J/psi production via initial state radiation in e+ e- --> mu+ mu- gamma at an e+e- center-of-mass energy near 10.6 GeV
| dc.creator | The BABAR Collaboration | |
| dc.creator | Aubert, B. | |
| dc.date | 2003-10-14 | |
| dc.date.accessioned | 2026-07-07T12:02:06Z | |
| dc.date.available | 2026-07-07T12:02:06Z | |
| dc.description | We have used a study of the process e+e- --> mu+ mu- gamma at a center-of-mass energy near the Y(4S) resonance for a mu+ mu- invariant mass range near the J/psi mass to extract the cross section sigma(e+e- --> J/psi gamma --> mu+ mu- gamma). The data set, corresponding to an integrated luminosity of 88.4 fb-1, was collected using the BaBar detector at the PEP-II collider. We measure the product Gamma(J/psi --> e+e-)B(J/psi --> mu+ mu-) to be 0.330 +/- 0.008(stat) +/- 0.007(syst) keV. Using the world averages for B(J/psi --> mu+ mu-) and B(J/psi --> e+e-), we derive the J/psi electronic and total widths: Gamma(J/psi --> e+e-)=5.61+/-0.20 keV and Gamma=94.7+/-4.4 keV. | |
| dc.description | 8 pages, 4 postscript figues, submitted to Phys. Rev. D(Rapid Communications) | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0310027 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0310027 | |
| dc.identifier | Phys.Rev.D69:011103,2004 | |
| dc.identifier | doi:10.1103/PhysRevD.69.011103 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207324 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | J/psi production via initial state radiation in e+ e- --> mu+ mu- gamma at an e+e- center-of-mass energy near 10.6 GeV | |
| dc.type | text |