[Color_transp] [EXTERNAL] tracking efficiency and hcana's InsideDipoleExit branch

[John Matter]

Hi all,

hcana uses the golden track's info to set InsideDipoleExit to true or
false. See the lines around 655 in the link below

https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_johnmatter_hcana_blob_59652700d08f10949e0d9b399ff4f70ddc9debf5_src_THcDC.cxx-23L655&d=DwIBaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=XtVl8BY42jbbWh0Vu1ygqgFBYEJMENirtKAh3P_9ayw&m=kF3mY6QmwY_-Rg5eY5m6mmZxjdJEPeVOPJS_SEMYkf4&s=9v81oaJV1KKk1V6RphcE43IB39Bf34QS_UAhcXzlQb0&e= 

InsideDipoleExit is initialized to true on line 512. So using
"inside==true" in the "should" cut fortunately won't exclude ntrack==0
events from the "should" count.

However, it will exclude some events (ntrack>0 events with golden tracks
outside the dipole exit) from both the "should" and "did" counts. Is this
what we want?

- John
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