# Difference: BkgHybridJetZ (3 vs. 4)

#### Revision 42015-03-20 - YonghongZhang

Line: 1 to 1

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## Background and Hybrid Spectrum w and w/o background substraction

the first two plots is pure toy background spectrum

the last two plots is hybrid spectrum.

## Background density

the shape of rho distribution like a gauss, after fit with the gauss ,we get the mean value and rms of the shape, on the right is the fit for mean value and rms of rho

<rho>= a*multiplicity density* meanpt +b

a=0.994024 +/- 0.00229552,

b= -0.333886 +/- 0.495517

rms= a*sart(multiplicity density)* meanpt +b

a=0.513158 +/- 0.0647313

b=0.513158 +/- 0.0647313

## Subjet Z distribution with different multiplicity and mean pt in pure background condition

Line: 19 to 43
the down left plot is the mean value of inclusive z depend on jet pt ,the down right plot is the mean value of leading subjet z depend on jet pt.
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## The pt and z difference in leading subjet and sub-leading subjet in pure background condition

Line: 28 to 54
the down left plot is the mean pt difference between leading subjet and subleading subjet and the down right is the mean z difference between leading and subleading subjet.
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## The pt and z difference in leading subjet and sub-leading subjet in Hybrid condition

Line: 71 to 102

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