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Measurement of the branching ratios ψ′ → e+e -, ψ′ → J/ψππ, and ψ′ → J/ψη

  • M. Andreotti
  • , S. Bagnasco
  • , W. Baldini
  • , D. Bettoni
  • , G. Borreani
  • , A. Buzzo
  • , R. Calabrese
  • , R. Cester
  • , G. Cibinetto
  • , P. Dalpiaz
  • , G. Garzoglio
  • , K. E. Gollwitzer
  • , M. Graham
  • , M. Hu
  • , D. Joffe
  • , J. Kasper
  • , G. Lasio
  • , M. Lo Vetere
  • , E. Luppi
  • , M. Macrì
  • M. Mandelkern, F. Marchetto, M. Marinelli, E. Menichetti, Z. Metreveli, R. Mussa, M. Negrini, M. M. Obertino, M. Pallavicini, N. Pastrone, C. Patrignani, T. K. Pedlar, S. Pordes, E. Robutti, W. Roethel, J. L. Rosen, P. Rumerio, R. Rusack, A. Santroni, J. Schultz, S. H. Seo, K. K. Seth, G. Stancari, M. Stancari, A. Tomaradze, I. Uman, T. Vidnovic, S. Werkema, P. Zweber

Research output: Contribution to journalArticlepeer-review

Abstract

We have measured several branching ratios for ψ′ decay using the data collected by the FNAL E835 experiment during the year 2000, obtaining B(ψ′ → e+e-) = 0.0068 ± 0.0001 ± 0.0004, B(ψ′ → J/ψπ+π-) = 0.292 ± 0.005 ± 0.018, B(ψ′ → J/ψπ0π0) = 0.167 ± 0.005 ± 0.014, and B(ψ′ → J/ψη) = 0.028 ± 0.002 ± 0.002. We also present a measurement of the dipion mass distribution in the decays ψ′ → J/ψππ.

Original languageEnglish (US)
Article number032006
Pages (from-to)032006-1-032006-7
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume71
Issue number3
DOIs
StatePublished - Feb 2005

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