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Pixel Phase I - CA - improving fake rejection at high pt #16612

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merged 3 commits into from Nov 23, 2016
Merged

Pixel Phase I - CA - improving fake rejection at high pt #16612

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614005e
improving fake rejection at high pt
felicepantaleo Nov 7, 2016
d36b1fa
actually doing the square of the projection
felicepantaleo Nov 22, 2016
c9758c1
actually doing the square of the projection
felicepantaleo Nov 22, 2016
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11 changes: 10 additions & 1 deletion RecoPixelVertexing/PixelTriplets/plugins/CACell.h
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Expand Up @@ -168,7 +168,16 @@ class CACell {
float tan_12_13_half_mul_distance_13_squared = fabs(y1 * (x2 - x3) + y2 * (x3 - x1) + y3 * (x1 - x2)) ;
if(tan_12_13_half_mul_distance_13_squared * ptmin <= 1.0e-4f*distance_13_squared)
{
return true;

float distance_3_beamspot_squared = (x3-region_origin_x) * (x3-region_origin_x) + (y3-region_origin_y) * (y3-region_origin_y);

float dot_bs3_13 = ((x1 - x3)*( region_origin_x - x3) + (y1 - y3) * (region_origin_y-y3));
float proj_bs3_on_13_squared = dot_bs3_13*dot_bs3_13/distance_13_squared;

float distance_13_beamspot_squared = distance_3_beamspot_squared - proj_bs3_on_13_squared;

if(distance_13_beamspot_squared > (region_origin_radius+phiCut)*(region_origin_radius+phiCut) )
return false;

}

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