Observation of Radiative B Meson Decays into Higher Kaonic Resonances
| dc.creator | Abe, K. | |
| dc.date | 2001-07-24 | |
| dc.date.accessioned | 2026-07-07T06:28:43Z | |
| dc.date.available | 2026-07-07T06:28:43Z | |
| dc.description | We have studied radiative B meson decays into higher kaonic resonances decaying into a two-body or three-body final state, using a data sample of 21.3 fb$^{-1}$ recorded at the $Υ(4S)$ resonance with the Belle detector at KEKB. For the two-body final state, we extract the $B \to K_2^{*}(1430)^0 γ$ component from an analysis of the helicity angle distribution, and obtain ${\cal B}(B^0 \to K_2^{*}(1430)^0 γ) = (1.26\pm 0.66\pm 0.10)\times 10^{-5}$. For the three-body final state, we observe a $B \to Kππγ$ signal that is consistent with a mixture of $B \to K^* πγ$ and $B \to K ργ$. This is the first time that $B \to K^* πγ$ and $B \to K ργ$ have been observed separately. We find their branching fractions to be ${\cal B}(B \to K^* πγ; M_{K^*π}<2.0 GeV/c^2) = (5.6\pm 1.1\pm 0.9)\times 10^{-5}$ and ${\cal B}(B \to K ργ; M_{Kρ} < 2.0 GeV/c^2) = (6.5\pm 1.7^{+1.1}_{1.2})\times 10^{-5}$, respectively. | |
| dc.description | Paper submitted to the 2001 Lepton Photon Conference | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0107065 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0107065 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/97790 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Observation of Radiative B Meson Decays into Higher Kaonic Resonances | |
| dc.type | text |