BABAR Publications

Detailed Index as of April 26, 2024 07:02

PUB-04/048 Limit on the B0 -> rho0 rho0 Branching Fraction and Implications for the Cabibbo-Kobayashi-Maskawa Angle alpha
Doc Type Journal Papers
Record Created December 4, 2004
SLAC-PUB
SLAC-PUB-10909  No citations
Preprint # hep-ex/0412067
Comments LP2005 paper-325
Abstract 
content_type = "text/plain"
user_agent   = "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
moz          = "Mozilla/5.0 "
moz_version  = "5"


We search for the decay B0 -> rho0 rho0 in a data sample of about 
227 million Upsilon(4S)-> BBbar decays collected with the BABAR 
detector at the PEP-II asymmetric-energy e+e- collider at SLAC.  
We find no significant signal and set an upper limit of 1.1*10^-6 
at 90% CL on the branching fraction. As a result, the uncertainty 
due to penguin contributions on the CKM unitarity angle alpha 
measured in B -> rho rho decays is 11 degrees at 68% CL.
Revisions and Files 1 revised December 4, 2004
File Date
Thumbnails		File Name File Type File Format File Size (Kb) Comments
23-DEC-2004 abstract.txt Abstract txt 0.44
23-DEC-2004 babar-pub-04048.pdf Paper (journal paper or conference submission by BABAR Collaboration) pdf 163.47 paper
23-DEC-2004 babar-pub-04048.ps Paper (journal paper or conference submission by BABAR Collaboration) ps 403.39 paper
23-DEC-2004 fig01.eps Figure or plot eps 7.28 definition of helicity angles
23-DEC-2004 fig02a.eps Figure or plot eps 13.16 mES projection
23-DEC-2004 fig02b.eps Figure or plot eps 12.43 deltaE projection
23-DEC-2004 fig03.eps Figure or plot eps 15.83 delta(alpha_rhorho) chi^2 plot
Submitted ToPhysical Review Letters
Date SubmittedDecember 23, 2004
Journal Year2005
Journal Volume94
Journal Article/Page Range131801
Submitted To2005 Lepton Photon Symposium
Date SubmittedMay 30, 2005
Categories
  • AWG: Charmless Q2-body