scholarly journals $J/\psi$ production as a probe of charge symmetry violations and nuclear corrections in parton distributions

1996 ◽  
Vol 70 (4) ◽  
pp. 661-664 ◽  
Author(s):  
G. Piller ◽  
A.W. Thomas
Keyword(s):  
Charge Symmetry ◽  
Parton Distributions ◽  
Psi Production

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.

scholarly journals A new analysis of charge symmetry violation in parton distributions

1999 ◽  
Vol 468 (1-2) ◽  
pp. 161-167 ◽  
Author(s):  
C. Boros ◽  
F.M. Steffens ◽  
J.T. Londergan ◽  
A.W. Thomas
Keyword(s):  
Symmetry Violation ◽  
Charge Symmetry ◽  
Parton Distributions

scholarly journals Evidence for charge symmetry violation in parton distributions

1999 ◽  
Vol 59 (7) ◽  
Author(s):  
C. Boros ◽  
J. T. Londergan ◽  
A. W. Thomas
Keyword(s):  
Symmetry Violation ◽  
Charge Symmetry ◽  
Parton Distributions

CHARGE ASYMMETRY OF PARTON DISTRIBUTIONS

1994 ◽  
Vol 09 (19) ◽  
pp. 1799-1806 ◽  
Author(s):  
E.N. RODIONOV ◽  
A.W. THOMAS ◽  
J.T. LONDERGAN
Keyword(s):  
Wave Function ◽  
Mass Difference ◽  
Charge Asymmetry ◽  
Relative Difference ◽  
Symmetry Violation ◽  
Charge Symmetry ◽  
Parton Distributions ◽  
The Masses ◽  
Bjorken X

We calculate the valence distribution of down quarks in the proton and up quarks in the neutron (the ‘minority’ quark distributions), taking into consideration the major sources of charge symmetry violation, including the effect of the mass difference of the u and d quarks on the bag wave function, and the masses of the intermediate diquark states. The relative difference of the distributions can be as large as 10% for intermediate values of Bjorken x.

scholarly journals Evidence for charge symmetry violation in parton distributions

1999 ◽  
Vol 654 (1) ◽  
pp. 596c-601c
Author(s):  
A.W. Thomas ◽  
C. Boros ◽  
J.T. Londergan
Keyword(s):  
Symmetry Violation ◽  
Charge Symmetry ◽  
Parton Distributions
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