Measurement of B(Y(nS) -> mu+ mu-) at CLEO
| dc.creator | Danko, Istvan | |
| dc.date | 2004-12-22 | |
| dc.date.accessioned | 2026-07-07T03:36:39Z | |
| dc.date.available | 2026-07-07T03:36:39Z | |
| dc.description | The decay branching fractions of the three narrow Upsilon resonances to mu+ mu- have been measured by analyzing about 4.3 1/fb e+e- data collected with the CLEO III detector. The branching fraction B(Y(1S) -> mu+ mu-) = (2.49 +- 0.02 +- 0.07)% is consistent with the current world average but B(Y(2S) -> mu+ mu-) = (2.03 +- 0.03 +- 0.08)% and B(Y(3S) -> mu+ mu-) = (2.39 +- 0.07 +- 0.10)% are significantly larger than prior results. These new muonic branching fractions imply a narrower total decay width for the Y(2S) and Y(3S) resonances and lower other branching fractions that rely on these decays in their determination. | |
| dc.description | Talk presented at the 1st Meeting of the APS Topical Group on Hadronic Physics (Fermilab, Oct 24-26, 2004). LaTeX 4 pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0412064 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0412064 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/37848 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of B(Y(nS) -> mu+ mu-) at CLEO | |
| dc.type | text |