scholarly journals Structure functions at very high Q[sup 2] from HERA

2000 ◽  
Author(s):  
Christopher M. Cormack
Keyword(s):  
Structure Functions ◽  
High Q ◽  
Very High

Measuring the scale parameter of quantum chromodynamics at CHEER

1981 ◽  
Vol 59 (11) ◽  
pp. 1769-1773
Author(s):  
Lawrence M. Krauss
Keyword(s):  
Quantum Chromodynamics ◽  
Scale Parameter ◽  
Structure Functions ◽  
High Q ◽  
Advantages And Disadvantages ◽  
Almost All

The possibility of measuring the scale parameter of quantum chromodynamics, Λs, at CHEER is discussed. Rationale for the measurement of this quantity are given, along with a discussion of the theoretical difficulties involved. The measurement of the Q2 dependence of structure functions and their moments, and methods of measuring αs and its Q2 evolution, are discussed, and arguments are given for the advantages and disadvantages of going to high Q2 values at CHEER. It is concluded that while sensitivity to Λ is lowered at high Q2, CHEER will, in principle, be able to provide the first clean measurements of Λ, free from almost all the theoretical confusion involved in interpretations of present data.

Very high Q microwave spectroscopy on trapped /sup 171/Yb/sup +/ ions: application as a frequency standard

1995 ◽  
Vol 44 (2) ◽  
pp. 113-116 ◽  
Author(s):  
P.T.H. Fisk ◽  
M.J. Sellars ◽  
M.A. Lawn ◽  
C. Coles ◽  
A.G. Mann ◽  
...  
Keyword(s):  
Frequency Standard ◽  
Microwave Spectroscopy ◽  
High Q ◽  
Very High

scholarly journals STRUCTURE FUNCTIONS IN DEEP INELASTIC LEPTON-NUCLEON SCATTERING

2000 ◽  
Vol 15 (supp01b) ◽  
pp. 467-494 ◽  
Author(s):  
MAX KLEIN
Keyword(s):  
Inelastic Scattering ◽  
Structure Function ◽  
Deep Inelastic Scattering ◽  
Gluon Distribution ◽  
Structure Functions ◽  
Heavy Flavor ◽  
Nucleon Scattering ◽  
High Q ◽  
Low X

This report presents the latest results on structure functions, as available at the Lepton-Photon Symposium 1999. It focuses on three experimental areas: new structure function measurements, in particular from HERA at low x and high Q2; results on light and heavy flavor densities; and determinations of the gluon distribution and of αs. As the talk was delivered at a historic moment and place, a few remarks were added recalling the exciting past and looking into the promising future of deep inelastic scattering (DIS).

Exact trapping state dynamics for the 85Rb atom micromaser at very high Q and/or very low T

1996 ◽  
Author(s):  
Amitabh Joshi ◽  
A. Kremid ◽  
N. Nayak ◽  
B. V. Thompson ◽  
R. K. Bullough
Keyword(s):  
High Q ◽  
Very High ◽  
Trapping State

A loss mechanism study of a very high Q silicon micromechanical oscillator

2005 ◽  
Vol 97 (2) ◽  
pp. 023524 ◽  
Author(s):  
Xiao Liu ◽  
J. F. Vignola ◽  
H. J. Simpson ◽  
B. R. Lemon ◽  
B. H. Houston ◽  
...  
Keyword(s):  
Mechanism Study ◽  
Loss Mechanism ◽  
High Q ◽  
Very High

Soil zinc and its uptake by plants. II. Soil chemistry in relation to prediction of availability

Soil Research ◽  
1972 ◽  
Vol 10 (2) ◽  
pp. 165 ◽  
Author(s):  
KG Tiller ◽  
JL Honeysett ◽  
Vries MPC De
Keyword(s):  
Soil Chemistry ◽  
Zinc Concentration ◽  
Alkaline Soils ◽  
Acidic Soils ◽  
High Q ◽  
Unit Slope ◽  
Plant Data ◽  
Very High ◽  
Soil Groups ◽  
Soil Zinc

Representatives of nine soil groups were extracted with reagents that have been used to predict zinc deficiency. The amounts of soil zinc removed were discussed in terms of specific and non-specific bonding in relation to the reagent used. The desorption of natural zinc was also described in terms of the quantity/intensity (Q/I) relation and an equilibrium zinc concentration (ZnQ) at natural pH. The ZnQ values varied from 1 to 4 �gI. for the alkaline soils and 8-190 pg/l. for the acidic soils. The Q/I ratio was derived by radioisotopic and chemical isotherm procedures. Log Q/I (I = total soluble zinc) approximated closely a linear relation of unit slope with pH. This was ascnbed to a common reation of zinc with all soils by specific sorption dominated by ZnOHA ions such that Q/I� = constant where I' = (ZnOH+aq). Deviations from this relation are discussed. The relations between soil and plant (clover and wheat) variables were studied by simple and multiple regression analysis. Single values of intensity variables, and, to a lesser extent, Q/I variables, correlated well with plant data but not the quantity variables. The improved correlations of Q variables when combined with Q/I variables accorded with published work. The problem of predicting zinc availability on alkaline soils which are dominated by very high Q/I values, is discussed.

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