Measurement of the polarization in the decay

Measurement of the Decay Amplitudes and Branching Fractions ofB→J/ψK*andJessop1, Lingel2, Marsiske3 et al. 1997Phys. Rev. Lett.Self Cite

“…It has been noted [5,6], that form factor models cannot simultaneously explain the earlier experimental data for these two quantities. The high values of Γ L /Γ measured by ARGUS [7] and CLEO II [8], with low statistics, are not consistent with factorization and the measured value of R. The CDF collaboration has measured a lower value of Γ L /Γ [9]. Additional information about the validity of factorization can be obtained by a measurement of the decay amplitude phases, since any non-trivial phase differences indicate final state interactions and the breakdown of factorization [10].…”

Lepton-Flavor-Dependent Angular Analysis of B→K*ℓ+ℓ−

“…1, where the signal is parametrized by a Crystal Ball function [18] and the background is described by an ARGUS function [19]. The signal shape parameters are determined from a fit to B → J/ψK * data in the corresponding q 2 veto region while the background shape parameters are allowed to float in the fit.…”

Observation of the Annihilation Decay Mode B0→K+K−

“…The backgrounds due to the partial reconstruction of multibody b-hadron decays are parametrized by means of ARGUS functions [27] convolved with the same resolution function used for the signals. In the case of partially reconstructed B → K þ π − X decays, where X stands for one or more missing particles, and the pion is misidentified as a kaon, an incorrect description may alter the determination of the…”