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DIFFRACTION 2012, Lanzarote, Canary Islands, Spain

DIFFRACTION 2012, Lanzarote, Canary Islands, Spain

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t >1 GeV 2 : asymmetric t-distributions as<br />

a tool for evaluating bgd at high t<br />

schematic view of fiber tracker<br />

25 mm<br />

t-distributions<br />

7.5 mm<br />

12.5 mm<br />

x<br />

2.5 mm<br />

Y<br />

p p<br />

• •<br />

2 mm<br />

Y = 7.5 mm<br />

bgnd =<br />

20 evts/GeV 2<br />

‣ tracker’s upper edge: |t|=2.3 GeV 2 , estimated from t~q 2<br />

‣ the lower edge is at |t|= 6.5 GeV 2 (not shown)<br />

‣ background level: region of Y track >Y o data for |t|>2.3 GeV 2<br />

Diffraction <strong>2012</strong> <strong>Lanzarote</strong> Diffractive Dijet Production at CDF K. Goulianos<br />

17

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