2007/05/12 by The BABAR Collaboration, B. Aubert, M. Bóna +98
Chemistry · Medicine · Physics and Astronomy · #Amplitude #Analytical Chemistry (journal) #Chemistry #Helicity #Medical Imaging Techniques and Applications #Nuclear magnetic resonance #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.99.201802
published as Phys.Rev.Lett.99:201802,2007 · 7 pages, 8 postscript figures, submitted to Phys. Rev. Lett
arxiv created 2007/05/12 · openalex publication_date 2007/11/15 · arxiv updated 2010/04/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We perform an amplitude analysis of B^\ifmmode±\else\textpm\fi\ensuremath→\ensuremathφ(1020)K*(892)^\ifmmode±\else\textpm\fi decay with a sample of about 384\ifmmode×\else\texttimes\fi106 BB pairs recorded with the BABAR detector. Overall, twelve parameters are measured, including the fractions of longitudinal fL and parity-odd transverse f_\ensuremath⊥ amplitudes, branching fraction, strong phases, and six parameters sensitive to CP violation. We use the dependence on the K\ensuremathπ invariant mass of the interference between the JP=1^\ensuremath- and 0+ K\ensuremathπ components to resolve the discrete ambiguity in the determination of the strong and weak phases. Our measurements of fL=0.49\ifmmode±\else\textpm\fi0.05\ifmmode±\else\textpm\fi0.03, f_\ensuremath⊥=0.21\ifmmode±\else\textpm\fi0.05\ifmmode±\else\textpm\fi0.02, and the strong phases point to the presence of a substantial helicity-plus amplitude from a presently unknown source.