scholarly journals Dispersive estimate of the electromagnetic charge symmetry violation in the octet baryon masses

2014 ◽  
Vol 90 (6) ◽  
Author(s):  
F. B. Erben ◽  
P. E. Shanahan ◽  
A. W. Thomas ◽  
R. D. Young
Keyword(s):  
Symmetry Violation ◽  
Octet Baryon ◽  
Charge Symmetry ◽  
Dispersive Estimate

The nuclear fusion in the muonic molecule ddμ and the charge symmetry violation in the low energy dd interaction

1982 ◽  
Vol 115 (3) ◽  
pp. 171-173 ◽  
Author(s):  
L.N. Bogdanova ◽  
V.E. Markushin ◽  
V.S. Melezhik ◽  
L.I. Ponomarev
Keyword(s):  
Nuclear Fusion ◽  
Low Energy ◽  
Muonic Molecule ◽  
Symmetry Violation ◽  
Charge Symmetry

SUBSTRUCTURE EFFECT ON ρ-ω MIXING IN CHARGE-SYMMETRY VIOLATION

1992 ◽  
Vol 07 (32) ◽  
pp. 3037-3043 ◽  
Author(s):  
T. GOLDMAN ◽  
J.A. HENDERSON ◽  
A.W. THOMAS
Keyword(s):  
Symmetry Breaking ◽  
Quark Model ◽  
Quark Mass ◽  
Mass Shell ◽  
Mass Difference ◽  
Charge Symmetry Breaking ◽  
Symmetry Violation ◽  
Charge Symmetry ◽  
A Charge ◽  
Simple Quark Model

In generating a charge-symmetry breaking potential using ρ-ω mixing it is usually assumed that the mixing amplitude is constant (at the on-mass-shell value). Since the exchanged meson is actually far off-shell one must question the validity of this assumption. By constructing a simple quark model in which the mixing is generated by the u-d quark mass difference, we find that the assumption seems to be a very poor one.

scholarly journals Parity Violation in Deep Inelastic Scattering with the SoLID Spectrometer at JLab

2016 ◽  
Vol 40 ◽  
pp. 1660077 ◽  
Author(s):  
P. A. Souder
Keyword(s):  
Distribution Functions ◽  
Transverse Spin ◽  
Beyond The Standard Model ◽  
Parton Distribution Functions ◽  
Symmetry Violation ◽  
Higher Twist Effects ◽  
Charge Symmetry ◽  
Physics Potential ◽  
Large Acceptance ◽  
Nuclear Effects

We discuss precision measurements of PVDIS with the upgraded JLab 12 GeV beam by using a Solenoidal Łarge Iintensity Device (SoLID). The unique feature of SoLID, combining high luminosity and large acceptance, makes it possible to reach the high precision needed to have a high impact by using PVDIS to probe physics beyond the Standard Model. A measurement of PVDIS in deuterium will determine a fundamental coupling constant that is inaccessible with other means. PVDIS measurements can also access a number of topics in QCD physics, including searching for charge symmetry violation in the parton distribution functions, determining the [Formula: see text] ratio in the proton without nuclear effects, and a clean extraction of higher-twist effects due to quark-quark correlations. SoLID allows a full exploitation of the physics potential of the JLab 12 GeV upgrade. In addition to PVDIS, it has a set of approved highly-rated experiments to study nucleon transverse spin and transverse structure by using polarized semi-inclusive DIS and to study non-perturbative gluon dynamics with J/[Formula: see text] production near threshold. A brief description of the SoLID spectrometer is also given.

scholarly journals Progress in resolving charge symmetry violation in nucleon structure

2014 ◽  
Vol 23 (07) ◽  
pp. 1461010
Author(s):  
R. D. Young ◽  
P. E. Shanahan ◽  
A. W. Thomas
Keyword(s):  
Lattice Qcd ◽  
Recent Work ◽  
Mass Difference ◽  
Baryon Octet ◽  
Nucleon Structure ◽  
Symmetry Violation ◽  
Charge Symmetry ◽  
Parton Distributions

Recent work unambiguously resolves the level of charge symmetry violation in moments of parton distributions using (2 + 1)-flavor lattice QCD. We introduce the methods used for that analysis by applying them to determine the strong contribution to the proton–neutron mass difference. We also summarize related work which reveals that the fraction of baryon spin which is carried by the quarks is in fact structure-dependent rather than universal across the baryon octet.

Charge symmetry violation in the structure of the−33He system

1985 ◽  
Vol 31 (6) ◽  
pp. 2133-2139 ◽  
Author(s):  
S. Barshay ◽  
L. M. Sehgal
Keyword(s):  
Symmetry Violation ◽  
Charge Symmetry
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