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Article overview
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Distorted spin-dependent spectral function of an A=3 nucleus and semi-inclusive deep inelastic scattering processes | L.P. Kaptari
; A. Del Dotto
; E. Pace
; G. Salme'
; S. Scopetta
; | Date: |
10 Jul 2013 | Abstract: | The distorted spin-dependent spectral function of a nucleon inside an A=3
nucleus is introduced as a novel tool for investigating the polarized electron
scattering off polarized $^3$He in semi-inclusive DIS regime (SiDIS), going
beyond the standard plane wave impulse approximation. This distribution
function is applied to the study of the spectator SiDIS, $vec{^3{
m He}}(vec
e, e’ ~{^2}{
m H})X$, in order to properly take into account the final state
interaction between the hadronizing quark and the detected deuteron, with the
final goal of a more reliable extraction of the polarized parton-distribution
$g_1(x)$ inside a bound proton. Our analysis allows to single out two
well-defined kinematical regions where the experimental asymmetries could yield
very interesting information: the region where the final state effects can be
minimized, and therefore the direct access to the parton distributions in the
proton is feasible, and the one where the final state interaction dominates,
and the spectator SiDIS reactions can elucidate the mechanism of the quark
hadronization itself. The perspectives of extending our approach i) to the
mirror nucleus, $^3$H, for achieving a less model-dependent flavor
decomposition, and ii) to the asymmetries measured in the standard SiDIS
reactions, $vec e + vec{^3 {
m He}} o e’ + h+X$ with $h$ a detected fast
hadron, with the aim of extracting the neutron transversity, are discussed. | Source: | arXiv, 1307.2848 | Services: | Forum | Review | PDF | Favorites |
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