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Precision measurement of the branching fractions of η′ decays. / BESIII Collaboration.

In: Physical Review Letters, Vol. 122, No. 14, 142002, 09.04.2019.

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

Harvard

BESIII Collaboration 2019, 'Precision measurement of the branching fractions of η′ decays', Physical Review Letters, vol. 122, no. 14, 142002. https://doi.org/10.1103/PhysRevLett.122.142002

APA

BESIII Collaboration (2019). Precision measurement of the branching fractions of η′ decays. Physical Review Letters, 122(14), [142002]. https://doi.org/10.1103/PhysRevLett.122.142002

Vancouver

BESIII Collaboration. Precision measurement of the branching fractions of η′ decays. Physical Review Letters. 2019 Apr 9;122(14):142002. doi: 10.1103/PhysRevLett.122.142002

Author

BESIII Collaboration. / Precision measurement of the branching fractions of η′ decays. In: Physical Review Letters. 2019 ; Vol. 122, No. 14.

BibTeX

@article{8d89a21b1a234f6ba5d532c6f8d06fd3,
title = "Precision measurement of the branching fractions of η′ decays",
abstract = "Based on a sample of (1310.6±7.0)×106J/ψ events collected with the BESIII detector, we present measurements of J/ψ and η′ absolute branching fractions using the process J/ψ→γη′. By analyzing events where the radiative photon converts into an e+e-pair, the branching fraction for J/ψ→γη′ is measured to be (5.27±0.03±0.05)×10-3. The absolute branching fractions of the five dominant decay channels of the η′ are then measured for the first time and are determined to be B(η′→γπ+π-)=(29.90±0.03±0.55)%, B(η′→ηπ+π-)=(41.24±0.08±1.24)%, B(η′→ηπ0π0)=(21.36±0.10±0.92)%, B(η′→γω)=(2.489±0.018±0.074)%, and B(η′→γγ)=(2.331±0.012±0.035)%, where the first uncertainties are statistical and the second systematic.",
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 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 A. Calcaterra and Cao, {G. F.} and Cetin, {S. A.} and J. Chai and Chang, {J. F.} and Chang, {W. L.} 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 Deng, {Z. Y.} and Muchnoi, {N. Yu} and Nikolaev, {I. B.}",
year = "2019",
month = apr,
day = "9",
doi = "10.1103/PhysRevLett.122.142002",
language = "English",
volume = "122",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "14",

}

RIS

TY - JOUR

T1 - Precision measurement of the branching fractions of η′ decays

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, 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 - Calcaterra, A.

AU - Cao, G. F.

AU - Cetin, S. A.

AU - Chai, J.

AU - Chang, J. F.

AU - Chang, W. L.

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 - Deng, Z. Y.

AU - Muchnoi, N. Yu

AU - Nikolaev, I. B.

PY - 2019/4/9

Y1 - 2019/4/9

N2 - Based on a sample of (1310.6±7.0)×106J/ψ events collected with the BESIII detector, we present measurements of J/ψ and η′ absolute branching fractions using the process J/ψ→γη′. By analyzing events where the radiative photon converts into an e+e-pair, the branching fraction for J/ψ→γη′ is measured to be (5.27±0.03±0.05)×10-3. The absolute branching fractions of the five dominant decay channels of the η′ are then measured for the first time and are determined to be B(η′→γπ+π-)=(29.90±0.03±0.55)%, B(η′→ηπ+π-)=(41.24±0.08±1.24)%, B(η′→ηπ0π0)=(21.36±0.10±0.92)%, B(η′→γω)=(2.489±0.018±0.074)%, and B(η′→γγ)=(2.331±0.012±0.035)%, where the first uncertainties are statistical and the second systematic.

AB - Based on a sample of (1310.6±7.0)×106J/ψ events collected with the BESIII detector, we present measurements of J/ψ and η′ absolute branching fractions using the process J/ψ→γη′. By analyzing events where the radiative photon converts into an e+e-pair, the branching fraction for J/ψ→γη′ is measured to be (5.27±0.03±0.05)×10-3. The absolute branching fractions of the five dominant decay channels of the η′ are then measured for the first time and are determined to be B(η′→γπ+π-)=(29.90±0.03±0.55)%, B(η′→ηπ+π-)=(41.24±0.08±1.24)%, B(η′→ηπ0π0)=(21.36±0.10±0.92)%, B(η′→γω)=(2.489±0.018±0.074)%, and B(η′→γγ)=(2.331±0.012±0.035)%, where the first uncertainties are statistical and the second systematic.

UR - http://www.scopus.com/inward/record.url?scp=85064281409&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.122.142002

DO - 10.1103/PhysRevLett.122.142002

M3 - Article

C2 - 31050481

AN - SCOPUS:85064281409

VL - 122

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 14

M1 - 142002

ER -

ID: 19342733