Charged Particle Production in Association with B0,B+,Bs0 Mesons

This page summarizes the analysis in which yields of K+/K-, π+- and p/anti-p produced in association with B0, B+ and Bs0 mesons are measured. The primary motivation for this analysis is to compare the yields of kaons produced in association with Bs0 mesons with those produced in association with Bd0 mesons. This is of interest because it has been hypothesized that Bs0-K charge correlations may provide a powerful tag of the Bs0 flavor at production, and could be used to significantly improve limits on the Bs0 oscillation frequency.

A complete description of the analysis is available in CDF Public note 8137.

Blessed Figures and Tables



Total particle multiplicities in the cone (ΔR<0.7) around B0, B+ and B0s mesons. Open symbols are measurements based on CDF data, while the solid symbols are the predictions from PYTHIA.

Signals from semileptonic B decays reconstructed in the channels μ+D-+D*-, μ+D0 and μ+D-s.

Signals from semileptonic B decays reconstructed in the channels e+D-,e+D*-, e+D0 and e+D-s.

Pion multiplicity as a function of pT(track) in a cone (ΔR<0.7) around B0, B+ and B0s mesons. Open symbols are measurements based on CDF data, while the solid symbols are the predictions from PYTHIA.

Kaon multiplicity as a function of pT(track) in a cone (ΔR<0.7) around B0, B+ and B0s mesons. Open symbols are measurements based on CDF data, while the solid symbols are the predictions from PYTHIA.

Proton multiplicity as a function of pT(track) in a cone (ΔR<0.7) around B0, B+ and B0s mesons. Open symbols are measurements based on CDF data, while the solid symbols are the predictions from PYTHIA.

Electron multiplicity as a function of pT(track) in a cone (ΔR<0.7) around B0, B+ and B0s mesons. Open symbols are measurements based on CDF data, while the solid symbols are the predictions from PYTHIA.

Total charged particle multiplicity as a function of pT(track) in a cone (ΔR<0.7) around B0, B+ and B0s mesons. Open symbols are measurements based on CDF data, while the solid symbols are the predictions from PYTHIA.

Fraction of charged particles that are pions as a function of pT(track) in a cone (ΔR<0.7) around B0, B+ and B0s mesons. Open symbols are measurements based on CDF data, while the solid symbols are the predictions from PYTHIA.

Fraction of charged particles that are kaons as a function of pT(track) in a cone (ΔR<0.7) around B0, B+ and B0s mesons. This figure demonstrates that the probability of finding a kaon produced in association with a B0s meson is greater than for finding one produced in association with B0 or B+. Open symbols are measurements based on CDF data, while the solid symbols are the predictions from PYTHIA.

Fraction of charged particles that are protons as a function of pT(track) in a cone (ΔR<0.7) around B0, B+ and B0s mesons. Open symbols are measurements based on CDF data, while the solid symbols are the predictions from PYTHIA.

Fraction of charged particles that are electrons as a function of pT(track) in a cone (ΔR<0.7) around B0, B+ and B0s mesons.