# 2010.01.26 Endcap/Barrel clustering with official W-MC

Simulations: official pp 500GeV pythia W production

Two channels being analyzed:

**W+ -> e+ nu**(rcf10010*.root)**W- -> e- nu**(rcf10011*.root)

### Lepton from W in the Endcap: 1.2 < eta_lepton < 1.9

**Figure 1:** Lepton yield vs. energy

**Figure 2:** Lepton (left) **E1x1/E_thrown** and (right) **E2x2/E_thrown** energy ratio

**Skewed gaussian fits**: [const]*exp(-0.5*((x-[mean])/([sigma]*(1+[skewness]*(x-[mean]))))**2)

**Figure 3:** Endcap EMC lepton **E3x3/E_thrown** energy ratio

**Figure 4:** Endcap 2x2 sampling fraction (s.f.) vs. thrown lepton (left) energy and (right) eta

S.f. is defined as an average E_2x2/E_thrown for E_2x2/E_thrown>0.8

**Figure 5:** Endcap 3x3 sampling fraction (s.f.) vs. thrown lepton (left) energy and (right) eta

S.f. is defined as an average E_3x3/E_thrown for E_3x3/E_thrown>0.8

### Lepton from W in the Barrel: |eta_lepton| <1

**Figure 6:** Lepton yield vs. energy

**Figure 7:** Lepton (left) **E1x1/E_thrown** and (right) **E2x2/E_thrown** energy ratio

**Figure 8:** Barrel EMC lepton **E3x3/E_thrown** energy ratio

**Figure 9:** Barrel 2x2 s.f. vs. thrown lepton (left) energy and (right) eta

S.f. is defined as an average E_2x2/E_thrown for E_2x2/E_thrown>0.8

**Figure 10:** Barrel 3x3 s.f. vs. thrown lepton (left) energy and (right) eta

S.f. is defined as an average E_3x3/E_thrown for E_3x3/E_thrown>0.8

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