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http://hdl.handle.net/2445/131456
Title: | Measurement of the hadronic form factor in D0→K−e+νe decays |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 24-Sep-2007 |
Publisher: | American Physical Society |
Abstract: | The shape of the hadronic form factor f + ( q 2 ) in the decay D 0 → K − e + ν e has been measured in a model independent analysis and compared with theoretical calculations. We use 75 fb − 1 of data recorded by the BABAR detector at the PEP-II electron-positron collider. The corresponding decay branching fraction, relative to the decay D 0 → K − π + , has also been measured to be R D = B ( D 0 → K − e + ν e ( γ ) ) / B ( D 0 → K − π + ( γ ) ) = 0.927 ± 0.007 ± 0.012 . From these results, and using the present world average value for B ( D 0 → K − π + ) , the normalization of the form factor at q 2 = 0 is determined to be f + ( 0 ) = 0.727 ± 0.007 ± 0.005 ± 0.007 where the uncertainties are statistical, systematic, and from external inputs, respectively. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.76.052005 |
It is part of: | Physical Review D, 2007, vol. 76, num. 5, p. 052005 |
URI: | http://hdl.handle.net/2445/131456 |
Related resource: | https://doi.org/10.1103/PhysRevD.76.052005 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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