The next - to - leading QCD approximation to the Ellis - Jaffe sum rule
نویسنده
چکیده
The α 2 s correction to the Ellis-Jaffe sum rule for the structure function g 1 of polarized deep inelastic lepton-nucleon scattering is calculated.
منابع مشابه
D ec 1 99 3 Vacuum QCD and new information on nucleon structure functions
It is shown, that specific chirality and flavor properties of the instanton-induced interaction allow us to explain the observed violation Ellis-Jaffe and Gottfried sum rules. A large value of these violations originates from the anomalous growth of the instanton-induced interaction between quarks at high energy. The new sum rule which connect the values of violations of Ellis-Jaffe and Gottfri...
متن کاملEllis-Jaffe sum rule: The estimates of the next-to-next-to-leading-order QCD corrections.
The procedure of the estimates of the higher-order perturbative QCD corrections to the physical quantities is generalized to the case when the quantities under consideration obey the renormalization group equations with the corresponding anomalous dimension functions. This procedure is used to estimate the α s-corrections to the singlet part of the Ellis-Jaffe sum rule for f = 3 numbers of flav...
متن کاملTarget Mass Corrections to QCD Bjorken Sum Rule for Nucleon Spin Structure Functions∗
We discuss the possible target mass corrections in the QCD analysis of nucleon’s spin-dependent structure functions measured in the polarized deep-inelastic leptoproduction. The target mass correction for the QCD Bjorken sum rule is obtained from the Nachtmann moment and its magnitude is estimated employing positivity bound as well as the experimental data for the asymmetry parameters. We also ...
متن کاملPolarized parton distributions in perturbative QCD
Experimental information on deeply inelastic scattering (DIS) of polarized leptons off polarized nucleon targets has greatly improved since the first E80/E130 experiments at SLAC (see ref. [1] for a complete bibliography.) While at an early stage the attention was mainly focused on the test of the Ellis-Jaffe [2] sum rule, more recently the interest is concentrated on the study of the general f...
متن کاملAn Introduction to Spin Dependent Deep Inelastic Scattering*
The main focus of these lectures is on those aspects of deep inelastic scattering that can be derived directly from QCD using quantum field theory, without recourse to phenomenological models. The emphasis is on spin dependent scattering, but the theory of spin averaged scattering is also discussed. A detailed analysis is given for the case of spin 1/2 targets, with a brief discussion of higher...
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