NIKOLAEV Kirill

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STUDYING SOME PROCESSES, WHICH ARE CHARACTERIZED
BY THE PRODUCTION OF MUON IN THE FINAL STATE
NIKOLAEV Kirill ILYUSHENKA Yauheni
Laboratori Nazionali di Frascati, November 2005
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Simulations have been done by means of Monte
Carlo package PYTHIA (v 6.324)
2) Z0 production
4) cc production
7) H0 production
1) elastic scattering single diffraction double
diffraction inelastic scattering
3) W production
5) bb production
8) H0W or H0Z0
6) tt production
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For each processes have been generated 100 000
events

• 1 event if
• PTR (muons) gt 0.5 (3.5) GeV
• pseudorapidity lt 3.8
• Number of muons gt1
• VTR lt 100 mm

Output data file contains Muons
information Nmu muonID E Px Py Pz X Y Z
pseudorapidity Sig All mother particles
information for each muons Nmothers motherID
Emother Pxmother Pxmother Pxmother Xmother
Ymother Zmother
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• CASTOR (CERN)
• Process simulation
• Convert data from ntuple into root format

Output data files information
Nprocess CPU time, sec File size, Mb
1 19397 2.8
2 957 4.7
3 1625 4.4
4 1646 2.7
5 1617 3.1
6 1052 4.9
7 3122 3.6
8 1085 3.6

• Local machine (LNF)
• Merge data files for current process into one
• Make data analysis

CPU timeaverage(Nfile(Nevent10
000)10) File sizeaverage(Nfile(Nevent10
000)10)
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Comparing results of our simulations with ATLAS
TDR
Differential cross-section for W and W-
production as a function of the vector boson
rapidity yW. Points some reference points from
ATLAS TDR (v2, p518)
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Comparing results of our simulations with ATLAS
TDR
Differential cross-section for W and W-
production as a function of the pseudorapidity ?µ
(?llt2.5, P-lgt20GeV, ETmissgt20GeV). Points
some reference points from ATLAS TDR (v2, p518)
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Comparing results of our simulations with ATLAS
TDR
Differential cross-section for W and W-
production as a function of the transverse
momentum P-W. (?llt2.5, P-lgt20GeV,
ETmissgt20GeV). Points some reference points
from ATLAS TDR (v2, p519)
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Comparing results of our simulations with ATLAS
TDR
Differential cross-section for Z production as a
function of the transverse momentum P-Z.
(?µlt2.5, P-µgt20GeV). Points some reference
points from ATLAS TDR (v2, p522)
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Differential cross-section as function of number of muons Differential cross-section as function of muons pseudorapidity
Differential cross-section as function of muons transverse momentum Differential cross-section as function of muons transverse position
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Data from Z0
?µ lt 2.7, P-µ gt 6.5 GeV
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Data from W production
?µ lt 2.7, P-µ gt 6.5 GeV
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Data from W- production
?µ lt 2.7, P-µ gt 6.5 GeV
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Data from cc production
?µ lt 2.7, P-µ gt 6.5 GeV
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Data from bb production
?µ lt 2.7, P-µ gt 6.5 GeV
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Data from tt production
?µ lt 2.7, P-µ gt 6.5 GeV
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Data from H0 production
?µ lt 2.7, P-µ gt 6.5 GeV
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Data from H0W or H0Z0 production
?µ lt 2.7, P-µ gt 6.5 GeV
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Data from pileup production
?µ lt 2.7, P-µ gt 6.5 GeV
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• Have been done
• Main simulation program for different processes
• Data generation for each process
• Comparing our results with ATLAS TDR
• Basic data analysis
• In future
• To finish data analysis
• To continue data generation
• To understand the difference between our results
  and ATLAS TDR

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