/usr/include/ThePEG/Cuts/ is in libthepeg-dev 1.8.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/ThePEG/Cuts/Cuts.fh
/usr/include/ThePEG/Cuts/Cuts.h
/usr/include/ThePEG/Cuts/DeltaMeasureCuts.h
/usr/include/ThePEG/Cuts/JetFinder.h
/usr/include/ThePEG/Cuts/KTClus.h
/usr/include/ThePEG/Cuts/KTRapidityCut.h
/usr/include/ThePEG/Cuts/MultiCutBase.fh
/usr/include/ThePEG/Cuts/MultiCutBase.h
/usr/include/ThePEG/Cuts/NLOKTJetFinder.h
/usr/include/ThePEG/Cuts/OneCutBase.fh
/usr/include/ThePEG/Cuts/OneCutBase.h
/usr/include/ThePEG/Cuts/SimpleDISCut.h
/usr/include/ThePEG/Cuts/SimpleKTCut.h
/usr/include/ThePEG/Cuts/TwoCutBase.fh
/usr/include/ThePEG/Cuts/TwoCutBase.h
/usr/include/ThePEG/Cuts/V2LeptonsCut.h