Abstract
We present a measurement of the angle 1 of the Cabibbo-Kobayashi-Maskawa unitarity triangle using a time-dependent Dalitz analysis of D→KS0π+π- decays produced in neutral B meson decay to a neutral D meson and a light meson (B̄0→D(*)h0). The method allows a direct extraction of 21 and, therefore, helps to resolve the ambiguity between 21 and π-21 in the measurement of sin21. We obtain sin21=0.78±0.44±0. 22 and cos21=1.87-0.53-0.32+0.40+0.22. The sign of cos21 is determined to be positive at 98.3% C.L.
| Original language | English |
|---|---|
| Article number | 081801 |
| Journal | Physical Review Letters |
| Volume | 97 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 31 Aug 2006 |
| Externally published | Yes |
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