Search for \bar{B}^0\toΛ_c^+\barΛ_c^- decay at Belle
| dc.creator | The Belle Collaboration | |
| dc.creator | Abe, K. | |
| dc.date | 2007-08-08 | |
| dc.date | 2007-10-06 | |
| dc.date.accessioned | 2026-07-07T11:52:54Z | |
| dc.date.available | 2026-07-07T11:52:54Z | |
| dc.description | We search for the doubly charmed baryonic decay $\bar{B}^0\toΛ_c^+\barΛ_c^-$, in a data sample of $520\times10^6$ $B{\bar B}$ events accumulated at the $Υ(4S)$ resonance with the Belle detector at the KEKB asymmetric e^+e^- collider. We find no significant signal and set an upper limit of ${\cal B}(\bar{B}^0\toΛ_c^+\barΛ_c^-)<6.2\times10^{-5}$ at 90% confidence level. The result is significantly below a naive extrapolation from ${\cal B}(B^-\toΞ_c^0\barΛ_c^)$ assuming a simple Cabibbo-suppression factor of $|V_{cd}/V_{cs}|^2$. The small branching fraction could be attributed to a suppression due to the large momentum of the baryonic decay products, which has been observed in other charmed baryonic two-body B decays. trend observed in other charmed baryonic two-body B decays. | |
| dc.description | 12 page, 5 figures. Contribution paper for conferences EPS2007 and Lepton Photon 2007, Belle-Conference-0707 | |
| dc.identifier | https://arxiv.org/abs/0708.1105 | |
| dc.identifier | http://arxiv.org/abs/0708.1105 | |
| dc.identifier | Phys.Rev.D77:051101,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.77.051101 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204347 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Search for \bar{B}^0\toΛ_c^+\barΛ_c^- decay at Belle | |
| dc.type | text |