Exclusive Charmless Semileptonic Decays B ---> X/U L Nu From BaBar

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The latest results of exclusive charmless semileptonic decays B {yields} {pi}{ell}v and B {yields} {rho}{ell}v from the BABAR Collaboration are presented. They are based on samples of B{bar B} events recorded on the {Upsilon}(4S) resonance. Several different experimental techniques are compared. Measurements of partial branching fractions in intervals of q{sup 2}, the four-momentum transfer squared, allow a study of the shape of the B {yields} {pi}{ell}v form factor and a comparison with theoretical calculations. The Cabibbo-Kobayashi-Maskawa matrix element |V{sub ub}| is determined using the measured branching fractions combined with recent form-factor predictions.

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5 pages

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Dingfelder, J. April 18, 2006.

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The latest results of exclusive charmless semileptonic decays B {yields} {pi}{ell}v and B {yields} {rho}{ell}v from the BABAR Collaboration are presented. They are based on samples of B{bar B} events recorded on the {Upsilon}(4S) resonance. Several different experimental techniques are compared. Measurements of partial branching fractions in intervals of q{sup 2}, the four-momentum transfer squared, allow a study of the shape of the B {yields} {pi}{ell}v form factor and a comparison with theoretical calculations. The Cabibbo-Kobayashi-Maskawa matrix element |V{sub ub}| is determined using the measured branching fractions combined with recent form-factor predictions.

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5 pages

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  • Prepared for EPS International Europhysics Conference on High Energy Physics (HEP-EPS 2005), Lisbon, Portugal, 21-27 Jul 2005

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  • Report No.: SLAC-PUB-11824
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 881553
  • Archival Resource Key: ark:/67531/metadc886081

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  • April 18, 2006

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  • Sept. 21, 2016, 2:29 a.m.

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  • Sept. 26, 2017, 1:33 p.m.

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Dingfelder, J. Exclusive Charmless Semileptonic Decays B ---> X/U L Nu From BaBar, article, April 18, 2006; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc886081/: accessed June 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.