scholarly journals A non-pertubative effect of gluons for scalar diquark in the Schwinger-Dyson formalism

2014 ◽  
Author(s):  
Shotaro Imai ◽  
Hideo Suganuma
Keyword(s):  
Scalar Diquark

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.

Pseudoscalar meson and scalar-diquark decay constants

1984 ◽  
Vol 81 (2) ◽  
pp. 485-492 ◽  
Author(s):  
I. Bediaga ◽  
A. F. S. Santoro ◽  
M. Souza ◽  
J. Tiomno ◽  
E. Predazzi
Keyword(s):  
Pseudoscalar Meson ◽  
Decay Constants ◽  
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 Analysis of the Pcs(4459) as the hidden-charm pentaquark state with QCD sum rules

2021 ◽  
Vol 36 (10) ◽  
pp. 2150071
Author(s):  
Zhi-Gang Wang
Keyword(s):  
Experimental Data ◽  
Mass Spectrum ◽  
Excellent Agreement ◽  
Mass Formula ◽  
Sum Rules ◽  
Lhcb Collaboration ◽  
Qcd Sum Rules ◽  
Breaking Effect ◽  
Type Formula ◽  
Scalar Diquark

In this paper, we study the scalar-diquark–scalar-diquark–antiquark-type [Formula: see text] pentaquark state with the QCD sum rules, the predicted mass [Formula: see text] is in excellent agreement with the experimental data [Formula: see text] from the LHCb collaboration, and supports assigning the [Formula: see text] to be the hidden-charm pentaquark state with the spin-parity [Formula: see text]. We take into account the flavor [Formula: see text] mass-breaking effect, and estimate the mass spectrum of the diquark–diquark–antiquark-type [Formula: see text] pentaquark states with the strangeness [Formula: see text].

Quark—scalar-diquark mass effects inJψdecays into baryon-antibaryon pairs

1993 ◽  
Vol 47 (9) ◽  
pp. 3967-3976 ◽  
Author(s):  
El-Hassan Kada ◽  
Joseph Parisi
Keyword(s):  
Mass Effects ◽  
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.

scholarly journals Nucleon Parton Distribution Amplitude: A Scalar Diquark Picture

2020 ◽  
pp. 773-781
Author(s):  
Cédric Mezrag ◽  
Jorge Segovia ◽  
Minghui Ding ◽  
Lei Chang ◽  
Craig D. Roberts
Keyword(s):  
Parton Distribution ◽  
Distribution Amplitude ◽  
Scalar Diquark
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