Report number
| LHCb-CONF-2011-024 ; CERN-LHCb-CONF-2011-024 |
Title
| First observations of the Cabibbo-suppressed decays ˉB0→D+K−π+π−¯B0→D+K−π+π− and B−→D0K−π+π−B−→D0K−π+π− |
Corporate author(s)
| The LHCb Collaboration |
Collaboration
| LHCb Collaboration |
Note
| LHCb-ANA-2011-013 |
Submitted to
| 13th International Conference on B-Physics at Hadron Machines, Amsterdam, Netherlands, 4 - 8 Apr 2011 |
Submitted by
| elodie.beaumont@cern.ch on 12 May 2011 |
Subject category
| Particle Physics - Experiment |
Accelerator/Facility, Experiment
| CERN LHC ; LHCb |
Free keywords
| flavour physics ; B Physics ; Branching fraction ; spectroscopy ; CKM angle gamma |
Abstract
| Using 35 pb−1−1 of data collected in pppp collisions at √s√s = 7 TeV by the LHCb experiment, we report first observations of the Cabibbo-suppressed decays ˉB0→D+K−π+π−¯B0→D+K−π+π− and B−→D0K−π+π−B−→D0K−π+π−, and measure their branching fractions relative to the corresponding Cabibbo-favored modes, ˉB0→D+π−π+π−¯B0→D+π−π+π− and B−→D0π−π+π−B−→D0π−π+π−, respectively. The ratios of branching fractions are: B(ˉB0→D+K−π+π−)B(ˉB0→D+π−π+π−)=(5.2±0.9(stat)±0.5(syst))×10−2B(B−→D0K−π+π−)B(B−→D0π−π+π−)=(9.6±1.5(stat)±0.8(syst))×10−2. Decays such as these will be of use to determine the CKM Unitarity Triangle angle γ. |
Copyright/License
| Preprint: (License: CC-BY-4.0) |
Related document
| Superseded by LHCB-PAPER-2011-040 |