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

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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.

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 = "{The BESIII Collaboration} and Achasov, {M. N.} and I. Boyko and C. Chen and G. Chen and Chen, {M. L.} and Chen, {S. J.} and Chen, {S. J.} and Chen, {S. J.} and T. Chen and Chen, {Y. Q.} and Chen, {Y. Q.} and Du, {S. X.} and Duan, {Z. H.} and Fan, {Y. L.} and Fan, {Y. L.} and Fu, {C. D.} and Gao, {Y. N.} and Gu, {Y. T.} and A. Guskov and C. Li and C. Li and C. Li and Li, {D. M.} and F. Li and Li, {H. J.} and Li, {H. J.} and Li, {H. J.} and Li, {H. J.} and Li, {K. L.} and Li, {L. J.} and Li, {L. J.} and Li, {M. H.} and Li, {P. R.} and Li, {S. X.} and T. Li and Li, {Y. G.} and Li, {Z. X.} and Li, {Z. X.} and Lin, {D. X.} and T. Lin and Lyu, {Y. F.} and Ma, {L. L.} and Ma, {Y. M.} and Ma, {Y. M.} and Nikolaev, {I. B.} and Y. Pan and Shi, {B. A.} and Su, {Y. J.} and K. Sun and L. Sun and Sun, {S. S.} and T. Sun and Sun, {Y. J.} and Sun, {Y. J.} and Sun, {Y. J.} and Sun, {Z. T.} and Y. Tian and Wang, {H. P.} and Wang, {H. P.} and Wang, {L. L.} and Xu, {Z. P.} and Xu, {Z. P.} and F. Yan and Yuan, {C. Z.} and Yuan, {S. C.} and Zhang, {J. L.} and Zhang, {J. L.} and Zhang, {J. L.} and Zhang, {J. L.} and Zhang, {J. L.} and Zhang, {J. L.} and Zhang, {J. L.} and Zhang, {J. L.} and Zhang, {Y. H.} and Zhang, {Y. H.} and Zhang, {Y. H.} and Zhang, {Y. H.} and Zhao, {Y. X.} and Zhao, {Y. X.} and Zhu, {Z. A.}",

year = "2024",

month = apr,

day = "12",

doi = "10.1103/PhysRevLett.132.151901",

language = "русский",

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 - The BESIII Collaboration

AU - Achasov, M. N.

AU - Boyko, I.

AU - Chen, C.

AU - Chen, G.

AU - Chen, M. L.

AU - Chen, S. J.

AU - Chen, T.

AU - Chen, Y. Q.

AU - Du, S. X.

AU - Duan, Z. H.

AU - Fan, Y. L.

AU - Fu, C. D.

AU - Gao, Y. N.

AU - Gu, Y. T.

AU - Guskov, A.

AU - Li, C.

AU - Li, D. M.

AU - Li, F.

AU - Li, H. J.

AU - Li, K. L.

AU - Li, L. J.

AU - Li, M. H.

AU - Li, P. R.

AU - Li, S. X.

AU - Li, T.

AU - Li, Y. G.

AU - Li, Z. X.

AU - Lin, D. X.

AU - Lin, T.

AU - Lyu, Y. F.

AU - Ma, L. L.

AU - Ma, Y. M.

AU - Nikolaev, I. B.

AU - Pan, Y.

AU - Shi, B. A.

AU - Su, Y. J.

AU - Sun, K.

AU - Sun, L.

AU - Sun, S. S.

AU - Sun, T.

AU - Sun, Y. J.

AU - Sun, Z. T.

AU - Tian, Y.

AU - Wang, H. P.

AU - Wang, L. L.

AU - Xu, Z. P.

AU - Yan, F.

AU - Yuan, C. Z.

AU - Yuan, S. C.

AU - Zhang, J. L.

AU - Zhang, Y. H.

AU - Zhao, Y. X.

AU - Zhu, Z. A.

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

U2 - 10.1103/PhysRevLett.132.151901

DO - 10.1103/PhysRevLett.132.151901

M3 - статья

C2 - 38682972

VL - 132

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 15

M1 - 151901

ER -

ID: 62677020