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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:
 [1];  [2];  [2]
  1. College of William and Mary, Williamsburg, VA (United States). Dept. of Physics; Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
  2. Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
COLLEGE OF WILLIAM & MARY, THE; IOWA STATE UNIVERSITY OF SCIENCE AND TECHNOLOGY; University of North Carolina at Chapel Hill; Univ. of Tennessee, Knoxville, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1430381
Alternate Identifier(s):
OSTI ID: 1498958
Grant/Contract Number:  
FG02-04ER41302; FG02-87ER40371; SC0015376; SC0018223
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 97; Journal Issue: 5; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
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},
issn = {2470-0010},
number = 5,
volume = 97,
place = {United States},
year = {2018},
month = {3}
}

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

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

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