Somov, A;
Schwartz, AJ;
Abe, K;
Abe, K;
Adachi, I;
Aihara, H;
Anipko, D;
... Belle Collaboration; + view all
(2006)
Measurement of the branching fraction, polarization, and CP asymmetry for B-0 ->rho(+)rho(-) decays, and determination of the Cabibbo-Kobayashi-Maskawa phase phi(2).
PHYS REV LETT
, 96
(17)
, Article 171801. 10.1103/PhysRevLett.96.171801.
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Abstract
We have measured the branching fraction B, longitudinal polarization fraction f(L), and CP asymmetry coefficients A and S for B-0->rho(+)rho(-) decays with the Belle detector at the KEKB e(+)e(-) collider using 253 fb(-1) of data. We obtain B=[22.8 +/- 3.8(stat)(-2.6)(+2.3)(syst)]x10(-6), f(L)=0.941(-0.040)(+0.034)(stat)+/- 0.030(syst), A=0.00 +/- 0.30(stat)+/- 0.09(syst), and S=0.08 +/- 0.41(stat)+/- 0.09(syst). These values are used to constrain the Cabibbo-Kobayashi-Maskawa phase phi(2); the solution consistent with the standard model is phi(2)=(88 +/- 17)degrees or 59 degrees <phi 2 < 115 degrees at 90% C.L.
| Type: | Article |
|---|---|
| Title: | Measurement of the branching fraction, polarization, and CP asymmetry for B-0 ->rho(+)rho(-) decays, and determination of the Cabibbo-Kobayashi-Maskawa phase phi(2) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.96.171801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.96.171801 |
| Language: | English |
| Additional information: | © 2006 The American Physical Society |
| Keywords: | VIOLATION, IMPACT, 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/1308504 |
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