Simulation studies for j/psi at 12 A Gev and 30 A GeV energies

Simulation studies for j/psi at 12 A Gev and 30 A GeV energies

Mukesh Kumar SharmaResearch Scholar

University of Jammu

04/21/23 15th CBM-India Collaboration Meeting, BHU

OUTLINE

MOTIVATIONMuCh GEOMETRYDATA SET USEDOBSERVATION

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MOTIVATION

MuCh Detector is aimed to detect dimuon in heavy ion collision

SIS100 simulation with new geometryOptimization of geometryThe aim is to study supression of heavy quarks

resonances J/psi .The supression of these heavy quarks resonances is most promising signature of QGP

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CbmRoot Version: Trunk version

MuCh geometry : Standard Geometry

• 2 layers in 5 stations

• Distance between layers ->10 cm.

• Gap between absorbers ->20 cm

• 3 layers at the last trigger station

• Total 13 layers

• Total length of MuCh = 350 cm

Signal : J/ decayed muons from Pluto

Background : minimum bias UrQMD events for Au+ Au at 12 GeV and p-Au at 30GeV for 3k events

Input : reconstructed MuCh hits

Simulation

Absorber thickness (cm):20 20 20 30 35 100

04/21/23 45th CBM-India Collaboration Meeting, BHU

DATA SET USED• Simulation of Au-Au and p-Au at 12 GeV and

30 GeV for 3k events• Cuts used 70% hit criterion(reconstructable

track)• No. of Much-hits >10• No. of sts-Hits>4• Event Generation Signal events->Pluto Background-> URQMD04/21/23 55th CBM-India Collaboration Meeting, BHU

OBSERVATIONFOR

SIGNAL EVENTS

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12 Gev 30 GeV

Au-Au at 12 GeV p-Au at 30 Gev

MOMENTUM DISTRIBUTION

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Au-Au at 12 GeV p-Au at 30 Gev

Pt DISTRIBUTION

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Au-Au at 12 GeVp-Au at 30 Gev

RAPIDITY DISTRIBUTION

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PSEUDORAPIDITY DISTRIBUTION

Au-Au at 12 GeV p-Au at 30 Gev04/21/23 105th CBM-India Collaboration Meeting, BHU

p-Au at 30 GevAu-Au at 12 GeV

Rapidity vs Pt

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Au-Au at 12 GeV p-Au at 30 Gev

INVARIANT MASS DISTRIBUTION

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OBSERVATIONSFOR

EMBEDED EVENTS

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MOMENTUM DISTRIBUTION

Au-Au at 12 GeV

p-Au at 30 Gev04/21/23 145th CBM-India Collaboration Meeting, BHU

Pt DISTRIBUTION

Au-Au at 12 GeV

p-Au at 30 Gev04/21/23 155th CBM-India Collaboration Meeting, BHU

RAPIDITY DISTRIBUTION

Au-Au at12Gev

p-Au at 30 Gev04/21/23 165th CBM-India Collaboration Meeting, BHU

PSEUDORAPIDITY DISTRIBUTION

Au-Au at12Gev

p-Au at 30 Gev04/21/23 175th CBM-India Collaboration Meeting, BHU

Au-Au at12Gev

Rapidity vs Pt

p-Au at 30 Gev04/21/23 185th CBM-India Collaboration Meeting, BHU

Au-Au at12Gevp-Au at 30 Gev

Invariant mass distribution

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FUTURE PLANS

Geomtry Optimization for SIS100 Particle production studies at 12 A Gev and 30

A Gev for Au-Au and p-Au. Comparison with the results from AGS

experiments

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THANKS

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