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Related papers: Dalitz plot slope parameters for $K \to \pi\pi\pi$…

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The distribution of the $K^\pm\to\pi^\pm\pi^+\pi^-$ decays in the Dalitz plot has been measured by the NA48/2 experiment at the CERN SPS with a sample of $4.71\times 10^8$ fully reconstructed events. With the standard Particle Data Group…

High Energy Physics - Experiment · Physics 2012-08-27 2 Collaboration , J. R. Batley et al.

Relative phases of amplitudes for $D$ meson decays to a light pseudoscalar meson $P$ and a light vector meson $V$ decaying to two pseudoscalar mesons will lead to characteristic interferences on the three-body Dalitz plot. These phases may…

High Energy Physics - Phenomenology · Physics 2010-11-11 Bhubanjyoti Bhattacharya , Jonathan L. Rosner

A strong violation of the $\displaystyle{\Delta I = {1\over 2}} $ rule has experimentally been found in the $\displaystyle{D \to \pi\pi}$ decays [1]. In this letter we will show that the order of magnitude of this violation can be…

High Energy Physics - Phenomenology · Physics 2009-10-22 Francesco Sannino

We give a simple expression in linear and quadratic Dalitz--plot slopes which does not depend on the charge combination of the $3\pi$ state $(K^\pm \to \pi^{\pm}\pi^{+}\pi^{-}$ or $\pi^{\pm}\pi^{0}\pi^{0}$ and $K_L^{0} \to…

High Energy Physics - Phenomenology · Physics 2009-09-25 A. A. Bel'kov , G. Bohm , F. Matthäi , A. V. Lanyov , A. Schaale

Although two pion decays of $K$, $D$ and $B$ have similar isospin structures, there are dramatic differences in the ratios $R_K$ and $R_{D,B}$ of amplitudes from $\Delta I =3/2$ and $\Delta I =1/2$ interactions. In $K\to \pi\pi$ decays…

High Energy Physics - Phenomenology · Physics 2009-11-10 Peng Guo , Xiao-Gang He , Xue-Qian Li

The Dalitz plot slope parameters g, h and k for the K- -> pi0 pi0 pi- decay have been measured using in-flight decays detected with the ISTRA+ setup operating in the 25 GeV negative secondary beam of the U-70 PS. About 252 K events with…

We have studied the Cabibbo-suppressed decay mode D^0 into K^+ K^- pi^0 using a Dalitz plot technique and find the strong phase difference delta_D [defined as delta_(K*^- K^+) - delta_(K*^+ K^-)] = 332 degrees +- 8 degrees +- 11 degrees and…

High Energy Physics - Experiment · Physics 2010-04-08 C. Cawlfield , CLEO Collaboration

This Letter provides a new determination of the ten real coefficients that describe the structure of the $K \to \pi\pi\pi$ amplitudes in the limit where isospin is conserved and complex phases, due to either CP violation or final-state…

High Energy Physics - Phenomenology · Physics 2022-11-28 G. D'Ambrosio , M. Knecht , S. Neshatpour

Rates for particle interaction processes and decays will be modified in a Lorentz-violating quantum field theory, because of changes to the particle kinematics$-$particularly through the modified dispersion relations affecting the outgoing…

High Energy Physics - Phenomenology · Physics 2026-03-16 Joshua O'Connor , Brett Altschul

The $g$, $h$, and $k$ Dalitz plot parameters, which are coefficients in a series expansion of the squared module of the matrix element $|M(u,v)|^{2} \propto 1 + gu + hu^{2} + kv^{2}$ ($u$, $v$ are invariant variables), have been measured…

The NA48/2 experiment at the CERN SPS has collected an unprecedented sample of $K^\pm\to3\pi$ decays. The high statistics and the good resolution of the detectors allow a unique investigation of the detailed phase space distributions of…

High Energy Physics - Experiment · Physics 2009-04-16 Evgueni Goudzovski

We have studied, with the KLOE detector at the DA$\Phi$NE $\Phi$-Factory, the dynamics of the decay $\eta\to\pi^+\pi^-\pi^0$ using data from the radiative $\phi\to\eta\gamma$ decay for an integrated luminosity $L = 450 \textrm{pb^{-1}}$.…

Preliminary results of study of $K^\pm\to3\pi^\pm$ decays by the NA48/2 experiment at CERN SPS are presented. They include a precise measurement of the direct CP violating charge asymmetry of Dalitz plot linear slope parameters…

High Energy Physics - Experiment · Physics 2007-05-23 Evgueni Goudzovski

Dispersive effects from strong $\pi\pi$ rescattering in the final state (FSI) of weak $K\to\pi\pi$ decays are revisited with the goal to have a global view on their {\it relative} importance for the $\Delta I=1/2$ rule and the ratio…

High Energy Physics - Phenomenology · Physics 2017-02-01 Andrzej J. Buras , Jean-Marc Gerard

We use data collected with the CLEO II detector to perform a high-statistics measurement of the resonant substructure in $D^0 \to K^-\pi^+\pi^0$ decays. We find the Dalitz Plot is well represented by a combination of seven quasi-two-body…

High Energy Physics - Experiment · Physics 2010-04-08 S. Kopp , CLEO Collaboration

We quantify the important effect of strong final state interactions in the weak $K\to 2\pi$ amplitudes, using the measured $\pi$-$\pi$ phase shifts with J=0 and $I=0,2$. The main results of this analysis, with their implications for…

High Energy Physics - Phenomenology · Physics 2014-11-17 Elisabetta Pallante , Antonio Pich

We consider the impact of isospin violation on the analysis of K-> pi pi decays. We scrutinize, in particular, the phenomenological role played by the additional weak amplitude, of |Delta I|=5/2 in character, incurred by the presence of…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Gardner , G. Valencia

A simple Regge pole model for $K\pi$ scattering explains the large $e^{i \delta}$ between isospin amplitudes which is observed at the D meson mass ($\delta \approx \pi/2$). It predicts $\delta \approx 14^{\circ}- 20^{\circ}$ at the B mass.…

High Energy Physics - Phenomenology · Physics 2016-09-06 D. Delepine , J. -M. Gerard , J. Pestieau , J. Weyers

Dalitz-plot analyses of $B\rightarrow K\pi\pi$ decays provide direct access to decay amplitudes, and thereby weak and strong phases can be disentangled by resolving the interference patterns in phase space between intermediate resonant…

High Energy Physics - Phenomenology · Physics 2017-09-13 J. Charles , S. Descotes-Genon , J. Ocariz , A. Pérez Pérez

We perform an analysis of the $D^+\rightarrow K^0_S \pi^+ \pi^0$ Dalitz plot using a data set of 2.92 fb$^{-1}$ of $e^+e^-$ collisions at the $\psi(3770)$ accumulated by the BESIII Experiment, in which 166694 candidate events are selected…

High Energy Physics - Experiment · Physics 2013-12-02 Chengdong Fu
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