[PWGLF,Trigger] fix definition of DCAToPV (AliceO2Group#10961)

ChiaraDeMartin95 · Chiara De Martin · CesarOmarRA · commit 9bdb069da67f · 2025-07-02T14:24:40.000+02:00
Co-authored-by: Chiara De Martin &lt;chiara.de.martin@cern.ch&gt;
diff --git a/EventFiltering/PWGLF/strangenessFilter.cxx b/EventFiltering/PWGLF/strangenessFilter.cxx
@@ -61,7 +61,7 @@ static const std::vector<std::string> speciesNames{"Xi", "Omega"};
 
 float CalculateDCAStraightToPV(float X, float Y, float Z, float Px, float Py, float Pz, float pvX, float pvY, float pvZ)
 {
-  return std::hypot((pvY - Y) * Pz - (pvZ - Z) * Py, (pvX - X) * Pz - (pvZ - Z) * Px, (pvX - X) * Py - (pvY - Y) * Px) / (Px * Px + Py * Py + Pz * Pz);
+  return std::hypot((pvY - Y) * Pz - (pvZ - Z) * Py, (pvX - X) * Pz - (pvZ - Z) * Px, (pvX - X) * Py - (pvY - Y) * Px) / std::sqrt(Px * Px + Py * Py + Pz * Pz);
 }
 
 struct strangenessFilter {

Original file line number	Diff line number	Diff line change
`@@ -61,7 +61,7 @@ static const std::vector<std::string> speciesNames{"Xi", "Omega"};`
`61`	`61`
`62`	`62`	`float CalculateDCAStraightToPV(float X, float Y, float Z, float Px, float Py, float Pz, float pvX, float pvY, float pvZ)`
`63`	`63`	`{`
`64`		`- return std::hypot((pvY - Y) * Pz - (pvZ - Z) * Py, (pvX - X) * Pz - (pvZ - Z) * Px, (pvX - X) * Py - (pvY - Y) * Px) / (Px * Px + Py * Py + Pz * Pz);`
	`64`	`+ return std::hypot((pvY - Y) * Pz - (pvZ - Z) * Py, (pvX - X) * Pz - (pvZ - Z) * Px, (pvX - X) * Py - (pvY - Y) * Px) / std::sqrt(Px * Px + Py * Py + Pz * Pz);`
`65`	`65`	`}`
`66`	`66`
`67`	`67`	`struct strangenessFilter {`