TY - JOUR
T1 - Observation of D+ → KS0 a0 (980)+ in the Amplitude Analysis of D+ → KS0 π+η
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Adlarson, P.
AU - Ai, X. C.
AU - Kabana, S.
AU - The BESIII collaboration
N1 - Publisher Copyright:
© 2024 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.
PY - 2024/3/29
Y1 - 2024/3/29
N2 - We perform for the first time an amplitude analysis of the decay D+→KS0π+η and report the observation of the decay D+→KS0a0(980)+ using 2.93 fb-1 of e+e- collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W-annihilation-free decay among D to a0(980) pseudoscalar, D+→KS0a0(980)+ is the ideal decay in extracting the contributions of the W-emission amplitudes involving a0(980) and to study the final-state interactions. The absolute branching fraction of D+→KS0π+η is measured to be (1.27±0.04stat±0.03syst)%. The branching fractions of intermediate processes D+→KS0a0(980)+ with a0(980)+→π+η and D+→π+K̄0∗(1430)0 with K̄0∗(1430)0→KS0η are measured to be (1.33±0.05stat±0.04syst)% and (0.14±0.03stat±0.01syst)%, respectively.
AB - We perform for the first time an amplitude analysis of the decay D+→KS0π+η and report the observation of the decay D+→KS0a0(980)+ using 2.93 fb-1 of e+e- collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W-annihilation-free decay among D to a0(980) pseudoscalar, D+→KS0a0(980)+ is the ideal decay in extracting the contributions of the W-emission amplitudes involving a0(980) and to study the final-state interactions. The absolute branching fraction of D+→KS0π+η is measured to be (1.27±0.04stat±0.03syst)%. The branching fractions of intermediate processes D+→KS0a0(980)+ with a0(980)+→π+η and D+→π+K̄0∗(1430)0 with K̄0∗(1430)0→KS0η are measured to be (1.33±0.05stat±0.04syst)% and (0.14±0.03stat±0.01syst)%, respectively.
UR - https://www.scopus.com/pages/publications/85189701639
U2 - 10.1103/PhysRevLett.132.131903
DO - 10.1103/PhysRevLett.132.131903
M3 - Article
C2 - 38613307
AN - SCOPUS:85189701639
SN - 0031-9007
VL - 132
JO - Physical Review Letters
JF - Physical Review Letters
IS - 13
M1 - 131903
ER -