/usr/include/ThePEG/PDF/ is in libthepeg-dev 1.8.0-1.
This file is owned by root:root, with mode 0o755.
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/usr/include/ThePEG/PDF/BeamParticleData.h
/usr/include/ThePEG/PDF/BeamParticleData.xh
/usr/include/ThePEG/PDF/BudnevPDF.h
/usr/include/ThePEG/PDF/GRV94L.h
/usr/include/ThePEG/PDF/GRV94M.h
/usr/include/ThePEG/PDF/GRVBase.h
/usr/include/ThePEG/PDF/LHAPDF.h
/usr/include/ThePEG/PDF/LeptonLeptonPDF.h
/usr/include/ThePEG/PDF/NoPDF.h
/usr/include/ThePEG/PDF/NoRemnants.h
/usr/include/ThePEG/PDF/PDF.fh
/usr/include/ThePEG/PDF/PDF.h
/usr/include/ThePEG/PDF/PDFBase.h
/usr/include/ThePEG/PDF/PDFBase.xh
/usr/include/ThePEG/PDF/PDFCuts.h
/usr/include/ThePEG/PDF/PartonBin.fh
/usr/include/ThePEG/PDF/PartonBin.h
/usr/include/ThePEG/PDF/PartonBinInstance.h
/usr/include/ThePEG/PDF/PartonExtractor.fh
/usr/include/ThePEG/PDF/PartonExtractor.h
/usr/include/ThePEG/PDF/PartonExtractor.xh
/usr/include/ThePEG/PDF/PolarizedBeamParticleData.fh
/usr/include/ThePEG/PDF/PolarizedBeamParticleData.h
/usr/include/ThePEG/PDF/RemnantHandler.h
/usr/include/ThePEG/PDF/RemnantHandler.xh
/usr/include/ThePEG/PDF/SoftRemnantHandler.h
/usr/include/ThePEG/PDF/UnResolvedRemnant.h
/usr/include/ThePEG/PDF/WeizsackerWilliamsPDF.h