Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/95089
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Light meson form factors at near physical masses
Author: Owen, B.
Kamleh, W.
Leinweber, D.
Mahbub, M.
Menadue, B.
Citation: Physical Review D, 2015; 91(7):074503-1-074503-15
Publisher: American Physical Society
Issue Date: 2015
ISSN: 1550-7998
1550-2368
Statement of
Responsibility: 
Benjamin J. Owen, Waseem Kamleh, Derek B. Leinweber, M. Selim Mahbub, and Benjamin J. Menadue
Abstract: The ability for most hadrons to decay via strong interactions prevents the direct measurement of their electromagnetic properties. However, a detailed understanding of how these resonant states feature in scattering processes can allow one to disentangle such information from photo production processes. In particular, there has been increasing interest in the determination of magnetic dipole moments using such methods. In a recent study [1], Gudiño et al. provide the first experimental determination of the magnetic dipole moment of the rho meson. To facilitate a comparison with this experimental determination, we present a calculation of the rho meson and pion electromagnetic form factors calculated in the framework of lattice QCD. Using the PACS-CS 2 + 1 flavor full QCD gauge field configurations, we are able to access low Q² values at near-physical quark masses. Through the use of variational techniques, we control excited state systematics in the matrix elements of the lowest-lying states and gain access to the matrix elements of the first excited state. Our determination of the rho meson g-factor gᵨ = 2.21(8) is in excellent agreement with this experimental determination, but with a significantly smaller uncertainty.
Rights: © 2015 American Physical Society
RMID: 0030028130
DOI: 10.1103/PhysRevD.91.074503
Appears in Collections:Physics publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.