scholarly journals Studying twist-2 GPDs through quasi-distributions in a scalar diquark model

2019 ◽  
Author(s):  
Shohini Bhattacharya ◽  
Christopher Cocuzza ◽  
Andreas Metz
Keyword(s):  
Diquark Model ◽  
Scalar Diquark

scholarly journals Study of Twist-2 GTMDs in Scalar-Diquark Model

2018 ◽  
Vol 59 (4) ◽  
Author(s):  
Satvir Kaur ◽  
Harleen Dahiya
Keyword(s):  
Diquark Model ◽  
Scalar Diquark

scholarly journals Orbital Angular Momentum in Scalar Diquark Model and QED

2011 ◽  
Vol 52 (3-4) ◽  
pp. 389-395 ◽  
Author(s):  
Hikmat BC ◽  
Matthias Burkardt
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Diquark Model ◽  
Scalar Diquark

scholarly journals The angular momentum decomposition in the scalar diquark model.

2019 ◽  
Author(s):  
Arturo Amor-Quiroz ◽  
Matthias Burkardt ◽  
Cedric Lorce
Keyword(s):  
Angular Momentum ◽  
Diquark Model ◽  
Scalar Diquark

scholarly journals Potential linear and angular momentum in the scalar diquark model

2021 ◽  
Vol 81 (7) ◽  
Author(s):  
David Arturo Amor-Quiroz ◽  
Matthias Burkardt ◽  
William Focillon ◽  
Cédric Lorcé
Keyword(s):  
Angular Momentum ◽  
Transverse Momentum ◽  
Direct Calculation ◽  
Final State ◽  
Diquark Model ◽  
Scalar Diquark ◽  
Angular Momenta ◽  
The Difference ◽  
Definition Of ◽  
Quark Transverse Momentum

AbstractWe present an analytic two-loop calculation within the scalar diquark model of the potential linear and angular momenta, defined as the difference between the Jaffe-Manohar and Ji notions of linear and angular momenta. As expected by parity and time-reversal symmetries, a direct calculation confirms that the potential transverse momentum coincides with the Jaffe-Manohar (or canonical) definition of average quark transverse momentum, also known as the quark Sivers shift. We examine whether initial/final-state interactions at the origin of the Sivers asymmetry can also generate a potential angular momentum in the scalar diquark model.

STRUCTURE FUNCTIONS OF THE NUCLEON IN THE QUARK–DIQUARK MODEL AND EXTENSION TO FINITE DENSITY

2003 ◽  
Vol 18 (08) ◽  
pp. 1413-1416
Author(s):  
H. MINEO ◽  
W. BENTZ ◽  
K. YAZAKI ◽  
A. W. THOMAS
Keyword(s):  
Wave Function ◽  
Light Cone ◽  
Valence Quark ◽  
Axial Vector ◽  
Diquark Model ◽  
Finite Density ◽  
Scalar Diquark ◽  
Njl Model ◽  
Momentum Distributions ◽  
Extract Information

In this work we use a simple approximation to the relativistic Faddeev description of the nucleon in the framework of the Nambu-Jona-Lasinio (NJL) model. We discuss the flavor dependence of valence quark light-cone momentum distributions, and by comparing with the empirical informations we extract information on the strength of the axial vector diquark correlations. As an extension to finite density, we also discuss the EMC effect in nuclear matter, keeping only the scalar diquark channel in the wave function.

scholarly journals Hidden charm tetraquark states in a diquark model

2021 ◽  
Vol 103 (9) ◽  
Author(s):  
Pan-Pan Shi ◽  
Fei Huang ◽  
Wen-Ling Wang
Keyword(s):  
Diquark Model

scholarly journals A study on P c * (4380) and P c * in the quasi particle diquark model

2017 ◽  
Vol 14 (4) ◽  
pp. 550-552 ◽  
Author(s):  
R. Ghosh ◽  
A. Bhattacharya ◽  
B. Chakrabarti
Keyword(s):  
Diquark Model ◽  
Quasi Particle

RETARDATION EFFECTS IN COVARIANT THREE-DIMENSIONAL BOUND STATE WAVE FUNCTIONS

2005 ◽  
Vol 14 (06) ◽  
pp. 931-947 ◽  
Author(s):  
F. PILOTTO ◽  
M. DILLIG
Keyword(s):  
Bound States ◽  
Three Dimensional ◽  
Bound State ◽  
Relative Energy ◽  
Wave Functions ◽  
Three Dimensions ◽  
State Wave ◽  
Scalar Diquark ◽  
Bound State Wave Function ◽  
Retardation Effects

We investigate the influence of retardation effects on covariant 3-dimensional wave functions for bound hadrons. Within a quark-(scalar) diquark representation of a baryon, the four-dimensional Bethe–Salpeter equation is solved for a 1-rank separable kernel which simulates Coulombic attraction and confinement. We project the manifestly covariant bound state wave function into three dimensions upon integrating out the non-static energy dependence and compare it with solutions of three-dimensional quasi-potential equations obtained from different kinematical projections on the relative energy variable. We find that for long-range interactions, as characteristic in QCD, retardation effects in bound states are of crucial importance.

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