Observation and study of the decay J /ψ →φηη′

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Observation and study of the decay J /ψ →φηη′. / BESIII Collaboration.

In: Physical Review D, Vol. 99, No. 11, 112008, 18.06.2019.

Research output: Contribution to journal › Article › peer-review

Harvard

BESIII Collaboration 2019, 'Observation and study of the decay J /ψ →φηη′', Physical Review D, vol. 99, no. 11, 112008. https://doi.org/10.1103/PhysRevD.99.112008

APA

BESIII Collaboration (2019). Observation and study of the decay J /ψ →φηη′. Physical Review D, 99(11), [112008]. https://doi.org/10.1103/PhysRevD.99.112008

Vancouver

BESIII Collaboration. Observation and study of the decay J /ψ →φηη′. Physical Review D. 2019 Jun 18;99(11):112008. doi: 10.1103/PhysRevD.99.112008

Author

BESIII Collaboration. / Observation and study of the decay J /ψ →φηη′. In: Physical Review D. 2019 ; Vol. 99, No. 11.

BibTeX

@article{bebfc46897654ef78c9ec29d5b438f87,

title = "Observation and study of the decay J /ψ →φηη′",

abstract = "We report the observation and study of the decay J/ψ→φηη′ using 1.3×109 J/ψ events collected with the BESIII detector. Its branching fraction, including all possible intermediate states, is measured to be (2.32±0.06±0.16)×10-4. We also report evidence for a structure, denoted as X, in the φη′ mass spectrum in the 2.0-2.1 GeV/c2 region. Using two decay modes of the η′ meson (γπ+π- and ηπ+π-), a simultaneous fit to the φη′ mass spectra is performed. Assuming the quantum numbers of the X to be JP=1-, its significance is found to be 4.4σ, with a mass and width of (2002.1±27.5±21.4) MeV/c2 and (129±17±9) MeV, respectively, and a product branching fraction B(J/ψ→ηX)×B(X→φη′)=(9.8±1.2±1.7)×10-5. Alternatively, assuming JP=1+, the significance is 3.8σ, with a mass and width of (2062.8±13.1±7.2) MeV/c2 and (177±36±35) MeV, respectively, and a product branching fraction B(J/ψ→ηX)×B(X→φη′)=(9.6±1.4±2.0)×10-5. The angular distribution of J/ψ→ηX is studied and the two JP assumptions of the X cannot be clearly distinguished due to the limited statistics. In all measurements the first uncertainties are statistical and the second systematic.",

keywords = "CHIRAL DYNAMICS",

author = "{BESIII Collaboration} and M. Ablikim and Achasov, {M. N.} and S. Ahmed and M. Albrecht and M. Alekseev and A. Amoroso and An, {F. F.} and Q. An and Bai, {J. Z.} and Y. Bai and O. Bakina and {Baldini Ferroli}, R. and Y. Ban and K. Begzsuren and Bennett, {D. W.} and Bennett, {J. V.} and N. Berger and M. Bertani and D. Bettoni 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 J. Chai and Chang, {J. F.} and G. Chelkov and G. Chen and Chen, {H. S.} and Chen, {J. C.} and Chen, {M. L.} and Chen, {P. L.} and Chen, {S. J.} and Chen, {X. R.} and Chen, {Y. B.} and W. Cheng and Chu, {X. K.} and G. Cibinetto and F. Cossio and Dai, {H. L.} and Dai, {J. P.} and A. Dbeyssi and D. Dedovich and Muchnoi, {N. Yu} and Nikolaev, {I. B.}",

note = "Publisher Copyright: {\textcopyright} 2019 authors. Published by the American Physical Society.",

year = "2019",

month = jun,

day = "18",

doi = "10.1103/PhysRevD.99.112008",

language = "English",

volume = "99",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "AMER PHYSICAL SOC",

number = "11",

}

RIS

TY - JOUR

T1 - Observation and study of the decay J /ψ →φηη′

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Alekseev, M.

AU - Amoroso, A.

AU - An, F. F.

AU - An, Q.

AU - Bai, J. Z.

AU - Bai, Y.

AU - Bakina, O.

AU - Baldini Ferroli, R.

AU - Ban, Y.

AU - Begzsuren, K.

AU - Bennett, D. W.

AU - Bennett, J. V.

AU - Berger, N.

AU - Bertani, M.

AU - Bettoni, D.

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 - Chai, J.

AU - Chang, J. F.

AU - Chelkov, G.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, J. C.

AU - Chen, M. L.

AU - Chen, P. L.

AU - Chen, S. J.

AU - Chen, X. R.

AU - Chen, Y. B.

AU - Cheng, W.

AU - Chu, X. K.

AU - Cibinetto, G.

AU - Cossio, F.

AU - Dai, H. L.

AU - Dai, J. P.

AU - Dbeyssi, A.

AU - Dedovich, D.

AU - Muchnoi, N. Yu

AU - Nikolaev, I. B.

PY - 2019/6/18

Y1 - 2019/6/18

N2 - We report the observation and study of the decay J/ψ→φηη′ using 1.3×109 J/ψ events collected with the BESIII detector. Its branching fraction, including all possible intermediate states, is measured to be (2.32±0.06±0.16)×10-4. We also report evidence for a structure, denoted as X, in the φη′ mass spectrum in the 2.0-2.1 GeV/c2 region. Using two decay modes of the η′ meson (γπ+π- and ηπ+π-), a simultaneous fit to the φη′ mass spectra is performed. Assuming the quantum numbers of the X to be JP=1-, its significance is found to be 4.4σ, with a mass and width of (2002.1±27.5±21.4) MeV/c2 and (129±17±9) MeV, respectively, and a product branching fraction B(J/ψ→ηX)×B(X→φη′)=(9.8±1.2±1.7)×10-5. Alternatively, assuming JP=1+, the significance is 3.8σ, with a mass and width of (2062.8±13.1±7.2) MeV/c2 and (177±36±35) MeV, respectively, and a product branching fraction B(J/ψ→ηX)×B(X→φη′)=(9.6±1.4±2.0)×10-5. The angular distribution of J/ψ→ηX is studied and the two JP assumptions of the X cannot be clearly distinguished due to the limited statistics. In all measurements the first uncertainties are statistical and the second systematic.

AB - We report the observation and study of the decay J/ψ→φηη′ using 1.3×109 J/ψ events collected with the BESIII detector. Its branching fraction, including all possible intermediate states, is measured to be (2.32±0.06±0.16)×10-4. We also report evidence for a structure, denoted as X, in the φη′ mass spectrum in the 2.0-2.1 GeV/c2 region. Using two decay modes of the η′ meson (γπ+π- and ηπ+π-), a simultaneous fit to the φη′ mass spectra is performed. Assuming the quantum numbers of the X to be JP=1-, its significance is found to be 4.4σ, with a mass and width of (2002.1±27.5±21.4) MeV/c2 and (129±17±9) MeV, respectively, and a product branching fraction B(J/ψ→ηX)×B(X→φη′)=(9.8±1.2±1.7)×10-5. Alternatively, assuming JP=1+, the significance is 3.8σ, with a mass and width of (2062.8±13.1±7.2) MeV/c2 and (177±36±35) MeV, respectively, and a product branching fraction B(J/ψ→ηX)×B(X→φη′)=(9.6±1.4±2.0)×10-5. The angular distribution of J/ψ→ηX is studied and the two JP assumptions of the X cannot be clearly distinguished due to the limited statistics. In all measurements the first uncertainties are statistical and the second systematic.

KW - CHIRAL DYNAMICS

UR - http://www.scopus.com/inward/record.url?scp=85071482049&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.99.112008

DO - 10.1103/PhysRevD.99.112008

M3 - Article

AN - SCOPUS:85071482049

VL - 99

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 11

M1 - 112008

ER -

ID: 21468659