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Title: Frame dependence of form factors in light-front dynamics

Abstract

In light-front dynamics, form factors are traditionally computed with the “good current” J + within the Drell-Yan frame q + = 0 . Due to truncations imposed in practical calculations, the from factor may acquire frame dependence, which is often neglected. In this work, we explore the form factors in more general frames, preserving the boost covariance. We find the frame dependence of the elastic form factors for mesons is small in basis light-front holography and related models with two-body Fock space truncation. We suggest to use the difference between form factor results from Drell-Yan frame and the “longitudinal frame” as a metric for the violation of the Lorentz symmetry due to Fock space truncation.

Authors:
; ;
Publication Date:
Research Org.:
College of William and Mary, Williamsburg, VA (United States); Iowa State Univ., Ames, IA (United States); Univ. of North Carolina, Chapel Hill, NC (United States); Univ. of Tennessee, Knoxville, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1430381
Alternate Identifier(s):
OSTI ID: 1498958
Grant/Contract Number:  
FG02-87ER40371; FG02-04ER41302; SC0018223; SC0015376
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 97 Journal Issue: 5; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Li, Yang, Maris, Pieter, and Vary, James P. Frame dependence of form factors in light-front dynamics. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.97.054034.
Li, Yang, Maris, Pieter, & Vary, James P. Frame dependence of form factors in light-front dynamics. United States. doi:10.1103/PhysRevD.97.054034.
Li, Yang, Maris, Pieter, and Vary, James P. Thu . "Frame dependence of form factors in light-front dynamics". United States. doi:10.1103/PhysRevD.97.054034.
@article{osti_1430381,
title = {Frame dependence of form factors in light-front dynamics},
author = {Li, Yang and Maris, Pieter and Vary, James P.},
abstractNote = {In light-front dynamics, form factors are traditionally computed with the “good current” J+ within the Drell-Yan frame q+ = 0 . Due to truncations imposed in practical calculations, the from factor may acquire frame dependence, which is often neglected. In this work, we explore the form factors in more general frames, preserving the boost covariance. We find the frame dependence of the elastic form factors for mesons is small in basis light-front holography and related models with two-body Fock space truncation. We suggest to use the difference between form factor results from Drell-Yan frame and the “longitudinal frame” as a metric for the violation of the Lorentz symmetry due to Fock space truncation.},
doi = {10.1103/PhysRevD.97.054034},
journal = {Physical Review D},
number = 5,
volume = 97,
place = {United States},
year = {2018},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.97.054034

Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

Figures / Tables:

FIG. 1. FIG. 1. : LFWF representation of the hadron matrix element. The double-lines represent the hadrons. The solid lines represent the partons. The wavy lines represent the probing photon. The shaded areas represent the LFWFs. These diagrams are ordered by light-front time x+, which flows from left to right. The parton-number-nonconservingmore » contributions (b) stem from pair production/annihilation.« less

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Works referenced in this record:

Phenomenological Model for the Electromagnetic Structure of the Proton
journal, May 1970


Anomalous magnetic moment and limits on fermion substructure
journal, November 1980


Pion and kaon elastic form factors in a refined light-front model
journal, September 2012


The electromagnetic form factor of the pion
journal, August 1974


Exact light-cone wavefunction representation of matrix elements of electroweak currents
journal, March 1999


Pseudoscalar mesons with symmetric bound state vertex functions on the light front
journal, August 2015


Quantum chromodynamics and other field theories on the light cone
journal, August 1998


Light-front Bethe-Salpeter equation
journal, March 2000


Chiral symmetry in light-front QCD
journal, April 2004


Nonperturbative light-front Hamiltonian methods
journal, September 2016


Diffractive charmonium spectrum in high energy collisions in the basis light-front quantization approach
journal, June 2017


The pion electromagnetic structure with self-energy
journal, April 2016


The applicability of perturbative QCD to exclusive processes
journal, May 1989


Nonperturbative solution of scalar Yukawa model in two- and three-body Fock space truncations
journal, November 2016


Quarkonium as a relativistic bound state on the light front
journal, July 2017


Heavy quarkonium in a holographic basis
journal, July 2016


Dynamical vertex mass generation and chiral symmetry breaking on the light front
journal, October 1998


Soft charge form factor of the pion
journal, July 1992


Mesonic form factors and the Isgur-Wise function on the light front
journal, February 1997


Advances in solving the two-fermion homogeneous Bethe-Salpeter equation in Minkowski space
journal, October 2016


Fermionic bound states in Minkowski space: light-cone singularities and structure
journal, November 2017


Non-perturbative Calculation of the Scalar Yukawa Theory in Four-Body Truncation
journal, March 2015


Basis Light-Front Quantization: Recent Progress and Future Prospects
journal, May 2016


Quantum Electrodynamics and Renormalization Theory in the Infinite-Momentum Frame
journal, December 1973

  • Brodsky, Stanley J.; Roskies, Ralph; Suaya, Roberto
  • Physical Review D, Vol. 8, Issue 12
  • DOI: 10.1103/PhysRevD.8.4574

Broken chiral symmetry on a null plane
journal, October 2013


Nonvanishing zero modes in the light-front current
journal, September 1998


A light-front coupled-cluster method for the nonperturbative solution of quantum field theories
journal, May 2012


Solving the Bethe-Salpeter equation for scalar theories in Minkowski space
journal, June 1995


End-point singularities of Feynman graphs on the light cone
journal, March 2003


Bound state equation for the Nakanishi weight function
journal, June 2017


Pion Radius and Isovector Nucleon Radii in the Limit of Small Pion Mass
journal, November 1972


Solving Bethe-Salpeter equation in Minkowski space
journal, January 2006


Light-front holographic QCD and emerging confinement
journal, July 2015


Quark-photon vertex and the pion charge radius
journal, March 2000


Connection of Elastic Electromagnetic Nucleon Form Factors at Large Q 2 and Deep Inelastic Structure Functions Near Threshold
journal, January 1970


The pion wave function in covariant light-front dynamics: Application to the calculation of various physical observables
journal, February 2011


(3+1)-dimensional light-front model with spontaneous breaking of chiral symmetry
journal, May 1997


Ab initio approach to the non-perturbative scalar Yukawa model
journal, September 2015


Spin effects in the pion holographic light-front wavefunction
journal, April 2017


Bethe–Salpeter bound-state structure in Minkowski space
journal, August 2016


Explicitly covariant light-front dynamics and relativistic few-body systems
journal, July 1998


Minkowski space pion model inspired by lattice QCD running quark mass
journal, March 2017


Basis light-front quantization approach to positronium
journal, May 2015


Euclidean to Minkowski Bethe–Salpeter amplitude and observables
journal, January 2017


    Works referencing / citing this record:

    Pion and kaon parton distribution functions from basis light front quantization and QCD evolution
    journal, February 2020


      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.