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Observation of the Doubly Cabibbo-Suppressed Decay D+ →k+π+π-π0 and Evidence for D+ →k+ω. / BESIII Collaboration.
In: Physical Review Letters, Vol. 125, No. 14, 141802, 10.2020.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Observation of the Doubly Cabibbo-Suppressed Decay D+ →k+π+π-π0 and Evidence for D+ →k+ω
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Adlarson, P.
AU - Ahmed, S.
AU - Albrecht, M.
AU - Amoroso, A.
AU - An, Q.
AU - Anita,
AU - Bai, X. H.
AU - Bai, Y.
AU - Bakina, O.
AU - Ferroli, R. Baldini
AU - Balossino, I.
AU - Ban, Y.
AU - Begzsuren, K.
AU - Bennett, J. V.
AU - Berger, N.
AU - Bertani, M.
AU - Bettoni, D.
AU - Bianchi, F.
AU - Biernat, J.
AU - Bloms, J.
AU - Bortone, A.
AU - Boyko, I.
AU - Briere, R. A.
AU - Cai, H.
AU - Cai, X.
AU - Calcaterra, A.
AU - Cao, G. F.
AU - Cao, N.
AU - Cetin, S. A.
AU - Chang, J. F.
AU - Chang, W. L.
AU - Chelkov, G.
AU - Chen, D. Y.
AU - Chen, G.
AU - Chen, H. S.
AU - Chen, M. L.
AU - Chen, S. J.
AU - Chen, X. R.
AU - Chen, Y. B.
AU - Chen, Z. J.
AU - Cheng, W. S.
AU - Cibinetto, G.
AU - Cossio, F.
AU - Cui, X. F.
AU - Dai, H. L.
AU - Dai, J. P.
AU - Muchnoi, N. Yu
AU - Nikolaev, I. B.
N1 - Publisher Copyright: © 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2020/10
Y1 - 2020/10
N2 - Using 2.93 fb-1 of e+e-collision data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector, the first observation of the doubly Cabibbo-suppressed decay D+→K+π+π-π0 is reported. After removing decays that contain narrow intermediate resonances, including D+→K+η, D+→K+ω, and D+→K+φ, the branching fraction of the decay D+→K+π+π-π0 is measured to be (1.13±0.08stat±0.03syst)×10-3. The ratio of branching fractions of D+→K+π+π-π0 over D+→K-π+π+π0 is found to be (1.81±0.15)%, which corresponds to (6.28±0.52)tan4θC, where θC is the Cabibbo mixing angle. This ratio is significantly larger than the corresponding ratios for other doubly Cabibbo-suppressed decays. The asymmetry of the branching fractions of charge-conjugated decays D±K±0 is also determined, and no evidence for CP violation is found. In addition, the first evidence for the D+→K+ω decay, with a statistical significance of 3.3σ, is presented and the branching fraction is measured to be B(D+→K+ω)=(5.7-2.1+2.5stat±0.2syst)×10-5.
AB - Using 2.93 fb-1 of e+e-collision data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector, the first observation of the doubly Cabibbo-suppressed decay D+→K+π+π-π0 is reported. After removing decays that contain narrow intermediate resonances, including D+→K+η, D+→K+ω, and D+→K+φ, the branching fraction of the decay D+→K+π+π-π0 is measured to be (1.13±0.08stat±0.03syst)×10-3. The ratio of branching fractions of D+→K+π+π-π0 over D+→K-π+π+π0 is found to be (1.81±0.15)%, which corresponds to (6.28±0.52)tan4θC, where θC is the Cabibbo mixing angle. This ratio is significantly larger than the corresponding ratios for other doubly Cabibbo-suppressed decays. The asymmetry of the branching fractions of charge-conjugated decays D±K±0 is also determined, and no evidence for CP violation is found. In addition, the first evidence for the D+→K+ω decay, with a statistical significance of 3.3σ, is presented and the branching fraction is measured to be B(D+→K+ω)=(5.7-2.1+2.5stat±0.2syst)×10-5.
UR - http://www.scopus.com/inward/record.url?scp=85093361335&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.125.141802
DO - 10.1103/PhysRevLett.125.141802
M3 - Article
C2 - 33064551
AN - SCOPUS:85093361335
VL - 125
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 14
M1 - 141802
ER -
ID: 27867870