Study of exotic mesons in pp and AA collisions

Mikhail Barabanov,Alexander Vodopyanov,S Bondarenko,V Burov,A Malakhov

doi:10.1051/epjconf/201920408011

Abstract

The possibility of study of exotic mesons is discussed. The paper includes detailed analysis of strong, weak and electromagnetic decays containing charmed quark-antiquark pair, physics simulation and event reconstruction at NICA.

Highlights

Good tracking and particle identification performance of NICA SPD over significant fraction of the final state phase space can provide a good opportunity to extend its ambitious physics program to studies of heavy charmed objects via their decays to electrons, hadrons or photons. It can be illustrated by the PYTHIA8 [6] simulated data on heavy quarkonia production in p-p collisions at √s ~ 26 GeV
After fitting the background to the polynomial function using side bands of invariant mass distribution and subtracting it from the original distribution it is possible to observe a clear peak from the X(3872) decay (Fig. 7)
Since the branching ratio of X(3872) to pairs of D-mesons is much higher (D+D− is ~ 40% and D0D*0\bar is ~ 55%), one should try to evaluate the possibility to reconstruct this state from hadronic decays of D-meson pairs

Summary

Introduction

Good tracking and particle identification performance of NICA SPD over significant fraction of the final state phase space can provide a good opportunity to extend its ambitious physics program to studies of heavy charmed objects via their decays to electrons, hadrons or photons. It can be illustrated by the PYTHIA8 [6] simulated data on heavy quarkonia production in p-p collisions at √s ~ 26 GeV.

Results

Conclusion