Observation of the Decay B{sup {+-}} {yields} {pi}{sup {+-}}{pi}{sup 0}, study of B{sup {+-}} {yields} K{sup {+-}}{pi}{sup 0}, and search for B{sup 0} {yields} {pi}{sup 0}{pi}{sup 0}
- SLAC
The authors present results for the branching fractions and charge asymmetries in B{sup {+-}} {yields} h{sup {+-}}{pi}{sup 0} (where h{sup {+-}} = {pi}{sup {+-}}, K{sup {+-}}) and a search for the decay B{sup 0} {yields} {pi}{sup 0}{pi}{sup 0} using a sample of approximately 88 million B{bar B} pairs collected by the BABAR detector at the PEP-II asymmetric-energy B Factor at SLAC. They measure {Beta}(B{sup {+-}} {yields} {pi}{sup {+-}}{pi}{sup 0}) = (5.5 {sub -0.9}{sup +1.0} {+-} 0.6) x 10{sup -6}, where the first error is statistical and the second is systematic. The B{sup {+-}} {yields} {pi}{sup {+-}}{pi}{sup 0} signal has a significance of 7.7{sigma} including systematic uncertainties. The authors simultaneously measure the K{sup {+-}} {pi}{sup 0} branching fraction to be {Beta}(B{sup {+-}} {yields} K{sup {+-}} {pi}{sup 0}) = (12.8{sub -1.1}{sup +1.2} {+-} 1.0) x 10{sup -6}. The charge asymmetries are {Alpha}{sub {pi}{sup {+-}}{pi}{sup 0}} = -0.03 {sub -0.17}{sup +0.18} {+-} 0.02 and {Alpha}{sub {Kappa}{sup {+-}}{pi}{sup 0}} = -0.09 {+-} 0.09 {+-} 0.01. The authors place a 90% confidence-level upper limit on the branching fraction {Beta}(B{sup 0} {yields} {pi}{sup 0}{pi}{sup 0}) of 3.6 x 10{sup -6}.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 812969
- Report Number(s):
- SLAC-PUB-9683
- Country of Publication:
- United States
- Language:
- English
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