Observation and spin-parity determination of the X(1835) in J/ψ → γK0                      SK0                      Sη

BESIII Collaboration

doi:10.1103/PhysRevLett.115.091803

Observation and spin-parity determination of the X(1835) in J/ψ → γK⁰ _SK⁰ _Sη

BESIII Collaboration

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

We report an observation of the process J/ψ → γX(1835) → γK⁰ _SK⁰ _Sη at low K⁰ _SK⁰ _S mass with a statistical significance larger than 12.9σ using a data sample of 1.31 × 10⁹ J/ψ events collected with the BESIII detector. In this region of phase space the K⁰ _SK⁰ _S system is dominantly produced through the f₀(980). By performing a partial wave analysis, we determine the spin parity of the X(1835) to be J^PC = 0⁻⁺. The mass and width of the observed X(1835) are 1844 ± 9(stat)⁺¹⁶ ⁻²⁵ (syst) MeV/c² and 192⁺²⁰ ⁻¹⁷ (stat)⁺⁶² ⁻⁴³ (syst) MeV, respectively, which are consistent with the results obtained by BESIII in the channel J/ψ → γπ⁺π⁻η'.

Lingua originale	Inglese
Numero di articolo	091803
pagine (da-a)	091803-1-091803-7
Rivista	Physical Review Letters
Volume	115
Numero di pubblicazione	9
DOI	https://doi.org/10.1103/PhysRevLett.115.091803
Stato di pubblicazione	Pubblicato - 2015
Pubblicato esternamente	Sì

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10.1103/PhysRevLett.115.091803

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@article{ce537dd415774c63bca7eea6e36aadf2,

title = "Observation and spin-parity determination of the X(1835) in J/ψ → γK0 SK0 Sη",

abstract = "We report an observation of the process J/ψ → γX(1835) → γK0 SK0 Sη at low K0 SK0 S mass with a statistical significance larger than 12.9σ using a data sample of 1.31 × 109 J/ψ events collected with the BESIII detector. In this region of phase space the K0 SK0 S system is dominantly produced through the f0(980). By performing a partial wave analysis, we determine the spin parity of the X(1835) to be JPC = 0−+. The mass and width of the observed X(1835) are 1844 ± 9(stat)+16 −25 (syst) MeV/c2 and 192+20 −17 (stat)+62 −43 (syst) MeV, respectively, which are consistent with the results obtained by BESIII in the channel J/ψ → γπ+π−η'.",

author = "\{BESIII Collaboration\} and M. Ablikim and Achasov, \{M. N.\} and Ai, \{X. C.\} and O. Albayrak and M. Albrecht and Ambrose, \{D. J.\} and A. Amoroso and An, \{F. F.\} and Q. An and Bai, \{J. Z.\} and \{Baldini Ferroli\}, R. and Y. Ban and Bennett, \{D. W.\} and Bennett, \{J. V.\} and M. Bertani and D. Bettoni and Bian, \{J. M.\} and F. Bianchi and E. Boger and I. Boyko and Briere, \{R. A.\} and H. Cai and X. Cai and O. Cakir and A. Calcaterra and Cao, \{G. F.\} and Cetin, \{S. A.\} and Chang, \{J. F.\} and G. Chelkov and G. Chen and Chen, \{H. S.\} and Chen, \{H. Y.\} and Chen, \{J. C.\} and Chen, \{M. L.\} and Chen, \{S. J.\} and X. Chen and Chen, \{X. R.\} and Chen, \{Y. B.\} and Cheng, \{H. P.\} and Chu, \{X. K.\} and G. Cibinetto and Dai, \{H. L.\} and Dai, \{J. P.\} and A. Dbeyssi and D. Dedovich and Deng, \{Z. Y.\} and A. Denig and I. Denysenko and M. Destefanis and \{De Mori\}, F.",

note = "Publisher Copyright: {\textcopyright} 2015 American Physical Society.",

year = "2015",

doi = "10.1103/PhysRevLett.115.091803",

language = "English",

volume = "115",

pages = "091803--1--091803--7",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "9",

}

TY - JOUR

T1 - Observation and spin-parity determination of the X(1835) in J/ψ → γK0 SK0 Sη

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Ai, X. C.

AU - Albayrak, O.

AU - Albrecht, M.

AU - Ambrose, D. J.

AU - Amoroso, A.

AU - An, F. F.

AU - An, Q.

AU - Bai, J. Z.

AU - Baldini Ferroli, R.

AU - Ban, Y.

AU - Bennett, D. W.

AU - Bennett, J. V.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bian, J. M.

AU - Bianchi, F.

AU - Boger, E.

AU - Boyko, I.

AU - Briere, R. A.

AU - Cai, H.

AU - Cai, X.

AU - Cakir, O.

AU - Calcaterra, A.

AU - Cao, G. F.

AU - Cetin, S. A.

AU - Chang, J. F.

AU - Chelkov, G.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, H. Y.

AU - Chen, J. C.

AU - Chen, M. L.

AU - Chen, S. J.

AU - Chen, X.

AU - Chen, X. R.

AU - Chen, Y. B.

AU - Cheng, H. P.

AU - Chu, X. K.

AU - Cibinetto, G.

AU - Dai, H. L.

AU - Dai, J. P.

AU - Dbeyssi, A.

AU - Dedovich, D.

AU - Deng, Z. Y.

AU - Denig, A.

AU - Denysenko, I.

AU - Destefanis, M.

AU - De Mori, F.

PY - 2015

Y1 - 2015

N2 - We report an observation of the process J/ψ → γX(1835) → γK0 SK0 Sη at low K0 SK0 S mass with a statistical significance larger than 12.9σ using a data sample of 1.31 × 109 J/ψ events collected with the BESIII detector. In this region of phase space the K0 SK0 S system is dominantly produced through the f0(980). By performing a partial wave analysis, we determine the spin parity of the X(1835) to be JPC = 0−+. The mass and width of the observed X(1835) are 1844 ± 9(stat)+16 −25 (syst) MeV/c2 and 192+20 −17 (stat)+62 −43 (syst) MeV, respectively, which are consistent with the results obtained by BESIII in the channel J/ψ → γπ+π−η'.

AB - We report an observation of the process J/ψ → γX(1835) → γK0 SK0 Sη at low K0 SK0 S mass with a statistical significance larger than 12.9σ using a data sample of 1.31 × 109 J/ψ events collected with the BESIII detector. In this region of phase space the K0 SK0 S system is dominantly produced through the f0(980). By performing a partial wave analysis, we determine the spin parity of the X(1835) to be JPC = 0−+. The mass and width of the observed X(1835) are 1844 ± 9(stat)+16 −25 (syst) MeV/c2 and 192+20 −17 (stat)+62 −43 (syst) MeV, respectively, which are consistent with the results obtained by BESIII in the channel J/ψ → γπ+π−η'.

UR - https://www.scopus.com/pages/publications/84940675898

U2 - 10.1103/PhysRevLett.115.091803

DO - 10.1103/PhysRevLett.115.091803

M3 - Article

SN - 0031-9007

VL - 115

SP - 091803-1-091803-7

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

M1 - 091803

ER -

Observation and spin-parity determination of the X(1835) in J/ψ → γK0 SK0 Sη

Abstract

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Observation and spin-parity determination of the X(1835) in J/ψ → γK⁰ _SK⁰ _Sη