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Measurements of CP-violating asymmetries in B0→a1±(1260)π∓ Decays
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(2007) Measurements of CP-violating asymmetries in B0→a1±(1260)π∓ Decays. Physical Review Letters, Vol.98 (No.18). Article: 181803. doi:10.1103/PhysRevLett.98.181803 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.98.181803
Abstract
We present measurements of CP-violating asymmetries in the decay B-0 -> a(1)(+/-)(1260)pi(-/+) with a(1)(+/-)(1260)->pi(-/+)pi(+/-)pi(+/-). The data sample corresponds to 384x10(6) B(b) over bar pairs collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. We measure the CP-violating asymmetry A(CP)(a1 pi)=-0.07 +/- 0.07 +/- 0.02, the mixing-induced CP violation parameter S-a1 pi=0.37 +/- 0.21 +/- 0.07, the direct CP violation parameter C-a1 pi=-0.10 +/- 0.15 +/- 0.09, and the parameters Delta C-a1 pi=0.26 +/- 0.15 +/- 0.07 and Delta S-a1 pi=-0.14 +/- 0.21 +/- 0.06. From these measured quantities we determine the angle alpha(eff)=78.6 degrees +/- 7.3 degrees.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Physical Review Letters | ||||
Publisher: | American Physical Society | ||||
ISSN: | 0031-9007 | ||||
Official Date: | 4 May 2007 | ||||
Dates: |
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Volume: | Vol.98 | ||||
Number: | No.18 | ||||
Number of Pages: | 7 | ||||
Page Range: | Article: 181803 | ||||
DOI: | 10.1103/PhysRevLett.98.181803 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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