categories for resolution study categories : eta, energy, number of primary vertices, conversion...
DESCRIPTION
conversion possibility in each eta bin [0, 0.6][0.6, 1.37][1.52, 1.81][1.81,2.37] Unconverted76.75%62.52%53.08%51.89% converted23.25%37.48%46.92%48.11% Leading photon : subleading photon : [0, 0.6][0.6, 1.37][1.52, 1.81][1.81,2.37] Unconverted75.68%63.87%52.11%51.29% converted24.32%36.13%47.89%48.71% Conversion for leading and subleading photon are more or less the sameTRANSCRIPT
Categories for resolution studyCategories : eta , energy , number of primary vertices , conversion should be considered
Eta : barrel – endcap ? or 4 bins like [0, 0.6] , [0.6, 1.37] , [1.52, 1.81] , [1.81, 2.37] ?
Energy : how to define the energy bins ?
Fraction of eta division
Leading[0, 0.6 ]
Leading[0.6, 1.37]
Leading[1.52, 1.81]
Leading[1.81, 2.37]
subleading[0, 0.6 ]
16.36% 16.74% 3.17% 2.51%
subleading[0.6, 1.37 ]
17.61% 16.00% 3.07% 3.85%
subleading[1.52, 1.81 ]
3.27% 3.42% 1.04% 1.54%
subleading[1.81, 2.37 ]
3.31% 4.44% 1.32% 2.23%
Di-photon, tagging as leading and sub-leading
LeadingIn barrel
LeadingIn endcap
Subleading in barrel
66.71% 12.60%
SubleadingIn endcap
14.44% 6.13%
If upper limit of the new MC is around 1,000,000. barrel – endcap division might be a better choice
Also, do we need to tag two photons as leading and subleading in eta category ?
4 eta bins -- [0, 0.6] , [0.6, 1.37] , [1.52, 1.81] , [1.81, 2.37]
barrel / endcap
conversion possibility in each eta bin
[0, 0.6] [0.6, 1.37] [1.52, 1.81] [1.81,2.37]
Unconverted 76.75% 62.52% 53.08% 51.89%
converted 23.25% 37.48% 46.92% 48.11%
Leading photon :
subleading photon :
[0, 0.6] [0.6, 1.37] [1.52, 1.81] [1.81,2.37]
Unconverted 75.68% 63.87% 52.11% 51.29%
converted 24.32% 36.13% 47.89% 48.71%
Conversion for leading and subleading photon are more or less the same
Glance on the resolution at different categories
Resolution parameter comparison categorized by eta
CBsigma CBmean CBalpha CBfrac CBn GAmean GAsigmaB + B * 1.429 119.9 1.232 0.9684 9.847 121.1 4.107B + E 1.483 119.7 1.283 0.7773 4.138 119.3 3.88E + B 1.435 119.7 1.067 0.8399 8.661 120.4 4.411E + E 1.321 119.7 0.9687 0.6775 50.0 119.8 4.51
B + B means: leading photon in barrel and subleading photon in barrel
CBsigma CBmean CBalpha CBfrac CBn GAmean GAsigma
B + B * 1.651 119.9 1.335 0.9631 11.25 121.8 4.36
B + E 1.88 119.7 2.465 0.73 2.723 119.1 4.059
E + B 1.957 119.6 1.441 0.8656 18.07 120.4 4.861
E + E 1.998 119.5 1.608 0.739 40.93 120.4 4.651
Without smearing :
With smearing :
Resolution parameter comparison categorized by E (1)
High E : E of leading Photon > 68 GeV , E of subleading Photon > 68 GeV Low E : E of leading Photon < 68 GeV , E of subleading Photon < 68 GeV
smeared
smeared
High E High E
low E low E
both of the two photons are in barrel
Resolution parameter comparison categorized by E (2)both of the two photons are in barrel and unconverted
High E High E
low E low E
smeared
smeared
High E : E of leading Photon > 68 GeV , E of subleading Photon > 68 GeV
Low E : E of leading Photon < 68 GeV , E of subleading Photon < 68 GeV
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1. Decide the categories of eta and energy ;2. Any other category should be considered ? 3. Estimate the size of new MC asap
Back up
Resolution parameter comparison categorized by eta (2)
Endcap + endcap is not precise enough
smeared