35,587 research outputs found
Minimal mass-size of a stable 3He cluster
The minimal number of 3He atoms required to form a bound cluster has been
estimated by means of a Diffusion Monte Carlo procedure within the fixed-node
approximation. Several importance sampling wave functions have been employed in
order to consider different shell-model configurations. The resulting upper
bound for the minimal number is 32 atoms.Comment: 2 pages, no figure
Consistency in NLO analyses of inclusive and semi-inclusive polarized DIS data
We perform a detailed study of the consistency between different sets of
polarized deep inelastic scattering data and theory, from the standpoint of a
next to leading order QCD global analysis, and following the criteria proposed
by Collins and Pumplin. In face of recent suggestions that challenge the usual
assumption about parent parton spin independence of unpolarized fragmentation
functions, we specially focus on polarized semi-inclusive data.Comment: 17 pages, 5 figure
Constraints on gluon polarization in the nucleon at NLO accuracy
We compare constraints on the gluon polarization in the nucleon obtained in
next to leading order global QCD fits to polarized deep inelastic scattering
data with those coming from observables more directly linked to the gluon
polarization, such as the double spin asymmetry measured by Phenix at RHIC, and
high-pT hadron production studied by COMPASSComment: 4 pages, 3 figures, 1 tabl
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