New Quark Distributions and Semi-Inclusive Electroproduction on Polarized Nucleons
نویسنده
چکیده
The quark-parton model calculation including the effects of intrinsic transverse momentum and of all six twist-two distribution functions of quarks in polarized nucleons is performed. It is demonstrated that new twist-two quark distribution functions and polarized quark fragmentation functions can be investigated in semi-inclusive DIS at leading order inQ2. The general expression for the cross-section of semi-inclusive DIS of polarized leptons on polarized nucleons in terms of structure functions is also discussed. Now a visitor at CERN, PPE-Division, CH-1211, Geneva 23, Switzerland. E-mail:[email protected] 1
منابع مشابه
Chiral-odd Fragmentation Functions in Single Pion Inclusive Electroproduction
We consider a sub-leading twist chiral-odd pion fragmentation function and explore its contribution in single pion semi-inclusive electroproduction. We evaluate the single beam-spin azimuthal asymmetry ALU and the double spin asymmetry ALT in polarized electroproduction of pions from an unpolarized and transversely polarized nucleon respectively. The beam asymmetry is expressed as the product o...
متن کاملHermes and the Spin of the Proton
HERMES is a second generation experiment to study the spin structure of the nucleon, in which measurements of the spin dependent properties of semi-inclusive deep-inelastic lepton scattering are emphasized. Data have been accumulated for semi-inclusive pion, kaon, and proton double-spin asymmetries, as well as for high-pT hadron pairs, and singlespin azimuthal asymmetries for pion electroproduc...
متن کاملAnalyzing the nucleon spin in weak interaction processes at HERA energies
We investigate the possibility to measure the spin content carried by the different quark flavors in a nucleon by means of polarized deep inelastic scattering with W exchange at HERA. Such measurements require a polarized proton beam. The expected inclusive and semi inclusive asymmetries are sizable and for realistic luminosities the expected statistical accuracies are good enough to extract ne...
متن کاملIU/NTC 96-04 ADP-96-14/T217 Probing Charge-Symmetry-Violating Quark Distributions in Semi-Inclusive Leptoproduction of Hadrons
Recent experiments by the HERMES group at HERA are measuring semiinclusive electroproduction of pions from deuterium. We point out that by comparing the production of π and π− from an isoscalar target, it is possible, in principle, to measure charge symmetry violation in the valence quark distributions of the nucleons. It is also possible in the same experiments to obtain an independent measure...
متن کاملProbing charge-symmetry-violating quark distributions in semi-inclusive leptoproduction of hadrons.
Recent experiments by the HERMES group at HERA are measuring semiinclusive electroproduction of pions from deuterium. We point out that by comparing the production of π and π from an isoscalar target, it is possible, in principle, to measure charge symmetry violation in the valence quark distributions of the nucleons. It is also possible in the same experiments to obtain an independent measurem...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1994