First observation of a [Formula Presented] state

G. Bonvicini, D. Cinabro, M. Dubrovin, A. Bornheim, E. Lipeles, S. P. Pappas, A. Shapiro, A. J. Weinstein, R. A. Briere, G. P. Chen, T. Ferguson, G. Tatishvili, H. Vogel, M. E. Watkins, N. E. Adam, J. P. Alexander, K. Berkelman, V. Boisvert, D. G. Cassel, J. E. DuboscqK. M. Ecklund, R. Ehrlich, R. S. Galik, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, L. Hsu, C. D. Jones, J. Kandaswamy, D. L. Kreinick, V. E. Kuznetsov, A. Magerkurth, H. Mahlke-Krüger, T. O. Meyer, J. R. Patterson, T. K. Pedlar, D. Peterson, J. Pivarski, D. Riley, J. L. Rosner, A. J. Sadoff, H. Schwarthoff, M. R. Shepherd, W. M. Sun, J. G. Thayer, D. Urner, T. Wilksen, M. Weinberger, S. B. Athar, P. Avery, L. Breva-Newell, V. Potlia, H. Stoeck, J. Yelton, B. I. Eisenstein, G. D. Gollin, I. Karliner, N. Lowrey, P. Naik, C. Sedlack, M. Selen, J. J. Thaler, J. Williams, K. W. Edwards, D. Besson, K. Y. Gao, D. T. Gong, Y. Kubota, S. Z. Li, R. Poling, A. W. Scott, A. Smith, C. J. Stepaniak, J. Urheim, Z. Metreveli, K. K. Seth, A. Tomaradze, P. Zweber, J. Ernst, K. Arms, E. Eckhart, K. K. Gan, C. Gwon, H. Severini, P. Skubic, D. M. Asner, S. A. Dytman, S. Mehrabyan, J. A. Mueller, S. Nam, V. Savinov, G. S. Huang, D. H. Miller, V. Pavlunin, B. Sanghi, E. I. Shibata, I. P.J. Shipsey, G. S. Adams, M. Chasse, J. P. Cummings, I. Danko, J. Napolitano, D. Cronin-Hennessy, C. S. Park, W. Park, J. B. Thayer, E. H. Thorndike, T. E. Coan, Y. S. Gao, F. Liu, R. Stroynowski, M. Artuso, C. Boulahouache, S. Blusk, J. Butt, E. Dambasuren, O. Dorjkhaidav, J. Haynes, N. Menaa, R. Mountain, H. Muramatsu, R. Nandakumar, R. Redjimi, R. Sia, T. Skwarnicki, S. Stone, J. C. Wang, Kevin Zhang, A. H. Mahmood, S. E. Csorna

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

We present the first evidence for the production of [Formula Presented] states in the four-photon cascade, [Formula Presented] [Formula Presented] [Formula Presented] [Formula Presented] followed by the [Formula Presented] annihilation into [Formula Presented] or [Formula Presented] The signal has a significance of 10.2 standard deviations. The measured product branching ratio for these five decays, [Formula Presented] is consistent with the theoretical estimates. The data are dominated by the production of one [Formula Presented] state consistent with the [Formula Presented] assignment. Its mass is determined to be [Formula Presented] MeV, which is consistent with the predictions from potential models and lattice QCD calculations. We also searched for [Formula Presented] [Formula Presented] followed by either [Formula Presented] or [Formula Presented] We find no evidence for such decays and set upper limits on the product branching ratios.

Original languageEnglish (US)
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume70
Issue number3
DOIs
StatePublished - 2004

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'First observation of a [Formula Presented] state'. Together they form a unique fingerprint.

  • Cite this

    Bonvicini, G., Cinabro, D., Dubrovin, M., Bornheim, A., Lipeles, E., Pappas, S. P., Shapiro, A., Weinstein, A. J., Briere, R. A., Chen, G. P., Ferguson, T., Tatishvili, G., Vogel, H., Watkins, M. E., Adam, N. E., Alexander, J. P., Berkelman, K., Boisvert, V., Cassel, D. G., ... Csorna, S. E. (2004). First observation of a [Formula Presented] state. Physical Review D - Particles, Fields, Gravitation and Cosmology, 70(3). https://doi.org/10.1103/PhysRevD.70.032001