Alexandrou, Constantia; Bacchio, Simone; Bergner, Georg; Finkenrath, Jacob; Gasbarro, Andrew; Hadjiyiannakou, Kyriakos; Jansen, Karl; Kostrzewa, Bartosz; Ottnad, Konstantin; Petschlies, Marcus; Pittler, Ferenc; Steffens, Fernanda; Urbach, Carsten; Wenger, Urs (2021). Quark and Gluon Momentum Fractions in the Pion from N f = 2 + 1 + 1 Lattice QCD. Physical review letters, 127(25), p. 252001. American Physical Society 10.1103/PhysRevLett.127.252001
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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)u+d = 0.601 (28), (x)s = 0.059 (13), (x)c = 0.019 (05), and (x)g =0.52 (11) for the separate contributions, respectively, whose sum saturates the momentum sum rule.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Institute of Theoretical Physics |
UniBE Contributor: |
Gasbarro, Andrew David, Wenger, Urs |
Subjects: |
500 Science > 530 Physics |
ISSN: |
0031-9007 |
Publisher: |
American Physical Society |
Language: |
English |
Submitter: |
Binia Marti |
Date Deposited: |
09 Mar 2022 14:08 |
Last Modified: |
05 Dec 2022 16:09 |
Publisher DOI: |
10.1103/PhysRevLett.127.252001 |
PubMed ID: |
35029455 |
ArXiv ID: |
2109.10692 |
BORIS DOI: |
10.48350/165858 |
URI: |
https://boris.unibe.ch/id/eprint/165858 |
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