Abstract
The measurements of open charm production was proposed as an important tool to investigate the properties of the hot and dense matter formed in nucleus-nucleus collisions as well as to provide the means for model independent interpretation of the existing data on J/ψ suppression. Recently, the experimental setup of the NA61/SHINE experiment was supplemented with a Vertex Detector which was motivated by the importance and the possibility of the first direct measurements of open charm meson production in heavy ion collisions at SPS energies. First test data taken in December 2016 on Pb+Pb collisions at 150A GeV/c allowed to validate the general concept of D0 meson detection via its D0 → π+ + K− decay channel and delivered a first indication of open charm production.The physics motivation of open charm measurements at SPS energies, pilot results on open charm production, and finally, the future plans of open charm measurements in the NA61/SHINE experiment after LS2 are presented.
Highlights
The SPS Heavy Ion and Neutrino Experiment (NA61/SHINE) [1] is a fixed-target experiment located at the CERN Super Proton Synchrotron (SPS)
The strong interaction research program of NA61/SHINE is dedicated to the study of the properties of the onset of deconfinement and the search for the critical point of strongly interacting matter
In 2016 NA61/SHINE was upgraded with the Small Acceptance Vertex Detector (SAVD) based on MIMOSA26AHR sensors developed in IPHC Strasbourg
Summary
The SPS Heavy Ion and Neutrino Experiment (NA61/SHINE) [1] is a fixed-target experiment located at the CERN Super Proton Synchrotron (SPS). The strong interaction research program of NA61/SHINE is dedicated to the study of the properties of the onset of deconfinement and the search for the critical point of strongly interacting matter. These goals are being pursued by investigating p+p, p+A and A+A collisions at different beam momenta from 13A GeV/c to 150A GeV/c. In 2016 NA61/SHINE was upgraded with the Small Acceptance Vertex Detector (SAVD) based on MIMOSA26AHR sensors developed in IPHC Strasbourg Construction of this device was mostly motivated by the importance and the possibility of the first direct measurements of open charm meson production in heavy ion collisions at SPS energies. Precise measurements of charm hadron production by NA61/SHINE are expected to be performed in 2021–2024
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