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First Observation of the Direct Production of the χ_{c1} in e^{+}e^{-} Annihilation. / The BESIII Collaboration ; Николаев, Иван Борисович; Мучной, Николай Юрьевич.

в: Physical Review Letters, Том 129, № 12, 16.09.2022, стр. 122001.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

Harvard

The BESIII Collaboration, Николаев, ИБ & Мучной, НЮ 2022, 'First Observation of the Direct Production of the χ_{c1} in e^{+}e^{-} Annihilation', Physical Review Letters, Том. 129, № 12, стр. 122001. https://doi.org/10.1103/PhysRevLett.129.122001

APA

The BESIII Collaboration, Николаев, И. Б., & Мучной, Н. Ю. (2022). First Observation of the Direct Production of the χ_{c1} in e^{+}e^{-} Annihilation. Physical Review Letters, 129(12), 122001. https://doi.org/10.1103/PhysRevLett.129.122001

Vancouver

The BESIII Collaboration, Николаев ИБ, Мучной НЮ. First Observation of the Direct Production of the χ_{c1} in e^{+}e^{-} Annihilation. Physical Review Letters. 2022 сент. 16;129(12):122001. doi: 10.1103/PhysRevLett.129.122001

Author

The BESIII Collaboration ; Николаев, Иван Борисович ; Мучной, Николай Юрьевич. / First Observation of the Direct Production of the χ_{c1} in e^{+}e^{-} Annihilation. в: Physical Review Letters. 2022 ; Том 129, № 12. стр. 122001.

BibTeX

@article{6daa90f434b443dda6c9d785a75c62a6,
title = "First Observation of the Direct Production of the χ_{c1} in e^{+}e^{-} Annihilation",
abstract = "We study the direct production of the J^{PC}=1^{++} charmonium state χ_{c1}(1P) in electron-positron annihilation by carrying out an energy scan around the mass of the χ_{c1}(1P). The data were collected with the BESIII detector at the BEPCII collider. An interference pattern between the signal process e^{+}e^{-}→χ_{c1}(1P)→γJ/ψ→γμ^{+}μ^{-} and the background processes e^{+}e^{-}→γ_{ISR}J/ψ→γ_{ISR}μ^{+}μ^{-} and e^{+}e^{-}→γ_{ISR}μ^{+}μ^{-} is observed by combining all the data samples. The χ_{c1}(1P) signal is observed with a significance of 5.1σ. This is the first observation of a C-even state directly produced in e^{+}e^{-} annihilation. The electronic width of the χ_{c1}(1P) resonance is determined to be Γ_{ee}=(0.12_{-0.08}^{+0.13})  eV, which is of the same order of magnitude as theoretical calculations.",
author = "{BESIII Collaboration} and Achasov, {M N} and Tian, {Y T} and Николаев, {Иван Борисович} and Мучной, {Николай Юрьевич}",
note = "First Observation of the Direct Production of the χc1 in e+e− Annihilation /BESIII Collaboration // Physical Review Letters. – 2022. – Vol. 129, No. 12. – P. 122001. – DOI 10.1103/physrevlett.129.122001.",
year = "2022",
month = sep,
day = "16",
doi = "10.1103/PhysRevLett.129.122001",
language = "English",
volume = "129",
pages = "122001",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "12",

}

RIS

TY - JOUR

T1 - First Observation of the Direct Production of the χ_{c1} in e^{+}e^{-} Annihilation

AU - BESIII Collaboration

AU - Achasov, M N

AU - Tian, Y T

AU - Николаев, Иван Борисович

AU - Мучной, Николай Юрьевич

N1 - First Observation of the Direct Production of the χc1 in e+e− Annihilation /BESIII Collaboration // Physical Review Letters. – 2022. – Vol. 129, No. 12. – P. 122001. – DOI 10.1103/physrevlett.129.122001.

PY - 2022/9/16

Y1 - 2022/9/16

N2 - We study the direct production of the J^{PC}=1^{++} charmonium state χ_{c1}(1P) in electron-positron annihilation by carrying out an energy scan around the mass of the χ_{c1}(1P). The data were collected with the BESIII detector at the BEPCII collider. An interference pattern between the signal process e^{+}e^{-}→χ_{c1}(1P)→γJ/ψ→γμ^{+}μ^{-} and the background processes e^{+}e^{-}→γ_{ISR}J/ψ→γ_{ISR}μ^{+}μ^{-} and e^{+}e^{-}→γ_{ISR}μ^{+}μ^{-} is observed by combining all the data samples. The χ_{c1}(1P) signal is observed with a significance of 5.1σ. This is the first observation of a C-even state directly produced in e^{+}e^{-} annihilation. The electronic width of the χ_{c1}(1P) resonance is determined to be Γ_{ee}=(0.12_{-0.08}^{+0.13})  eV, which is of the same order of magnitude as theoretical calculations.

AB - We study the direct production of the J^{PC}=1^{++} charmonium state χ_{c1}(1P) in electron-positron annihilation by carrying out an energy scan around the mass of the χ_{c1}(1P). The data were collected with the BESIII detector at the BEPCII collider. An interference pattern between the signal process e^{+}e^{-}→χ_{c1}(1P)→γJ/ψ→γμ^{+}μ^{-} and the background processes e^{+}e^{-}→γ_{ISR}J/ψ→γ_{ISR}μ^{+}μ^{-} and e^{+}e^{-}→γ_{ISR}μ^{+}μ^{-} is observed by combining all the data samples. The χ_{c1}(1P) signal is observed with a significance of 5.1σ. This is the first observation of a C-even state directly produced in e^{+}e^{-} annihilation. The electronic width of the χ_{c1}(1P) resonance is determined to be Γ_{ee}=(0.12_{-0.08}^{+0.13})  eV, which is of the same order of magnitude as theoretical calculations.

UR - https://www.elibrary.ru/item.asp?id=58483293

UR - https://pubmed.ncbi.nlm.nih.gov/36179210/

U2 - 10.1103/PhysRevLett.129.122001

DO - 10.1103/PhysRevLett.129.122001

M3 - Article

C2 - 36179210

VL - 129

SP - 122001

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 12

ER -

ID: 68331984