Role of {pi}{pi} S-wave in CLEO D 3-body decays

doi:10.1063/1.2176558

Title: Role of {pi}{pi} S-wave in CLEO D 3-body decays

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Abstract

D meson 3-body hadronic decay data in the past were analyzed with Breit-Wigner amplitude fits. However, the complicated dynamics of the final states is known from previous studies to be poorly described by Breit-Wigner models. This short paper discusses work within CLEO to use coupled channel techniques to describe these decays.

Authors:

Dytman, S. A. ^[1]

Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260 (United States)

Publication Date:: Sat Feb 11 00:00:00 EST 2006

OSTI Identifier:: 20798149

Resource Type:: Journal Article

Resource Relation:: Journal Name: AIP Conference Proceedings; Journal Volume: 814; Journal Issue: 1; Conference: 11. international conference on hadron spectroscopy, Rio de Janeiro (Brazil), 21-26 Aug 2005; Other Information: DOI: 10.1063/1.2176558; (c) 2006 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; AMPLITUDES; BREIT-WIGNER FORMULA; CESR STORAGE RING; COUPLED CHANNEL THEORY; D MESONS; HADRONIC PARTICLE DECAY; MULTIPARTICLE SPECTROMETERS; PARTICLE IDENTIFICATION; PION-PION INTERACTIONS; PIONS; S WAVES

Citation Formats


                    Dytman, S. A.. Role of {pi}{pi} S-wave in CLEO D 3-body decays.  United States: N. p., 2006. 
        Web.  doi:10.1063/1.2176558.

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                    Dytman, S. A.. Role of {pi}{pi} S-wave in CLEO D 3-body decays.  United States.  doi:10.1063/1.2176558.

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                    Dytman, S. A.. Sat .  
        "Role of {pi}{pi} S-wave in CLEO D 3-body decays".  United States.  
        doi:10.1063/1.2176558.

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@article{osti_20798149,

  title        = {Role of {pi}{pi} S-wave in CLEO D 3-body decays},

  author       = {Dytman, S. A.},

  abstractNote = {D meson 3-body hadronic decay data in the past were analyzed with Breit-Wigner amplitude fits. However, the complicated dynamics of the final states is known from previous studies to be poorly described by Breit-Wigner models. This short paper discusses work within CLEO to use coupled channel techniques to describe these decays.},

  doi          = {10.1063/1.2176558},

  journal      = {AIP Conference Proceedings},

  number       = 1,

  volume       = 814,

  place        = {United States},

  year         = {Sat Feb 11 00:00:00 EST 2006},

  month        = {Sat Feb 11 00:00:00 EST 2006}

}

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DOI: 10.1063/1.2176558

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Publisher's Note: Model-independent measurement of S-wave K{sup -}{pi}{sup +} systems using D{sup +}{yields}K{pi}{pi} decays from Fermilab E791 [Phys. Rev. D 73, 032004 (2006)]

Aitala, E. M. ; Amato, S. ; Anjos, J. C. ; ... - Physical Review. D, Particles Fields

No abstract prepared.
DOI: 10.1103/PHYSREVD.74.059901
Model independent measurement of S-wave K- pi+ systems using D+ ---> K pi pi decays from Fermilab E791

Aitala, E.M. ; Amato, S. ; Anjos, J.C. ; ... - Physical Review, D (Particles Fields)

A model-independent partial-wave analysis of the S-wave component of the K{pi} system from decays of D{sup +} mesons to the three-body K{sup -}{pi}{sup +}{pi}{sup +} final state is described. Data come from the Fermilab E791 experiment. Amplitude measurements are made independently for ranges of K{sup -}{pi}{sup +} invariant mass, and results are obtained below 825 MeV/c{sup 2}, where previous measurements exist only in two mass bins. This method of parametrizing a three-body decay amplitude represents a new approach to analyzing such decays. Though no model is required for the S-wave, a parametrization of the relatively well-known reference P- and D-waves,more »« less
Full Text Available
Model-independent measurement of S-wave K{sup -}{pi}{sup +} systems using D{sup +}{yields}K{pi}{pi} decays from Fermilab E791

Aitala, E.M. ; Cremaldi, L.M. ; Gounder, K. ; ... - Physical Review. D, Particles Fields

A model-independent partial-wave analysis of the S-wave component of the K{pi} system from decays of D{sup +} mesons to the three-body K{sup -}{pi}{sup +}{pi}{sup +} final state is described. Data come from the Fermilab E791 experiment. Amplitude measurements are made independently for ranges of K{sup -}{pi}{sup +} invariant mass, and results are obtained below 825 MeV/c{sup 2}, where previous measurements exist only in two mass bins. This method of parametrizing a three-body decay amplitude represents a new approach to analyzing such decays. Though no model is required for the S-wave, a parametrization of the relatively well-known reference P- and D-waves,more »« less
DOI: 10.1103/PhysRevD.73.032004
Measurement of the K-{pi}+ S-wave System in D+ {yields} K-{pi}+{pi}+ Decays from Fermilab E791

Meadows, B. - AIP Conference Proceedings

A new approach to the analysis of three body decays is presented. Measurements of the S-wave K{pi} amplitude are made in independent ranges of invariant mass from threshold up to the upper kinematic limit in D+ {yields} K-{pi}+{pi}+ decays. These are compared with results obtained from a fit where the S-wave is assumed to have {kappa} and K{sub 0}*(1430) resonances. Results are also compared with measurements of K-{pi}+ elastic scattering. Contributions from I = (1/2) and I = (3/2) are not resolved in this study. If I = (1/2) dominates, however, the Watson theorem prediction, that the phase behaviour belowmore »« less
DOI: 10.1063/1.2176563
Elastic s-wave B{pi}, D{pi}, DK and K{pi} scattering from lattice calculations of scalar form factors in semileptonic decays

Flynn, Jonathan M. ; Nieves, Juan - Physical Review. D, Particles Fields

We show how theoretical, principally lattice calculations of the scalar form factors in semileptonic pseudoscalar-to-pseudoscalar decays can be used to extract information about the corresponding elastic s-wave scattering channels. We find values for the scattering lengths m{sub {pi}}a=0.179(17)(14), 0.26(26) and 0.29(4) for elastic s-wave isospin-1/2 K{pi}, B{pi} and D{pi} channels, respectively. We also determine phase shifts. For the DK channel we find hints that there is a bound state which can be identified with the recently discovered D{sub s0}{sup +}(2317)
DOI: 10.1103/PHYSREVD.75.074024