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Limit on the B-0 ->rho(0)rho(0) branching fraction and implications for the Cabibbo-Kobayashi-Maskawa angle alpha
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BaBar Collaboration (Including: UNSPECIFIED). (2005) Limit on the B-0 ->rho(0)rho(0) branching fraction and implications for the Cabibbo-Kobayashi-Maskawa angle alpha. PHYSICAL REVIEW LETTERS, 94 (13). -. doi:10.1103/PhysRevLett.94.131801 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.94.131801
Abstract
We search for the decay B-0->rho(0)rho(0) in a data sample of about 227x10(6) Upsilon(4S)-> B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC. We find no significant signal and set an upper limit of 1.1x10(-6) at 90% C.L. on the branching fraction. As a result, the uncertainty due to penguin contributions on the Cabibbo-Kobayashi-Maskawa unitarity angle alpha measured in B ->rho rho decays is decreased to 11 degrees at 68% C.L.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Journal or Publication Title: | PHYSICAL REVIEW LETTERS | ||||
| Publisher: | AMERICAN PHYSICAL SOC | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 8 April 2005 | ||||
| Dates: |
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| Volume: | 94 | ||||
| Number: | 13 | ||||
| Number of Pages: | 7 | ||||
| Page Range: | - | ||||
| DOI: | 10.1103/PhysRevLett.94.131801 | ||||
| Publication Status: | Published |
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