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The small K π component in the K* wave functions

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Abstract.

We use a recently developed formalism which generalizes Weinberg's compositeness condition to partial waves higher than s -wave in order to determine the probability of having a K π component in the K* wave function. A fit is made to the K π phase shifts in p -wave, from where the coupling of K* to K π and the K π loop function are determined. These ingredients allow us to determine that the K* is a genuine state, different from a K π component, in a proportion of about 80%.

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Authors and Affiliations

  1. Departamento de Fısica Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Apartado 22085, 46071, Valencia, Spain

    C. W. Xiao, F. Aceti & M. Bayar

  2. Department of Physics, Kocaeli University, 41380, Izmit, Turkey

    M. Bayar

Authors
  1. C. W. Xiao
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  2. F. Aceti
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  3. M. Bayar
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Correspondence to C. W. Xiao.

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Communicated by H. Wittig

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Xiao, C.W., Aceti, F. & Bayar, M. The small K π component in the K* wave functions. Eur. Phys. J. A 49, 22 (2013). https://doi.org/10.1140/epja/i2013-13022-y

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  • DOI: https://doi.org/10.1140/epja/i2013-13022-y

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