Measurement of sin2beta with BABAR

Technical Report · Tue Oct 28 23:00:00 EST 2003

DOI:https://doi.org/10.2172/826534· OSTI ID:826534

Wright, D ^[1]

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1. SLAC

The authors present updated results on time-dependent CP-violating asymmetries in neutral B decays to several CP eigenstates containing charmonium. In the Standard Model, the amplitude of these asymmetries is proportional to sin 2{beta}. They measure sin2{beta} = 0.741 {+-} 0.067 (stat) {+-} 0.034 (syst) from a data sample of about 88 million {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. The authors have also measured CP-violating asymmetries in open charm, and penguin modes sensitive to sin2{beta}, which provide important consistency tests of the Standard Model.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (US)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 826534
• Report Number(s): SLAC-PUB-10228
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
AMPLITUDES
CHARMONIUM
EIGENSTATES
STANDARD MODEL
STANFORD LINEAR ACCELERATOR CENTER