Measurement of branching fractions and search for CP violation in D0 → π+π−η, D0 → K+K−η, and D0 → ϕη at Belle

被引:0
作者
L. K. Li
A. J. Schwartz
K. Kinoshita
I. Adachi
H. Aihara
S. Al Said
D. M. Asner
H. Atmacan
V. Aulchenko
T. Aushev
R. Ayad
V. Babu
S. Bahinipati
P. Behera
J. Bennett
M. Bessner
T. Bilka
J. Biswal
A. Bobrov
G. Bonvicini
A. Bozek
M. Bračko
P. Branchini
T. E. Browder
A. Budano
M. Campajola
D. Červenkov
M.-C. Chang
P. Chang
V. Chekelian
A. Chen
Y. Q. Chen
B. G. Cheon
K. Chilikin
H. E. Cho
K. Cho
S.-J. Cho
S.-K. Choi
Y. Choi
S. Choudhury
D. Cinabro
S. Cunliffe
S. Das
N. Dash
G. De Nardo
G. De Pietro
R. Dhamija
F. Di Capua
Z. Doležal
T. V. Dong
机构
[1] University of the Basque Country UPV/EHU,Department of Physics
[2] University of Bonn,Faculty of Mathematics and Physics
[3] Brookhaven National Laboratory,Department of Physics
[4] Budker Institute of Nuclear Physics SB RAS,Key Laboratory of Nuclear Physics and Ion
[5] Charles University,beam Application (MOE) and Institute of Modern Physics
[6] Chonnam National University,Department of Physics and Institute of Natural Sciences
[7] University of Cincinnati,J
[8] Deutsches Elektronen-Synchrotron,PARC Branch, KEK Theory Center
[9] University of Florida,Institute of High Energy Physics
[10] Fu Jen Catholic University,Advanced Science Research Center
[11] Fudan University,Institut für Experimentelle Teilchenphysik
[12] Gifu University,Department of Physics, Faculty of Science
[13] SOKENDAI (The Graduate University for Advanced Studies),Faculty of Mathematics and Physics
[14] Gyeongsang National University,Faculty of Chemistry and Chemical Engineering
[15] Hanyang University,Graduate School of Science
[16] University of Hawaii,Department of Physics
[17] High Energy Accelerator Research Organization (KEK),Research Center for Nuclear Physics
[18] High Energy Accelerator Research Organization (KEK),Meson Science Laboratory, Cluster for Pioneering Research
[19] National Research University Higher School of Economics,Dipartimento di Matematica e Fisica
[20] Forschungszentrum Jülich,Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics
[21] IKERBASQUE,School of Physics
[22] Basque Foundation for Science,Department of Physics, Faculty of Science
[23] Indian Institute of Technology Bhubaneswar,Department of Physics
[24] Indian Institute of Technology Hyderabad,School of Physics and Astronomy
[25] Indian Institute of Technology Madras,Department of Physics
[26] Indiana University,Earthquake Research Institute
[27] Chinese Academy of Sciences,Department of Physics
[28] Institute for High Energy Physics,undefined
[29] Institute of High Energy Physics,undefined
[30] INFN - Sezione di Napoli,undefined
[31] INFN - Sezione di Roma Tre,undefined
[32] Japan Atomic Energy Agency,undefined
[33] J. Stefan Institute,undefined
[34] Karlsruher Institut für Technologie,undefined
[35] King Abdulaziz University,undefined
[36] Kitasato University,undefined
[37] Korea Institute of Science and Technology Information,undefined
[38] Korea University,undefined
[39] Kyoto Sangyo University,undefined
[40] Kyungpook National University,undefined
[41] Université Paris-Saclay,undefined
[42] CNRS/IN2P3,undefined
[43] IJCLab,undefined
[44] P.N. Lebedev Physical Institute of the Russian Academy of Sciences,undefined
[45] Liaoning Normal University,undefined
[46] University of Ljubljana,undefined
[47] Ludwig Maximilians University,undefined
[48] Luther College,undefined
[49] Malaviya National Institute of Technology Jaipur,undefined
[50] University of Maribor,undefined
来源
Journal of High Energy Physics | / 2021卷
关键词
Branching fraction; Charm physics; CP violation; -; Experiments;
D O I
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摘要
We measure the branching fractions and CP asymmetries for the singly Cabibbo-suppressed decays D0 → π+π−η, D0 → K+K−η, and D0 → ϕη, using 980 fb−1 of data from the Belle experiment at the KEKB e+e− collider. We obtainBD0→π+π−η=1.22±0.02stat±0.02syst±0.03Bref×10−3,BD0→K+K−η=1.80−0.06+0.07stat±0.04syst±0.05Bref×10−4,BD0→ϕη=1.84±0.09stat±0.06syst±0.05Bref×10−4,\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {\displaystyle \begin{array}{c}\mathcal{B}\left({D}^0\to {\pi}^{+}{\pi}^{-}\eta \right)=\left[1.22\pm 0.02\left(\mathrm{stat}\right)\pm 0.02\left(\mathrm{syst}\right)\pm 0.03\left({\mathcal{B}}_{\mathrm{ref}}\right)\right]\times {10}^{-3},\\ {}\mathcal{B}\left({D}^0\to {K}^{+}{K}^{-}\eta \right)=\left[{1.80}_{-0.06}^{+0.07}\left(\mathrm{stat}\right)\pm 0.04\left(\mathrm{syst}\right)\pm 0.05\left({\mathcal{B}}_{\mathrm{ref}}\right)\right]\times {10}^{-4},\\ {}\mathcal{B}\left({D}^0\to \phi \eta \right)=\left[1.84\pm 0.09\left(\mathrm{stat}\right)\pm 0.06\left(\mathrm{syst}\right)\pm 0.05\left({\mathcal{B}}_{\mathrm{ref}}\right)\right]\times {10}^{-4},\end{array}} $$\end{document}
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