Observation of an Axial-Vector State in the Study of the Decay ψ(3686)→ϕηη′

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Observation of an Axial-Vector State in the Study of the Decay ψ(3686)→ϕηη′. / The BESIII Collaboration ; Николаев, Иван Борисович ; Ачасов, Михаил Николаевич и др.

в: Physical Review Letters, Том 134, № 19, 191901, 12.05.2025.

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

BibTeX

@article{c9d9bb799a0b44b3a524f275327d8348,

title = "Observation of an Axial-Vector State in the Study of the Decay ψ(3686)→ϕηη′",

abstract = "Using events collected with the BESIII detector at BEPCII, a partial wave analysis of the decay is performed with the covariant tensor approach. In addition to the established states ) and 휙⁡(2170), an axial-vector state with a mass near 2.3 GeV/푐2 is observed for the first time. Its mass and width are measured to be 2316±9stat±3⁢0syst MeV/푐2 and 89±1⁢5stat±2⁢6syst MeV, respectively. The product branching fractions of ℬ⁡[휓⁡(3686)→푋⁡(2300)⁢휂′]⁢ℬ⁡[푋⁡(2300)→휙⁢휂] and ℬ⁡[휓⁡(3686)→푋⁡(2300)⁢휂]⁢ℬ⁡[푋⁡(2300)→휙⁢휂′] are determined to be (4.8±1.3stat±0.7syst)×10−6 and (2.2±0.7stat±0.7syst)×10−6, respectively. The branching fraction ℬ⁡[휓⁡(3686)→휙⁢휂⁢휂′] is measured for the first time to be (3.14±0.1⁢7stat±0.2⁢4syst)×10−5. The first uncertainties are statistical and the second are systematic.",

author = "{BESIII Collaboration} and M. Ablikim and Николаев, {Иван Борисович} and Ачасов, {Михаил Николаевич} and Мучной, {Николай Юрьевич}",

year = "2025",

month = may,

day = "12",

doi = "10.1103/PhysRevLett.134.191901",

language = "English",

volume = "134",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "19",

}

RIS

TY - JOUR

T1 - Observation of an Axial-Vector State in the Study of the Decay ψ(3686)→ϕηη′

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Николаев, Иван Борисович

AU - Ачасов, Михаил Николаевич

AU - Мучной, Николай Юрьевич

PY - 2025/5/12

Y1 - 2025/5/12

N2 - Using events collected with the BESIII detector at BEPCII, a partial wave analysis of the decay is performed with the covariant tensor approach. In addition to the established states ) and 휙⁡(2170), an axial-vector state with a mass near 2.3 GeV/푐2 is observed for the first time. Its mass and width are measured to be 2316±9stat±3⁢0syst MeV/푐2 and 89±1⁢5stat±2⁢6syst MeV, respectively. The product branching fractions of ℬ⁡[휓⁡(3686)→푋⁡(2300)⁢휂′]⁢ℬ⁡[푋⁡(2300)→휙⁢휂] and ℬ⁡[휓⁡(3686)→푋⁡(2300)⁢휂]⁢ℬ⁡[푋⁡(2300)→휙⁢휂′] are determined to be (4.8±1.3stat±0.7syst)×10−6 and (2.2±0.7stat±0.7syst)×10−6, respectively. The branching fraction ℬ⁡[휓⁡(3686)→휙⁢휂⁢휂′] is measured for the first time to be (3.14±0.1⁢7stat±0.2⁢4syst)×10−5. The first uncertainties are statistical and the second are systematic.

AB - Using events collected with the BESIII detector at BEPCII, a partial wave analysis of the decay is performed with the covariant tensor approach. In addition to the established states ) and 휙⁡(2170), an axial-vector state with a mass near 2.3 GeV/푐2 is observed for the first time. Its mass and width are measured to be 2316±9stat±3⁢0syst MeV/푐2 and 89±1⁢5stat±2⁢6syst MeV, respectively. The product branching fractions of ℬ⁡[휓⁡(3686)→푋⁡(2300)⁢휂′]⁢ℬ⁡[푋⁡(2300)→휙⁢휂] and ℬ⁡[휓⁡(3686)→푋⁡(2300)⁢휂]⁢ℬ⁡[푋⁡(2300)→휙⁢휂′] are determined to be (4.8±1.3stat±0.7syst)×10−6 and (2.2±0.7stat±0.7syst)×10−6, respectively. The branching fraction ℬ⁡[휓⁡(3686)→휙⁢휂⁢휂′] is measured for the first time to be (3.14±0.1⁢7stat±0.2⁢4syst)×10−5. The first uncertainties are statistical and the second are systematic.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-105005952745&origin=inward&txGid=a6da21ad8d05cd04afb851d23c9d4024

UR - https://www.mendeley.com/catalogue/d6fd5a76-ca61-39ba-ae93-a88434818ace/

U2 - 10.1103/PhysRevLett.134.191901

DO - 10.1103/PhysRevLett.134.191901

M3 - Article

VL - 134

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 19

M1 - 191901

ER -

ID: 67265450