From 41a1471425bc64ddcc359d209479bf695900c306 Mon Sep 17 00:00:00 2001
From: Lena Rossel <lena.rossel@stud.uni-frankfurt.de>
Date: Fri, 28 Jul 2023 11:34:41 +0200
Subject: [PATCH] Fix calculation of gamma
Change speed of light to 1.
Momentum and mass are given in GeV, therefore speed of light does not need to be c=3e8.
---
sim/detectors/trd/CbmTrdDigitizer.cxx | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sim/detectors/trd/CbmTrdDigitizer.cxx b/sim/detectors/trd/CbmTrdDigitizer.cxx
index 6e71dfa8be..023069fa2d 100644
--- a/sim/detectors/trd/CbmTrdDigitizer.cxx
+++ b/sim/detectors/trd/CbmTrdDigitizer.cxx
@@ -204,7 +204,7 @@ void CbmTrdDigitizer::Exec(Option_t*)
else
mod = imod->second;
mod->SetLinkId(fCurrentInput, fCurrentMCEntry, iPoint);
- Double_t gamma = TMath::Sqrt(1 + TMath::Power(track->GetP() / (3.e8 * track->GetMass()), 2));
+ Double_t gamma = TMath::Sqrt(1 + TMath::Power(track->GetP() / (track->GetMass()), 2));
mod->SetGamma(gamma);
mod->MakeDigi(point, fCurrentEventTime, TMath::Abs(track->GetPdgCode()) == 11);
}
--
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