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Study of the Semileptonic Decay Λ_{c}^{+}→Λe^{+}ν_{e}. / BESIII Collaboration ; Мучной, Николай Юрьевич.

In: Physical Review Letters, Vol. 129, No. 23, 02.12.2022, p. 231803.

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

Harvard

BESIII Collaboration & Мучной, НЮ 2022, 'Study of the Semileptonic Decay Λ_{c}^{+}→Λe^{+}ν_{e}', Physical Review Letters, vol. 129, no. 23, pp. 231803. https://doi.org/10.1103/PhysRevLett.129.231803

APA

BESIII Collaboration, & Мучной, Н. Ю. (2022). Study of the Semileptonic Decay Λ_{c}^{+}→Λe^{+}ν_{e}. Physical Review Letters, 129(23), 231803. https://doi.org/10.1103/PhysRevLett.129.231803

Vancouver

BESIII Collaboration, Мучной НЮ. Study of the Semileptonic Decay Λ_{c}^{+}→Λe^{+}ν_{e}. Physical Review Letters. 2022 Dec 2;129(23):231803. doi: 10.1103/PhysRevLett.129.231803

Author

BESIII Collaboration ; Мучной, Николай Юрьевич. / Study of the Semileptonic Decay Λ_{c}^{+}→Λe^{+}ν_{e}. In: Physical Review Letters. 2022 ; Vol. 129, No. 23. pp. 231803.

BibTeX

@article{fe19653757c94b19a550d4704eda1cf2,
title = "Study of the Semileptonic Decay Λ_{c}^{+}→Λe^{+}ν_{e}",
abstract = "The study of the Cabibbo-favored semileptonic decay Λ_{c}^{+}→Λe^{+}ν_{e} is reported using a 4.5  fb^{-1} data sample of e^{+}e^{-} annihilations collected at center-of-mass energies ranging from 4.600 GeV to 4.699 GeV with the BESIII detector at the BEPCII collider. The branching fraction of the decay is measured to be B(Λ_{c}^{+}→Λe^{+}ν_{e})=(3.56±0.11_{stat}±0.07_{syst})%, which is the most precise measurement to date. Furthermore, we perform an investigation of the internal dynamics in Λ_{c}^{+}→Λe^{+}ν_{e}. We provide the first direct comparisons of the differential decay rate and form factors with those predicted from lattice quantum chromodynamics (LQCD) calculations. Combining the measured branching fraction with a q^{2}-integrated rate predicted by LQCD, we determine |V_{cs}|=0.936±0.017_{B}±0.024_{LQCD}±0.007_{τ_{Λ_{c}}}.",
author = "{BESIII Collaboration} and Achasov, {M N} and C Chen and Nikolaev, {I B} and Мучной, {Николай Юрьевич}",
note = "Study of the Semileptonic Decay Λc+→Λe+νe / BESIII Collaboration // Physical Review Letters. – 2022. – Vol. 129, No. 23. – P. 231803. – DOI 10.1103/physrevlett.129.231803. ",
year = "2022",
month = dec,
day = "2",
doi = "10.1103/PhysRevLett.129.231803",
language = "English",
volume = "129",
pages = "231803",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "23",

}

RIS

TY - JOUR

T1 - Study of the Semileptonic Decay Λ_{c}^{+}→Λe^{+}ν_{e}

AU - BESIII Collaboration

AU - Achasov, M N

AU - Chen, C

AU - Nikolaev, I B

AU - Мучной, Николай Юрьевич

N1 - Study of the Semileptonic Decay Λc+→Λe+νe / BESIII Collaboration // Physical Review Letters. – 2022. – Vol. 129, No. 23. – P. 231803. – DOI 10.1103/physrevlett.129.231803.

PY - 2022/12/2

Y1 - 2022/12/2

N2 - The study of the Cabibbo-favored semileptonic decay Λ_{c}^{+}→Λe^{+}ν_{e} is reported using a 4.5  fb^{-1} data sample of e^{+}e^{-} annihilations collected at center-of-mass energies ranging from 4.600 GeV to 4.699 GeV with the BESIII detector at the BEPCII collider. The branching fraction of the decay is measured to be B(Λ_{c}^{+}→Λe^{+}ν_{e})=(3.56±0.11_{stat}±0.07_{syst})%, which is the most precise measurement to date. Furthermore, we perform an investigation of the internal dynamics in Λ_{c}^{+}→Λe^{+}ν_{e}. We provide the first direct comparisons of the differential decay rate and form factors with those predicted from lattice quantum chromodynamics (LQCD) calculations. Combining the measured branching fraction with a q^{2}-integrated rate predicted by LQCD, we determine |V_{cs}|=0.936±0.017_{B}±0.024_{LQCD}±0.007_{τ_{Λ_{c}}}.

AB - The study of the Cabibbo-favored semileptonic decay Λ_{c}^{+}→Λe^{+}ν_{e} is reported using a 4.5  fb^{-1} data sample of e^{+}e^{-} annihilations collected at center-of-mass energies ranging from 4.600 GeV to 4.699 GeV with the BESIII detector at the BEPCII collider. The branching fraction of the decay is measured to be B(Λ_{c}^{+}→Λe^{+}ν_{e})=(3.56±0.11_{stat}±0.07_{syst})%, which is the most precise measurement to date. Furthermore, we perform an investigation of the internal dynamics in Λ_{c}^{+}→Λe^{+}ν_{e}. We provide the first direct comparisons of the differential decay rate and form factors with those predicted from lattice quantum chromodynamics (LQCD) calculations. Combining the measured branching fraction with a q^{2}-integrated rate predicted by LQCD, we determine |V_{cs}|=0.936±0.017_{B}±0.024_{LQCD}±0.007_{τ_{Λ_{c}}}.

UR - https://pubmed.ncbi.nlm.nih.gov/36563214/

UR - https://www.elibrary.ru/item.asp?id=58544154

U2 - 10.1103/PhysRevLett.129.231803

DO - 10.1103/PhysRevLett.129.231803

M3 - Article

C2 - 36563214

VL - 129

SP - 231803

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 23

ER -

ID: 68333647