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Asymmetry parameter of K 1(1270,1400) by analyzing the \(B\rightarrow K_{1}\nu \overline{\nu}\) transition form factors within QCD

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Abstract

Separating the mixture of the K 1(1270) and K 1(1400) states, the \(B\rightarrow K_{1}(1270,1400)\nu\overline{\nu}\) transition form factors are calculated in the three-point QCD sum rule approach. The longitudinal, transverse and total decay widths as well as the asymmetry parameter, characterizing the polarization of the axial K 1(1270,1400) and the branching ratio for these decays, are evaluated.

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Authors and Affiliations

  1. Physics Department, Middle East Technical University, 06531, Ankara, Turkey

    M. Bayar & K. Azizi

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  1. M. Bayar
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  2. K. Azizi
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Correspondence to M. Bayar.

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Bayar, M., Azizi, K. Asymmetry parameter of K 1(1270,1400) by analyzing the \(B\rightarrow K_{1}\nu \overline{\nu}\) transition form factors within QCD. Eur. Phys. J. C 61, 401–410 (2009). https://doi.org/10.1140/epjc/s10052-009-1001-7

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  • DOI: https://doi.org/10.1140/epjc/s10052-009-1001-7

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