Branching Fraction Measurements of the Decays B-]EtaC K, where EtaC-]K Anti-K K Pi and EtaC-]4K. PDF Download

Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Branching Fraction Measurements of the Decays B-]EtaC K, where EtaC-]K Anti-K K Pi and EtaC-]4K. PDF full book. Access full book title Branching Fraction Measurements of the Decays B-]EtaC K, where EtaC-]K Anti-K K Pi and EtaC-]4K. by . Download full books in PDF and EPUB format.

Branching Fraction Measurements of the Decays B-]EtaC K, where EtaC-]K Anti-K K Pi and EtaC-]4K.

Branching Fraction Measurements of the Decays B-]EtaC K, where EtaC-]K Anti-K K Pi and EtaC-]4K. PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 5

Book Description
In this report, we present the observation of the exclusive decays B° 2![eta]{sub c}K° and B 2![eta]{sub c}K, and the measurement of the related branching fractions. Using a sample of 22.7 x 106 [Upsilon](4S) 2!B{bar B} decays collected with the BABAR detector at the SLAC PEP-II asymmetric B Factory during 1999-2000, we have observed statistically significant signals in the [eta]{sub c} 2!K{sub S}° K{sup ±}[pi]{sup {-+}} and K+K− [pi]° channels and set upper limits in the [eta]{sub c} 2!K+K−K+K− channels. All the results presented are preliminary. We have measured [Beta](B+ 2![eta]{sub c}K+) = (1.50 ± 0.19 ± 0.15 ± 0.46) x 10−3; and [Beta](B° 2![eta]{sub c}K°) = (1.06 ± 0.28 ± 0.11 {+-} 0.33) x 10−3 where the first error is statistical, the second systematic and the last due to the uncertainty on the world average [eta]{sub c} 2!K{bar K}[pi] branching fraction.
➤