Observation of Two New N* Resonances in the Decay psi(3686) -> p(p)over-bar pi(0)

M. Ablikim*, M. N. Achasov, D. J. Ambrose, F. F. An, Q. An, Z. H. An, J. Z. Bai, Y. Ban, J. Becker, N. Berger, M. Bertani, J. M. Bian, E. Boger, O. Bondarenko, I. Boyko, R. A. Briere, V. Bytev, X. Cai, A. Calcaterra, G. F. CaoJ. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J.C. Chen, M.L. Chen, S. J. Chen, Y. Chen, Y. B. Chen, H. P. Cheng, Y. P. Chu, D. Cronin-Hennessy, H. L. Dai, J.P. Dai, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, W. M. Ding, Y. Ding, L. Y. Dong, M. Y. Dong, S. X. Du, J. Fang, N. Kalantar-Nayestanaki, M. Kavatsyuk, Cheng Liu, H. Loehner, J. G. Messchendorp, BESIII Collaboration

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    37 Citations (Scopus)

    Abstract

    Based on 106 x 10(6)psi(3686) events collected with the BESIII detector at the BEPCII facility, a partial wave analysis of psi(3686) -> p (p) over bar pi(0) is performed. The branching fraction of this channel has been determined to be B psi(3686) -> p (p) over bar pi(0) = (1.65 +/- 0.03 +/- 0.15) x 10(-4). In this decay, 7 N* intermediate resonances are observed. Among these, two new resonances, N(2300) and N(2570) are significant, one 1/2(+) resonance with a mass of 2300(-30-0)(+40+109) MeV/c(2) and width of 340(-30-58)(+30+110) MeV/c(2), and one 5/2(-) resonance with a mass of 2570(-10-10)(+19+34) MeV/c(2) and width of 250(-24-21)(+14+69) MeV/c(.)(2) For the remaining 5 N* intermediate resonances [N(1440), N(1520), N(1535), N(1650) and N(1720)], the analysis yields mass and width values that are consistent with those from established resonances. DOI: 10.1103/PhysRevLett.110.022001

    Original languageEnglish
    Article number022001
    Number of pages7
    JournalPhysical Review Letters
    Volume110
    Issue number2
    DOIs
    Publication statusPublished - 11-Jan-2013

    Keywords

    • PARTIAL-WAVE ANALYSIS
    • BARYONS
    • MODEL

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