Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Amplitude analysis of the decays D0 → π+π−π+π− and D0 → π+π−π0π0*. / The BESIII Collaboration ; Мучной, Николай Юрьевич.
в: Chinese Physics C, Том 48, № 8, 083001, 01.08.2024.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Amplitude analysis of the decays D0 → π+π−π+π− and D0 → π+π−π0π0*
AU - BESIII Collaboration
AU - Ablikim 麦, M. 迪娜
AU - Achasov, M. n.
AU - Adlarson, P.
AU - Afedulidis, O.
AU - Ai 艾, X. c. 小聪
AU - Aliberti, R.
AU - Amoroso, A.
AU - An 安, Q. 琪
AU - Bai 白, Y. 羽
AU - Bakina, O.
AU - Balossino, I.
AU - Ban 班, Y. 勇
AU - Bao 包, H.-R. 浩然
AU - Batozskaya, V.
AU - Begzsuren, K.
AU - Berger, N.
AU - Berlowski, M.
AU - Bertani, M.
AU - Bettoni, D.
AU - Bianchi, F.
AU - Bianco, E.
AU - Bortone, A.
AU - Briere, R. a.
AU - Brueggemann, A.
AU - Cai 蔡, H. 浩
AU - Cai 蔡, X. 啸
AU - Calcaterra, A.
AU - Cao 曹, G. f. 国富
AU - Cao 曹, N. 宁
AU - Cetin, S. a.
AU - Chang 常, J. f. 劲帆
AU - Chang, W. l.
AU - Che 车, G. r. 国荣
AU - Chelkov, G.
AU - Chen 陈, C. 琛
AU - Chen 陈, C. h. 春卉
AU - Chen 陈, Chao 超
AU - Nikolaev, I. b.
AU - Мучной, Николай Юрьевич
PY - 2024/8/1
Y1 - 2024/8/1
N2 - Using e+e− annihilation data corresponding to an integrated luminosity of 2.93 fb−1 taken at the center-of-mass energy √s = 3.773 GeV with the BESIII detector, a joint amplitude analysis is performed on the decays D0 → π+π−π+π− and D0 → π+π−π0π0 (non-η). The fit fractions of individual components are obtained, and large interferences among the dominant components of the decays D0 → a1(1260)π, D0 → π(1300)π, D0 → ρ(770)ρ(770), and D0 → 2(ππ)S are observed in both channels. With the obtained amplitude model, the CP-even fractions of D0 → π+π−π+π− and D0 → π+π−π0π0 (non-η) are determined to be (75.2 ± 1.1stat. ± 1.5syst.) % and (68.9 ± 1.5stat. ± 2.4syst.)%, respectively. The branching fractions of D0 → π+π−π+π− and D0 → π+π−π0π0 (non-η) are measured to be (0.688 ± 0.010stat. ± 0.010syst.)% and (0.951 ± 0.025stat. ± 0.021syst.)%, respectively. The amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D0 → 4π when used to determine the CKM angle γ(ϕ3) via the B− → DK− decay.
AB - Using e+e− annihilation data corresponding to an integrated luminosity of 2.93 fb−1 taken at the center-of-mass energy √s = 3.773 GeV with the BESIII detector, a joint amplitude analysis is performed on the decays D0 → π+π−π+π− and D0 → π+π−π0π0 (non-η). The fit fractions of individual components are obtained, and large interferences among the dominant components of the decays D0 → a1(1260)π, D0 → π(1300)π, D0 → ρ(770)ρ(770), and D0 → 2(ππ)S are observed in both channels. With the obtained amplitude model, the CP-even fractions of D0 → π+π−π+π− and D0 → π+π−π0π0 (non-η) are determined to be (75.2 ± 1.1stat. ± 1.5syst.) % and (68.9 ± 1.5stat. ± 2.4syst.)%, respectively. The branching fractions of D0 → π+π−π+π− and D0 → π+π−π0π0 (non-η) are measured to be (0.688 ± 0.010stat. ± 0.010syst.)% and (0.951 ± 0.025stat. ± 0.021syst.)%, respectively. The amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D0 → 4π when used to determine the CKM angle γ(ϕ3) via the B− → DK− decay.
KW - BESIII
KW - CP-even fraction
KW - D0 meson decays
KW - amplitude analysis
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85199341124&origin=inward&txGid=4c56adb4490a591aeb91cac1383e0dc3
U2 - 10.1088/1674-1137/ad3d4d
DO - 10.1088/1674-1137/ad3d4d
M3 - Article
VL - 48
JO - Chinese Physics C
JF - Chinese Physics C
SN - 1674-1137
IS - 8
M1 - 083001
ER -
ID: 62707263