scholarly journals New relation between transverse angular momentum and generalized parton distributions

2012 ◽  
Vol 85 (5) ◽  
Author(s):  
Elliot Leader
Keyword(s):  
Angular Momentum ◽  
Parton Distributions ◽  
Generalized Parton Distributions

QUARK ORBITAL ANGULAR MOMENTUM AND GENERALIZED PARTON DISTRIBUTIONS

2003 ◽  
Vol 18 (08) ◽  
pp. 1303-1309 ◽  
Author(s):  
XIANGDONG JI
Keyword(s):  
Angular Momentum ◽  
Quantum Chromodynamics ◽  
Orbital Angular Momentum ◽  
Parton Distributions ◽  
Generalized Parton Distributions ◽  
Quark Orbital Angular Momentum

In this talk, I review the merit of introducing and measuring the quark orbital angular momentum contribution to the spin of the nucleon in the context of quantum chromodynamics.

GPDs AND TMDs

2012 ◽  
Vol 20 ◽  
pp. 75-83
Author(s):  
MATTHIAS BURKARDT
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Transverse Plane ◽  
Final State ◽  
Parton Distributions ◽  
Generalized Parton Distributions ◽  
Wigner Distributions ◽  
Quark Orbital Angular Momentum ◽  
Final State Interactions ◽  
The Difference

For transversely polarized nucleons the distribution of quarks in the transverse plane is transversely shifted and that shift can be described in terms of Generalized Parton Distributions (GPDs). This observation provides a 'partonic' derivation of the Ji-relation for the quark angular momentum in terms of GPDs. Wigner distributions are used to show that the difference between the Jaffe-Manohar definiton of quark orbital angular momentum and that of Ji is equal to the change of orbital angular momentum due to the final state interactions as the struck quark leaves the target in a DIS experiment.

scholarly journals Moments of generalized parton distributions and quark angular momentum of the nucleon

2008 ◽  
Author(s):  
Munehisa Ohtani ◽  
Dirk Broemmel ◽  
Meinulf Goeckeler ◽  
Philipp Haegler ◽  
Roger Horsley ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Parton Distributions ◽  
Generalized Parton Distributions

GENERALIZED PARTON DISTRIBUTIONS IN THE CHIRAL ODD SECTOR AND THEIR ROLE IN NEUTRAL MESON ELECTROPRODUCTION

2012 ◽  
Vol 20 ◽  
pp. 222-229 ◽  
Author(s):  
GARY R. GOLDSTEIN ◽  
SIMONETTA LIUTI ◽  
J. OSVALDO GONZALEZ-HERNANDEZ
Keyword(s):  
Angular Momentum ◽  
Momentum Transfer ◽  
Charge Conjugation ◽  
Neutral Meson ◽  
Parton Distributions ◽  
Quantum Numbers ◽  
Generalized Parton Distributions ◽  
Meson Electroproduction

Our original suggestion to investigate exclusive π0 electroproduction as a method for extracting from data the tensor charge, transversity, and other quantities related to chiral odd generalized parton distributions is further examined. We now explain the details of the process: i) the connection between the helicity description and the cartesian basis; ii) the dependence on the momentum transfer squared, Q2, and iii) the angular momentum, parity, and charge conjugation constraints (JPC quantum numbers).

scholarly journals OBSERVATIONS OF CHIRAL ODD GPDs AND THEIR IMPLICATIONS

2014 ◽  
Vol 25 ◽  
pp. 1460035 ◽  
Author(s):  
GARY R. GOLDSTEIN ◽  
SIMONETTA LIUTI ◽  
J. OSVALDO GONZALEZ-HERNANDEZ
Keyword(s):  
Angular Momentum ◽  
Momentum Transfer ◽  
Cross Section ◽  
Charge Conjugation ◽  
Parton Distributions ◽  
Quantum Numbers ◽  
Generalized Parton Distributions ◽  
Asymmetry Data

Our original suggestion to investigate exclusive π0 electroproduction as a method for extracting the tensor charge, transversity, and other quantities related to chiral odd generalized parton distributions from cross section and asymmetry data is reviewed. We explain some of the details of the process: i) the connection between the helicity description and the cartesian basis; ii) the dependence on the momentum transfer squared, Q2, and iii) the angular momentum, parity, and charge conjugation constraints (JPC quantum numbers).

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