Krokovny, P;
Abe, K;
Abe, K;
Adachi, I;
Aihara, H;
Anipko, D;
Arinstein, K;
... Belle Collaboration; + view all
(2006)
Measurement of the quark mixing parameter cos2 phi(1) using time-dependent Dalitz analysis of (B)over-bar(0)-> D[K-S(0)pi(+)pi(-)]h(0).
PHYS REV LETT
, 97
(8)
, Article 081801. 10.1103/PhysRevLett.97.081801.
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Abstract
We present a measurement of the angle phi(1) of the Cabibbo-Kobayashi-Maskawa unitarity triangle using a time-dependent Dalitz analysis of D -> K-S(0)pi(+)pi(-) decays produced in neutral B meson decay to a neutral D meson and a light meson ((B) over bar (0)-> D((*))h(0)). The method allows a direct extraction of 2 phi(1) and, therefore, helps to resolve the ambiguity between 2 phi(1) and pi-2 phi(1) in the measurement of sin2 phi(1). We obtain sin2 phi(1)=0.78 +/- 0.44 +/- 0.22 and cos2 phi(1)=1.87(-0.53-0.32)(+0.40+0.22). The sign of cos2 phi(1) is determined to be positive at 98.3% C.L.
| Type: | Article |
|---|---|
| Title: | Measurement of the quark mixing parameter cos2 phi(1) using time-dependent Dalitz analysis of (B)over-bar(0)-> D[K-S(0)pi(+)pi(-)]h(0) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.97.081801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.97.081801 |
| Language: | English |
| Additional information: | © 2006 The American Physical Society |
| Keywords: | CP-VIOLATION, BELLE |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1308518 |
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