Measurement of the K- pi+ S-wave system in D+ ---> K- pi+ pi+ decays from Fermilab E791
Conference
·
· AIP Conf.Proc.814:675-679,2006
OSTI ID:879151
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{sup +} {yields} K{sup -}{pi}{sup +}{pi}{sup +} decays. These are compared with results obtained from a fit where the S-wave is assumed to have {kappa} and K{sub 0}{sup +}(1430) resonances. Results are also compared with measurements of K{sup -} {pi}{sup +} 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 behavior below K{eta}' threshold should match that in elastic scattering, is not well supported by these data. Production of K{sup -} {pi}{sup +} from these D decays is also studied.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 879151
- Report Number(s):
- FERMILAB-CONF-05-467-E; arXiv eprint number hep-ex/0510045
- Conference Information:
- Journal Name: AIP Conf.Proc.814:675-679,2006
- Country of Publication:
- United States
- Language:
- English
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