- Main
Measurement of the branching fraction and decay rate asymmetry of B-→Dπ+π-π0K-
- Aubert, B;
- Barate, R;
- Boutigny, D;
- Couderc, F;
- Karyotakis, Y;
- Lees, JP;
- Poireau, V;
- Tisserand, V;
- Zghiche, A;
- Grauges, E;
- Palano, A;
- Pappagallo, M;
- Pompili, A;
- Chen, JC;
- Qi, ND;
- Rong, G;
- Wang, P;
- Zhu, YS;
- Eigen, G;
- Ofte, I;
- Stugu, B;
- Abrams, GS;
- Battaglia, M;
- Borgland, AW;
- Breon, AB;
- Brown, DN;
- Button-Shafer, J;
- Cahn, RN;
- Charles, E;
- Day, CT;
- Gill, MS;
- Gritsan, AV;
- Groysman, Y;
- Jacobsen, RG;
- Kadel, RW;
- Kadyk, J;
- Kerth, LT;
- Kolomensky, YG;
- Kukartsev, G;
- Lynch, G;
- Mir, LM;
- Oddone, PJ;
- Orimoto, TJ;
- Pripstein, M;
- Roe, NA;
- Ronan, MT;
- Wenzel, WA;
- Barrett, M;
- Ford, KE;
- Harrison, TJ;
- Hart, AJ;
- Hawkes, CM;
- Morgan, SE;
- Watson, AT;
- Fritsch, M;
- Goetzen, K;
- Held, T;
- Koch, H;
- Lewandowski, B;
- Pelizaeus, M;
- Peters, K;
- Schroeder, T;
- Steinke, M;
- Boyd, JT;
- Burke, JP;
- Chevalier, N;
- Cottingham, WN;
- Kelly, MP;
- Cuhadar-Donszelmann, T;
- Hearty, C;
- Knecht, NS;
- Mattison, TS;
- McKenna, JA;
- Khan, A;
- Kyberd, P;
- Teodorescu, L;
- Blinov, AE;
- Blinov, VE;
- Bukin, AD;
- Druzhinin, VP;
- Golubev, VB;
- Kravchenko, EA;
- Onuchin, AP;
- Serednyakov, SI;
- Skovpen, YI;
- Solodov, EP;
- Yushkov, AN;
- Best, D;
- Bondioli, M;
- Bruinsma, M;
- Chao, M;
- Eschrich, I;
- Kirkby, D;
- Lankford, AJ;
- Mandelkern, M;
- Mommsen, RK;
- Roethel, W;
- Stoker, DP;
- Buchanan, C;
- Hartfiel, BL
- et al.
Abstract
We report the observation of the decay B-→Dπ+π-π0K-, where Dπ+π-π0 indicates a neutral D meson detected in the final state π+π-π0, excluding KS0π0. This doubly Cabibbo-suppressed decay chain can be used to measure the CKM phase γ. Using about 229×106 e+e-→BB̄ events recorded by the BABAR experiment at the PEP-II e+e- storage ring, we measure the branching fraction B(B-→Dπ+π-π0K-)= (5.5±1.0(stat.)±0.7(syst.))×10-6 and the decay rate asymmetry A(B-→Dπ+π-π0K-)=-0.02±0.16(stat.)±0. 03(syst.) for the full decay chain. © 2005 The American Physical Society.
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