BABAR Publications

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CONF-05/020 Measurement of CP Asymmetries in B0-->Ks Pi0 Pi0 Decays

Doc Type

Conference Submissions

Record Created

July 13, 2005

SLAC-PUB

SLAC-PUB-11390 No citations

Preprint #

hep-ex/0508017

Abstract

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We present a preliminary measurement of the time-dependent CP 
asymmetry for the neutral B-meson decay into the CP = +1 final
state K0S pi0 pi0,with K0S pi+ pi- and pi0 to gamma gamma. 
We use a sample of approximately 227 million B-meson pairs recorded 
at the Upsilon(4S) resonance by the BABAR detector at the PEP2 
B-Factory at SLAC. From a maximum
likelihood fit we extract the mixing-induced CP-violation
parameter S (K0S pi0 pi0) = 0.84 +/- 0.71, (stat) +/- 0.08, (syst) and the direct CP-violation
parameter C (K0S pi0 pi0) = 0.27 +/- 0.52, (stat) +/- 0.13, (syst), where the first uncertainty
is statistical and the second systematic.

Revisions and Files

1 revised July 13, 2005

File Date Thumbnails	File Name	File Type	File Format	File Size (Kb)
08-AUG-2005	abstract.txt	Abstract	txt	0.63
08-AUG-2005	babar conf 0520.pdf	Paper (journal paper or conference submission by BABAR Collaboration)	pdf	192.76
08-AUG-2005	babar conf 0520.ps.gz	Paper (journal paper or conference submission by BABAR Collaboration)	ps.gz	224.06
08-AUG-2005	fig01a.eps	Figure or plot	eps	16.01
08-AUG-2005	fig01b.eps	Figure or plot	eps	13.70
08-AUG-2005	fig01c.eps	Figure or plot	eps	14.52
08-AUG-2005	fig01d.eps	Figure or plot	eps	21.03
08-AUG-2005	fig01e.eps	Figure or plot	eps	14.14
08-AUG-2005	fig02.eps	Figure or plot	eps	22.13

Submitted To	2005 International Europhysics Conference on High Energy Physics
Date Submitted	August 7, 2005