scholarly journals Light-cone distribution amplitudes of vector meson in a large momentum effective theory

2018 ◽  
Vol 97 (11) ◽  
Author(s):  
Ji Xu ◽  
Qi-An Zhang ◽  
Shuai Zhao
Keyword(s):  
Vector Meson ◽  
Light Cone ◽  
Effective Theory ◽  
Large Momentum

scholarly journals The Spin Structure of the Nucleon

2016 ◽  
Vol 40 ◽  
pp. 1660001
Author(s):  
Xiangdong Ji ◽  
Yong Zhao
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
Proton Spin ◽  
Effective Theory ◽  
Large Momentum ◽  
Theory Approach ◽  
The One ◽  
The Relationship

We justify the physical meaning of the spin and orbital angular momentum of free partons in the infinite momentum frame, and discuss the relationship between the Jaffe-Manohar and Ji’s sum rules for proton spin. The parton orbital angular momentum in the Jaffe-Manohar sum rule can be measured through twist-three GPD’s in hard scattering processes such as deeply virtual Compton scattering. Furthermore, we propose that the paton orbital angular momentum as well as the gluon helicity can be calculated in lattice QCD through a large momentum effective theory approach, and provide all the one-loop matching conditions for the proton spin content in perturbative QCD.

Proton Spin Structure from Large Momentum Effective Theory

2017 ◽  
pp. 221-226
Author(s):  
Jian-Hui Zhang ◽  
Xiangdong Ji ◽  
Yong Zhao
Keyword(s):  
Spin Structure ◽  
Proton Spin ◽  
Effective Theory ◽  
Large Momentum ◽  
Proton Spin Structure

scholarly journals TESTING THE DYNAMICS OF HIGH ENERGY SCATTERING USING VECTOR MESON PRODUCTION

2004 ◽  
Vol 19 (36) ◽  
pp. 2655-2671 ◽  
Author(s):  
RIKARD ENBERG
Keyword(s):  
Vector Meson ◽  
Meson Production ◽  
High Energy ◽  
Large Momentum ◽  
Energy Limit ◽  
Vector Meson Production ◽  
Proton Collisions ◽  
Energy Scattering ◽  
Rapidity Gap ◽  
High Energy Scattering

I review work on diffractive vector meson production in photon–proton collisions at high energy and large momentum transfer, accompanied by proton dissociation and a large rapidity gap. This process provides a test of the high energy scattering dynamics, but is also sensitive to the details of the treatment of the vector meson vertex.The emphasis is on the description of the process by a solution of the non-forward BFKL equation, i.e. the equation describing the evolution of scattering amplitudes in the high-energy limit of QCD. The formation of the vector meson and the nonperturbative modeling needed is also briefly discussed.

scholarly journals Diffractive vector meson production with a large momentum transfer

2004 ◽  
Vol 33 (S1) ◽  
pp. s512-s514
Author(s):  
Rikard Enberg ◽  
Jeff Forshaw ◽  
Leszek Motyka ◽  
Gavin Poludniowski
Keyword(s):  
Vector Meson ◽  
Momentum Transfer ◽  
Meson Production ◽  
Large Momentum Transfer ◽  
Large Momentum ◽  
Vector Meson Production

scholarly journals Light-cone sum rules in soft-collinear effective theory

2006 ◽  
Vol 733 (1-2) ◽  
pp. 1-30 ◽  
Author(s):  
Fulvia De Fazio ◽  
Thorsten Feldmann ◽  
Tobias Hurth
Keyword(s):  
Light Cone ◽  
Sum Rules ◽  
Effective Theory ◽  
Soft Collinear Effective Theory
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