skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Dalitz plot analysis of the D+ ---> K- pi+ pi+ decay in the FOCUS experiment

Abstract

Using data collected by the high energy photoproduction experiment FOCUS at Fermilab we performed a Dalitz plot analysis of the Cabibbo favored decay D{sup +} {yields} K{sup -}{pi}{sup +}{pi}{sup +}. This study uses 53653 Dalitz-plot events with a signal fraction of {approx} 97%, and represents the highest statistics, most complete Dalitz plot analysis for this channel. Results are presented and discussed using two different formalisms. The first is a simple sum of Breit-Wigner functions with freely fitted masses and widths. It is the model traditionally adopted and serves as comparison with the already published analyses. The second uses a K-matrix approach for the dominant S-wave, in which the parameters are fixed by first fitting K{pi} scattering data and continued to threshold by Chiral Perturbation Theory. We show that the Dalitz plot distribution for this decay is consistent with the assumption of two body dominance of the final state interactions and the description of these interactions is in agreement with other data on the K{pi} final state.

Authors:
; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
914595
Report Number(s):
FERMILAB-PUB-07-127-E
arXiv eprint number arXiv:0705.2248; TRN: US0803344
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys.Lett.B653:1-11,2007; Journal Volume: 653
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DALITZ PLOT; DECAY; DISTRIBUTION; FERMILAB; FINAL-STATE INTERACTIONS; K MATRIX; PERTURBATION THEORY; PHOTOPRODUCTION; SCATTERING; STATISTICS; Experiment-HEP

Citation Formats

Link, J.M., Yager, P.M., /UC, Davis, Anjos, J.C., Bediaga, I., Castromonte, C., Machado, A.A., Magnin, J., Massafferri, A., de Miranda, J.M., Pepe, I.M., Polycarpo, E., and /Rio de Janeiro, CBPF /CINVESTAV, IPN /Colorado U. /Fermilab /Frascati /Guanajuato U. /Illinois U., Urbana /Indiana U. /Korea U. /Kyungpook Natl. U. Dalitz plot analysis of the D+ ---> K- pi+ pi+ decay in the FOCUS experiment. United States: N. p., 2007. Web. doi:10.1016/j.physletb.2007.06.070.
Link, J.M., Yager, P.M., /UC, Davis, Anjos, J.C., Bediaga, I., Castromonte, C., Machado, A.A., Magnin, J., Massafferri, A., de Miranda, J.M., Pepe, I.M., Polycarpo, E., & /Rio de Janeiro, CBPF /CINVESTAV, IPN /Colorado U. /Fermilab /Frascati /Guanajuato U. /Illinois U., Urbana /Indiana U. /Korea U. /Kyungpook Natl. U. Dalitz plot analysis of the D+ ---> K- pi+ pi+ decay in the FOCUS experiment. United States. doi:10.1016/j.physletb.2007.06.070.
Link, J.M., Yager, P.M., /UC, Davis, Anjos, J.C., Bediaga, I., Castromonte, C., Machado, A.A., Magnin, J., Massafferri, A., de Miranda, J.M., Pepe, I.M., Polycarpo, E., and /Rio de Janeiro, CBPF /CINVESTAV, IPN /Colorado U. /Fermilab /Frascati /Guanajuato U. /Illinois U., Urbana /Indiana U. /Korea U. /Kyungpook Natl. U. Tue . "Dalitz plot analysis of the D+ ---> K- pi+ pi+ decay in the FOCUS experiment". United States. doi:10.1016/j.physletb.2007.06.070. https://www.osti.gov/servlets/purl/914595.
@article{osti_914595,
title = {Dalitz plot analysis of the D+ ---> K- pi+ pi+ decay in the FOCUS experiment},
author = {Link, J.M. and Yager, P.M. and /UC, Davis and Anjos, J.C. and Bediaga, I. and Castromonte, C. and Machado, A.A. and Magnin, J. and Massafferri, A. and de Miranda, J.M. and Pepe, I.M. and Polycarpo, E. and /Rio de Janeiro, CBPF /CINVESTAV, IPN /Colorado U. /Fermilab /Frascati /Guanajuato U. /Illinois U., Urbana /Indiana U. /Korea U. /Kyungpook Natl. U.},
abstractNote = {Using data collected by the high energy photoproduction experiment FOCUS at Fermilab we performed a Dalitz plot analysis of the Cabibbo favored decay D{sup +} {yields} K{sup -}{pi}{sup +}{pi}{sup +}. This study uses 53653 Dalitz-plot events with a signal fraction of {approx} 97%, and represents the highest statistics, most complete Dalitz plot analysis for this channel. Results are presented and discussed using two different formalisms. The first is a simple sum of Breit-Wigner functions with freely fitted masses and widths. It is the model traditionally adopted and serves as comparison with the already published analyses. The second uses a K-matrix approach for the dominant S-wave, in which the parameters are fixed by first fitting K{pi} scattering data and continued to threshold by Chiral Perturbation Theory. We show that the Dalitz plot distribution for this decay is consistent with the assumption of two body dominance of the final state interactions and the description of these interactions is in agreement with other data on the K{pi} final state.},
doi = {10.1016/j.physletb.2007.06.070},
journal = {Phys.Lett.B653:1-11,2007},
number = ,
volume = 653,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}
}