Measurements of J/psi --> p \bar{p}
| dc.creator | Bai, J. Z. | |
| dc.date | 2004-02-25 | |
| dc.date | 2004-05-12 | |
| dc.date.accessioned | 2026-07-07T10:28:24Z | |
| dc.date.available | 2026-07-07T10:28:24Z | |
| dc.description | The process J/ψ--> p \bar{p} is studied using 57.7 X 10^6 J/ψevents collected with the BESII detector at the Beijing Electron Positron Collider. The branching ratio is determined to be Br(J/ψ--> p \bar{p})=(2.26 +- 0.01 +- 0.14) X 10^{-3}, and the angular distribution is well described by \frac{dN}{d cosθ_p}=1+α\cos^2θ_p with α= 0.676 +- 0.036 +- 0.042, where θ_p is the angle between the proton and beam directions. The value of αobtained is in good agreement with the predictions of first-order QCD. | |
| dc.description | 6 pages, 2 figures, RevTex4, Submitted to Phys.Lett.B | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0402034 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0402034 | |
| dc.identifier | Phys.Lett.B591:42-48,2004 | |
| dc.identifier | doi:10.1016/j.physletb.2004.04.022 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177432 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurements of J/psi --> p \bar{p} | |
| dc.type | text |