Final-state polarization in Bs0 decays |
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Authors: | Alakabha Datta David London Joaquim Matias Makiko Nagashima Alejandro Szynkman |
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Affiliation: | (1) Dept. of Physics and Astronomy, 108 Lewis Hall, University of Mississippi, Oxford, MS 38677-1848, USA;(2) Physique des Particules, Université de Montréal, C.P. 6128, succ. centre-ville, Montréal, QC, Canada, H3C 3J7;(3) IFAE, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain |
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Abstract: | Certain B s 0→V 1 V 2 decays (V i is a vector meson) can be related by flavor SU(3) symmetry to corresponding B d 0→V 3 V 4 decays. In this paper, we show that the final-state polarization can be predicted in the B s 0 decay, assuming polarization measurements of the B d 0 decay. This can be done within the scenario of penguin annihilation (PA), which has been suggested as an explanation of the unexpectedly large transverse polarization in B→φ K *. PA is used to estimate the breaking of flavor SU(3) symmetry in pairs of decays. Two of these for which PA makes a reasonably precise prediction of the size of SU(3) breaking are (B s 0→φ φ,B d 0→φ K 0*) and ( ). The polarization measurement in the B d 0 decay can be used to predict the transverse polarization in the B s 0 decay and will allow for testing of PA as well as the other assumptions in the analysis. |
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Keywords: | KeywordHeading" >PACS 13.25.Hw 13.88.+e 11.30.Er |
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