Search for D0D¯0D0D¯0 mixing in the decays D0→K+π−π+π−

The BaBar Collaboration

Search for D0D¯0D0D¯0 mixing in the decays D0→K+π−π+π−

The BaBar Collaboration

Research output: Chapter in Book/Conference proceeding › Conference contribution

Abstract

We present a search for D0--anti-D0 mixing in the decays D0 --> K+ pi- pi+ pi- using 230.4 fb-1 of data collected with the BaBar detector at the PEP-II e+ e- collider at SLAC. Assuming CP conservation, we measure the time-integrated mixing rate R_M = (0.019 +0.016/-0.015(stat.) +/- 0.002(syst.))%, and R_M < 0.048% at the 95% confidence level. Using a frequentist method, we estimate that the data are consistent with no mixing at the 4.3% confidence level. We present results both with and without the assumption of CP conservation. By combining the value of R_M from this analysis with that obtained from an analysis of the decays D0 --> K+ pi- pi0, we find R_M = (0.020 +0.011/-0.010)%, where the uncertainty is statistical only. We determine the upper limit R_M < 0.042% at the 95% confidence level, and we find the combined data are consistent with the no-mixing hypothesis at the 2.1% confidence level.

Original language	English
Title of host publication	Proceedings of the 33rd International Conference on High Energy Physics
Publication status	Published - 2006
Event	33rd International Conference on High-Energy Physics - Moscow, Russian Federation Duration: 26 Jul 2006 → 2 Aug 2006

Conference

Conference	33rd International Conference on High-Energy Physics
Abbreviated title	ICHEP '06
Country/Territory	Russian Federation
City	Moscow
Period	26/07/06 → 2/08/06

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@inproceedings{487bd8380d914deb82941e4bc14cb6bd,

title = "Search for D0D¯0D0D¯0 mixing in the decays D0→K+π−π+π−",

abstract = "We present a search for D0--anti-D0 mixing in the decays D0 --> K+ pi- pi+ pi- using 230.4 fb-1 of data collected with the BaBar detector at the PEP-II e+ e- collider at SLAC. Assuming CP conservation, we measure the time-integrated mixing rate R\_M = (0.019 +0.016/-0.015(stat.) +/- 0.002(syst.))\%, and R\_M < 0.048\% at the 95\% confidence level. Using a frequentist method, we estimate that the data are consistent with no mixing at the 4.3\% confidence level. We present results both with and without the assumption of CP conservation. By combining the value of R\_M from this analysis with that obtained from an analysis of the decays D0 --> K+ pi- pi0, we find R\_M = (0.020 +0.011/-0.010)\%, where the uncertainty is statistical only. We determine the upper limit R\_M < 0.042\% at the 95\% confidence level, and we find the combined data are consistent with the no-mixing hypothesis at the 2.1\% confidence level.",

author = "George Lafferty and Nicholas Barlow and Roger Barlow and Yaw Chia and Christina Edgar and Mitchell Naisbit and Jennifer Williams and Jong Yi and \{The BaBar Collaboration\}",

year = "2006",

language = "English",

booktitle = "Proceedings of the 33rd International Conference on High Energy Physics",

note = "33rd International Conference on High-Energy Physics, ICHEP '06 ; Conference date: 26-07-2006 Through 02-08-2006",

}

TY - GEN

T1 - Search for D0D¯0D0D¯0 mixing in the decays D0→K+π−π+π−

AU - Lafferty, George

AU - Barlow, Nicholas

AU - Barlow, Roger

AU - Chia, Yaw

AU - Edgar, Christina

AU - Naisbit, Mitchell

AU - Williams, Jennifer

AU - Yi, Jong

AU - The BaBar Collaboration

PY - 2006

Y1 - 2006

N2 - We present a search for D0--anti-D0 mixing in the decays D0 --> K+ pi- pi+ pi- using 230.4 fb-1 of data collected with the BaBar detector at the PEP-II e+ e- collider at SLAC. Assuming CP conservation, we measure the time-integrated mixing rate R_M = (0.019 +0.016/-0.015(stat.) +/- 0.002(syst.))%, and R_M < 0.048% at the 95% confidence level. Using a frequentist method, we estimate that the data are consistent with no mixing at the 4.3% confidence level. We present results both with and without the assumption of CP conservation. By combining the value of R_M from this analysis with that obtained from an analysis of the decays D0 --> K+ pi- pi0, we find R_M = (0.020 +0.011/-0.010)%, where the uncertainty is statistical only. We determine the upper limit R_M < 0.042% at the 95% confidence level, and we find the combined data are consistent with the no-mixing hypothesis at the 2.1% confidence level.

AB - We present a search for D0--anti-D0 mixing in the decays D0 --> K+ pi- pi+ pi- using 230.4 fb-1 of data collected with the BaBar detector at the PEP-II e+ e- collider at SLAC. Assuming CP conservation, we measure the time-integrated mixing rate R_M = (0.019 +0.016/-0.015(stat.) +/- 0.002(syst.))%, and R_M < 0.048% at the 95% confidence level. Using a frequentist method, we estimate that the data are consistent with no mixing at the 4.3% confidence level. We present results both with and without the assumption of CP conservation. By combining the value of R_M from this analysis with that obtained from an analysis of the decays D0 --> K+ pi- pi0, we find R_M = (0.020 +0.011/-0.010)%, where the uncertainty is statistical only. We determine the upper limit R_M < 0.042% at the 95% confidence level, and we find the combined data are consistent with the no-mixing hypothesis at the 2.1% confidence level.

M3 - Conference contribution

BT - Proceedings of the 33rd International Conference on High Energy Physics

T2 - 33rd International Conference on High-Energy Physics

Y2 - 26 July 2006 through 2 August 2006

ER -

Search for D0D¯0D0D¯0 mixing in the decays D0→K+π−π+π−

Abstract

Conference

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