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Determination of Spin-Parity Quantum Numbers for the Narrow Structure near the pΛ[over ¯] Threshold in e^{+}e^{-}→pK^{-}Λ[over ¯]+c.c. / BESIII Collaboration ; Мучной, Николай Юрьевич; Николаев, Иван Борисович.

In: Physical Review Letters, Vol. 131, No. 15, 13.10.2023, p. 151901.

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

Harvard

BESIII Collaboration, Мучной, НЮ & Николаев, ИБ 2023, 'Determination of Spin-Parity Quantum Numbers for the Narrow Structure near the pΛ[over ¯] Threshold in e^{+}e^{-}→pK^{-}Λ[over ¯]+c.c', Physical Review Letters, vol. 131, no. 15, pp. 151901. https://doi.org/10.1103/PhysRevLett.131.151901

APA

BESIII Collaboration, Мучной, Н. Ю., & Николаев, И. Б. (2023). Determination of Spin-Parity Quantum Numbers for the Narrow Structure near the pΛ[over ¯] Threshold in e^{+}e^{-}→pK^{-}Λ[over ¯]+c.c. Physical Review Letters, 131(15), 151901. https://doi.org/10.1103/PhysRevLett.131.151901

Vancouver

BESIII Collaboration, Мучной НЮ, Николаев ИБ. Determination of Spin-Parity Quantum Numbers for the Narrow Structure near the pΛ[over ¯] Threshold in e^{+}e^{-}→pK^{-}Λ[over ¯]+c.c. Physical Review Letters. 2023 Oct 13;131(15):151901. doi: 10.1103/PhysRevLett.131.151901

Author

BESIII Collaboration ; Мучной, Николай Юрьевич ; Николаев, Иван Борисович. / Determination of Spin-Parity Quantum Numbers for the Narrow Structure near the pΛ[over ¯] Threshold in e^{+}e^{-}→pK^{-}Λ[over ¯]+c.c. In: Physical Review Letters. 2023 ; Vol. 131, No. 15. pp. 151901.

BibTeX

@article{d74bab687d4b49008df509f9c1cebfc1,
title = "Determination of Spin-Parity Quantum Numbers for the Narrow Structure near the pΛ[over ¯] Threshold in e^{+}e^{-}→pK^{-}Λ[over ¯]+c.c",
abstract = "A narrow structure in the pΛ[over ¯] system near the mass threshold, named as X(2085), is observed in the process e^{+}e^{-}→pK^{-}Λ[over ¯] with a statistical significance greater than 20σ. Its spin and parity are determined for the first time to be J^{P}=1^{+} in an amplitude analysis, with a statistical significance greater than 5σ over other quantum numbers (0^{-},1^{-} and 2^{+}). The pole positions of X(2085) are measured to be M_{pole}=(2084_{-2}^{+4}±9)  MeV and Γ_{pole}=(58_{-3}^{+4}±25)  MeV, where the first uncertainties are statistical and the second ones are systematic. The analysis is based on the study of the process e^{+}e^{-}→pK^{-}Λ[over ¯] and uses the data samples collected with the BESIII detector at the center-of-mass energies sqrt[s]=4.008, 4.178, 4.226, 4.258, 4.416, and 4.682 GeV with a total integrated luminosity of 8.35  fb^{-1}.",
author = "{BESIII Collaboration} and Achasov, {M N} and C Chen and Мучной, {Николай Юрьевич} and Николаев, {Иван Борисович}",
note = "Determination of Spin-Parity Quantum Numbers for the Narrow Structure near the pΛ¯ Threshold in e+e−→pK−Λ¯+c.c. / BESIII Collaboration // Physical Review Letters. – 2023. – Vol. 131, No. 15. – P. 151901. – DOI 10.1103/physrevlett.131.151901",
year = "2023",
month = oct,
day = "13",
doi = "10.1103/PhysRevLett.131.151901",
language = "English",
volume = "131",
pages = "151901",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "15",

}

RIS

TY - JOUR

T1 - Determination of Spin-Parity Quantum Numbers for the Narrow Structure near the pΛ[over ¯] Threshold in e^{+}e^{-}→pK^{-}Λ[over ¯]+c.c

AU - BESIII Collaboration

AU - Achasov, M N

AU - Chen, C

AU - Мучной, Николай Юрьевич

AU - Николаев, Иван Борисович

N1 - Determination of Spin-Parity Quantum Numbers for the Narrow Structure near the pΛ¯ Threshold in e+e−→pK−Λ¯+c.c. / BESIII Collaboration // Physical Review Letters. – 2023. – Vol. 131, No. 15. – P. 151901. – DOI 10.1103/physrevlett.131.151901

PY - 2023/10/13

Y1 - 2023/10/13

N2 - A narrow structure in the pΛ[over ¯] system near the mass threshold, named as X(2085), is observed in the process e^{+}e^{-}→pK^{-}Λ[over ¯] with a statistical significance greater than 20σ. Its spin and parity are determined for the first time to be J^{P}=1^{+} in an amplitude analysis, with a statistical significance greater than 5σ over other quantum numbers (0^{-},1^{-} and 2^{+}). The pole positions of X(2085) are measured to be M_{pole}=(2084_{-2}^{+4}±9)  MeV and Γ_{pole}=(58_{-3}^{+4}±25)  MeV, where the first uncertainties are statistical and the second ones are systematic. The analysis is based on the study of the process e^{+}e^{-}→pK^{-}Λ[over ¯] and uses the data samples collected with the BESIII detector at the center-of-mass energies sqrt[s]=4.008, 4.178, 4.226, 4.258, 4.416, and 4.682 GeV with a total integrated luminosity of 8.35  fb^{-1}.

AB - A narrow structure in the pΛ[over ¯] system near the mass threshold, named as X(2085), is observed in the process e^{+}e^{-}→pK^{-}Λ[over ¯] with a statistical significance greater than 20σ. Its spin and parity are determined for the first time to be J^{P}=1^{+} in an amplitude analysis, with a statistical significance greater than 5σ over other quantum numbers (0^{-},1^{-} and 2^{+}). The pole positions of X(2085) are measured to be M_{pole}=(2084_{-2}^{+4}±9)  MeV and Γ_{pole}=(58_{-3}^{+4}±25)  MeV, where the first uncertainties are statistical and the second ones are systematic. The analysis is based on the study of the process e^{+}e^{-}→pK^{-}Λ[over ¯] and uses the data samples collected with the BESIII detector at the center-of-mass energies sqrt[s]=4.008, 4.178, 4.226, 4.258, 4.416, and 4.682 GeV with a total integrated luminosity of 8.35  fb^{-1}.

UR - https://pubmed.ncbi.nlm.nih.gov/37897776/

UR - https://www.elibrary.ru/item.asp?id=63250080

U2 - 10.1103/PhysRevLett.131.151901

DO - 10.1103/PhysRevLett.131.151901

M3 - Article

C2 - 37897776

VL - 131

SP - 151901

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 15

ER -

ID: 68338141