As first observed by the NA48/2 experiment at the CERN SPS, the pi(0)pi(0) invariant mass (M(00)) distribution from K(+/-) -> pi(+/-)pi(0)pi(0) decay shows a cusp-like anomaly at M(00) = 2m(+), where m(+) is the charged pion mass An analysis to extract the pi pi scattering lengths in the isospin I = 0 and I = 2 states. a(0) and a(2), respectively, has been recently reported In the present work the Dahtz plot of this decay is fitted to a new empirical parameterization suitable for practical purposes, such as Monte Carlo simulations of K(+/-) -> pi(+/-)pi(0)pi(0) decays

Empirical parameterization of the K+- -> pi+- pi0 pi0 decay Dalitz plot

VELTRI, MICHELE;
2010-01-01

Abstract

As first observed by the NA48/2 experiment at the CERN SPS, the pi(0)pi(0) invariant mass (M(00)) distribution from K(+/-) -> pi(+/-)pi(0)pi(0) decay shows a cusp-like anomaly at M(00) = 2m(+), where m(+) is the charged pion mass An analysis to extract the pi pi scattering lengths in the isospin I = 0 and I = 2 states. a(0) and a(2), respectively, has been recently reported In the present work the Dahtz plot of this decay is fitted to a new empirical parameterization suitable for practical purposes, such as Monte Carlo simulations of K(+/-) -> pi(+/-)pi(0)pi(0) decays
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11576/2502344
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