scholarly journals Quark and Gluon Spin Dependent GPDs in a Flexible Spectator Model for Deeply Virtual Lepton Scattering Processes

2018 ◽  
Author(s):  
Gary R. Goldstein ◽  
Simonetta Liuti ◽  
O.J. Gonzalez-Hernandez
Keyword(s):  
Gluon Spin ◽  
Spectator Model

scholarly journals Gluon spin in a quark model

1998 ◽  
Vol 431 (3-4) ◽  
pp. 405-409 ◽  
Author(s):  
V. Barone ◽  
T. Calarco ◽  
A. Drago
Keyword(s):  
Quark Model ◽  
Gluon Spin

Participant–Spectator Model for Fragmentation Reactions with Halo Nuclei

2003 ◽  
Vol 18 (2-4) ◽  
pp. 203-208
Author(s):  
D.V. Fedorov ◽  
A.S. Jensen ◽  
E. Garrido
Keyword(s):  
Halo Nuclei ◽  
Fragmentation Reactions ◽  
Spectator Model

scholarly journals The gluon spin in the chiral bag model

2000 ◽  
Vol 491 (3-4) ◽  
pp. 257-262 ◽  
Author(s):  
Hee-Jung Lee ◽  
Dong-Pil Min ◽  
Byung-Yoon Park ◽  
Mannque Rho ◽  
Vicente Vento
Keyword(s):  
Bag Model ◽  
Gluon Spin

scholarly journals PHYSICS OF GLUON HELICITY

2014 ◽  
Vol 25 ◽  
pp. 1460028
Author(s):  
XIANGDONG JI ◽  
YONG ZHAO
Keyword(s):  
Matrix Element ◽  
Time Correlation ◽  
Spin Operator ◽  
Large Momentum ◽  
Time Correlation Functions ◽  
Gauge Invariant ◽  
Equal Time ◽  
Polarized Proton ◽  
Gluon Spin ◽  
Gluon Helicity

The total gluon helicity in a polarized proton is shown to be a matrix element of a gauge-invariant but nonlocal, frame-dependent gluon spin operator [Formula: see text] in the large momentum limit. The operator [Formula: see text] is fit for the calculation of the total gluon helicity in lattice QCD. This calculation also implies that parton physics can be studied through the large momentum limit of frame-dependent, equal-time correlation functions of quarks and gluons.

scholarly journals Autoionization of the Ca 2p53d core resonances: Breakdown of the spectator model

1989 ◽  
Vol 39 (8) ◽  
pp. 4319-4322 ◽  
Author(s):  
M. Meyer ◽  
E. v. Raven ◽  
M. Richter ◽  
B. Sonntag ◽  
R. D. Cowan ◽  
...  
Keyword(s):  
The Spectator ◽  
Spectator Model
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