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Quark and Gluon Momentum Fractions in the Pion from Nf=2+1+1 Lattice QCD

Physical Review Letters (2021) 127(25)
DOI: 10.1103/PhysRevLett.127.252001
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Abstract

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 Nf=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

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Alexandrou, C., Bacchio, S., Bergner, G., Finkenrath, J., Gasbarro, A., Hadjiyiannakou, K., … Wenger, U. (2021). Quark and Gluon Momentum Fractions in the Pion from Nf=2+1+1 Lattice QCD. Physical Review Letters, 127(25). https://doi.org/10.1103/PhysRevLett.127.252001

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