From 31f097575ea9e6bcbff13092b352cc14d6510683 Mon Sep 17 00:00:00 2001
From: scott snyder <snyder@bnl.gov>
Date: Thu, 28 Mar 2024 20:38:02 +0100
Subject: [PATCH] MuonPatternRecognitionTest: Fix compilation with hepmc2.

Fix compilation with hepmc2.
---
 .../MuonPatternRecognitionTest/src/MdtEtaTransformTester.cxx    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MuonSpectrometer/MuonPhaseII/MuonValidation/MuonPatternRecognitionTest/src/MdtEtaTransformTester.cxx b/MuonSpectrometer/MuonPhaseII/MuonValidation/MuonPatternRecognitionTest/src/MdtEtaTransformTester.cxx
index 32f13ba6511f..51cde3618c8a 100644
--- a/MuonSpectrometer/MuonPhaseII/MuonValidation/MuonPatternRecognitionTest/src/MdtEtaTransformTester.cxx
+++ b/MuonSpectrometer/MuonPhaseII/MuonValidation/MuonPatternRecognitionTest/src/MdtEtaTransformTester.cxx
@@ -112,7 +112,7 @@ namespace MuonValR4 {
             /// Global coordinates
             m_out_gen_Eta   = genParticlePtr->momentum().eta();
             m_out_gen_Phi= genParticlePtr->momentum().phi();
-            m_out_gen_Pt= genParticlePtr->momentum().pt();
+            m_out_gen_Pt= genParticlePtr->momentum().perp();
             m_out_gen_nHits = hits.size(); 
             unsigned int nMdt{0}, nRpc{0}, nTgc{0}; 
             for (const xAOD::MuonSimHit* hit : hits){
-- 
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