scholarly journals Tomography of light mesons in the light-cone quark model

2020 ◽  
Vol 102 (1) ◽  
Author(s):  
Satvir Kaur ◽  
Narinder Kumar ◽  
Jiangshan Lan ◽  
Chandan Mondal ◽  
Harleen Dahiya
Keyword(s):  
Quark Model ◽  
Light Cone ◽  
Light Mesons

scholarly journals Light-cone distribution amplitudes of light mesons with QED effects

2021 ◽  
Vol 2021 (11) ◽  
Author(s):  
Martin Beneke ◽  
Philipp Böer ◽  
Jan-Niklas Toelstede ◽  
K. Keri Vos
Keyword(s):  
Light Cone ◽  
Electromagnetic Coupling ◽  
First Order ◽  
Order Expansion ◽  
Group Evolution ◽  
Fixed Order ◽  
Light Mesons ◽  
Charged Mesons ◽  
Qed Effects ◽  
Exclusive Processes

Abstract We discuss the generalization of the leading-twist light-cone distribution amplitude for light mesons including QED effects. This generalization was introduced to describe virtual collinear photon exchanges at the strong-interaction scale ΛQCD in the factorization of QED effects in non-leptonic B-meson decays. In this paper we study the renormalization group evolution of this non-perturbative function. For charged mesons, in particular, this exhibits qualitative differences with respect to the well-known scale evolution in QCD only, especially regarding the endpoint-behaviour. We analytically solve the evolution equation to first order in the electromagnetic coupling αem, which resums large logarithms in QCD on top of a fixed-order expansion in αem. We further provide numerical estimates for QED corrections to Gegenbauer coefficients as well as inverse moments relevant to (QED-generalized) factorization theorems for hard exclusive processes.

Magnetic moments of the nucleon octet in a relativistic light-cone quark model

1988 ◽  
Vol 200 (4) ◽  
pp. 539-542 ◽  
Author(s):  
Zbigniew Dziembowski ◽  
Tomasz Dzurak ◽  
Adam Szczepaniak ◽  
Lech Mankiewicz
Keyword(s):  
Quark Model ◽  
Light Cone ◽  
Magnetic Moments

scholarly journals TMDs and Azimuthal Spin Asymmetries in a Light-Cone Quark Model

2009 ◽  
Author(s):  
B. Pasquini ◽  
S. Boffi ◽  
A. V. Efremov ◽  
P. Schweitzer ◽  
Donald G. Crabb ◽  
...  
Keyword(s):  
Quark Model ◽  
Light Cone ◽  
Spin Asymmetries

scholarly journals Study of kaon structure using the light-cone quark model

2019 ◽  
Vol 100 (7) ◽  
Author(s):  
Satvir Kaur ◽  
Harleen Dahiya
Keyword(s):  
Quark Model ◽  
Light Cone
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