The gluonic contribution to polarized deep-inelastic scattering in the standard model

1991 ◽  
Vol 362 (1-2) ◽  
pp. 3-20 ◽  
Author(s):  
W. Vogelsang ◽  
A. Weber
Keyword(s):  
Standard Model ◽  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
The Standard Model ◽  
Polarized Deep Inelastic Scattering

scholarly journals DEEP INELASTIC SCATTERING AT HERA

1998 ◽  
Vol 13 (10) ◽  
pp. 1543-1621 ◽  
Author(s):  
B. FOSTER
Keyword(s):  
Standard Model ◽  
Inelastic Scattering ◽  
Structure Function ◽  
Deep Inelastic Scattering ◽  
Gluon Density ◽  
Electromagnetic Interactions ◽  
New Information ◽  
The Standard Model ◽  
Consistent Picture ◽  
First Time

Results from the H1 and ZEUS experiments at HERA on deep inelastic scattering are reviewed. The data lead to a consistent picture of a steep rise in the F2 structure function and in the gluon density within the proton. Important new information on the partonic structure of diffraction is emerging from H1 and ZEUS. The spacelike region in which the weak and electromagnetic interactions become of equal strength is being explored for the first time. A possible excess of events at high x and Q2 compared to the expectations of the Standard Model has been observed in both experiments.

scholarly journals The Drell–Hearn–Gerasimov Sum-Rule in QCD

1997 ◽  
Vol 12 (15) ◽  
pp. 1051-1067 ◽  
Author(s):  
S. D. Bass
Keyword(s):  
Standard Model ◽  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
Magnetic Moment ◽  
Present Status ◽  
Spin Structure ◽  
Sum Rules ◽  
Sum Rule ◽  
Minimal Standard ◽  
Polarized Deep Inelastic Scattering

Photoproduction spin sum-rules offer a new window on the spin structure of the nucleon that complements the information we can learn from polarized deep inelastic scattering experiments. We review the theory and present status of the Drell–Hearn–Gerasimov sum-rule in QCD, emphasizing the possible relation between the present "discrepancy" in this sum-rule and the nucleon's strangeness magnetic moment. In the case of an elementary electron or photon target (say at the NLC) the Drell–Hearn–Gerasimov sum-rule provides a test for physics beyond the minimal Standard Model.

scholarly journals Electroweak physics in inclusive deep inelastic scattering at the LHeC

2020 ◽  
Vol 80 (9) ◽  
Author(s):  
Daniel Britzger ◽  
Max Klein ◽  
Hubert Spiesberger
Keyword(s):  
Standard Model ◽  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
Percent Level ◽  
Boson Mass ◽  
Charged Current ◽  
Model Parameters ◽  
Indirect Determination ◽  
The Standard Model ◽  
Electroweak Physics

AbstractAt the proposed electron-proton collider LHeC electroweak interactions can be uniquely studied in a largely unexplored kinematic region of spacelike momentum transfer. We simulate inclusive neutral- and charged-current deep-inelastic lepton proton scattering cross section data at center-of-mass energies of 1.2 and 1.3 TeV, and estimate the uncertainties of Standard Model parameters as well as of parameters describing physics beyond the Standard Model. A precision at sub-percent level is expected for the measurement of the weak neutral-current couplings of the light-quarks to the Z boson, $$g_{A/V}^{u/d}$$ g A / V u / d , improving their present precision by more than an order of magnitude. The weak mixing angle can be determined with a precision of about $$\Delta \sin ^2\theta _\text {W}=\pm \,0.00015$$ Δ sin 2 θ W = ± 0.00015 , and its scale dependence can be studied in the range between about 25 and 700 GeV. An indirect determination of the W-boson mass in the on-shell scheme is possible with an experimental uncertainty down to $$\Delta m_{W}=\pm \,6\,\text {MeV}$$ Δ m W = ± 6 MeV . We discuss how measurements in deep-inelastic scattering compare with those in the timelike domain, and which aspects are unique, for instance electroweak parameters in charged-current interactions. We conclude that the LHeC will determine electroweak physics parameters, in the spacelike region, with unprecedented precision leading to thorough tests of the Standard Model and possibly beyond.

scholarly journals Tagged-photon events in polarized deep inelastic scattering

2001 ◽  
Vol 92 (6) ◽  
pp. 930-939
Author(s):  
G. I. Gakh ◽  
M. I. Konchatnij ◽  
N. P. Merenkov
Keyword(s):  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
Polarized Deep Inelastic Scattering
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