Observation of the doubly strange b baryon Omega_b-
| dc.creator | D0 Collaboration | |
| dc.creator | Abazov, V. | |
| dc.date | 2008-08-29 | |
| dc.date | 2008-12-08 | |
| dc.date.accessioned | 2026-07-07T12:15:25Z | |
| dc.date.available | 2026-07-07T12:15:25Z | |
| dc.description | We report the observation of the doubly strange b baryon Omega_b- in the decay channel Omega_b- to J/psi Omega-, with J/psi to mu+ mu- and Omega- to Lambda K-, in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV. Using approximately 1.3 fb$^{-1}$ of data collected with the D0 detector at the Fermilab Tevatron Collider, we observe 17.8 +/- 4.9 (stat) +/- 0.8 (syst) Omega_b- signal events at a mass of 6.165 +/- 0.010 (stat) +/- 0.013(syst.) GeV. The significance of the observed signal is 5.4 sigma, corresponding to a probability of 6.7 x 10^{-8} of it arising from a background fluctuation. | |
| dc.description | v2: As published in Phys. Rev. Letters | |
| dc.identifier | https://arxiv.org/abs/0808.4142 | |
| dc.identifier | http://arxiv.org/abs/0808.4142 | |
| dc.identifier | Phys.Rev.Lett.101:232002,2008 | |
| dc.identifier | doi:10.1103/PhysRevLett.101.232002 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/211491 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Observation of the doubly strange b baryon Omega_b- | |
| dc.type | text |