Relativistic three-body model for final state interaction in D+ → K-π+π+ decay

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorFrederico, T.
dc.creatorGuimarães, K. S F F
dc.creatorDe Paula, W.
dc.creatorBediaga, I.
dc.creatorDos Reis, A. C.
dc.creatorMagalhães, P. C.
dc.creatorRobillota, M.
dc.creatorDelfino, A.
dc.creatorTomio, L.
dc.date2014-05-27T11:25:23Z
dc.date2016-10-25T18:33:09Z
dc.date2014-05-27T11:25:23Z
dc.date2016-10-25T18:33:09Z
dc.date2010-12-01
dc.date.accessioned2017-04-06T01:48:08Z
dc.date.available2017-04-06T01:48:08Z
dc.identifierProceedings of Science.
dc.identifier1824-8039
dc.identifierhttp://hdl.handle.net/11449/72143
dc.identifierhttp://acervodigital.unesp.br/handle/11449/72143
dc.identifier2-s2.0-84883569762
dc.identifierhttp://pos.sissa.it/archive/conferences/119/005/LC2010_005.pdf
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/893040
dc.descriptionA challenge in mesonic three-body decays of heavy mesons is to quantify the contribution of re-scattering between the final mesons. D decays have the unique feature that make them a key to light meson spectroscopy, in particular to access the Kn S-wave phase-shifts. We built a relativis-tic three-body model for the final state interaction in D+ → K -π+π+ decay based on the ladder approximation of the Bethe-Salpeter equation projected on the light-front. The decay amplitude is separated in a smooth term, given by the direct partonic decay amplitude, and a three-body fully interacting contribution, that is factorized in the standard two-meson resonant amplitude times a reduced complex amplitude that carries the effect of the three-body rescattering mechanism. The off-shell reduced amplitude is a solution of an inhomogeneous Faddeev type three-dimensional integral equation, that includes only isospin 1/2 K -π+ interaction in the S-wave channel. The elastic K-π+ scattering amplitude is parameterized according to the LASS data[1]. The integral equation is solved numerically and preliminary results are presented and compared to the experimental data from the E791 Collaboration[2, 3] and FOCUS Collaboration[4, 5].
dc.languageeng
dc.relationProceedings of Science
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectBethe-Salpeter equation
dc.subjectComplex amplitude
dc.subjectFinal state interactions
dc.subjectLadder approximation
dc.subjectMeson spectroscopy
dc.subjectRescattering mechanism
dc.subjectResonant amplitude
dc.subjectScattering amplitudes
dc.subjectBosons
dc.subjectHadrons
dc.subjectIntegral equations
dc.subjectScattering
dc.subjectShear waves
dc.subjectHigh energy physics
dc.titleRelativistic three-body model for final state interaction in D+ → K-π+π+ decay
dc.typeOtro


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