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Improved measurements of CP-violating asymmetry amplitudes in B-0 ->pi(+)pi(-) decays
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BABAR Collaboration (Including: UNSPECIFIED). (2005) Improved measurements of CP-violating asymmetry amplitudes in B-0 ->pi(+)pi(-) decays. PHYSICAL REVIEW LETTERS, 95 (15). -. doi:10.1103/PhysRevLett.95.151803 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.95.151803
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).
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Journal or Publication Title: | PHYSICAL REVIEW LETTERS | ||||
Publisher: | AMERICAN PHYSICAL SOC | ||||
ISSN: | 0031-9007 | ||||
Official Date: | 7 October 2005 | ||||
Dates: |
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Volume: | 95 | ||||
Number: | 15 | ||||
Number of Pages: | 7 | ||||
Page Range: | - | ||||
DOI: | 10.1103/PhysRevLett.95.151803 | ||||
Publication Status: | Published |
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