Testing target independence of the `proton spin' effect in semiinclusive deep inelastic scattering

Shore, G.M.; Veneziano, G.

doi:10.1016/S0550-3213(97)00751-7

Testing target independence of the `proton spin' effect in semiinclusive deep inelastic scattering

G.M. Shore
(
- Swansea U.
)
,
G. Veneziano
(
- CERN
)

Aug, 1997

22 pages

Published in:

Nucl.Phys.B 516 (1998) 333-353

e-Print:

hep-ph/9709213 [hep-ph]

DOI:

10.1016/S0550-3213(97)00751-7

Report number:

CERN-TH-97-206,
SWAT-97-159

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Abstract:

A natural consequence of the composite operator propagator-vertex description of deep inelastic scattering developed by the authors is that the anomalous suppression observed in the flavour singlet contribution to the first moment of the polarised proton structure function

g_1^p

(the `proton spin' problem) is not a special property of the proton structure but is a target independent effect which can be related to an anomalous suppression in the QCD topological susceptibility. In this paper, it is shown how this target independent mechanism can be tested in semi-inclusive deep inelastic scattering in which a pion or D meson carrying a large target energy fraction

z

is detected in the target fragmentation region.

Note:

23 pages, TeX, includes 11 ps figures Report-no: CERN-TH/97-206, SWAT 97/159

electron p: deep inelastic scattering
electron p: inclusive reaction
p: structure function
structure function: polarization
moment
sum rule
vertex function
electron hadron: deep inelastic scattering
target: dependence
symmetry: SU(3)

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