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

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 deca...

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Asıl Yazarlar: The NA62 collaboration, E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, V. W. S. Wong, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, R. Fiorenza, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D’Agostini, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, E. Leonardi, A. Lonardo, M. Turisini, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E. B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M. B. Brunetti, V. Duk, V. Fascianelli, J. R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, A. Tomczak, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J. B. Dainton, R. W. L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, P. Rubin
Materyal Türü: Makale
Dil:English
Baskı/Yayın Bilgisi: SpringerOpen 2022-11-01
Seri Bilgileri:Journal of High Energy Physics
Konular:
Online Erişim:https://doi.org/10.1007/JHEP11(2022)011
_version_ 1827808182201745408
author The NA62 collaboration
E. Cortina Gil
A. Kleimenova
E. Minucci
S. Padolski
P. Petrov
A. Shaikhiev
R. Volpe
T. Numao
Y. Petrov
B. Velghe
V. W. S. Wong
D. Bryman
J. Fu
T. Husek
J. Jerhot
K. Kampf
M. Zamkovsky
R. Aliberti
G. Khoriauli
J. Kunze
D. Lomidze
L. Peruzzo
M. Vormstein
R. Wanke
P. Dalpiaz
M. Fiorini
I. Neri
A. Norton
F. Petrucci
H. Wahl
A. Cotta Ramusino
A. Gianoli
E. Iacopini
G. Latino
M. Lenti
A. Parenti
A. Bizzeti
F. Bucci
A. Antonelli
G. Georgiev
V. Kozhuharov
G. Lanfranchi
S. Martellotti
M. Moulson
T. Spadaro
G. Tinti
F. Ambrosino
T. Capussela
M. Corvino
D. Di Filippo
R. Fiorenza
P. Massarotti
M. Mirra
M. Napolitano
G. Saracino
G. Anzivino
F. Brizioli
E. Imbergamo
R. Lollini
R. Piandani
C. Santoni
M. Barbanera
P. Cenci
B. Checcucci
P. Lubrano
M. Lupi
M. Pepe
M. Piccini
F. Costantini
L. Di Lella
N. Doble
M. Giorgi
S. Giudici
G. Lamanna
E. Lari
E. Pedreschi
M. Sozzi
C. Cerri
R. Fantechi
L. Pontisso
F. Spinella
I. Mannelli
G. D’Agostini
M. Raggi
A. Biagioni
P. Cretaro
O. Frezza
E. Leonardi
A. Lonardo
M. Turisini
P. Valente
P. Vicini
R. Ammendola
V. Bonaiuto
A. Fucci
A. Salamon
F. Sargeni
R. Arcidiacono
B. Bloch-Devaux
M. Boretto
E. Menichetti
E. Migliore
D. Soldi
C. Biino
A. Filippi
F. Marchetto
J. Engelfried
N. Estrada-Tristan
A. M. Bragadireanu
S. A. Ghinescu
O. E. Hutanu
A. Baeva
D. Baigarashev
D. Emelyanov
T. Enik
V. Falaleev
V. Kekelidze
A. Korotkova
L. Litov
D. Madigozhin
M. Misheva
N. Molokanova
S. Movchan
I. Polenkevich
Yu. Potrebenikov
S. Shkarovskiy
A. Zinchenko
S. Fedotov
E. Gushchin
A. Khotyantsev
Y. Kudenko
V. Kurochka
M. Medvedeva
A. Mefodev
S. Kholodenko
V. Kurshetsov
V. Obraztsov
A. Ostankov
V. Semenov
V. Sugonyaev
O. Yushchenko
L. Bician
T. Blazek
V. Cerny
Z. Kucerova
J. Bernhard
A. Ceccucci
H. Danielsson
N. De Simone
F. Duval
B. Döbrich
L. Federici
E. Gamberini
L. Gatignon
R. Guida
F. Hahn
E. B. Holzer
B. Jenninger
M. Koval
P. Laycock
G. Lehmann Miotto
P. Lichard
A. Mapelli
R. Marchevski
K. Massri
M. Noy
V. Palladino
M. Perrin-Terrin
J. Pinzino
V. Ryjov
S. Schuchmann
S. Venditti
T. Bache
M. B. Brunetti
V. Duk
V. Fascianelli
J. R. Fry
F. Gonnella
E. Goudzovski
J. Henshaw
L. Iacobuzio
C. Lazzeroni
N. Lurkin
F. Newson
C. Parkinson
A. Romano
A. Sergi
A. Sturgess
J. Swallow
A. Tomczak
H. Heath
R. Page
S. Trilov
B. Angelucci
D. Britton
C. Graham
D. Protopopescu
J. Carmignani
J. B. Dainton
R. W. L. Jones
G. Ruggiero
L. Fulton
D. Hutchcroft
E. Maurice
B. Wrona
A. Conovaloff
P. Cooper
D. Coward
P. Rubin
author_facet The NA62 collaboration
E. Cortina Gil
A. Kleimenova
E. Minucci
S. Padolski
P. Petrov
A. Shaikhiev
R. Volpe
T. Numao
Y. Petrov
B. Velghe
V. W. S. Wong
D. Bryman
J. Fu
T. Husek
J. Jerhot
K. Kampf
M. Zamkovsky
R. Aliberti
G. Khoriauli
J. Kunze
D. Lomidze
L. Peruzzo
M. Vormstein
R. Wanke
P. Dalpiaz
M. Fiorini
I. Neri
A. Norton
F. Petrucci
H. Wahl
A. Cotta Ramusino
A. Gianoli
E. Iacopini
G. Latino
M. Lenti
A. Parenti
A. Bizzeti
F. Bucci
A. Antonelli
G. Georgiev
V. Kozhuharov
G. Lanfranchi
S. Martellotti
M. Moulson
T. Spadaro
G. Tinti
F. Ambrosino
T. Capussela
M. Corvino
D. Di Filippo
R. Fiorenza
P. Massarotti
M. Mirra
M. Napolitano
G. Saracino
G. Anzivino
F. Brizioli
E. Imbergamo
R. Lollini
R. Piandani
C. Santoni
M. Barbanera
P. Cenci
B. Checcucci
P. Lubrano
M. Lupi
M. Pepe
M. Piccini
F. Costantini
L. Di Lella
N. Doble
M. Giorgi
S. Giudici
G. Lamanna
E. Lari
E. Pedreschi
M. Sozzi
C. Cerri
R. Fantechi
L. Pontisso
F. Spinella
I. Mannelli
G. D’Agostini
M. Raggi
A. Biagioni
P. Cretaro
O. Frezza
E. Leonardi
A. Lonardo
M. Turisini
P. Valente
P. Vicini
R. Ammendola
V. Bonaiuto
A. Fucci
A. Salamon
F. Sargeni
R. Arcidiacono
B. Bloch-Devaux
M. Boretto
E. Menichetti
E. Migliore
D. Soldi
C. Biino
A. Filippi
F. Marchetto
J. Engelfried
N. Estrada-Tristan
A. M. Bragadireanu
S. A. Ghinescu
O. E. Hutanu
A. Baeva
D. Baigarashev
D. Emelyanov
T. Enik
V. Falaleev
V. Kekelidze
A. Korotkova
L. Litov
D. Madigozhin
M. Misheva
N. Molokanova
S. Movchan
I. Polenkevich
Yu. Potrebenikov
S. Shkarovskiy
A. Zinchenko
S. Fedotov
E. Gushchin
A. Khotyantsev
Y. Kudenko
V. Kurochka
M. Medvedeva
A. Mefodev
S. Kholodenko
V. Kurshetsov
V. Obraztsov
A. Ostankov
V. Semenov
V. Sugonyaev
O. Yushchenko
L. Bician
T. Blazek
V. Cerny
Z. Kucerova
J. Bernhard
A. Ceccucci
H. Danielsson
N. De Simone
F. Duval
B. Döbrich
L. Federici
E. Gamberini
L. Gatignon
R. Guida
F. Hahn
E. B. Holzer
B. Jenninger
M. Koval
P. Laycock
G. Lehmann Miotto
P. Lichard
A. Mapelli
R. Marchevski
K. Massri
M. Noy
V. Palladino
M. Perrin-Terrin
J. Pinzino
V. Ryjov
S. Schuchmann
S. Venditti
T. Bache
M. B. Brunetti
V. Duk
V. Fascianelli
J. R. Fry
F. Gonnella
E. Goudzovski
J. Henshaw
L. Iacobuzio
C. Lazzeroni
N. Lurkin
F. Newson
C. Parkinson
A. Romano
A. Sergi
A. Sturgess
J. Swallow
A. Tomczak
H. Heath
R. Page
S. Trilov
B. Angelucci
D. Britton
C. Graham
D. Protopopescu
J. Carmignani
J. B. Dainton
R. W. L. Jones
G. Ruggiero
L. Fulton
D. Hutchcroft
E. Maurice
B. Wrona
A. Conovaloff
P. Cooper
D. Coward
P. Rubin
author_sort The NA62 collaboration
collection DOAJ
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 $$ \mathcal{O} $$ (p 6).
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spelling doaj.art-7d16b545d07b4d18a2a9e04cbb8fa68f2023-09-24T11:08:25ZengSpringerOpenJournal of High Energy Physics1029-84792022-11-0120221111910.1007/JHEP11(2022)011A measurement of the K + → π + μ + μ − decayThe NA62 collaborationE. Cortina Gil0A. Kleimenova1E. Minucci2S. Padolski3P. Petrov4A. Shaikhiev5R. Volpe6T. Numao7Y. Petrov8B. Velghe9V. W. S. Wong10D. Bryman11J. Fu12T. Husek13J. Jerhot14K. Kampf15M. Zamkovsky16R. Aliberti17G. Khoriauli18J. Kunze19D. Lomidze20L. Peruzzo21M. Vormstein22R. Wanke23P. Dalpiaz24M. Fiorini25I. Neri26A. Norton27F. Petrucci28H. Wahl29A. Cotta Ramusino30A. Gianoli31E. Iacopini32G. Latino33M. Lenti34A. Parenti35A. Bizzeti36F. Bucci37A. Antonelli38G. Georgiev39V. Kozhuharov40G. Lanfranchi41S. Martellotti42M. Moulson43T. Spadaro44G. Tinti45F. Ambrosino46T. Capussela47M. Corvino48D. Di Filippo49R. Fiorenza50P. Massarotti51M. Mirra52M. Napolitano53G. Saracino54G. Anzivino55F. Brizioli56E. Imbergamo57R. Lollini58R. Piandani59C. Santoni60M. Barbanera61P. Cenci62B. Checcucci63P. Lubrano64M. Lupi65M. Pepe66M. Piccini67F. Costantini68L. Di Lella69N. Doble70M. Giorgi71S. Giudici72G. Lamanna73E. Lari74E. Pedreschi75M. Sozzi76C. Cerri77R. Fantechi78L. Pontisso79F. Spinella80I. Mannelli81G. D’Agostini82M. Raggi83A. Biagioni84P. Cretaro85O. Frezza86E. Leonardi87A. Lonardo88M. Turisini89P. Valente90P. Vicini91R. Ammendola92V. Bonaiuto93A. Fucci94A. Salamon95F. Sargeni96R. Arcidiacono97B. Bloch-Devaux98M. Boretto99E. Menichetti100E. Migliore101D. Soldi102C. Biino103A. Filippi104F. Marchetto105J. Engelfried106N. Estrada-Tristan107A. M. Bragadireanu108S. A. Ghinescu109O. E. Hutanu110A. Baeva111D. Baigarashev112D. Emelyanov113T. Enik114V. Falaleev115V. Kekelidze116A. Korotkova117L. Litov118D. Madigozhin119M. Misheva120N. Molokanova121S. Movchan122I. Polenkevich123Yu. Potrebenikov124S. Shkarovskiy125A. Zinchenko126S. Fedotov127E. Gushchin128A. Khotyantsev129Y. Kudenko130V. Kurochka131M. Medvedeva132A. Mefodev133S. Kholodenko134V. Kurshetsov135V. Obraztsov136A. Ostankov137V. Semenov138V. Sugonyaev139O. Yushchenko140L. Bician141T. Blazek142V. Cerny143Z. Kucerova144J. Bernhard145A. Ceccucci146H. Danielsson147N. De Simone148F. Duval149B. Döbrich150L. Federici151E. Gamberini152L. Gatignon153R. Guida154F. Hahn155E. B. Holzer156B. Jenninger157M. Koval158P. Laycock159G. Lehmann Miotto160P. Lichard161A. Mapelli162R. Marchevski163K. Massri164M. Noy165V. Palladino166M. Perrin-Terrin167J. Pinzino168V. Ryjov169S. Schuchmann170S. Venditti171T. Bache172M. B. Brunetti173V. Duk174V. Fascianelli175J. R. Fry176F. Gonnella177E. Goudzovski178J. Henshaw179L. Iacobuzio180C. Lazzeroni181N. Lurkin182F. Newson183C. Parkinson184A. Romano185A. Sergi186A. Sturgess187J. Swallow188A. Tomczak189H. Heath190R. Page191S. Trilov192B. Angelucci193D. Britton194C. Graham195D. Protopopescu196J. Carmignani197J. B. Dainton198R. W. L. Jones199G. Ruggiero200L. Fulton201D. Hutchcroft202E. Maurice203B. Wrona204A. Conovaloff205P. Cooper206D. Coward207P. Rubin208Université Catholique de LouvainUniversité Catholique de LouvainUniversité Catholique de LouvainUniversité Catholique de LouvainUniversité Catholique de LouvainUniversité Catholique de LouvainUniversité Catholique de LouvainTRIUMFTRIUMFTRIUMFTRIUMFTRIUMFUniversity of British ColumbiaCharles UniversityUniversité Catholique de LouvainCharles UniversityCharles UniversityInstitut für Physik and PRISMA Cluster of Excellence, Universität MainzInstitut für Physik and PRISMA Cluster of Excellence, Universität MainzInstitut für Physik and PRISMA Cluster of Excellence, Universität MainzEuropean XFEL GmbHInstitut für Physik and PRISMA Cluster of Excellence, Universität MainzInstitut für Physik and PRISMA Cluster of Excellence, Universität MainzInstitut für Physik and PRISMA Cluster of Excellence, Universität MainzDipartimento di Fisica e Scienze della Terra dell’Università e INFN, Sezione di FerraraDipartimento di Fisica e Scienze della Terra dell’Università e INFN, Sezione di FerraraDipartimento di Fisica e Scienze della Terra dell’Università e INFN, Sezione di FerraraDipartimento di Fisica e Scienze della Terra dell’Università e INFN, Sezione di FerraraDipartimento di Fisica e Scienze della Terra dell’Università e INFN, Sezione di FerraraInstitut für Physik and PRISMA Cluster of Excellence, Universität MainzINFN, Sezione di FerraraINFN, Sezione di FerraraDipartimento di Fisica e Astronomia dell’Università e INFN, Sezione di FirenzeDipartimento di Fisica e Astronomia dell’Università e INFN, Sezione di FirenzeDipartimento di Fisica e Astronomia dell’Università e INFN, Sezione di FirenzeDipartimento di Fisica e Astronomia dell’Università e INFN, Sezione di FirenzeINFN, Sezione di FirenzeINFN, Sezione di FirenzeLaboratori Nazionali di FrascatiLaboratori Nazionali di FrascatiLaboratori Nazionali di FrascatiLaboratori Nazionali di FrascatiLaboratori Nazionali di FrascatiLaboratori Nazionali di FrascatiLaboratori Nazionali di FrascatiLaboratori Nazionali di FrascatiDipartimento di Fisica “Ettore Pancini” e INFN, Sezione di NapoliDipartimento di Fisica “Ettore Pancini” e INFN, Sezione di NapoliDipartimento di Fisica “Ettore Pancini” e INFN, Sezione di NapoliDipartimento di Fisica “Ettore Pancini” e INFN, Sezione di NapoliDipartimento di Fisica “Ettore Pancini” e INFN, Sezione di NapoliDipartimento di Fisica “Ettore Pancini” e INFN, Sezione di NapoliDipartimento di Fisica “Ettore Pancini” e INFN, Sezione di NapoliDipartimento di Fisica “Ettore Pancini” e INFN, Sezione di NapoliDipartimento di Fisica “Ettore Pancini” e INFN, Sezione di NapoliDipartimento di Fisica e Geologia dell’Università e INFN, Sezione di PerugiaDipartimento di Fisica e Geologia dell’Università e INFN, Sezione di PerugiaDipartimento di Fisica e Geologia dell’Università e INFN, Sezione di PerugiaDipartimento di Fisica e Geologia dell’Università e INFN, Sezione di PerugiaDipartimento di Fisica e Geologia dell’Università e INFN, Sezione di PerugiaDipartimento di Fisica e Geologia dell’Università e INFN, Sezione di PerugiaINFN, Sezione di PerugiaINFN, Sezione di PerugiaINFN, Sezione di PerugiaINFN, Sezione di PerugiaINFN, Sezione di PerugiaINFN, Sezione di PerugiaINFN, Sezione di PerugiaDipartimento di Fisica dell’Università e INFN, Sezione di PisaDipartimento di Fisica dell’Università e INFN, Sezione di PisaInstitut für Physik and PRISMA Cluster of Excellence, Universität MainzDipartimento di Fisica dell’Università e INFN, Sezione di PisaDipartimento di Fisica dell’Università e INFN, Sezione di PisaDipartimento di Fisica dell’Università e INFN, Sezione di PisaDipartimento di Fisica dell’Università e INFN, Sezione di PisaDipartimento di Fisica dell’Università e INFN, Sezione di PisaDipartimento di Fisica dell’Università e INFN, Sezione di PisaINFN, Sezione di PisaINFN, Sezione di PisaINFN, Sezione di PisaINFN, Sezione di PisaScuola Normale Superiore e INFN, Sezione di PisaDipartimento di Fisica, Sapienza Università di Roma e INFN, Sezione di Roma IDipartimento di Fisica, Sapienza Università di Roma e INFN, Sezione di Roma IINFN, Sezione di Roma IINFN, Sezione di Roma IINFN, Sezione di Roma IINFN, Sezione di Roma IINFN, Sezione di Roma IINFN, Sezione di Roma IINFN, Sezione di Roma IINFN, Sezione di Roma IINFN, Sezione di Roma Tor VergataINFN, Sezione di Roma Tor VergataINFN, Sezione di Roma Tor VergataINFN, Sezione di Roma Tor VergataINFN, Sezione di Roma Tor VergataDipartimento di Fisica dell’Università e INFN, Sezione di TorinoDipartimento di Fisica dell’Università e INFN, Sezione di TorinoDipartimento di Fisica dell’Università e INFN, Sezione di TorinoDipartimento di Fisica dell’Università e INFN, Sezione di TorinoDipartimento di Fisica dell’Università e INFN, Sezione di TorinoDipartimento di Fisica dell’Università e INFN, Sezione di TorinoINFN, Sezione di TorinoINFN, Sezione di TorinoINFN, Sezione di TorinoInstituto de Física, Universidad Autónoma de San Luis PotosíInstituto de Física, Universidad Autónoma de San Luis PotosíHoria Hulubei National Institute for R&D in Physics and Nuclear EngineeringHoria Hulubei National Institute for R&D in Physics and Nuclear EngineeringHoria Hulubei National Institute for R&D in Physics and Nuclear EngineeringJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchInstitute for Nuclear Research of the Russian Academy of SciencesInstitute for Nuclear Research of the Russian Academy of SciencesInstitute for Nuclear Research of the Russian Academy of SciencesInstitute for Nuclear Research of the Russian Academy of SciencesInstitute for Nuclear Research of the Russian Academy of SciencesInstitute for Nuclear Research of the Russian Academy of SciencesInstitute for Nuclear Research of the Russian Academy of SciencesInstitute for High Energy Physics of the Russian Federation, State Research Center “Kurchatov Institute”Institute for High Energy Physics of the Russian Federation, State Research Center “Kurchatov Institute”Institute for High Energy Physics of the Russian Federation, State Research Center “Kurchatov Institute”Institute for High Energy Physics of the Russian Federation, State Research Center “Kurchatov Institute”Institute for High Energy Physics of the Russian Federation, State Research Center “Kurchatov Institute”Institute for High Energy Physics of the Russian Federation, State Research Center “Kurchatov Institute”Institute for High Energy Physics of the Russian Federation, State Research Center “Kurchatov Institute”Charles UniversityFaculty of Mathematics, Physics and Informatics, Comenius UniversityFaculty of Mathematics, Physics and Informatics, Comenius UniversityFaculty of Mathematics, Physics and Informatics, Comenius UniversityCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCharles UniversityCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchUniversité Catholique de LouvainINFN, Sezione di PisaCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchCERN, European Organization for Nuclear ResearchSchool of Physics and Astronomy, University of BirminghamSchool of Physics and Astronomy, University of BirminghamINFN, Sezione di PerugiaSchool of Physics and Astronomy, University of BirminghamSchool of Physics and Astronomy, University of BirminghamSchool of Physics and Astronomy, University of BirminghamSchool of Physics and Astronomy, University of BirminghamSchool of Physics and Astronomy, University of BirminghamSchool of Physics and Astronomy, University of BirminghamSchool of Physics and Astronomy, University of BirminghamUniversité Catholique de LouvainSchool of Physics and Astronomy, University of BirminghamSchool of Physics and Astronomy, University of BirminghamSchool of Physics and Astronomy, University of BirminghamSchool of Physics and Astronomy, University of BirminghamSchool of Physics and Astronomy, University of BirminghamCERN, European Organization for Nuclear ResearchSchool of Physics and Astronomy, University of BirminghamSchool of Physics, University of BristolSchool of Physics, University of BristolSchool of Physics, University of BristolSchool of Physics and Astronomy, University of GlasgowSchool of Physics and Astronomy, University of GlasgowSchool of Physics and Astronomy, University of GlasgowSchool of Physics and Astronomy, University of GlasgowFaculty of Science and Technology, University of LancasterFaculty of Science and Technology, University of LancasterFaculty of Science and Technology, University of LancasterDipartimento di Fisica e Astronomia dell’Università e INFN, Sezione di FirenzeSchool of Physical Sciences, University of LiverpoolSchool of Physical Sciences, University of LiverpoolSchool of Physical Sciences, University of LiverpoolSchool of Physical Sciences, University of LiverpoolPhysics and Astronomy Department, George Mason UniversityPhysics and Astronomy Department, George Mason UniversityPhysics and Astronomy Department, George Mason UniversityPhysics and Astronomy Department, George Mason UniversityAbstract 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 $$ \mathcal{O} $$ (p 6).https://doi.org/10.1007/JHEP11(2022)011Branching fractionFixed Target ExperimentsFlavour Changing Neutral CurrentsRare Decay
spellingShingle The NA62 collaboration
E. Cortina Gil
A. Kleimenova
E. Minucci
S. Padolski
P. Petrov
A. Shaikhiev
R. Volpe
T. Numao
Y. Petrov
B. Velghe
V. W. S. Wong
D. Bryman
J. Fu
T. Husek
J. Jerhot
K. Kampf
M. Zamkovsky
R. Aliberti
G. Khoriauli
J. Kunze
D. Lomidze
L. Peruzzo
M. Vormstein
R. Wanke
P. Dalpiaz
M. Fiorini
I. Neri
A. Norton
F. Petrucci
H. Wahl
A. Cotta Ramusino
A. Gianoli
E. Iacopini
G. Latino
M. Lenti
A. Parenti
A. Bizzeti
F. Bucci
A. Antonelli
G. Georgiev
V. Kozhuharov
G. Lanfranchi
S. Martellotti
M. Moulson
T. Spadaro
G. Tinti
F. Ambrosino
T. Capussela
M. Corvino
D. Di Filippo
R. Fiorenza
P. Massarotti
M. Mirra
M. Napolitano
G. Saracino
G. Anzivino
F. Brizioli
E. Imbergamo
R. Lollini
R. Piandani
C. Santoni
M. Barbanera
P. Cenci
B. Checcucci
P. Lubrano
M. Lupi
M. Pepe
M. Piccini
F. Costantini
L. Di Lella
N. Doble
M. Giorgi
S. Giudici
G. Lamanna
E. Lari
E. Pedreschi
M. Sozzi
C. Cerri
R. Fantechi
L. Pontisso
F. Spinella
I. Mannelli
G. D’Agostini
M. Raggi
A. Biagioni
P. Cretaro
O. Frezza
E. Leonardi
A. Lonardo
M. Turisini
P. Valente
P. Vicini
R. Ammendola
V. Bonaiuto
A. Fucci
A. Salamon
F. Sargeni
R. Arcidiacono
B. Bloch-Devaux
M. Boretto
E. Menichetti
E. Migliore
D. Soldi
C. Biino
A. Filippi
F. Marchetto
J. Engelfried
N. Estrada-Tristan
A. M. Bragadireanu
S. A. Ghinescu
O. E. Hutanu
A. Baeva
D. Baigarashev
D. Emelyanov
T. Enik
V. Falaleev
V. Kekelidze
A. Korotkova
L. Litov
D. Madigozhin
M. Misheva
N. Molokanova
S. Movchan
I. Polenkevich
Yu. Potrebenikov
S. Shkarovskiy
A. Zinchenko
S. Fedotov
E. Gushchin
A. Khotyantsev
Y. Kudenko
V. Kurochka
M. Medvedeva
A. Mefodev
S. Kholodenko
V. Kurshetsov
V. Obraztsov
A. Ostankov
V. Semenov
V. Sugonyaev
O. Yushchenko
L. Bician
T. Blazek
V. Cerny
Z. Kucerova
J. Bernhard
A. Ceccucci
H. Danielsson
N. De Simone
F. Duval
B. Döbrich
L. Federici
E. Gamberini
L. Gatignon
R. Guida
F. Hahn
E. B. Holzer
B. Jenninger
M. Koval
P. Laycock
G. Lehmann Miotto
P. Lichard
A. Mapelli
R. Marchevski
K. Massri
M. Noy
V. Palladino
M. Perrin-Terrin
J. Pinzino
V. Ryjov
S. Schuchmann
S. Venditti
T. Bache
M. B. Brunetti
V. Duk
V. Fascianelli
J. R. Fry
F. Gonnella
E. Goudzovski
J. Henshaw
L. Iacobuzio
C. Lazzeroni
N. Lurkin
F. Newson
C. Parkinson
A. Romano
A. Sergi
A. Sturgess
J. Swallow
A. Tomczak
H. Heath
R. Page
S. Trilov
B. Angelucci
D. Britton
C. Graham
D. Protopopescu
J. Carmignani
J. B. Dainton
R. W. L. Jones
G. Ruggiero
L. Fulton
D. Hutchcroft
E. Maurice
B. Wrona
A. Conovaloff
P. Cooper
D. Coward
P. Rubin
A measurement of the K + → π + μ + μ − decay
Journal of High Energy Physics
Branching fraction
Fixed Target Experiments
Flavour Changing Neutral Currents
Rare Decay
title A measurement of the K + → π + μ + μ − decay
title_full A measurement of the K + → π + μ + μ − decay
title_fullStr A measurement of the K + → π + μ + μ − decay
title_full_unstemmed A measurement of the K + → π + μ + μ − decay
title_short A measurement of the K + → π + μ + μ − decay
title_sort measurement of the k π μ μ decay
topic Branching fraction
Fixed Target Experiments
Flavour Changing Neutral Currents
Rare Decay
url https://doi.org/10.1007/JHEP11(2022)011
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AT hdanielsson measurementofthekpmmdecay
AT ndesimone measurementofthekpmmdecay
AT fduval measurementofthekpmmdecay
AT bdobrich measurementofthekpmmdecay
AT lfederici measurementofthekpmmdecay
AT egamberini measurementofthekpmmdecay
AT lgatignon measurementofthekpmmdecay
AT rguida measurementofthekpmmdecay
AT fhahn measurementofthekpmmdecay
AT ebholzer measurementofthekpmmdecay
AT bjenninger measurementofthekpmmdecay
AT mkoval measurementofthekpmmdecay
AT playcock measurementofthekpmmdecay
AT glehmannmiotto measurementofthekpmmdecay
AT plichard measurementofthekpmmdecay
AT amapelli measurementofthekpmmdecay
AT rmarchevski measurementofthekpmmdecay
AT kmassri measurementofthekpmmdecay
AT mnoy measurementofthekpmmdecay
AT vpalladino measurementofthekpmmdecay
AT mperrinterrin measurementofthekpmmdecay
AT jpinzino measurementofthekpmmdecay
AT vryjov measurementofthekpmmdecay
AT sschuchmann measurementofthekpmmdecay
AT svenditti measurementofthekpmmdecay
AT tbache measurementofthekpmmdecay
AT mbbrunetti measurementofthekpmmdecay
AT vduk measurementofthekpmmdecay
AT vfascianelli measurementofthekpmmdecay
AT jrfry measurementofthekpmmdecay
AT fgonnella measurementofthekpmmdecay
AT egoudzovski measurementofthekpmmdecay
AT jhenshaw measurementofthekpmmdecay
AT liacobuzio measurementofthekpmmdecay
AT clazzeroni measurementofthekpmmdecay
AT nlurkin measurementofthekpmmdecay
AT fnewson measurementofthekpmmdecay
AT cparkinson measurementofthekpmmdecay
AT aromano measurementofthekpmmdecay
AT asergi measurementofthekpmmdecay
AT asturgess measurementofthekpmmdecay
AT jswallow measurementofthekpmmdecay
AT atomczak measurementofthekpmmdecay
AT hheath measurementofthekpmmdecay
AT rpage measurementofthekpmmdecay
AT strilov measurementofthekpmmdecay
AT bangelucci measurementofthekpmmdecay
AT dbritton measurementofthekpmmdecay
AT cgraham measurementofthekpmmdecay
AT dprotopopescu measurementofthekpmmdecay
AT jcarmignani measurementofthekpmmdecay
AT jbdainton measurementofthekpmmdecay
AT rwljones measurementofthekpmmdecay
AT gruggiero measurementofthekpmmdecay
AT lfulton measurementofthekpmmdecay
AT dhutchcroft measurementofthekpmmdecay
AT emaurice measurementofthekpmmdecay
AT bwrona measurementofthekpmmdecay
AT aconovaloff measurementofthekpmmdecay
AT pcooper measurementofthekpmmdecay
AT dcoward measurementofthekpmmdecay
AT prubin measurementofthekpmmdecay