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- W173072541 abstract "The BABAR experiment operating at the PEP-II e{sup +}e{sup -} collider is designed to study CP violation effects in the B-meson system. From May 1999 to June 2002 approximately 81 fb{sup -1} of data have been collected at the {Upsilon}(4S) resonance, containing (87.9 {+-} 1.4) Million BB pairs. From this data sample the branching fraction for the decay B{sup 0} {yields} {pi}{sup 0}{pi}{sup 0} has been extracted using a multi-dimensional maximum likelihood technique. With an efficiency of 20.4%, we find 36{sub -14-1}{sup +15+1} B{sup 0} {yields} {pi}{sup 0}{pi}{sup 0} events and measure the branching fraction to be {Beta}(B{sup 0} {yields} {pi}{sup 0}{pi}{sup 0}) = (2.0{sub -0.8-0.2}{sup +0.9+0.3}) x 10{sup -6} where the first error is statistical and the second systematic. The statistical significance is 3.1{sigma} and we report an upper limit of {Beta}(B{sup 0} {yields} {pi}{sup 0}{pi}{sup 0}) < 3.6 x 10{sup -6} (90%CL). The results of the fit are confirmed using a simple cut based analysis technique." @default.
- W173072541 created "2016-06-24" @default.
- W173072541 creator A5031422117 @default.
- W173072541 date "2003-08-20" @default.
- W173072541 modified "2023-09-26" @default.
- W173072541 title "Study of the Rare Decay B0 to pi0 pi0 at BaBar" @default.
- W173072541 doi "https://doi.org/10.2172/815293" @default.
- W173072541 hasPublicationYear "2003" @default.
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