From 494cfbb0e2b099d6f1f35c64f23943f23dc54dbd Mon Sep 17 00:00:00 2001
From: Alexander Voigt <Alexander.Voigt@physik.rwth-aachen.de>
Date: Sun, 3 Jun 2018 13:22:38 +0200
Subject: [PATCH] correcting 4-loop beta function also in pre-generated SM
 class

---
 model_specific/SM/standard_model.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/model_specific/SM/standard_model.cpp b/model_specific/SM/standard_model.cpp
index 1425d6209..083836f75 100644
--- a/model_specific/SM/standard_model.cpp
+++ b/model_specific/SM/standard_model.cpp
@@ -1557,7 +1557,8 @@ Eigen::Matrix<double,3,3> Standard_model::calc_beta_Yu_four_loop(const Beta_trac
 
    Eigen::Matrix<double,3,3> beta_Yu;
 
-   beta_Yu = (1154.09*PROJECTOR*Power8(g3)*Quad(oneOver16PiSqr)).real();
+   beta_Yu = (2308.18*PROJECTOR*Power8(g3)*Quad(oneOver16PiSqr)*Yu(2,2))
+      .real();
 
    return beta_Yu;
 }