Measurement of the branching ratios ψ′→e+e-, ψ′→J/ψπ0π0 and ψ′→J/ψη

M. Ambrogiani, S. Bagnasco, W. Baldini, D. Bettoni, G. Borreani, A. Buzzo, R. Calabrese, M. Cardarelli, R. Cester, P. Dalpiaz, I. Dobbs-Dixon, X. Fan, G. Garzoglio, K. Gollwitzer, A. Hahn, S. Jin, J. Kasper, G. Lasio, M. Lo Vetere, E. LuppiP. Maas, M. Macrì, M. Mandelkern, F. Marchetto, M. Marinelli, W. Marsh, M. Martini, E. Menichetti, R. Mussa, M. M. Obertino, M. Pallavicini, N. Pastrone, C. Patrignani, T. K. Pedlar, J. Peoples, S. Pordes, E. Robutti, J. Rosen, P. Rumerio, A. Santroni, M. Savrié, J. Schultz, K. K. Seth, G. Stancari, M. Stancari, J. Streets, A. Tomaradze, S. Werkema, G. Zioulas

Research output: Contribution to journalArticle

Abstract

We have determined the following ψ′ branching ratios using the large event sample collected by Fermilab experiment E835 in the reaction pp̄→ψ′: B(ψ′→e+e-)=(7.4±0.2±0.7) × 10-3, B(ψ′→J/ψπ0π0) = (18.7±0.9±1.3)% and B(ψ′→J/ψη) = (4.1±0.3±0.5)%.

Original languageEnglish (US)
Article number032004
Pages (from-to)1-8
Number of pages8
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume62
Issue number3
StatePublished - Aug 1 2000

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Ambrogiani, M., Bagnasco, S., Baldini, W., Bettoni, D., Borreani, G., Buzzo, A., Calabrese, R., Cardarelli, M., Cester, R., Dalpiaz, P., Dobbs-Dixon, I., Fan, X., Garzoglio, G., Gollwitzer, K., Hahn, A., Jin, S., Kasper, J., Lasio, G., Lo Vetere, M., ... Zioulas, G. (2000). Measurement of the branching ratios ψ′→e+e-, ψ′→J/ψπ0π0 and ψ′→J/ψη. Physical Review D - Particles, Fields, Gravitation and Cosmology, 62(3), 1-8. [032004].