Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B[superscript +]-->ρ[superscript 0]K[superscript *+] and B[superscript +]-->f0(980)K[superscript*+] decays
Name
Sanchez-2011-Measurements of bran.pdf
Size
304.28 KB
Format
Adobe PDF
Checksum (MD5)
c647ad4f5aecca0403dab2c83c8d2468
Author(s)
Dujmic, Denis
Sciolla, Gabriella
Zhao, M.
Cowan, Ray F
Alternative Title
Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B+→ρ0K*+ and B+→f0(980)K*+ decays
Date Issued
March 2011
Journal
Physical Review D
Publisher
American Physical Society
Citation
del Amo Sanchez, P. et al. (The BABAR Collaboration). "Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B[superscript +]-->ρ[superscript 0]K[superscript *+] and B[superscript +]-->f0(980)K[superscript*+] decays." Phys. Rev. D 83, 051101(R) (2011) [8 pages] © 2011 American Physical Society.
Version
Final published version
Abstract
We present measurements of the branching fractions, longitudinal polarization, and direct CP-violation asymmetries for the decays B+→ρ0K*+ and B+→f0(980)K*+ with a sample of (467±5)×106BB̅ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at the SLAC National Accelerator Laboratory. We observe B+→ρ0K*+ with a significance of 5.3σ and measure the branching fraction B(B+→ρ0K*+)=(4.6±1.0±0.4)×10-6, the longitudinal polarization fL=0.78±0.12±0.03, and the CP-violation asymmetry ACP=0.31±0.13±0.03. We observe B+→f0(980)K*+ and measure the branching fraction B(B+→f0(980)K*+)×B(f0(980)→π+π-)=(4.2±0.6±0.3)×10-6 and the CP-violation asymmetry ACP=-0.15±0.12±0.03. The first uncertainty quoted is statistical and the second is systematic.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevD.83.051101
