Branching fraction measurements of chargedBdecays toK*+K+K−,K*+π+K−,K*+K+π−andK*+π+π−final states

2006/07/31 by The BABAR Collaboration, R. Barate, B. Aubert +98
Chemistry · Mathematics · Physics and Astronomy · #Analytical Chemistry (journal) #Asymmetry #Branching (polymer chemistry) #Branching fraction #Chemistry #Chromatography #Electron–positron annihilation #Geometry #Hadron #High-Energy Particle Collisions Research #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pi #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.1103/physrevd.74.051104

published as Phys.Rev.D74:051104,2006 · 8 pages, 2 postscript figures, submitted to ICHEP2006, published in Phys. Rev. D (Rapid Communications). Compared to previous version, added figure and reworded a paragraph

openalex publication_date 2006/09/12 · arxiv created 2006/09/14 · arxiv updated 2010/03/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

Branching fraction and asymmetry measurements of charmless B⁺\ensuremath→K^*+h₁⁺h₂^\ensuremath- (where h_1,2=K, \ensuremathπ) decays are presented, using a data sample of 232\ifmmode×\else\texttimes\fi10⁶ \ensuremathΥ(4S)\ensuremath→BB decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. Using a maximum likelihood fit, the following branching fraction results were obtained: B(B⁺\ensuremath→K^*+K⁺K^\ensuremath-)=(36.2\ifmmode±\else\textpm\fi3.3\ifmmode±\else\textpm\fi3.6)\ifmmode×\else\texttimes\fi10^\ensuremath-6 and B(B⁺\ensuremath→K^*+\ensuremathπ⁺\ensuremathπ^\ensuremath-)=(75.3\ifmmode±\else\textpm\fi6.0\ifmmode±\else\textpm\fi8.1)\ifmmode×\else\texttimes\fi10^\ensuremath-6. Upper limits were set for B(B⁺\ensuremath→K^*+\ensuremathπ⁺K^\ensuremath-)<11.8\ifmmode×\else\texttimes\fi10^\ensuremath-6 and B(B⁺\ensuremath→K^*+K⁺\ensuremathπ^\ensuremath-)<6.1\ifmmode×\else\texttimes\fi10^\ensuremath-6 at 90% confidence level. The charge asymmetries for the decays B⁺\ensuremath→K^*+K⁺K^\ensuremath- and B⁺\ensuremath→K^*+\ensuremathπ⁺\ensuremathπ^\ensuremath- were measured to be A_K^*KK=0.11\ifmmode±\else\textpm\fi0.08\ifmmode±\else\textpm\fi0.03 and A_K^*\ensuremathπ\ensuremathπ=0.07\ifmmode±\else\textpm\fi0.07\ifmmode±\else\textpm\fi0.04, respectively. The first error quoted on branching fraction and asymmetry measurements is statistical and the second systematic.

Citations

• THE USE OF MULTIPLE MEASUREMENTS IN TAXONOMIC PROBLEMS
• The BABAR detector
• Rates, Polarizations, and Asymmetries in Charmless Vector-VectorBMeson Decays
• CP-Violation in the Renormalizable Theory of Weak Interaction
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)