We present updated measurements of the CP-violating parameters S-pi pi and C-pi pi in B-0->pi(+)pi(-) decays. Using a sample of 227x10(6) Upsilon(4S) -> B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC, we observe 467 +/- 33 signal decays and measure S-pi pi = -0.30 +/- 0.17(stat) +/- 0.03(syst) and C-pi pi = -0.09 +/- 0.15(stat) +/- 0.04(syst).

Improved measurements of CP-violating asymmetry amplitudes in B-0 ->pi(+)pi(-) decays

BIANCHI, Fabrizio;GAMBA, Diego;
2005-01-01

Abstract

We present updated measurements of the CP-violating parameters S-pi pi and C-pi pi in B-0->pi(+)pi(-) decays. Using a sample of 227x10(6) Upsilon(4S) -> B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC, we observe 467 +/- 33 signal decays and measure S-pi pi = -0.30 +/- 0.17(stat) +/- 0.03(syst) and C-pi pi = -0.09 +/- 0.15(stat) +/- 0.04(syst).
2005
95
151803
-
B. Aubert; R. Barate; D. Boutigny; F. Couderc; Y. Karyotakis; J. P. Lees; V. Poireau; V. Tisserand; A. Zghiche; E. Grauges-Pous; A. Palano; A. Pompili...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/47786
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