Study of the decay 𝐷0 →𝜌⁢(770)−⁢𝑒+⁢𝜈𝑒

BESIII Collaboration; M. Ablikim; M.N. Achasov; P. Adlarson; O. Afedulidis; X.C. Ai; R. Aliberti; A. Amoroso; Nasser Kalantar-Nayestanaki; Myroslav Kavatsyuk; Johan Messchendorp

doi:10.1103/PhysRevD.110.112018

Study of the decay 𝐷⁰ →𝜌⁢(770)⁻⁢𝑒⁺⁢𝜈_𝑒

BESIII Collaboration, M. Ablikim^*, M.N. Achasov, P. Adlarson, O. Afedulidis, X.C. Ai, R. Aliberti, A. Amoroso, Nasser Kalantar-Nayestanaki, Myroslav Kavatsyuk, Johan Messchendorp

^*Corresponding author for this work

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Abstract

We present a study of the semileptonic decay D0→π-π0e+νe using an e+e- annihilation data sample of 7.93 fb-1 collected at the center-of-mass energy of 3.773 GeV with the BESIII detector. The branching fraction of D0→ρ(770)-e+νe is measured to be (1.439±0.033(stat)±0.027(syst))×10-3, which is a factor 1.6 more precise than previous measurements. By performing an amplitude analysis, we measure the hadronic form-factor ratios of D0→ρ(770)-e+νe at q2=0 assuming the single-pole-dominance parametrization: rV=V(0)/A1(0)=1.548±0.079(stat)±0.041(syst) and r2=A2(0)/A1(0)=0.823±0.056(stat)±0.026(syst).

Original language	English
Article number	112018
Number of pages	13
Journal	Physical Review D
Volume	110
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.110.112018
Publication status	Published - 1-Dec-2024

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@article{9fd856e1d1d744fa8c4b76edce5152ab,

title = "Study of the decay 𝐷0 →𝜌⁢(770)−⁢𝑒+⁢𝜈𝑒",

abstract = "We present a study of the semileptonic decay D0→π-π0e+νe using an e+e- annihilation data sample of 7.93 fb-1 collected at the center-of-mass energy of 3.773 GeV with the BESIII detector. The branching fraction of D0→ρ(770)-e+νe is measured to be (1.439±0.033(stat)±0.027(syst))×10-3, which is a factor 1.6 more precise than previous measurements. By performing an amplitude analysis, we measure the hadronic form-factor ratios of D0→ρ(770)-e+νe at q2=0 assuming the single-pole-dominance parametrization: rV=V(0)/A1(0)=1.548±0.079(stat)±0.041(syst) and r2=A2(0)/A1(0)=0.823±0.056(stat)±0.026(syst).",

author = "{BESIII Collaboration} and M. Ablikim and M.N. Achasov and P. Adlarson and O. Afedulidis and X.C. Ai and R. Aliberti and A. Amoroso and Nasser Kalantar-Nayestanaki and Myroslav Kavatsyuk and Johan Messchendorp",

year = "2024",

month = dec,

day = "1",

doi = "10.1103/PhysRevD.110.112018",

language = "English",

volume = "110",

journal = "Physical Review D",

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T1 - Study of the decay 𝐷0 →𝜌⁢(770)−⁢𝑒+⁢𝜈𝑒

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M.N.

AU - Adlarson, P.

AU - Afedulidis, O.

AU - Ai, X.C.

AU - Aliberti, R.

AU - Amoroso, A.

AU - Kalantar-Nayestanaki, Nasser

AU - Kavatsyuk, Myroslav

AU - Messchendorp, Johan

PY - 2024/12/1

Y1 - 2024/12/1

N2 - We present a study of the semileptonic decay D0→π-π0e+νe using an e+e- annihilation data sample of 7.93 fb-1 collected at the center-of-mass energy of 3.773 GeV with the BESIII detector. The branching fraction of D0→ρ(770)-e+νe is measured to be (1.439±0.033(stat)±0.027(syst))×10-3, which is a factor 1.6 more precise than previous measurements. By performing an amplitude analysis, we measure the hadronic form-factor ratios of D0→ρ(770)-e+νe at q2=0 assuming the single-pole-dominance parametrization: rV=V(0)/A1(0)=1.548±0.079(stat)±0.041(syst) and r2=A2(0)/A1(0)=0.823±0.056(stat)±0.026(syst).

AB - We present a study of the semileptonic decay D0→π-π0e+νe using an e+e- annihilation data sample of 7.93 fb-1 collected at the center-of-mass energy of 3.773 GeV with the BESIII detector. The branching fraction of D0→ρ(770)-e+νe is measured to be (1.439±0.033(stat)±0.027(syst))×10-3, which is a factor 1.6 more precise than previous measurements. By performing an amplitude analysis, we measure the hadronic form-factor ratios of D0→ρ(770)-e+νe at q2=0 assuming the single-pole-dominance parametrization: rV=V(0)/A1(0)=1.548±0.079(stat)±0.041(syst) and r2=A2(0)/A1(0)=0.823±0.056(stat)±0.026(syst).

U2 - 10.1103/PhysRevD.110.112018

DO - 10.1103/PhysRevD.110.112018

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SN - 1550-7998

VL - 110

JO - Physical Review D

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IS - 11

M1 - 112018

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