PR Plots of the D⁰D*^- Correlation Analysis

D0TrigD*-Probe Pairs eps file	This Figure serves to demonstrate the correlated production of trigger-side D0 and probe side D*- mesons. The D0D*- pairs are plotted on the plane spanned by the invariant Kπ masses of the trigger-side D0 and probe-side D0 from the D*+-> D0(-> K&pi) &pi*; decay. A cut on the D*+ mass difference Δ m = m(Kπ&pi*;) - m(Kπ) was applied to reject background: 0.14382 < Δ m < 0.14696GeV/c2).
D0Trig Projection eps file	This Figure shows the invariant mass of trigger side D0 candidates in the signal region of the probe-side D0. For this Figure the same Δ m cut as in the 1st Figure was applied.
Projection of probe-side D0 (from D*+ decay) eps file	This Figure shows the invariant mass of the tagged probe side D0 candidates from the D*+ -> D0(-> Kπ) π decay in the signal region of the trigger-side D0. For this (and the previous) Figure the same Δ m cut as in the 1st Figure was applied. This and the previous figure demonstrates that for both, the trigger and probe-side D0, the combinatorial background is flat, which allows for an two dimensional side band subtraction which is illustrated in the next Figure.
Definition of two dimensional side bands eps file	This Figure illustrates the two dimensional signal region and side band definitions. The signal region is indicated by the green square, the blue squares are the regions where a true trigger (probe) D0 meson is combined with a probe (trigger) D0 candidate from the combinatorial background. The pair candidates from background-background combinations, are subtracted twice. This is compensated by adding the pair candidates from the red regions.
Δ m of probe-side D*+ eps file	This Figure shows the D*+ mass difference and demonstrates how well the two dimensional sideband subtraction works. The histogram represents the count of probe-side D*+ candidates, the shaded area represents the weighted background events, the ticks mark the statistical error of the background estimate. The small peak of the background at the D*+ Δm value is due to probe-side true D*+ mesons combined with trigger-side D0 candidates from the combinatorial background.
Raw D0D*- pair yield vs. Δφ eps file	In this Figure the D0D*- pair candidate yield after sideband subtraction is plotted as function of difference in azimuth Δφ of the trigger-side D0 and probe-side D*+. The error bars are statistical errors only. The Δφ distribution peaks at Δφ = 180o and Δφ = 0o as one expects for flavor excitation and gluon splitting. The blue histogram indicates the contribution from secondary D from B hadron decays, estimated by b\bar{b} Pythia using Rick Fields Tune A to the underlying event. The Monte Carlo includes all three Leading Order production processes, flavor creation, flavor excitation and gluon splitting (Pythia MSEL 1). The shape of the Monte Carlo at low Δφ is dominated by B -> D0D*-X. The normalization of the Monte Carlo is chosen such that its area relative to the data represents the fraction of secondary pairs found in data.