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Title: Amplitude Analysis of the Decay D0 to K-K+pi0

Abstract

Using 385 fb{sup -1} of e{sup +}e{sup -} collisions, they study the amplitudes of the singly Cabibbo-suppressed decay D{sup 0} {yields} K{sup -}K{sup +}{pi}{sup 0}. They measure the strong phase difference between the {bar D}{sup 0} and D{sup 0} decays to K*(892){sup +}K{sup -} to be -35.5{sup o} {+-} 1.9{sup o}(stat) {+-} 2.2{sup o}(syst), and their amplitude ratio to be 0.599 {+-} 0.013(stat) {+-} 0.011(syst). They observe contributions from the K{pi} and K{sup -}K{sup +} scalar and vector amplitudes, and analyze their angular moments. They find no evidence for charged {kappa}, nor for higher spin states. They also perform a partial wave analysis of the K{sup -}K{sup +} system in a limited mass range.

Authors:
;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
903009
Report Number(s):
SLAC-PUB-12416
arXiv:0704.3593; TRN: US0703094
DOE Contract Number:
AC02-76SF00515
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review D
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DECAY AMPLITUDES; PARTICLE DECAY; D NEUTRAL MESONS; KAONS MINUS; KAONS PLUS; PIONS NEUTRAL; K*-892 MESONS; ELECTRON-POSITRON COLLISIONS; Experiment-HEP,HEPEX

Citation Formats

Collaboration, BABAR, and Aubert, B. Amplitude Analysis of the Decay D0 to K-K+pi0. United States: N. p., 2007. Web.
Collaboration, BABAR, & Aubert, B. Amplitude Analysis of the Decay D0 to K-K+pi0. United States.
Collaboration, BABAR, and Aubert, B. Mon . "Amplitude Analysis of the Decay D0 to K-K+pi0". United States. doi:. https://www.osti.gov/servlets/purl/903009.
@article{osti_903009,
title = {Amplitude Analysis of the Decay D0 to K-K+pi0},
author = {Collaboration, BABAR and Aubert, B.},
abstractNote = {Using 385 fb{sup -1} of e{sup +}e{sup -} collisions, they study the amplitudes of the singly Cabibbo-suppressed decay D{sup 0} {yields} K{sup -}K{sup +}{pi}{sup 0}. They measure the strong phase difference between the {bar D}{sup 0} and D{sup 0} decays to K*(892){sup +}K{sup -} to be -35.5{sup o} {+-} 1.9{sup o}(stat) {+-} 2.2{sup o}(syst), and their amplitude ratio to be 0.599 {+-} 0.013(stat) {+-} 0.011(syst). They observe contributions from the K{pi} and K{sup -}K{sup +} scalar and vector amplitudes, and analyze their angular moments. They find no evidence for charged {kappa}, nor for higher spin states. They also perform a partial wave analysis of the K{sup -}K{sup +} system in a limited mass range.},
doi = {},
journal = {Physical Review D},
number = ,
volume = ,
place = {United States},
year = {Mon Apr 30 00:00:00 EDT 2007},
month = {Mon Apr 30 00:00:00 EDT 2007}
}
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  • Analyzing D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0} decays, herein are presented the methods and results of a search for D{sup 0}-{bar D}{sup 0} mixing, a measurement of the branching ratio R {equivalent_to} {Lambda}(D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0})/{Lambda}(D{sup 0} {yields} K{sup -}{pi}{sup +}{pi}{sup 0}), and measurements of the contributions from D{sup 0} {yields} K{sup +}{rho}{sup -}, K*{sup +}{pi}{sup -}, K*{sup 0}{pi}{sup 0}; 230.4 fb{sup -1} of data collected from the BABAR detector at the PEP-II collider during 2000-2004 (Runs 1-4) are analyzed. An event-level tagging technique is developed, which facilitates the accurate determination of doubly Cabibbo-suppressed resonance contributionsmore » by suppressing background from Cabibbo-favored decays. The branching ratio is measured as R = (0.214 {+-} 0.008 (stat) {+-} 0.008 (syst))%, with (46.1 {+-} 3.3 (stat) {+-} 2.9 (syst))% of D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0} decays proceeding through the channel D{sup 0} {yields} K*{sup +}{pi}{sup -}. The data are consistent with the null-D-mixing hypothesis at a confidence level of 10%, and the expected value of {+-} {radical}(x{sup 2} + y{sup 2}) is measured as -0.013 {+-} 0.010 (stat), indicating negative interference between mixing and doubly Cabibbo-suppressed decay. The expected value of the integrated mixing rate is (x{sup 2} + y{sup 2})/2 = (0.013 {+-} 0.013 (stat))%.« less
  • We present a preliminary search for D{sup 0}-{bar D}{sup 0} mixing using the decays D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0}, additionally presenting Dalitz-plot distributions and a measurement of the branching ratio for this mode. A new tagging technique is used to produce the doubly Cabibbo-suppressed Dalitz plot, which in turn is used to motivate the method used for the D-mixing search. We analyze 230.4 fb{sup -1} of data collected from the BABAR detector at the PEP-II collider. Assuming CP conservation, we find R{sub M} < 0.054% with 95% confidence, and we estimate that the data are consistent with nomore » mixing at a 4.5% confidence level. We present D-mixing results both with and without the assumption of CP conservation.« less
  • We present a preliminary search for D{sup 0}-{bar D}{sup 0} mixing using the decays D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0}, additionally presenting Dalitz-plot distributions and a measurement of the branching ratio for this mode. A new tagging technique is used to produce the doubly Cabibbo-suppressed Dalitz plot, which in turn is used to motivate the method used for the D-mixing search. We analyze 230.4 fb{sup -1} of data collected from the BABAR detector at the PEP-II collider. Assuming CP conservation, we find R{sub M} < 0.054% with 95% confidence, and we estimate that the data are consistent with nomore » mixing at a 4.5% confidence level. We present D-mixing results both with and without the assumption of CP conservation.« less