Probing Dense QCD Matter: Muon Measurements with the CBM Experiment at FAIR

Round 1

Reviewer 1 Report

Referee report on the manuscript particles-1204695

by A. Senger and P. Senger (for the CBM Collaboration)

entitled

"Probing dense QCD matter: Muon measurements with the

CBM experiment at FAIR"

In this article the authors present the part of the Compressed

Baryonic Matter (CBM) experiment at coming in the nearest future

FAIR accelerator concerning the measurement of dimuons in Au+Au

collisions at energies from 2 AGeV to 11 AGeV. An introduction

describes nicely the importance of muon pairs as probes carrying

out the information about temperature of the system. This allows

one to get the caloric curve and detect (if it exists) the first

order deconfinement phase transition. The present status of the

field is also discussed. After that the authors present the CBM

experimental setup and its Muon Detection System in more details.

The initial dimuon signal, particle multiplicities and background

were generated by combination of UrQMD, PLUTO and PHSD models.

Then these particles were used as input for the GEANT3-based

program, which propagated them through the detector systems. The

simulations show the good resolution of the CBM Muon Detector and,

therefore, its high discovery potential.

The paper is clearly written. All parts of the performance studies

are described, and conclusions are supported convincingly by the

figures. I have just one minor remark: Reference [14] in the

bibliography list coincides with Ref.[5].

After correction of this issue, I recommend publication of the

manuscript in Particles.

Author Response

Thank you for careful reading and pointing to the reference which we will correct

Reviewer 2 Report

The manuscript  reviews   measurement of muon pairs in Au-Au collisions with the CBM experiment at FAIR.  Di-leptons  are unique probes to determine the internal  temperature of the fireball, and  to reconstruct  a caloric curve.  The source temperature can be directly extracted from the slope of the dilepton invariant mass spectrum, as it is not affected by the radial flow. The measurement of the fireball temperature via lepton pairs in heavy-ion collisions at different beam energies gives also a possibility  to identify or rule out a  first-order phase transition with presence or absence of  the CEP.

Peter Senger is one of the most  known  specialists in  heavy-ion collision- and CBM-  physics.  The manuscript of A. Senger and P. Senger  is clearly written and its publication will be helpful for the broad audience  interested in heavy-ion collision physics. Thereby, I recommend publication of the manuscript in the present form.

Author Response

thank you for reviewing the manuscript