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Observation of ηc(1S,2S) and χcJ decays to 2(π+π−)η via ψ(3686) radiative transitions. / The BESIII Collaboration ; Николаев, Иван Борисович; Мучной, Николай Юрьевич.

в: Physical Review D, Том 111, № 5, 052013, 31.03.2025.

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

Harvard

The BESIII Collaboration, Николаев, ИБ & Мучной, НЮ 2025, 'Observation of ηc(1S,2S) and χcJ decays to 2(π+π−)η via ψ(3686) radiative transitions', Physical Review D, Том. 111, № 5, 052013. https://doi.org/10.1103/PhysRevD.111.052013

APA

The BESIII Collaboration, Николаев, И. Б., & Мучной, Н. Ю. (2025). Observation of ηc(1S,2S) and χcJ decays to 2(π+π−)η via ψ(3686) radiative transitions. Physical Review D, 111(5), [052013]. https://doi.org/10.1103/PhysRevD.111.052013

Vancouver

The BESIII Collaboration, Николаев ИБ, Мучной НЮ. Observation of ηc(1S,2S) and χcJ decays to 2(π+π−)η via ψ(3686) radiative transitions. Physical Review D. 2025 март 31;111(5):052013. doi: 10.1103/PhysRevD.111.052013

Author

The BESIII Collaboration ; Николаев, Иван Борисович ; Мучной, Николай Юрьевич. / Observation of ηc(1S,2S) and χcJ decays to 2(π+π−)η via ψ(3686) radiative transitions. в: Physical Review D. 2025 ; Том 111, № 5.

BibTeX

@article{cb582822b7594382af27785663f124ed,
title = "Observation of ηc(1S,2S) and χcJ decays to 2(π+π−)η via ψ(3686) radiative transitions",
abstract = "Based on (2712.4±14.1)×106 ψ(3686) decays collected with the BESIII detector, we have observed, for the first time, the hadronic decays of S- and P-wave charmonium states into 2(π+π-)η via radiative transitions from ψ(3686). The branching fraction of the decay ηc(1S)→2(π+π-)η has a significant dependence on the interference pattern between ηc(1S) and non-ηc(1S) processes. We measure it in both the destructive and constructive interference scenarios for the first time. The mass and width of the ηc(1S) are measured to be M=(2984.14±0.13±0.38) MeV/c2 and Γ=(28.82±0.11±0.82) MeV, respectively. Clear signals for the decays of the χcJ(J=0,1,2) and the ηc(2S) to 2(π+π-)η are also observed for the first time, and the corresponding branching fractions are measured. The ratio of the branching fractions between the ηc(2S) and ηc(1S) decays is significantly lower than the theoretical prediction, which might suggest different dynamics in their decays.",
author = "{BESIII Collaboration} and M. n. Achasov and R. Aliberti and Николаев, {Иван Борисович} and Мучной, {Николай Юрьевич}",
note = "Observation of ηc(1S,2S) and χcJ decays to 2(π+π−)η via ψ(3686) radiative transitions / M. Ablikim, M. N. Achasov, P. Adlarson [et al.] // Physical Review D. – 2025. – Vol. 111, No. 5. – P. 052013. – DOI 10.1103/physrevd.111.052013.",
year = "2025",
month = mar,
day = "31",
doi = "10.1103/PhysRevD.111.052013",
language = "English",
volume = "111",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "5",

}

RIS

TY - JOUR

T1 - Observation of ηc(1S,2S) and χcJ decays to 2(π+π−)η via ψ(3686) radiative transitions

AU - BESIII Collaboration

AU - Achasov, M. n.

AU - Aliberti, R.

AU - Николаев, Иван Борисович

AU - Мучной, Николай Юрьевич

N1 - Observation of ηc(1S,2S) and χcJ decays to 2(π+π−)η via ψ(3686) radiative transitions / M. Ablikim, M. N. Achasov, P. Adlarson [et al.] // Physical Review D. – 2025. – Vol. 111, No. 5. – P. 052013. – DOI 10.1103/physrevd.111.052013.

PY - 2025/3/31

Y1 - 2025/3/31

N2 - Based on (2712.4±14.1)×106 ψ(3686) decays collected with the BESIII detector, we have observed, for the first time, the hadronic decays of S- and P-wave charmonium states into 2(π+π-)η via radiative transitions from ψ(3686). The branching fraction of the decay ηc(1S)→2(π+π-)η has a significant dependence on the interference pattern between ηc(1S) and non-ηc(1S) processes. We measure it in both the destructive and constructive interference scenarios for the first time. The mass and width of the ηc(1S) are measured to be M=(2984.14±0.13±0.38) MeV/c2 and Γ=(28.82±0.11±0.82) MeV, respectively. Clear signals for the decays of the χcJ(J=0,1,2) and the ηc(2S) to 2(π+π-)η are also observed for the first time, and the corresponding branching fractions are measured. The ratio of the branching fractions between the ηc(2S) and ηc(1S) decays is significantly lower than the theoretical prediction, which might suggest different dynamics in their decays.

AB - Based on (2712.4±14.1)×106 ψ(3686) decays collected with the BESIII detector, we have observed, for the first time, the hadronic decays of S- and P-wave charmonium states into 2(π+π-)η via radiative transitions from ψ(3686). The branching fraction of the decay ηc(1S)→2(π+π-)η has a significant dependence on the interference pattern between ηc(1S) and non-ηc(1S) processes. We measure it in both the destructive and constructive interference scenarios for the first time. The mass and width of the ηc(1S) are measured to be M=(2984.14±0.13±0.38) MeV/c2 and Γ=(28.82±0.11±0.82) MeV, respectively. Clear signals for the decays of the χcJ(J=0,1,2) and the ηc(2S) to 2(π+π-)η are also observed for the first time, and the corresponding branching fractions are measured. The ratio of the branching fractions between the ηc(2S) and ηc(1S) decays is significantly lower than the theoretical prediction, which might suggest different dynamics in their decays.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-105003753552&origin=inward&txGid=5bc16dc43739d8775b93a6fb285aa9ef

UR - https://elibrary.ru/item.asp?id=82015402

UR - https://www.mendeley.com/catalogue/cfc44b42-9a77-319e-850a-1d2d2bbf63d2/

U2 - 10.1103/PhysRevD.111.052013

DO - 10.1103/PhysRevD.111.052013

M3 - Article

VL - 111

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 5

M1 - 052013

ER -

ID: 66126275