Contribution to a conference proceedings/Journal Article

PUBDB-2022-03241

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Decomposition of the proton spin from lattice QCD

Hadjiyiannakou, K. (Corresponding author) ; Alexandrou, C. ; Bacchio, S. ; Constantinou, M. ; Finkenrath, J. ; Jansen, K.DESY* ; Koutsou, G. ; Panagopoulos, H. ; Spanoudes, G.

2022
SISSA Trieste

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Please use a persistent id in citations: doi:10.22323/1.396.0348  doi:10.3204/PUBDB-2022-03241

Abstract: The gluon and quark contributions to the proton spin are computed using an ensemble of gauge configurations with twisted mass Wilson fermions with masses tuned to approximately reproduce their physical values. A non-perturbative renormalization is carried out for both quark and gluon matrix elements. The contribution of up, down, strange and charm quarks to the proton intrinsic spin, orbital angular momentum and angular momentum are determined. All scale and scheme dependent quantities are given in the $\mathrm{ \overline{MS}}$ scheme at 2~GeV.

Keyword(s): p, spin ; renormalization, nonperturbative ; mass, twist ; fermion, Wilson ; quark ; gluon ; angular momentum ; GeV ; lattice field theory ; charm

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Contributing Institute(s):

1. NIC (ZEU-NIC)
2. Zeuthen Particle PhysicsTheory (Z_ZPPT)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2022

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Database coverage:
; ; ; ; DOAJ Seal ; SCOPUS

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