منابع مشابه
Predictions for single spin asymmetries in ℓp ↑ → πX and γ ∗ p ↑ → πX
Predictions for the single transverse spin asymmetry AN in semi-inclusive DIS processes are given; non negligible values of AN may arise from spin effects in the fragmentation of a polarized quark into a final hadron with a transverse momentum k⊥ with respect to the jet axis, the so-called Collins effect. The elementary single spin asymmetry of the fragmenting quark has been fixed in a previous...
متن کاملSingle Transverse - Spin Asymmetry in pp ↑ → πX and ep ↑ → πX
where the functions Ga(x1, x2), Eb(x ′ 1, x ′ 2) and Êc(z1, z2) are the twist-3 quantities representing, respectively, the transversely polarized distribution, the unpolarized distribution, and the fragmentation function for the pion. δqa(x) is the transversity distribution in p↑. a, b and c stand for the parton’s species, sum over which is implied. δqa, Eb and Êc are chiral-odd. Corresponding ...
متن کاملN ov 2 00 2 Single Transverse - Spin Asymmetry in pp ↑ → πX and ep ↑ → πX
where the functions Ga(x1, x2), Eb(x ′ 1, x ′ 2) and Êc(z1, z2) are the twist-3 quantities representing, respectively, the transversely polarized distribution, the unpolarized distribution, and the fragmentation function for the pion. δqa(x) is the transversity distribution in p↑. a, b and c stand for the parton’s species, sum over which is implied. δqa, Eb and Êc are chiral-odd. Corresponding ...
متن کاملA Compact X-band Linac for an X-ray Fel*
With the growing demand for FEL light sources, cost issues are being reevaluated. To make the machines more compact, higher frequency room temperature linacs are being considered, specifically ones using C-band (5.7 GHz) rf technology, for which 40 MV/m gradients are achievable. In this paper, we show that an X-band (11.4 GHz) linac using the technology developed for NLC/GLC can provide an even...
متن کاملSINGLE SPIN ASYMMETRY FOR p ↑ p → πX IN PERTURBATIVE QCD
Within the QCD-improved parton model and assuming the factorization theorem to hold in the helicity basis and for higher twist contributions, we show how non zero single spin asymmetries in hadron-hadron high energy and moderately large pT inclusive processes can be obtained, even in massless perturbative QCD, provided the quark intrinsic motion is taken into account. A simple model is construc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Topology and its Applications
سال: 1989
ISSN: 0166-8641
DOI: 10.1016/0166-8641(89)90035-7