[PWGCF] FemtoUniverse: Fixing the bug in phi calculation at R (AliceO2Group#12315)

prchakra · web-flow · commit febce255db1a · 2025-07-30T10:10:13.000+02:00
diff --git a/PWGCF/FemtoUniverse/Core/FemtoUniverseDetaDphiStar.h b/PWGCF/FemtoUniverse/Core/FemtoUniverseDetaDphiStar.h
@@ -580,7 +580,7 @@ class FemtoUniverseDetaDphiStar
     for (size_t i = 0; i < 9; i++) {
       double arg = 0.3 * charge * magfield * TmpRadiiTPC[i] * 0.01 / (2. * pt);
       if (std::abs(arg) < 1.0) {
-        tmpVec.push_back(phi0 - std::asin(arg));
+        tmpVec.push_back(phi0 + std::asin(arg));
       } else {
         tmpVec.push_back(999.0);
       }

Original file line number	Diff line number	Diff line change
`@@ -580,7 +580,7 @@ class FemtoUniverseDetaDphiStar`
`580`	`580`	`for (size_t i = 0; i < 9; i++) {`
`581`	`581`	`double arg = 0.3 * charge * magfield * TmpRadiiTPC[i] * 0.01 / (2. * pt);`
`582`	`582`	`if (std::abs(arg) < 1.0) {`
`583`		`- tmpVec.push_back(phi0 - std::asin(arg));`
	`583`	`+ tmpVec.push_back(phi0 + std::asin(arg));`
`584`	`584`	`} else {`
`585`	`585`	`tmpVec.push_back(999.0);`
`586`	`586`	`}`