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scaling ttgamma xsec by NLO k-factor #61

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scaling ttgamma xsec by NLO k-factor #61

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5 changes: 3 additions & 2 deletions topcoffea/params/xsec.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -34,8 +34,9 @@ TTG : 3.697
TTGJets : 3.697

# For the dileptonic and semileptonic ttgamma xsecs, use the LO xsec from the gridpacks
TTGamma_Dilept : 1.513
TTGamma_SingleLept : 5.121
# As done in TOP-21-004, the LO xsec is scaled by an NLO k-factor of 1.4852
TTGamma_Dilept : 2.2471 # 1.513 * 1.4852
TTGamma_SingleLept : 7.6057 # 5.121 * 1.4852

# The most up to date ttW xsec is from JHEP 11 (2021) 29: (1-0.6741)*0.722
TTWJetsToLNu : 0.23529979999999998
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