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Volumn 58, Issue 9, 1998, Pages 920061-920066

Determination of J/ψ leptonic branching fraction via ψ(2S)→π+π-J/ψ

(181)  Bai, J Z a   Bian, J G a   Blum, I k   Chai, Z W a   Chen, G P a   Chen, H F j   Chen, J c   Chen, J C a   Chen, Y a   Chen, Y B a   Chen, Y Q a   Cheng, B S a   Cui, X Z a   Ding, H L a   Ding, L Y a   Dong, L Y a   Du, Z Z a   Dunwoodie, W g   Feng, S a   Gao, C S a   more..


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EID: 1542785706     PISSN: 05562821     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevD.58.092006     Document Type: Article
Times cited : (34)

References (21)
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    • note
    • recoil distribution is not as clean for these events. We rely on our fitting procedure to extract the signal.
  • 8
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    • note
    • The events represented by the polynomial in Fig. 2(a) are predominantly good events but where the low energy pion underwent π→μν decay. Using only the BWG shape to describe the signal makes us less sensitive to background.
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    • Brown, L.S.1    Cahn, R.N.2
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    • 1542436332 scopus 로고    scopus 로고
    • We have also determined the acceptance allowing the ππ system to have a small amount of D wave. This has negligible effect on the results
    • We have also determined the acceptance allowing the ππ system to have a small amount of D wave. This has negligible effect on the results.
  • 12
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    • F. A. Berends et al., Acta Phys. Pol. B 14, 413 (1983); F. A. Berends and R. Kleiss, Nucl. Phys. B177, 237 (1981).
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    • F. A. Berends et al., Acta Phys. Pol. B 14, 413 (1983); F. A. Berends and R. Kleiss, Nucl. Phys. B177, 237 (1981).
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    • Berends, F.A.1    Kleiss, R.2
  • 14
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    • Χ distribution is used in place of the theoretical distribution in the determination of the acceptances
    • Χ distribution is used in place of the theoretical distribution in the determination of the acceptances.
  • 15
    • 1542541186 scopus 로고    scopus 로고
    • note
    • k the fraction of multiplicity-k events. By solving the overdetermined equations above, we estimate the J/ψ charged-track-multiplicity distribution shown in Table II.
  • 16
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    • R. Baldini-Celio et al., Phys. Lett. 58B, 471 (1975); Min-Zu Wang, Ph.D. thesis, Univ. Iowa, 1993.
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    • Ph.D. thesis, Univ. Iowa
    • R. Baldini-Celio et al., Phys. Lett. 58B, 471 (1975); Min-Zu Wang, Ph.D. thesis, Univ. Iowa, 1993.
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    • note
    • 6 ψ(2S) events.
  • 19
    • 1542436331 scopus 로고    scopus 로고
    • The difference in the branching ratios due to the difference in phase space for the two modes is small compared to the experimental errors
    • The difference in the branching ratios due to the difference in phase space for the two modes is small compared to the experimental errors.


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