Measurement of the decay B-0 -> pi(-) l(+) nu and determination of vertical bar V-ub vertical bar
- Title
- Measurement of the decay B-0 -> pi(-) l(+) nu and determination of vertical bar V-ub vertical bar
- Author
- 천병구
- Keywords
- FORM-FACTORS; MESON DECAYS; MONTE-CARLO; BELLE; HEAVY; IDENTIFICATION; SYMMETRY; DETECTOR; PHYSICS; SHAPES
- Issue Date
- 2011-04
- Publisher
- AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
- Citation
- PHYSICAL REVIEW D,권: 83 호: 7
- Abstract
- We present a measurement of the charmless semileptonic decay B-0 -> pi(-) l(+) nu using a data sample containing 657 x 10(6) B (B) over bar events collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider operating near the Y(4S) resonance. We determine the total branching fraction of the decay, B(B-0 -> pi(-) l(+) nu) = (1.49 +/- 0.04(stat) +/- 0.07(syst)) x 10(-)4. We also report a new precise measurement of the differential decay rate and extract the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-ub vertical bar using model-independent and model-dependent approaches. From a simultaneous fit to the measured differential decay rate and lattice QCD results, we obtain vertical bar V-ub vertical bar (3.43 +/- 0: 33) x 10(-3), where the error includes both experimental and theoretical uncertainties.
- URI
- https://journals.aps.org/prd/abstract/10.1103/PhysRevD.83.071101
- ISSN
- 1550-7998
- DOI
- 10.1103/PhysRevD.83.071101
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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- Measurement of the decay B-0 - pi(-) l(+) nu and determination of vertical bar V-ub vertical bar.pdfDownload
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