Phase motion in the scalar low-mass ππ amplitude in D+→π−π+π+ decay

2004/05/31 by I. Bediaga, Ignacio Bediaga, J. M. De Miranda +1
Mathematics · Physics and Astronomy · #Amplitude #Dalitz plot #Geometry #High-Energy Particle Collisions Research #Isobar #Isoscalar #Mathematics #Meson #Neutrino #Nuclear physics #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Phase (matter) #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scalar (mathematics) #hep-ex

paper · pdf · doi:10.1016/j.physletb.2005.11.066

published as Phys.Lett.B633:167-172,2006 · 12 pages, 8 figures Accepted for publication at PLB

arxiv created 2005/11/28 · openalex publication_date 2005/12/06 · arxiv updated 2009/12/01 · openalex created_date 2017/03/16 · openalex updated_date 2026/08/05

Abstract

Applying the amplitude difference method to Fermilab experiment E791 D+→π−π+π+ data, we measure the low mass π+π− phase motion. Our results suggest a significant phase variation, compatible with the existence of an isoscalar σ(500) meson, as previously reported using an isobar model fit to the full Dalitz-plot density.

Citations

• Crossing symmetry violation of unitarized ChPT amplitudes in the resonance region
• SemileptonicDdecay into scalar mesons: A QCD sum rule approach
• Complex amplitude phase motion in Dalitz plot heavy meson three body decay
• On the scalar nonet lowest in mass
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• Review of Particle Physics