Measurement of the branching fraction and decay rate asymmetry of B{sup -}{yields}D{sub {pi}{sup +}}{sub {pi}{sup -}}{sub {pi}{sup 0}}K{sup -}

Journal Article · Sat Oct 01 00:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.071102· OSTI ID:20713606

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, J P; Poireau, V; Tisserand, V; Zghiche, A ^[1]; Grauges, E ^[2]; Palano, A; Pappagallo, M; Pompili, A ^[3]; Chen, J; Qi, N D; Rong, G; Wang, P; Zhu, Y S ^[4]; Eigen, G; Ofte, I ^[5]

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1. Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
2. IFAE, Universitat Autonoma de Barcelona, E-08193 Bellaterra, Barcelona (Spain)
3. Universita di Bari, Dipartimento di Fisica and INFN, I-70126 Bari (Italy)
4. Institute of High Energy Physics, Beijing 100039 (China)
5. University of Bergen, Inst. of Physics, N-5007 Bergen (Norway); and others

We report the observation of the decay B{sup -}{yields}D{sub {pi}{sup +}}{sub {pi}{sup -}}{sub {pi}{sup 0}}K{sup -}, where D{sub {pi}{sup +}}{sub {pi}{sup -}}{sub {pi}{sup 0}} indicates a neutral D meson detected in the final state {pi}{sup +}{pi}{sup -}{pi}{sup 0}, excluding K{sub S}{sup 0}{pi}{sup 0}. This doubly Cabibbo-suppressed decay chain can be used to measure the CKM phase {gamma}. Using about 229x10{sup 6} e{sup +}e{sup -}{yields}BB events recorded by the BABAR experiment at the PEP-II e{sup +}e{sup -} storage ring, we measure the branching fraction B(B{sup -}{yields}D{sub {pi}{sup +}}{sub {pi}{sup -}}{sub {pi}{sup 0}}K{sup -})=(5.5{+-}1.0(stat.){+-}0.7(syst.))x10{sup -=} 6 and the decay rate asymmetry A(B{sup -}{yields}D{sub {pi}{sup +}}{sub {pi}{sup -}}{sub {pi}{sup 0}}K{sup -})=-0.02{+-}0.16(stat.){+-}0.03(syst.) for the full decay chain.

• OSTI ID: 20713606
• Journal Information: Physical Review. D, Particles Fields, Vol. 72, Issue 7; Other Information: DOI: 10.1103/PhysRevD.72.071102; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA). BABAR Collaboration; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B MINUS MESONS
BRANCHING RATIO
D NEUTRAL MESONS
ELECTRON-POSITRON INTERACTIONS
HADRONIC PARTICLE DECAY
KAONS MINUS
KAONS NEUTRAL SHORT-LIVED
KOBAYASHI-MASKAWA MATRIX
PARTICLE IDENTIFICATION
PEP STORAGE RINGS
PIONS MINUS
PIONS NEUTRAL
PIONS PLUS