We present measurements of CP-violating asymmetries in the decay B0 -> a_1(1260)^{+-} pi^{-+} with a_1(1260)^{+-} -> pi^{-+} pi^{+-} pi^{+-}. The data sample corresponds to 384 million B B-bar pairs collected with the BaBar detector at the PEP-II asymmetric B-factory at SLAC. We measure the CP-violating asymmetry A^{a1pi}_{CP}=-0.07+-0.07+-0.02, the mixing-induced CP violation parameter S_{a1pi}= 0.37 +-0.21+-0.07, the direct CP violation parameter C_{a1pi}=-0.10+-0.15+-0.09, and the parameters DeltaC_{a1pi}=0.26+-0.15+-0.07 and DeltaS_{a1pi}=-0.14+-0.21+-0.06. From these measured quantities we exstract the angle alpha_{eff}= 78.6^{0} +- 7.3^{0}.

Measurements of CP-violating asymmetries in B0 ---> a(1)+-(1260) pi-+ decays / F. Palombo. ((Intervento presentato al 4. convegno International workshop on the CKM unitary triangle tenutosi a Nagoya (Japan) nel 2006.

Measurements of CP-violating asymmetries in B0 ---> a(1)+-(1260) pi-+ decays

F. Palombo
Primo
2006

Abstract

We present measurements of CP-violating asymmetries in the decay B0 -> a_1(1260)^{+-} pi^{-+} with a_1(1260)^{+-} -> pi^{-+} pi^{+-} pi^{+-}. The data sample corresponds to 384 million B B-bar pairs collected with the BaBar detector at the PEP-II asymmetric B-factory at SLAC. We measure the CP-violating asymmetry A^{a1pi}_{CP}=-0.07+-0.07+-0.02, the mixing-induced CP violation parameter S_{a1pi}= 0.37 +-0.21+-0.07, the direct CP violation parameter C_{a1pi}=-0.10+-0.15+-0.09, and the parameters DeltaC_{a1pi}=0.26+-0.15+-0.07 and DeltaS_{a1pi}=-0.14+-0.21+-0.06. From these measured quantities we exstract the angle alpha_{eff}= 78.6^{0} +- 7.3^{0}.
dic-2006
Settore FIS/04 - Fisica Nucleare e Subnucleare
http://arxiv.org/abs/hep-ex/0703005
Measurements of CP-violating asymmetries in B0 ---> a(1)+-(1260) pi-+ decays / F. Palombo. ((Intervento presentato al 4. convegno International workshop on the CKM unitary triangle tenutosi a Nagoya (Japan) nel 2006.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/205840
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