Relativistic Dirac Analyses of Polarized Proton Scatterings from Sn isotopes

2021 ◽  
Vol 71 (3) ◽  
pp. 249-254
Author(s):  
Ho-Seong LIM ◽  
Sugie SHIM*
Keyword(s):  
Polarized Proton

scholarly journals Determining the helicity structure of the nucleon at the Electron Ion Collider in China

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Daniele Paolo Anderle ◽  
Tie-Jiun Hou ◽  
Hongxi Xing ◽  
Mengshi Yan ◽  
C.-P. Yuan ◽  
...  
Keyword(s):  
Electron Beam ◽  
Inelastic Scattering ◽  
Scattering Data ◽  
Leading Order ◽  
Specific Topic ◽  
Good Separation ◽  
Effective Electron ◽  
Deep Inelastic Scattering Data ◽  
Polarized Proton ◽  
Helicity Structure

Abstract Understanding how sea quarks behave inside a nucleon is one of the most important physics goals of the proposed Electron-Ion Collider in China (EicC), which is designed to have a 3.5 GeV polarized electron beam (80% polarization) colliding with a 20 GeV polarized proton beam (70% polarization) at instantaneous luminosity of 2 × 1033cm−2s−1. A specific topic at EicC is to understand the polarization of individual quarks inside a longitudinally polarized nucleon. The potential of various future EicC data, including the inclusive and semi-inclusive deep inelastic scattering data from both doubly polarized electron-proton and electron-3He collisions, to reduce the uncertainties of parton helicity distributions is explored at the next-to-leading order in QCD, using the Error PDF Updating Method Package (ePump) which is based on the Hessian profiling method. We show that the semi-inclusive data are well able to provide good separation between flavour distributions, and to constrain their uncertainties in the x > 0.005 region, especially when electron-3He collisions, acting as effective electron-neutron collisions, are taken into account. To enable this study, we have generated a Hessian representation of the DSSV14 set of PDF replicas, named DSSV14H PDFs.

scholarly journals The 200 nA Variable energy polarized proton beam at triumf

1978 ◽  
Author(s):  
J. L. Beveridge ◽  
G. Dutto ◽  
P. W. Schmor ◽  
G. Roy
Keyword(s):  
Proton Beam ◽  
Polarized Proton ◽  
Variable Energy

scholarly journals Interpreting data from polarized proton beams

1974 ◽  
Vol 78 (1) ◽  
pp. 110-128 ◽  
Author(s):  
G.L. Kane ◽  
U.P. Sukhatme
Keyword(s):  
Proton Beams ◽  
Polarized Proton

Measurements of ΔσTin polarized-neutron–polarized-proton scattering

1995 ◽  
Vol 52 (5) ◽  
pp. 2351-2361 ◽  
Author(s):  
W. S. Wilburn ◽  
C. R. Gould ◽  
D. G. Haase ◽  
P. R. Huffman ◽  
C. D. Keith ◽  
...  
Keyword(s):  
Proton Scattering ◽  
Polarized Proton ◽  
Polarized Neutron

scholarly journals Polarized proton target for use in intense electron and photon beams

1970 ◽  
Vol 84 (2) ◽  
pp. 168-172 ◽  
Author(s):  
M. Borghini ◽  
O. Chamberlain ◽  
R.Z. Fuzesy ◽  
W. Gorn ◽  
C.C. Morehouse ◽  
...  
Keyword(s):  
Proton Target ◽  
Photon Beams ◽  
Polarized Proton ◽  
Electron And Photon ◽  
Intense Electron ◽  
Polarized Proton Target

The University of Minnesota polarized proton source

1968 ◽  
Vol 63 (2) ◽  
pp. 210-214 ◽  
Author(s):  
R.N. Boyd ◽  
C.G. Hoot ◽  
C.H. Poppe ◽  
J.A. Sievers ◽  
J.H. Williams
Keyword(s):  
University Of Minnesota ◽  
Polarized Proton ◽  
Proton Source ◽  
The University

scholarly journals PHYSICS OF GLUON HELICITY

2014 ◽  
Vol 25 ◽  
pp. 1460028
Author(s):  
XIANGDONG JI ◽  
YONG ZHAO
Keyword(s):  
Matrix Element ◽  
Time Correlation ◽  
Spin Operator ◽  
Large Momentum ◽  
Time Correlation Functions ◽  
Gauge Invariant ◽  
Equal Time ◽  
Polarized Proton ◽  
Gluon Spin ◽  
Gluon Helicity

The total gluon helicity in a polarized proton is shown to be a matrix element of a gauge-invariant but nonlocal, frame-dependent gluon spin operator [Formula: see text] in the large momentum limit. The operator [Formula: see text] is fit for the calculation of the total gluon helicity in lattice QCD. This calculation also implies that parton physics can be studied through the large momentum limit of frame-dependent, equal-time correlation functions of quarks and gluons.

Physics with a High Energy Polarized Proton Beam at Fermilab

1981 ◽  
pp. 489-496
Author(s):  
I. P. Auer ◽  
E. Colton ◽  
R. Ditzler ◽  
D. Hill ◽  
H. Spinka ◽  
...  
Keyword(s):  
Proton Beam ◽  
High Energy ◽  
Polarized Proton
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