From 638cfee1e02b5ff3ad47c47cd2ba9017460b00b0 Mon Sep 17 00:00:00 2001
From: "se.gorbunov" <se.gorbunov@gsi.de>
Date: Fri, 2 Sep 2022 09:45:33 +0000
Subject: [PATCH] L1: minor change in calculation

---
 reco/L1/L1Algo/L1Field.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/reco/L1/L1Algo/L1Field.cxx b/reco/L1/L1Algo/L1Field.cxx
index c3f7bd12f5..aa1766fd6a 100644
--- a/reco/L1/L1Algo/L1Field.cxx
+++ b/reco/L1/L1Algo/L1Field.cxx
@@ -218,7 +218,7 @@ void L1FieldRegion::Set(const L1FieldValue& b0, const fvec b0z, const L1FieldVal
   z0       = b0z;
   fvec dz1 = b1z - b0z;
   fvec dz2 = b2z - b0z;
-  fvec det = rcp(dz1 * dz2 * (dz2 - dz1));
+  fvec det = rcp(dz1 * dz2 * (b2z - b1z));
 
   fvec w21 = -dz2 * det;
   fvec w22 = dz1 * det;
-- 
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