Spin-dependent structure functions of nuclei in the meson-nucleon theory.
نویسندگان
چکیده
A theoretical approach to the investigation of spin-dependent structure functions in deep inelastic scattering of polarized leptons off polarized nuclei, based on the effective meson-nucleon theory and operator product expansion method, is proposed and applied to deuteron and 3 He. The explicit forms of the moments of the deuteron and 3 He spin-dependent structure functions are * On leave from Bogoliubov' 1 found and numerical estimates of the influence of nuclear structure effects are presented.
منابع مشابه
بررسی و مطالعه توابع ساختار و توزیع زاویه‌ای پراکندگی لپتون‌ها از هسته‌های 40Ca و 56Fe
In this paper, we calculate nuclear structure function and EMC effect of 40Ca and 56Fe nuclei. To achive the goals, we consider Fermi motion and binding energy contrbiution in the harmonic oscillator model. In this model, harmonic oscillator parameter ħω related to shells root mean square radius and for free nucleon structure functions, is obtained from GRV’s free nucleon structure functions. ...
متن کاملMagic numbers in exotic nuclei and spin-isospin properties of the NN interaction.
The magic numbers in exotic nuclei are discussed, and their novel origin is shown to be the spin-isospin dependent part of the nucleon-nucleon interaction in nuclei. The importance and robustness of this mechanism is shown in terms of meson exchange, G-matrix, and QCD theories. In neutron-rich exotic nuclei, magic numbers such as N = 8, 20, etc. can disappear, while N = 6, 16, etc. arise, affec...
متن کاملPresence of the Universal Substructures in the Hadrons – Constituent Quarks
The universality of single-spin asymmetry on inclusive π-meson production is discussed. This universality can be related to the hadron substructure— constituent quarks in the frame of the quark model for U-matrix. Polarization experiments give us an unique opportunity to probe the nucleon internal structure. While spin averaged cross-sections can be calculated within acceptable accuracy, curren...
متن کاملMeson exchange models for Meson production
The production of mesons in nucleon–nucleon collisions is reviewed from the viewpoint of the meson–exchange picture. In the first part various possible production mechanisms and their relative importance are discussed. In addition, general features of meson production are described. In the second part special emphasis is put on pion production. Implications of chiral perturbation theory are dis...
متن کاملNuclear Modification of Double Spin Asymmetries
We compute nuclear spin dependent structure functions using a dynamical model for bound nucleon densities and hence calculate nuclear modifications to asymmetries observed in recent doubly polarised deep inelastic scattering experiments. We conclude that while the individual densities are changed substantially by nuclear effects, the asymmetries themselves are largely insensitive to these chang...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Physical review. C, Nuclear physics
دوره 51 1 شماره
صفحات -
تاریخ انتشار 1995