Question 1 :
Make invariant mass plot (100 bins between 0 and 200 GeV)
for every step of cuts.
You should get 6 plots in total including one before
any cuts applied.
cos_theta*
As stated in the paper, cos_theta* is determined
in the Collis-Soper frame (Phys. Rev. D 16, 2219
(1977)).
please read this paper.
Divide the samle using invariant mass.
sample #1 (Z region) : 75 < M(e,e) < 105 GeV
sample #2 (High mass region) : M(e,e) > 105 GeV
Question 2 :
Fill the following table
Z pole region
High mass region
# of total events
# of forward events
# of backward events
Question 3 :
Make Figure 1(CDF paper) for dimuon
Question 4 :
Make Figure 2(CDF paper) for dimuon
Question 5 :
Fit the previous two plots (Figure 2) with
A (1 + cos^2_theta*) + B cos_theta*, and
get the value A.