Study of the near-threshold ω mass enhancement in doubly OZI-suppressed J/ψ→γω decays

M. Ablikim; M. N. Achasov; O. Albayrak; D. J. Ambrose; F. F. An; Q. An; J. Z. Bai; Y. Ban; J. Becker; J. V. Bennett; M. Bertani; J. M. Bian; E. Boger; O. Bondarenko; I. Boyko; R. A. Briere; V. Bytev; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin; J. F. Chang; G. Chelkov; G. Chen; H. S. Chen; J. C. Chen; M. L. Chen; S. J. Chen; X. Chen; Y. B. Chen; H. P. Cheng; Y. P. Chu; D. Cronin-Hennessy; H. L. Dai; J. P. Dai; D. Dedovich; Z. Y. Deng; A. Denig; I. Denysenko; M. Destefanis; W. M. Ding; Y. Ding; L. Y. Dong; M. Y. Dong; S. X. Du; J. Fang; S. S. Fang; H. Muramatsu; R. Poling; BESIII Collaboration

doi:10.1103/PhysRevD.87.032008

Study of the near-threshold ω mass enhancement in doubly OZI-suppressed J/ψ→γω decays

M. Ablikim, M. N. Achasov, O. Albayrak, D. J. Ambrose, F. F. An, Q. An, J. Z. Bai, Y. Ban, J. Becker, J. V. Bennett, M. Bertani, J. M. Bian, E. Boger, O. Bondarenko, I. Boyko, R. A. Briere, V. Bytev, X. Cai, O. Cakir, A. CalcaterraG. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J. C. Chen, M. L. Chen, S. J. Chen, X. Chen, Y. B. Chen, H. P. Cheng, Y. P. Chu, D. Cronin-Hennessy, H. L. Dai, J. P. Dai, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, W. M. Ding, Y. Ding, L. Y. Dong, M. Y. Dong, S. X. Du, J. Fang, S. S. Fang, H. Muramatsu, R. Poling, BESIII Collaboration

Physics and Astronomy (Twin Cities)

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Abstract

A 2.25×108 J/ψ event sample accumulated with the BESIII detector is used to study the doubly Okubo-Zweig-Iizuka-suppressed decay modes J/ψ→γω, ω→π⁺π^-π0, →K⁺K^-. A strong deviation (>30σ) from three-body J/ψ→γω phase space is observed near the ω mass threshold that is consistent with a previous observation reported by the BESII experiment. A partial wave analysis with a tensor covariant amplitude that assumes that the enhancement is due to the presence of a resonance, the X(1810), is performed and confirms that the spin-parity of the X(1810) is 0 ⁺⁺. The mass and width of the X(1810) are determined to be M=1795±7(stat)-5+13(syst)±19(mod) MeV/c2 and Γ= 95±10(stat)-34+21(syst)±75(mod) MeV/c2, respectively, and the product branching fraction is measured to be B(J/ψ→γX(1810)) ×B(X(1810)→ω)=(2.00±0.08(stat)-1.00+0.45(syst)±1. 30(mod))×10^-4. These results are consistent within errors with those of the BESII experiment.

Original language	English (US)
Article number	032008
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	87
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.87.032008
State	Published - Feb 22 2013

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© 2013 American Physical Society.

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Ablikim, M., Achasov, M. N., Albayrak, O., Ambrose, D. J., An, F. F., An, Q., Bai, J. Z., Ban, Y., Becker, J., Bennett, J. V., Bertani, M., Bian, J. M., Boger, E., Bondarenko, O., Boyko, I., Briere, R. A., Bytev, V., Cai, X., Cakir, O., ... BESIII Collaboration (2013). Study of the near-threshold ω mass enhancement in doubly OZI-suppressed J/ψ→γω decays. Physical Review D - Particles, Fields, Gravitation and Cosmology, 87(3), Article 032008. https://doi.org/10.1103/PhysRevD.87.032008

Ablikim, M, Achasov, MN, Albayrak, O, Ambrose, DJ, An, FF, An, Q, Bai, JZ, Ban, Y, Becker, J, Bennett, JV, Bertani, M, Bian, JM, Boger, E, Bondarenko, O, Boyko, I, Briere, RA, Bytev, V, Cai, X, Cakir, O, Calcaterra, A, Cao, GF, Cetin, SA, Chang, JF, Chelkov, G, Chen, G, Chen, HS, Chen, JC, Chen, ML, Chen, SJ, Chen, X, Chen, YB, Cheng, HP, Chu, YP, Cronin-Hennessy, D, Dai, HL, Dai, JP, Dedovich, D, Deng, ZY, Denig, A, Denysenko, I, Destefanis, M, Ding, WM, Ding, Y, Dong, LY, Dong, MY, Du, SX, Fang, J, Fang, SS, Muramatsu, H, Poling, R & BESIII Collaboration 2013, 'Study of the near-threshold ω mass enhancement in doubly OZI-suppressed J/ψ→γω decays', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 87, no. 3, 032008. https://doi.org/10.1103/PhysRevD.87.032008

@article{0e659c2e1b344f55a690bc7f304eb456,

title = "Study of the near-threshold ω mass enhancement in doubly OZI-suppressed J/ψ→γω decays",

abstract = "A 2.25×108 J/ψ event sample accumulated with the BESIII detector is used to study the doubly Okubo-Zweig-Iizuka-suppressed decay modes J/ψ→γω, ω→π+π-π0, →K+K-. A strong deviation (>30σ) from three-body J/ψ→γω phase space is observed near the ω mass threshold that is consistent with a previous observation reported by the BESII experiment. A partial wave analysis with a tensor covariant amplitude that assumes that the enhancement is due to the presence of a resonance, the X(1810), is performed and confirms that the spin-parity of the X(1810) is 0 ++. The mass and width of the X(1810) are determined to be M=1795±7(stat)-5+13(syst)±19(mod) MeV/c2 and Γ= 95±10(stat)-34+21(syst)±75(mod) MeV/c2, respectively, and the product branching fraction is measured to be B(J/ψ→γX(1810)) ×B(X(1810)→ω)=(2.00±0.08(stat)-1.00+0.45(syst)±1. 30(mod))×10-4. These results are consistent within errors with those of the BESII experiment.",

author = "M. Ablikim and Achasov, \{M. N.\} and O. Albayrak and Ambrose, \{D. J.\} and An, \{F. F.\} and Q. An and Bai, \{J. Z.\} and Y. Ban and J. Becker and Bennett, \{J. V.\} and M. Bertani and Bian, \{J. M.\} and E. Boger and O. Bondarenko and I. Boyko and Briere, \{R. A.\} and V. Bytev 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, \{J. C.\} and Chen, \{M. L.\} and Chen, \{S. J.\} and X. Chen and Chen, \{Y. B.\} and Cheng, \{H. P.\} and Chu, \{Y. P.\} and D. Cronin-Hennessy and Dai, \{H. L.\} and Dai, \{J. P.\} and D. Dedovich and Deng, \{Z. Y.\} and A. Denig and I. Denysenko and M. Destefanis and Ding, \{W. M.\} and Y. Ding and Dong, \{L. Y.\} and Dong, \{M. Y.\} and Du, \{S. X.\} and J. Fang and Fang, \{S. S.\} and H. Muramatsu and R. Poling and \{BESIII Collaboration\}",

note = "Publisher Copyright: {\textcopyright} 2013 American Physical Society.",

year = "2013",

month = feb,

day = "22",

doi = "10.1103/PhysRevD.87.032008",

language = "English (US)",

volume = "87",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

publisher = "American Physical Society",

number = "3",

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TY - JOUR

T1 - Study of the near-threshold ω mass enhancement in doubly OZI-suppressed J/ψ→γω decays

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Albayrak, O.

AU - Ambrose, D. J.

AU - An, F. F.

AU - An, Q.

AU - Bai, J. Z.

AU - Ban, Y.

AU - Becker, J.

AU - Bennett, J. V.

AU - Bertani, M.

AU - Bian, J. M.

AU - Boger, E.

AU - Bondarenko, O.

AU - Boyko, I.

AU - Briere, R. A.

AU - Bytev, V.

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, J. C.

AU - Chen, M. L.

AU - Chen, S. J.

AU - Chen, X.

AU - Chen, Y. B.

AU - Cheng, H. P.

AU - Chu, Y. P.

AU - Cronin-Hennessy, D.

AU - Dai, H. L.

AU - Dai, J. P.

AU - Dedovich, D.

AU - Deng, Z. Y.

AU - Denig, A.

AU - Denysenko, I.

AU - Destefanis, M.

AU - Ding, W. M.

AU - Ding, Y.

AU - Dong, L. Y.

AU - Dong, M. Y.

AU - Du, S. X.

AU - Fang, J.

AU - Fang, S. S.

AU - Muramatsu, H.

AU - Poling, R.

AU - BESIII Collaboration

PY - 2013/2/22

Y1 - 2013/2/22

N2 - A 2.25×108 J/ψ event sample accumulated with the BESIII detector is used to study the doubly Okubo-Zweig-Iizuka-suppressed decay modes J/ψ→γω, ω→π+π-π0, →K+K-. A strong deviation (>30σ) from three-body J/ψ→γω phase space is observed near the ω mass threshold that is consistent with a previous observation reported by the BESII experiment. A partial wave analysis with a tensor covariant amplitude that assumes that the enhancement is due to the presence of a resonance, the X(1810), is performed and confirms that the spin-parity of the X(1810) is 0 ++. The mass and width of the X(1810) are determined to be M=1795±7(stat)-5+13(syst)±19(mod) MeV/c2 and Γ= 95±10(stat)-34+21(syst)±75(mod) MeV/c2, respectively, and the product branching fraction is measured to be B(J/ψ→γX(1810)) ×B(X(1810)→ω)=(2.00±0.08(stat)-1.00+0.45(syst)±1. 30(mod))×10-4. These results are consistent within errors with those of the BESII experiment.

AB - A 2.25×108 J/ψ event sample accumulated with the BESIII detector is used to study the doubly Okubo-Zweig-Iizuka-suppressed decay modes J/ψ→γω, ω→π+π-π0, →K+K-. A strong deviation (>30σ) from three-body J/ψ→γω phase space is observed near the ω mass threshold that is consistent with a previous observation reported by the BESII experiment. A partial wave analysis with a tensor covariant amplitude that assumes that the enhancement is due to the presence of a resonance, the X(1810), is performed and confirms that the spin-parity of the X(1810) is 0 ++. The mass and width of the X(1810) are determined to be M=1795±7(stat)-5+13(syst)±19(mod) MeV/c2 and Γ= 95±10(stat)-34+21(syst)±75(mod) MeV/c2, respectively, and the product branching fraction is measured to be B(J/ψ→γX(1810)) ×B(X(1810)→ω)=(2.00±0.08(stat)-1.00+0.45(syst)±1. 30(mod))×10-4. These results are consistent within errors with those of the BESII experiment.

UR - https://www.scopus.com/pages/publications/84874546053

UR - https://www.scopus.com/inward/citedby.url?scp=84874546053&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.87.032008

DO - 10.1103/PhysRevD.87.032008

M3 - Article

AN - SCOPUS:84874546053

SN - 1550-7998

VL - 87

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 3

M1 - 032008

ER -

Study of the near-threshold ω mass enhancement in doubly OZI-suppressed J/ψ→γω decays

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