Ptmurec and ptrec rms for pt 100 gev muons
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PtMurec and PtRec RMS for Pt=100 GeV muons. N. Terentiev (Carnegie Mellon University) Fermilab Jan.11, 2005. PtMurec and PtRec RMS. Data The single muon particle gun sample, Pt=100 GeV Flat in Phi over all Phi Flat in Eta from -2.5 to 2.5 1,000 events OSCAR_3_2_2 and ORCA_8_1_3

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Ptmurec and ptrec rms for pt 100 gev muons

PtMurec and PtRec RMS forPt=100 GeV muons

N. Terentiev

(Carnegie Mellon University)

Fermilab Jan.11, 2005


Ptmurec and ptrec rms
PtMurec and PtRec RMS

  • Data

    • The single muon particle gun sample, Pt=100 GeV

    • Flat in Phi over all Phi

    • Flat in Eta from -2.5 to 2.5

    • 1,000 events

    • OSCAR_3_2_2 and ORCA_8_1_3

  • Selection

    • One simulated muon in GEANT block (PtGen)

    • One reconstructed muon track (PtMurec)

      (Tracker and Muon Barrel / Muon Endcap)

    • One Reconstructed track in Tracker (PtRec)

    • Overall yield 87.4%

  • Compare RMS for (PtMurec-PtGen) and (PtRec-PtGen)


Ptmurec and ptrec rms1
PtMurec and PtRec RMS

  • RMS=3.50(08) RMS=2.82(07)


Ptmurec and ptrec rms2
PtMurec and PtRec RMS

  • RMS=2.09(09) RMS=1.92(08)


Ptmurec and ptrec rms3
PtMurec and PtRec RMS

  • RMS=2.29(09) RMS=2.29(09)


Ptmurec and ptrec rms4
PtMurec and PtRec RMS

  • RMS=1.74(07) RMS=1.44(06)


Ptmurec and ptrec rms5

RMS Summary

PtMurec-PtGen PtRec-PtGen Conditions

PtMurec and PtRec RMS


Ptmurec and ptrec rms6
PtMurec and PtRec RMS

  • Conclusion

    • RMS(PtMurec-PtGen) and RMS(PtRec-PtGen) are different mainly due to tails contribution (outliers)

    • For endcap region (PGen > 200 GeV or |EtaGen| > 1.4)

      RMS are close if no outliers

    • For central region (PGen < 130 GeV or |EtaGen| < 0.8)

      RMS(PtMurec-PtGen) > RMS(PtRec-PtGen) even when no outliers. Why?

    • The widths should be fitted to be compared, RMS

      are biased by outliers

    • Better to compare 1/Pt (less spread, D.Acosta)


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