Observation of the Anomalous Shape of X (1840) in J/ψ →γ3 (π+π-) Indicating a Second Resonance Near p p ¯ Threshold

Standard

Observation of the Anomalous Shape of X (1840) in J/ψ →γ3 (π+π-) Indicating a Second Resonance Near p p ¯ Threshold. / The BESIII Collaboration ; Мучной, Николай Юрьевич.

в: Physical Review Letters, Том 132, № 15, 151901, 12.04.2024.

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

BibTeX

@article{dca1add0d3ce4251aa0268f34548a80f,

title = "Observation of the Anomalous Shape of X (1840) in J/ψ →γ3 (π+π-) Indicating a Second Resonance Near p p ¯ Threshold",

abstract = "Using a sample of (10087±44)×106 J/ψ events, which is about 45 times larger than that was previously analyzed, a further investigation on the J/ψ→γ3(π+π-) decay is performed. A significant distortion at 1.84 GeV/c2 in the line shape of the 3(π+π-) invariant mass spectrum is observed for the first time, which could be resolved by two overlapping resonant structures, X(1840) and X(1880). The new state X(1880) is observed with a statistical significance larger than 10σ. The mass and width of X(1880) are determined to be 1882.1±1.7±0.7 MeV/c2 and 30.7±5.5±2.4 MeV, respectively, which indicates the existence of a pp¯ bound state.",

author = "{BESIII Collaboration} and Achasov, {M. N.} and Nikolaev, {I. B.} and Y. Pan and Мучной, {Николай Юрьевич}",

note = "Observation of the Anomalous Shape of X(1840) in J/ψ→γ3(π+π−) Indicating a Second Resonance Near pp¯ Threshold / The BESIII Collaboration // Physical Review Letters. – 2024. – Vol. 132, No. 15. – P. 151901. – DOI 10.1103/physrevlett.132.151901. – EDN PGDUZJ.",

year = "2024",

month = apr,

day = "12",

doi = "10.1103/PhysRevLett.132.151901",

language = "English",

volume = "132",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "15",

}

RIS

TY - JOUR

T1 - Observation of the Anomalous Shape of X (1840) in J/ψ →γ3 (π+π-) Indicating a Second Resonance Near p p ¯ Threshold

AU - BESIII Collaboration

AU - Achasov, M. N.

AU - Nikolaev, I. B.

AU - Pan, Y.

AU - Мучной, Николай Юрьевич

N1 - Observation of the Anomalous Shape of X(1840) in J/ψ→γ3(π+π−) Indicating a Second Resonance Near pp¯ Threshold / The BESIII Collaboration // Physical Review Letters. – 2024. – Vol. 132, No. 15. – P. 151901. – DOI 10.1103/physrevlett.132.151901. – EDN PGDUZJ.

PY - 2024/4/12

Y1 - 2024/4/12

N2 - Using a sample of (10087±44)×106 J/ψ events, which is about 45 times larger than that was previously analyzed, a further investigation on the J/ψ→γ3(π+π-) decay is performed. A significant distortion at 1.84 GeV/c2 in the line shape of the 3(π+π-) invariant mass spectrum is observed for the first time, which could be resolved by two overlapping resonant structures, X(1840) and X(1880). The new state X(1880) is observed with a statistical significance larger than 10σ. The mass and width of X(1880) are determined to be 1882.1±1.7±0.7 MeV/c2 and 30.7±5.5±2.4 MeV, respectively, which indicates the existence of a pp¯ bound state.

AB - Using a sample of (10087±44)×106 J/ψ events, which is about 45 times larger than that was previously analyzed, a further investigation on the J/ψ→γ3(π+π-) decay is performed. A significant distortion at 1.84 GeV/c2 in the line shape of the 3(π+π-) invariant mass spectrum is observed for the first time, which could be resolved by two overlapping resonant structures, X(1840) and X(1880). The new state X(1880) is observed with a statistical significance larger than 10σ. The mass and width of X(1880) are determined to be 1882.1±1.7±0.7 MeV/c2 and 30.7±5.5±2.4 MeV, respectively, which indicates the existence of a pp¯ bound state.

UR - https://www.mendeley.com/catalogue/aaf4655d-d4d1-357f-9c97-62dca7b96454/

UR - https://pubmed.ncbi.nlm.nih.gov/38682972/

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85190064772&origin=inward&txGid=9b5c9ed60f10259905480700cff88894

UR - https://elibrary.ru/item.asp?id=66741512

U2 - 10.1103/PhysRevLett.132.151901

DO - 10.1103/PhysRevLett.132.151901

M3 - Article

C2 - 38682972

VL - 132

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 15

M1 - 151901

ER -

ID: 62677020