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--- phase2:experts [2015/01/27 10:26] – decosa
+++ phase2:experts [2015/01/28 09:42] (current) – dsalerno
@@ Line 42: / Line 42: @@
   * [[phase2:material|double material]]
   * [[phase2:Tracker resolution|change tracker layout]]
+  * [[phase2:Different Scenarios|DifferentScenarios]]
+  * [[phase2:modules|titled modules]]
 Comparison of different scenarios
@@ Line 72: / Line 74: @@
 B-jet ID (Yong+Thea):
+[[phase2:bJetVariabledist|b-jet variable distributions]]
 )   Are we treating the sign of the impact parameter in the tagger the correct way ?
@@ Line 88: / Line 92: @@
 Jet-ID (Andreas):
+[[phase2:jetresolution|Jet resolution]]
 ) Is particle flow being used in the jet energy calculation ?
@@ Line 99: / Line 105: @@
 ) What is the eta distribution of the 4 jets from HH -> bb decay ?
+{{:phase2:bjet_eta.pdf|}}
 ) What is the eta distribution of the most central jet ?  The second
 most central jet ? The third most central jet ?  The most forward jet ?
+Most central jet:
+{{:phase2:bjet_eta_first.pdf|}}
+Second most central jet:
+{{:phase2:bjet_eta_second.pdf|}}
+Third most central jet:
+{{:phase2:bjet_eta_third.pdf|}}
+Most forward jet:
+{{:phase2:bjet_eta_fourth.pdf|}}
 ) From (2) above, can we define eta regions we are most interested in
@@ Line 108: / Line 129: @@
 ) What is the median track PT in the most central jet ? The second
 most central jet ? The third most central jet ?  The most forward jet ?
+Median track PT in most central jet:
+{{:phase2:bjetptmedian_eta_first.pdf|}}
+Median track PT in second most central jet:
+{{:phase2:bjetptmedian_eta_second.pdf|}}
+Median track PT in third most central jet:
+{{:phase2:bjetptmedian_eta_third.pdf|}}
+Median track PT in most forward jet:
+{{:phase2:bjetptmedian_eta_fourth.pdf|}}
 ) From (4) above, can we define track PT regions that we are most interested
@@ Line 130: / Line 164: @@
 )  what is the effect on resolution of doubling the material in the pixel material configuration
 by just doubling the mass of all the components ?
+Resolutions degrade (look at "double material" page ).
 )  what is the effect if we instead approximate the doubling of the material by
@@ Line 136: / Line 172: @@
 resolution (10 times bigger).
-)  Are (3) and (4) consistent ?
+Resolutions degrade in this case as well, but less wrt the previous solution (look at "double material" page ).
+)  Are (3) and (4) consistent ?
+They are not consistent, it is better to have a thicker sensor with respect to having heavier component material.
 )  * Can we implement tilted pixel modules - perhaps in the FPIX region ?
 There are examples on how to do this in Mersi’s private area.
+Possible for the barrel, not possible for the end cap. See page "titled modules".
@@ Line 183: / Line 225: @@
 to charm jets and light jets and b-jet id to b-jets.   For HH->bbbb, run over QCD sample, and apply
 b-jet, charm-jet, light jet b-tag parametrizations.
+============= Exciting observations ==============
+Everyone can add your observations here :
+ * To b-tag all 4 jets in HH->bbb @ 95% (?) efficiency, we need to consider b-tagging out to Eta < 4  (Ben)
+) TEST
+Check efficiency at parton level cutting on |eta| < 1, |eta| < 2, |eta| < 3:
+First most central parton:
+{{:phase2:effparton_first.pdf|}}
+Second most central parton:
+{{:phase2:effparton_second.pdf|}}
+Third most central parton:
+{{:phase2:effparton_third.pdf|}}
+Most forward parton:
+{{:phase2:effparton_fourth.pdf|}}

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