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EXA 2011 pp 111-115 | Cite as

Determination of the \(D_{s0}^{*}(2317)\) width with the PANDA detector

  • Marius Christian MertensEmail author
  • for the PANDA collaboration
Conference paper

Abstract

The \(D_{s0}^{*}(2317)\) meson which was discovered at BaBar in 2003 has the interesting properties of a surprisingly narrow width and a mass just below the DK threshold. Different theoretical models try to explain the nature of its properties. A precise knowledge of the width is an important criterion to evaluate these models. However, only an upper limit of 3.8 MeV is known so far. A suitable method to determine the width of particles which are significantly narrower than the experimental mass resolution is to measure the production cross section as a function of the center of mass energy. The shape of this excitation function allows to deduce the width. At PANDA, the measurement of the production cross section will be possible in antiproton-proton collisions. The PANDA experiment at the future FAIR facility is designed to combine precisely adjustable beam momenta and high luminosities which make it an excellent tool for this kind of measurement. In the following we will describe the experimental procedure to carry out this measurement with the PANDA detector in order to achieve a resolution in the order of 0.1 MeV for the width of the \(D_{s0}^{*}(2317)\).

Keywords

PANDA FAIR \(D_{s0}^{*}(2317)\) Width Excitation function 

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References

  1. 1.
    Faessler, A., et al.: Strong and radiative decays of the Ds(2317) meson in the DK-molecule picture. Phys. Rev. D 76, 014005 (2007)ADSCrossRefGoogle Scholar
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    Guo, F.-K., et al.: More kaonic bound states and a comprehensive interpretation of the DsJ states. Phys. Rev. D 84, 014013 (2011)ADSCrossRefGoogle Scholar
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    Nakamura, K., et al.: Particle data group. J. Phys. G 37, 075021 (2010)ADSCrossRefGoogle Scholar
  4. 4.
    PANDA Collaboration: Physics Performance Report for PANDA. ArXiv:0903.3905v1[hep-ex] (2009)

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Marius Christian Mertens
    • 1
    Email author
  • for the PANDA collaboration
  1. 1.Forschungszentrum Jülich GmbHJülichGermany

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