scholarly journals The integral of the spin-dependent structure function g1p and the Ellis-Jaffe sum rule

1988 ◽  
Vol 212 (4) ◽  
pp. 511-514 ◽  
Author(s):  
V.W. Hughes ◽  
V. Papavassiliou ◽  
R. Piegaia ◽  
K.P. Schüler ◽  
G. Baum
Keyword(s):  
Structure Function ◽  
Sum Rule

scholarly journals THE SECOND MOMENT OF THE STRUCTURE FUNCTION FOR PSEUDOSCALAR MESONS IN QCD SUM RULES

1996 ◽  
Vol 05 (01) ◽  
pp. 121-129
Author(s):  
YOSHINORI NISHINO
Keyword(s):  
Structure Function ◽  
Sum Rules ◽  
Qcd Sum Rules ◽  
Sum Rule ◽  
Second Moment ◽  
Flavor Structure ◽  
Pseudoscalar Mesons

We calculate the second moment [Formula: see text] of the flavor-singlet structure function [Formula: see text] for the pion and the kaon in the framework of the QCD sum rule, and investigate how the results depend on their flavor structure (quark contents). Our calculations give similar values of [Formula: see text] for these two mesons as a result of the cancellation among several non-small factors.

scholarly journals Estimating the small-x exponent of the structure function g1NS from the Bjorken sum rule

2002 ◽  
Vol 549 (1-2) ◽  
pp. 109-114 ◽  
Author(s):  
Anke Knauf ◽  
Michael Meyer-Hermann ◽  
Gerhard Soff
Keyword(s):  
Structure Function ◽  
Sum Rule ◽  
Bjorken Sum Rule ◽  
Small X

scholarly journals A sum rule for the polarised photon structure function g1γ

1993 ◽  
Vol 391 (1-2) ◽  
pp. 69-99 ◽  
Author(s):  
S. Narison ◽  
G.M. Shore ◽  
G. Veneziano
Keyword(s):  
Structure Function ◽  
Photon Structure ◽  
Sum Rule

scholarly journals AN ANALYSIS OF MOMENTUM FRACTIONS OF QUARKS AND GLUONS IN A MODEL OF PROTON

2013 ◽  
Vol 28 (19) ◽  
pp. 1350086 ◽  
Author(s):  
AKBARI JAHAN ◽  
D. K. CHOUDHURY
Keyword(s):  
Structure Function ◽  
Upper Bounds ◽  
Proton Structure Function ◽  
Lower And Upper Bounds ◽  
Self Similarity ◽  
Sum Rule ◽  
Proton Structure

Momentum sum rule can be used as an inequality to estimate the lower and upper bounds of the momentum fractions of quarks and gluons in a model of proton valid in a limited x range. We compute such bounds in a self-similarity based model of proton structure function valid in the range 6.2 × 10-7 ≤ x ≤ 10-2. The results conform to the asymptotic QCD expectations.

scholarly journals Low x Behavior of the Isovector Nucleon Polarized Structure Function and the Bjorken Sum Rule

1997 ◽  
Vol 12 (05) ◽  
pp. 321-328
Author(s):  
Franco Buccella ◽  
Ofelia Pisanti ◽  
Pietro Santorelli
Keyword(s):  
Structure Function ◽  
Sum Rule ◽  
Bjorken Sum Rule ◽  
Polarized Proton ◽  
Low X

The combination [Formula: see text] is derived from SLAC data on polarized proton and deuteron targets, evaluated at Q2=10  GeV 2, and compared with the results of SMC experiment. The agreement is satisfactory except for the points at the three lowest x, which have an important role in the SMC evaluation on the L.H.S. of the Bjorken sum rule.

scholarly journals Nuclear Correlation Effects in the Deep Inelastic Structure Function of 4 He

1997 ◽  
Vol 50 (1) ◽  
pp. 53
Author(s):  
Hiko Morita ◽  
Toru Suzuki
Keyword(s):  
Structure Function ◽  
Spectral Function ◽  
Correlation Effects ◽  
Sum Rule

The structure function of 4He is calculated based on a realistic spectral function which is consistent with the momentum sum rule. The calculation reproduces the empirical suppression of the EMC ratio R(x) = F2(4He)/F2(D) at x < 1. At x~ 1 the quasielastic contribution produces a sizable effect in the ratio, but it becomes negligible around Q2 ~ 20 (GeV/c)2.

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