A study of the K+→ π0e+νγ decay

被引：0
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作者：
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
Z. Hives
T. Husek
J. Jerhot
K. Kampf
M. Zamkovsky
B. De Martino
M. Perrin-Terrin
A. T. Akmete
R. Aliberti
G. Khoriauli
J. Kunze
D. Lomidze
L. Peruzzo
M. Vormstein
R. Wanke
P. Dalpiaz
M. Fiorini
A. Mazzolari
I. Neri
A. Norton
F. Petrucci
M. Soldani
H. Wahl
L. Bandiera
A. Cotta Ramusino
A. Gianoli
M. Romagnoni
A. Sytov
E. Iacopini
G. Latino
M. Lenti
P. Lo Chiatto
I. Panichi
A. Parenti
A. Bizzeti
F. Bucci
A. Antonelli
机构：
[1] Université Catholique de Louvain,Institut für Physik and PRISMA Cluster of Excellence
[2] TRIUMF,Instituto de Física
[3] University of British Columbia,Faculty of Mathematics, Physics and Informatics
[4] Charles University,School of Physics and Astronomy
[5] Aix Marseille University,School of Physics
[6] CNRS/IN2P3,School of Physics and Astronomy
[7] CPPM,Faculty of Science and Technology
[8] Universität Mainz,School of Physical Sciences
[9] Dipartimento di Fisica e Scienze della Terra dell’Università e INFN,Physics and Astronomy Department
[10] Sezione di Ferrara,Institut für Kernphysik and Helmholtz Institute Mainz
[11] INFN,Dipartimento di Scienze Fisiche, Informatiche e Matematiche
[12] Sezione di Ferrara,Faculty of Physics
[13] Dipartimento di Fisica e Astronomia dell’Università e INFN,Institut am Fachbereich Informatik und Mathematik
[14] Sezione di Firenze,Department of Industrial Engineering
[15] INFN,Department of Electronic Engineering
[16] Sezione di Firenze,Department of Physics
[17] Laboratori Nazionali di Frascati,Center for theoretical neuroscience
[18] Dipartimento di Fisica “Ettore Pancini” e INFN,SLAC National Accelerator Laboratory
[19] Sezione di Napoli,undefined
[20] Dipartimento di Fisica e Geologia dell’Università e INFN,undefined
[21] Sezione di Perugia,undefined
[22] INFN,undefined
[23] Sezione di Perugia,undefined
[24] Dipartimento di Fisica dell’Università e INFN,undefined
[25] Sezione di Pisa,undefined
[26] INFN,undefined
[27] Sezione di Pisa,undefined
[28] Scuola Normale Superiore e INFN,undefined
[29] Sezione di Pisa,undefined
[30] Dipartimento di Fisica,undefined
[31] Sapienza Università di Roma e INFN,undefined
[32] Sezione di Roma I,undefined
[33] INFN,undefined
[34] Sezione di Roma I,undefined
[35] INFN,undefined
[36] Sezione di Roma Tor Vergata,undefined
[37] Dipartimento di Fisica dell’Università e INFN,undefined
[38] Sezione di Torino,undefined
[39] INFN,undefined
[40] Sezione di Torino,undefined
[41] Universidad Autónoma de San Luis Potosí,undefined
[42] Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering,undefined
[43] Comenius University,undefined
[44] CERN,undefined
[45] European Organization for Nuclear Research,undefined
[46] University of Birmingham,undefined
[47] University of Bristol,undefined
[48] University of Glasgow,undefined
[49] University of Lancaster,undefined
[50] University of Liverpool,undefined
来源：
Journal of High Energy Physics | / 2023卷
关键词：
Branching fraction; Electroweak Interaction; Fixed Target Experiments; Flavour Physics;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A sample of 1.3 × 105K+ → π0e+νγ candidates with less than 1% background was collected by the NA62 experiment at the CERN SPS in 2017–2018. Branching fraction measurements are obtained at percent relative precision in three restricted kinematic regions, improving on existing results by a factor larger than two. An asymmetry, possibly related to T-violation, is investigated with no evidence observed within the achieved precision.
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