%0 Journal Article
%A Alexandrou, Constantia
%A Bacchio, Simone
%A Bergner, Georg
%A Finkenrath, Jacob
%A Gasbarro, Andrew
%A Hadjiyiannakou, Kyriakos
%A Jansen, Karl
%A Kostrzewa, Bartosz
%A Ottnad, Konstantin
%A Petschlies, Marcus
%A Pittler, Ferenc
%A Steffens, Fernanda
%A Urbach, Carsten
%A Wenger, Urs
%T Quark and Gluon Momentum Fractions in the Pion from N<sub>f</sub>=2+1+1 Lattice QCD
%J Physical review letters
%V 127
%N 25
%@ 0031-9007
%C College Park, Md.
%I APS
%M PUBDB-2021-05530
%M arXiv:2109.10692
%P 252001
%D 2021
%X We perform the first full decomposition of the pion momentum into its gluon and quark contributions. We employ an ensemble generated by the Extended Twisted Mass Collaboration with N<sub>f</sub>=2+1+1 Wilson twisted mass clover fermions at maximal twist tuned to reproduce the physical pion mass. We present our results in the ―MS scheme at 2 GeV. We find ⟨x⟩<sub>u+d</sub>=0.601(28), ⟨x⟩<sub>s</sub>=0.059(13), ⟨x⟩<sub>c</sub>=0.019(05), and ⟨x⟩<sub>g</sub>=0.52(11) for the separate contributions, respectively, whose sum saturates the momentum sum rule.
%K mass: twist (INSPIRE)
%K gluon: momentum (INSPIRE)
%K fermion: clover (INSPIRE)
%K pi: mass (INSPIRE)
%K sum rule: momentum (INSPIRE)
%K pi: momentum (INSPIRE)
%K quark (INSPIRE)
%K lattice field theory (INSPIRE)
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 35029455
%U <Go to ISI:>//WOS:000731420800002
%R 10.1103/PhysRevLett.127.252001
%U https://bib-pubdb1.desy.de/record/473191