kozhuharov and G. Lanfranchi and S. Martellotti and M. Moulson and T. Spadaro and G. Tinti and F. Ambrosino and T. Capussela and M. Corvino and E. Maurice",

note = "Publisher Copyright: {\textcopyright} 2022, The Author(s).",

year = "2022",

month = nov,

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doi = "10.1007/JHEP11(2022)011",

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AU - The NA62 Collaboration

AU - Cortina Gil, E.

AU - Kleimenova, A.

AU - Minucci, E.

AU - Padolski, S.

AU - Petrov, P.

AU - Shaikhiev, A.

AU - Volpe, R.

AU - Numao, T.

AU - Petrov, Y.

AU - Velghe, B.

AU - Wong, V. W.S.

AU - Bryman, D.

AU - Fu, J.

AU - Husek, T.

AU - Jerhot, J.

AU - Kampf, K.

AU - Zamkovsky, M.

AU - Aliberti, R.

AU - Khoriauli, G.

AU - Kunze, J.

AU - Lomidze, D.

AU - Peruzzo, L.

AU - Vormstein, M.

AU - Wanke, R.

AU - Dalpiaz, P.

AU - Fiorini, M.

AU - Neri, I.

AU - Norton, A.

AU - Petrucci, F.

AU - Wahl, H.

AU - Cotta Ramusino, A.

AU - Gianoli, A.

AU - Iacopini, E.

AU - Latino, G.

AU - Lenti, M.

AU - Parenti, A.

AU - Bizzeti, A.

AU - Bucci, F.

AU - Antonelli, A.

AU - Georgiev, G.

AU - Kozhuharov, V.

AU - Lanfranchi, G.

AU - Martellotti, S.

AU - Moulson, M.

AU - Spadaro, T.

AU - Tinti, G.

AU - Ambrosino, F.

AU - Capussela, T.

AU - Corvino, M.

AU - Maurice, E.

PY - 2022/11/1

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N2 - 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).

AB - 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).

KW - Branching fraction

KW - Fixed Target Experiments

KW - Flavour Changing Neutral Currents

KW - Rare Decay

UR - https://www.scopus.com/pages/publications/85141191062

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DO - 10.1007/JHEP11(2022)011

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JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

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