Study of J /ψ →ηφπ+π- at BESIII

BESIII Collaboration

doi:10.1103/PhysRevD.91.052017

Study of J /ψ →ηφπ+π- at BESIII

BESIII Collaboration

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

Abstract

Based on a sample of 2.25×108J/ψ events taken with the BESIII detector at the BEPCII collider, we present the results of a study of the decay J/ψ→ηφπ+π-. The Y(2175) resonance is observed in the invariant mass spectrum of φf0(980) with a statistical significance of greater than 10σ. The corresponding mass and width are determined to be M=2200±6(stat)±5(syst) MeV/c2 and Γ=104±15(stat)±15(syst) MeV, respectively, and the product branching fraction is measured to be B(J/ψ→ηY(2175),Y(2175)→φf0(980),f0(980)→π+π-)=(1.20±0.14(stat)±0.37(syst))×10-4. The results are consistent within errors with those of previous experiments. We also measure the branching fraction of J/ψ→φf1(1285) with f1(1285)→ηπ+π- and set upper limits on the branching fractions for J/ψ→φη(1405)/φX(1835)/φX(1870) with η(1405)/X(1835)/X(1870)→ηπ+π- at the 90% confidence level.

Lingua originale	Inglese
Numero di articolo	052017
Rivista	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	91
Numero di pubblicazione	5
DOI	https://doi.org/10.1103/PhysRevD.91.052017
Stato di pubblicazione	Pubblicato - 20 mar 2015
Pubblicato esternamente	Sì

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10.1103/PhysRevD.91.052017

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@article{bdab1cb5cd874f59a2f4dccc21bf117e,

title = "Study of J /ψ →ηφπ+π- at BESIII",

abstract = "Based on a sample of 2.25×108J/ψ events taken with the BESIII detector at the BEPCII collider, we present the results of a study of the decay J/ψ→ηφπ+π-. The Y(2175) resonance is observed in the invariant mass spectrum of φf0(980) with a statistical significance of greater than 10σ. The corresponding mass and width are determined to be M=2200±6(stat)±5(syst) MeV/c2 and Γ=104±15(stat)±15(syst) MeV, respectively, and the product branching fraction is measured to be B(J/ψ→ηY(2175),Y(2175)→φf0(980),f0(980)→π+π-)=(1.20±0.14(stat)±0.37(syst))×10-4. The results are consistent within errors with those of previous experiments. We also measure the branching fraction of J/ψ→φf1(1285) with f1(1285)→ηπ+π- and set upper limits on the branching fractions for J/ψ→φη(1405)/φX(1835)/φX(1870) with η(1405)/X(1835)/X(1870)→ηπ+π- at the 90% confidence level.",

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 O. Bondarenko 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 D. Cronin-Hennessy and Dai, {H. L.} and Dai, {J. P.} and A. Dbeyssi and D. Dedovich and Deng, {Z. Y.} and A. Denig and I. Denysenko",

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

year = "2015",

month = mar,

day = "20",

doi = "10.1103/PhysRevD.91.052017",

language = "English",

volume = "91",

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

issn = "1550-7998",

number = "5",

}

TY - JOUR

T1 - Study of J /ψ →ηφπ+π- at BESIII

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 - Bondarenko, O.

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 - Cronin-Hennessy, D.

AU - Dai, H. L.

AU - Dai, J. P.

AU - Dbeyssi, A.

AU - Dedovich, D.

AU - Deng, Z. Y.

AU - Denig, A.

AU - Denysenko, I.

PY - 2015/3/20

Y1 - 2015/3/20

N2 - Based on a sample of 2.25×108J/ψ events taken with the BESIII detector at the BEPCII collider, we present the results of a study of the decay J/ψ→ηφπ+π-. The Y(2175) resonance is observed in the invariant mass spectrum of φf0(980) with a statistical significance of greater than 10σ. The corresponding mass and width are determined to be M=2200±6(stat)±5(syst) MeV/c2 and Γ=104±15(stat)±15(syst) MeV, respectively, and the product branching fraction is measured to be B(J/ψ→ηY(2175),Y(2175)→φf0(980),f0(980)→π+π-)=(1.20±0.14(stat)±0.37(syst))×10-4. The results are consistent within errors with those of previous experiments. We also measure the branching fraction of J/ψ→φf1(1285) with f1(1285)→ηπ+π- and set upper limits on the branching fractions for J/ψ→φη(1405)/φX(1835)/φX(1870) with η(1405)/X(1835)/X(1870)→ηπ+π- at the 90% confidence level.

AB - Based on a sample of 2.25×108J/ψ events taken with the BESIII detector at the BEPCII collider, we present the results of a study of the decay J/ψ→ηφπ+π-. The Y(2175) resonance is observed in the invariant mass spectrum of φf0(980) with a statistical significance of greater than 10σ. The corresponding mass and width are determined to be M=2200±6(stat)±5(syst) MeV/c2 and Γ=104±15(stat)±15(syst) MeV, respectively, and the product branching fraction is measured to be B(J/ψ→ηY(2175),Y(2175)→φf0(980),f0(980)→π+π-)=(1.20±0.14(stat)±0.37(syst))×10-4. The results are consistent within errors with those of previous experiments. We also measure the branching fraction of J/ψ→φf1(1285) with f1(1285)→ηπ+π- and set upper limits on the branching fractions for J/ψ→φη(1405)/φX(1835)/φX(1870) with η(1405)/X(1835)/X(1870)→ηπ+π- at the 90% confidence level.

UR - http://www.scopus.com/inward/record.url?scp=84979831145&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.91.052017

DO - 10.1103/PhysRevD.91.052017

M3 - Article

SN - 1550-7998

VL - 91

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

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

IS - 5

M1 - 052017

ER -

Study of J /ψ →ηφπ+π- at BESIII

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