Inclusive electroproduction of pseudo-scalar mesons on a proton: Selection of the strange-quark contribution to the proton spin

2000 ◽  
Vol 43 (1) ◽  
pp. 18-22
Author(s):  
R. Kh. Muradov ◽  
A. I. Akhmedov ◽  
R. M. Burdzhaliev
Keyword(s):  
Strange Quark ◽  
Proton Spin ◽  
Scalar Mesons ◽  
Quark Contribution ◽  
Pseudo Scalar ◽  
Selection Of

scholarly journals THE PROTON SPIN PUZZLE: WHERE ARE WE TODAY?

2009 ◽  
Vol 24 (14) ◽  
pp. 1087-1101 ◽  
Author(s):  
STEVEN D. BASS
Keyword(s):  
Strange Quark ◽  
Proton Spin ◽  
Vacuum Structure

The proton spin puzzle has challenged our understanding of QCD for the last 20 years. New measurements of polarized glue, valence and sea quark polarization, including strange quark polarization, are available. What is new and exciting in the data, and what might this tell us about the structure of the proton? The proton spin puzzle seems to be telling us about the interplay of valence quarks with the complex vacuum structure of QCD.

scholarly journals Quark contribution to the proton spin from 2+1+1 -flavor lattice QCD

2018 ◽  
Vol 98 (9) ◽  
Author(s):  
Huey-Wen Lin ◽  
Rajan Gupta ◽  
Boram Yoon ◽  
Yong-Chull Jang ◽  
Tanmoy Bhattacharya ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Proton Spin ◽  
Quark Contribution

ON QCD INVESTIGATIONS OF CHIRAL LAGRANGIAN

2005 ◽  
Vol 20 (08n09) ◽  
pp. 1627-1638 ◽  
Author(s):  
QING WANG
Keyword(s):  
Present Status ◽  
Scalar Mesons ◽  
Pseudo Scalar ◽  
Chiral Lagrangian

I review the present status of QCD investigations on chiral Lagrangian for pseudo scalar mesons.

ASYMMETRIES IN POLARIZED ELECTRON SCATTERING AND THE STRANGENESS CONTENT OF THE NUCLEON

2009 ◽  
Vol 24 (11n13) ◽  
pp. 881-886
Author(s):  
SEBASTIAN BAUNACK
Keyword(s):  
Electron Scattering ◽  
Strange Quark ◽  
Form Factors ◽  
Strange Quarks ◽  
Quark Contribution ◽  
Nucleon Form Factors ◽  
Strangeness Content ◽  
Existing Data

In the viewpoint of QCD, the nucleon is made up of constituent quarks, sea quarks and gluons. Concerning the quark sea, also strange quarks can contribute to the nucleon properties. Parity violating electron scattering offers a tool to investigate the strange quark contribution to the nucleon form factors. The measurements of different experiments are discussed and the recent results from the A4 collaboration at MAMI is presented. Altogether the existing data allow to give constraints on the strangeness contribution.

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