Role of {pi}{pi} S-wave in CLEO D 3-body decays
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:
- Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260 (United States)
- Publication Date:
- 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.
Dytman, S. A. Role of {pi}{pi} S-wave in CLEO D 3-body decays. United States. doi:10.1063/1.2176558.
Dytman, S. A. Sat .
"Role of {pi}{pi} S-wave in CLEO D 3-body decays". United States.
doi:10.1063/1.2176558.
@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}
}
DOI: 10.1063/1.2176558
Other availability
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
-
Model independent measurement of S-wave K- pi+ systems using D+ ---> K pi pi decays from Fermilab E791
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 » -
Model-independent measurement of S-wave K{sup -}{pi}{sup +} systems using D{sup +}{yields}K{pi}{pi} decays from Fermilab E791
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 » -
Measurement of the K-{pi}+ S-wave System in D+ {yields} K-{pi}+{pi}+ Decays from Fermilab E791
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 » -
Elastic s-wave B{pi}, D{pi}, DK and K{pi} scattering from lattice calculations of scalar form factors in semileptonic decays
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)