Search for CP violation in D-meson decays
type: CreativeWork
description: Using data from the Mark III detector at the $e\sp+e\sp-$ storage ring at SPEAR, an upper limit of.30 at the 90% confidence level is set on the magnitude of the CP asymmetry $A\sb{cp}$ for the CP eigenstate $D\sp0\to K\sp+K\sp-.$ This falls within the preexisting limit of.45 @ 90% CL set by FNAL experiment E687 using the same decay. The first measurement of $A\sb{cp}$ is made for two other CP eigenstates, $D\sp0\to K\sbsp{s}{0}K\sbsp{s}{0}$ and $D\sp0\to \pi\sp+\pi\sp-.$ An upper limit for the branching ratio for the decay, $D\sp0\to K\sp-\pi\sp+\pi\sp0\pi\sp0\pi\sp0,$ for which evidence was found in the process of measuring $A\sb{cp},$ is set at 12.1%.
abstract: Using data from the Mark III detector at the $e\sp+e\sp-$ storage ring at SPEAR, an upper limit of.30 at the 90% confidence level is set on the magnitude of the CP asymmetry $A\sb{cp}$ for the CP eigenstate $D\sp0\to K\sp+K\sp-.$ This falls within the preexisting limit of.45 @ 90% CL set by FNAL experiment E687 using the same decay. The first measurement of $A\sb{cp}$ is made for two other CP eigenstates, $D\sp0\to K\sbsp{s}{0}K\sbsp{s}{0}$ and $D\sp0\to \pi\sp+\pi\sp-.$ An upper limit for the branching ratio for the decay, $D\sp0\to K\sp-\pi\sp+\pi\sp0\pi\sp0\pi\sp0,$ for which evidence was found in the process of measuring $A\sb{cp},$ is set at 12.1%.
author: Stewart, Gay Bernadette
language: eng
keywords: Physics, Elementary Particles and High Energy
date published: 2011-05-07T13:01:14Z
date modified: 2026-07-22T22:25:17Z
provider: University of Illinois - Urbana-Champaign
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Illinois at Urbana-Champaign

PropertyValue
property ID: Handle
value: http://hdl.handle.net/2142/21194