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Title: Non-leptonic B decays: tests of factorization, measurements of polarizations, strong phases, and final state interactions

Abstract

Various factorization approaches can be challenged by measurements on a variety of quantities such as branching fractions, CP asymetries, strong phases and polarization fractions. This is of crucial importance to better understand hadronic B decays, in particular in unveiling the role of final state interactions. Some recent BaBar measurements concerning charm and charmless decays are presented here, mostly on 211fb-1, and provide valuable information on factorization, its origin and breakdown.

Authors:
 [1]
  1. Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, F-91128 Palaiseau (France)
Publication Date:
OSTI Identifier:
21056846
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 892; Journal Issue: 1; Conference: QCHS7: 7. conference on quark confinement and the hadron spectrum, Ponta Delgada, Acores (Portugal), 2-7 Sep 2006; Other Information: DOI: 10.1063/1.2714408; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B MESONS; BRANCHING RATIO; CHARM PARTICLES; ELECTRON-POSITRON INTERACTIONS; FACTORIZATION; FINAL-STATE INTERACTIONS; HADRONIC PARTICLE DECAY; MULTIPARTICLE SPECTROMETERS; PARTICLE IDENTIFICATION; PARTICLE PRODUCTION; POLARIZATION

Citation Formats

Latour, Emmanuel. Non-leptonic B decays: tests of factorization, measurements of polarizations, strong phases, and final state interactions. United States: N. p., 2007. Web. doi:10.1063/1.2714408.
Latour, Emmanuel. Non-leptonic B decays: tests of factorization, measurements of polarizations, strong phases, and final state interactions. United States. doi:10.1063/1.2714408.
Latour, Emmanuel. Tue . "Non-leptonic B decays: tests of factorization, measurements of polarizations, strong phases, and final state interactions". United States. doi:10.1063/1.2714408.
@article{osti_21056846,
title = {Non-leptonic B decays: tests of factorization, measurements of polarizations, strong phases, and final state interactions},
author = {Latour, Emmanuel},
abstractNote = {Various factorization approaches can be challenged by measurements on a variety of quantities such as branching fractions, CP asymetries, strong phases and polarization fractions. This is of crucial importance to better understand hadronic B decays, in particular in unveiling the role of final state interactions. Some recent BaBar measurements concerning charm and charmless decays are presented here, mostly on 211fb-1, and provide valuable information on factorization, its origin and breakdown.},
doi = {10.1063/1.2714408},
journal = {AIP Conference Proceedings},
number = 1,
volume = 892,
place = {United States},
year = {Tue Feb 27 00:00:00 EST 2007},
month = {Tue Feb 27 00:00:00 EST 2007}
}
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  • Using data from the B factories and the Tevatron, we perform tests of how well nonleptonic B decays of the kind B{yields}D{sub (s)}{sup (*)}P, where P is a pion or kaon, are described within the factorization framework. We find that factorization works well--as is theoretically expected--for color-allowed, tree-diagram-like topologies. Moreover, also exchange topologies, which have a nonfactorizable character, do not show any anomalous behavior. We discuss also isospin triangles between the B{yields}D{sup (*)}{pi} decay amplitudes, and determine the corresponding amplitudes in the complex plane, which show a significant enhancement of the color-suppressed tree contribution with respect to the factorization picture.more » Using data for B{yields}D{sup (*)}K decays, we determine SU(3)-breaking effects and cannot resolve any nonfactorizable SU(3)-breaking corrections larger than {approx}5%. In view of these results, we point out that a comparison between the B{sub d}{sup 0}{yields}D{sup +}{pi}{sup -} and B{sub s}{sup 0}{yields}D{sub s}{sup +}{pi}{sup -} decays offers an interesting new determination of f{sub d}/f{sub s}. Using CDF data, we obtain the most precise value of this ratio at CDF, and discuss the prospects for a corresponding measurement at LHCb.« less