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First Experimental Study of the Purely Leptonic Decay Ds*+→e+νe. / BESIII Collaboration ; Николаев, Иван Борисович; Мучной, Николай Юрьевич.

In: Physical Review Letters, Vol. 131, No. 14, 141802, 06.10.2023.

Research output: Contribution to journal › Article › peer-review

Harvard

BESIII Collaboration, Николаев, ИБ & Мучной, НЮ 2023, 'First Experimental Study of the Purely Leptonic Decay Ds*+→e+νe', Physical Review Letters, vol. 131, no. 14, 141802. https://doi.org/10.1103/PhysRevLett.131.141802

APA

BESIII Collaboration, Николаев, И. Б., & Мучной, Н. Ю. (2023). First Experimental Study of the Purely Leptonic Decay Ds*+→e+νe. Physical Review Letters, 131(14), [141802]. https://doi.org/10.1103/PhysRevLett.131.141802

Vancouver

BESIII Collaboration, Николаев ИБ, Мучной НЮ. First Experimental Study of the Purely Leptonic Decay Ds*+→e+νe. Physical Review Letters. 2023 Oct 6;131(14):141802. doi: 10.1103/PhysRevLett.131.141802

Author

BESIII Collaboration ; Николаев, Иван Борисович ; Мучной, Николай Юрьевич. / First Experimental Study of the Purely Leptonic Decay Ds*+→e+νe. In: Physical Review Letters. 2023 ; Vol. 131, No. 14.

BibTeX

@article{f2aa317f6f054c9fa759975232fa8041,
title = "First Experimental Study of the Purely Leptonic Decay Ds*+→e+νe",
abstract = "Using 7.33 fb-1 of e+e- collision data taken with the BESIII detector at the BEPCII collider, we report the first experimental study of the purely leptonic decay Ds∗+→e+νe. Our data contain a signal of this decay with a statistical significance of 2.9σ. The branching fraction of Ds∗+→e+νe is measured to be (2.1-0.9stat+1.2±0.2syst)×10-5, corresponding to an upper limit of 4.0×10-5 at the 90% confidence level. Taking the total width of the Ds∗+ [(0.070±0.028) keV] predicted with the radiative Ds∗+ decay from the lattice QCD calculation as input, the decay constant of the Ds∗+ is determined to be fDs∗+=(214-46stat+61±44syst) MeV, corresponding to an upper limit of 354 MeV at the 90% confidence level.",
author = "{BESIII Collaboration} and M. Ablikim and M. n. Achasov and Николаев, {Иван Борисович} and Мучной, {Николай Юрьевич}",
note = "First Experimental Study of the Purely Leptonic Decay Ds*+→e+νe / BESIII Collaboration// Physical Review Letters. – 2023. – Vol. 131, No. 14. – P. 141802. – DOI 10.1103/physrevlett.131.141802. ",
year = "2023",
month = oct,
day = "6",
doi = "10.1103/PhysRevLett.131.141802",
language = "English",
volume = "131",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "14",

}

RIS

TY - JOUR

T1 - First Experimental Study of the Purely Leptonic Decay Ds*+→e+νe

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. n.

AU - Николаев, Иван Борисович

AU - Мучной, Николай Юрьевич

N1 - First Experimental Study of the Purely Leptonic Decay Ds*+→e+νe / BESIII Collaboration// Physical Review Letters. – 2023. – Vol. 131, No. 14. – P. 141802. – DOI 10.1103/physrevlett.131.141802.

PY - 2023/10/6

Y1 - 2023/10/6

N2 - Using 7.33 fb-1 of e+e- collision data taken with the BESIII detector at the BEPCII collider, we report the first experimental study of the purely leptonic decay Ds∗+→e+νe. Our data contain a signal of this decay with a statistical significance of 2.9σ. The branching fraction of Ds∗+→e+νe is measured to be (2.1-0.9stat+1.2±0.2syst)×10-5, corresponding to an upper limit of 4.0×10-5 at the 90% confidence level. Taking the total width of the Ds∗+ [(0.070±0.028) keV] predicted with the radiative Ds∗+ decay from the lattice QCD calculation as input, the decay constant of the Ds∗+ is determined to be fDs∗+=(214-46stat+61±44syst) MeV, corresponding to an upper limit of 354 MeV at the 90% confidence level.

AB - Using 7.33 fb-1 of e+e- collision data taken with the BESIII detector at the BEPCII collider, we report the first experimental study of the purely leptonic decay Ds∗+→e+νe. Our data contain a signal of this decay with a statistical significance of 2.9σ. The branching fraction of Ds∗+→e+νe is measured to be (2.1-0.9stat+1.2±0.2syst)×10-5, corresponding to an upper limit of 4.0×10-5 at the 90% confidence level. Taking the total width of the Ds∗+ [(0.070±0.028) keV] predicted with the radiative Ds∗+ decay from the lattice QCD calculation as input, the decay constant of the Ds∗+ is determined to be fDs∗+=(214-46stat+61±44syst) MeV, corresponding to an upper limit of 354 MeV at the 90% confidence level.

UR - https://www.elibrary.ru/item.asp?id=63164803

UR - https://www.mendeley.com/catalogue/51af9d0d-9f07-3998-a7f6-6dff30fa5afb/

U2 - 10.1103/PhysRevLett.131.141802

DO - 10.1103/PhysRevLett.131.141802

M3 - Article

VL - 131

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 14

M1 - 141802

ER -

ID: 68350100