Fit to the invariant-mass distribution of $\mathrm{D_s^+}$ and $\mathrm{D^+}$ mesons in the $2< \pt <2.5$ GeV/$c$ interval in pp collisions at $\sqrt{s}=13.6$ TeV

Scope: PWG
PWG-HF (Heavy Flavour)
Energy
13.6 TeV
System
p-p
Figure Image
Figure image (.eps)
Figure image (.pdf)
Figure Caption

Top: Fit to the invariant mass distribution of $\mathrm{D_s^+}$ and $\mathrm{D^+}$ candidates in the $2< \pt <2.5$ GeV/$c$ interval in pp collisions at $\sqrt{s}=13.6$ TeV, reconstructed in the $\mathrm{D_s^+, D^+ \rightarrow \phi\pi^+ \rightarrow K^+K^-\pi^+}$ decay channel. The fit function is composed of a second-degree polynomial function to describe the combinatorial background, a template fit for the $\mathrm{D^+ \rightarrow \pi^+K^-\pi^+}$ correlated background and two gaussian functions to describe the $\mathrm{D_s^+}$ and $\mathrm{D^+}$ peaks. Bottom: Distribution of the difference between the data points and the background function, made of a second-degree polynomial function to describe the combinatorial background, and a template function for the $\mathrm{D^+ \rightarrow \pi^+K^-\pi^+}$ correlated background

Detail description

Keywords: D-mesons, charm, prompt, invariant mass fit

Dataset: LHC22o_pass6