This webpage summarizes the blessed results for the observation of the orbitally excited (L = 1) B_s^** mesons in the fully reconstructed decay B_s^** -> B⁺ K^- or in the decay B_s^** -> B^+* K^- (B^+* -> B⁺ gamma), where we do not measure the gamma.

The B⁺ mesons are fully reconstructed in two decay channels
B⁺ -> J/ψ K⁺ (J/ψ -> μ⁺ μ^- ) and
B⁺ -> D⁰ π⁺ (D⁰ -> K⁺ π^- ).

The results have been produced for the ICHEP summer conference 2006 and have been blessed in the B Physcis Meeting on Thursday July 20, 2006.

We measure Q values ( m(B⁺ K^-) - m(B⁺) - m(K^-) ) of:

The resulting mass measurements of this analysis with the very probable interpretation of the signals as B₁ and B₂^* are:

A more detailed summary of the results can be found in this public note.

Below are first the eps and then the png versions of all figures meant for downloads.

• Figure 7 ( png ): Q value distribution for B_s^** candidates with fit for the candidates in both decay channels and additionally the wrong sign combinations.
  Version for b/w printing: eps, png
  Version from Phys. Rev. Lett. paper: eps, png
• Figure 1a ( png ): Invariant mass distribution of B⁺ candidates m( K ⁺ J/ψ)
• Figure 1b ( png ): Invariant mass distribution of B⁺ candidates m( π ⁺ D)
• Figure 2a ( png ): The distribution of the Neural Network output for background(data) and signal(MC simulation) trained for B_s^** for the decay channel including B⁺ -> J/ψ K⁺
• Figure 2b ( png ): The distribution of the Neural Network output for background(data) and signal(MC simulation) trained for B_s^** for the decay channel including B⁺ -> π⁺ D
• Figure 3a ( png ): Q value distribution of the selected B_s^** candidates with B⁺ -> J/&psi K decay
• Figure 3b ( png ): Q value distribution of the selected B_s^** candidates with B⁺ -> D π⁺ decay
• Figure 4 ( png ): Q value distribution of the full B_s^** sample (sum of the Figures 3a and 3b)
• Figure 5a ( png ): Q value distribution of the selected B_s^** candidates with fit for the decay channel with B⁺ -> J/&psi K
  Version for b/w printing: eps, png
• Figure 5b ( png ): Q value distribution of the selected B_s^** candidates with fit for the decay channel with B⁺ -> D π⁺
  Version for b/w printing: eps, png
• Figure 6 ( png ): Comparison between the background shapes for the two different decay channels of the B⁺ and the combined sample
• Figure 8a ( png ), Figure 8b ( png ): The likelihood for the signal interpreted as B_s1.
• Figure 9a ( png ), Figure 9b ( png ): The likelihood for the signal interpreted as B_s2^*.
• Figure 10a ( png ) Distribution of the Toy experiments for evaluation of the B_s1 p-Value
• Figure 10b ( png ): p-Value of the B_s1 as a function of negative logarithm of the likelihood ratio
• Figure 11a ( png ) Distribution of the Toy experiments for evaluation of the B_s2^* p-Value
• Figure 11b ( png ): p-Value of the B_s2^* as a function of negative logarithm of the likelihood ratio