Measurement of B- -> tau- nu_tau-bar Decay With a Semileptonic Tagging Method
| dc.creator | The Belle Collaboration | |
| dc.creator | Adachi, I. | |
| dc.date | 2008-09-23 | |
| dc.date.accessioned | 2026-07-07T10:04:37Z | |
| dc.date.available | 2026-07-07T10:04:37Z | |
| dc.description | We present a new measurement of the decay B- -> tau- nu_tau-bar with a semileptonic B tagging method, using a data sample containing 657*10^6 BB-bar pairs collected at the (4S) resonance with the Belle detector at the KEKB asymmetric e+e- collider. A sample of BB pairs are tagged by reconstructing one B meson decaying semileptonically. We detect the B- -> tau- nu_tau-bar candidate in the recoil. We obtain a signal with a signicance of 3.8 standard deviations including systematics, and measure the branching fraction to be B(B- -> tau- nu_tau-bar)=(1.65+0.38-0.37(stat)+0.35-0.37(syst))*10^4. This result confirms the evidence for B- -> tau- nu_tau-bartained in the previous Belle measurement with a hadronic B tagging method. | |
| dc.description | 10 pages, 2 figures, Contributed to the 34th International Conference On High Energy Physics (ICHEP 2008) | |
| dc.identifier | https://arxiv.org/abs/0809.3834 | |
| dc.identifier | http://arxiv.org/abs/0809.3834 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/169740 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of B- -> tau- nu_tau-bar Decay With a Semileptonic Tagging Method | |
| dc.type | text |