Search for the Pentaquark State in $ψ(2S)$ and $J/ψ$ Decays to $K^0_SpK^-\bar n$ and $K^0_S\bar p K^+n$
| dc.creator | BES Collaboration | |
| dc.creator | Bai, J. Z. | |
| dc.date | 2004-02-05 | |
| dc.date.accessioned | 2026-07-07T10:28:23Z | |
| dc.date.available | 2026-07-07T10:28:23Z | |
| dc.description | Results are presented on $ψ(2S)$ and $J/ψ$ hadronic decays to $K^0_SpK^-\bar n$ and $K^0_S\bar p K^+n$ final states from data samples of 14 million $ψ(2S)$ and 58 million $J/ψ$ events accumulated at the BES II detector. No $Θ(1540)$ signal, the pentaquark candidate, is observed, and upper limits for ${\cal B}(ψ(2S)\toΘ\barΘ\to K^0_S p K^-\bar n + K^0_S \bar p K^+ n) < 0.84\times 10^{-5}$ and ${\cal B}(J/ψ\toΘ\barΘ\to K^0_S p K^-\bar n + K^0_S \bar p K^+ n) < 1.1\times 10^{-5}$ at the 90% confidence level are set. For single $Θ(1540)$ production, the upper limits determined by our analysis are also on the order of $10^{-5}$ in both $ψ(2S)$ and $J/ψ$ decays. | |
| dc.description | 13 pages, 6 figures, 2 tables | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0402012 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0402012 | |
| dc.identifier | Phys.Rev.D70:012004,2004 | |
| dc.identifier | doi:10.1103/PhysRevD.70.012004 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177430 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Search for the Pentaquark State in $ψ(2S)$ and $J/ψ$ Decays to $K^0_SpK^-\bar n$ and $K^0_S\bar p K^+n$ | |
| dc.type | text |