Nuclear structure, form factors, quadrupole moments, and electronuclear sum rules
نویسندگان
چکیده
منابع مشابه
Bπ form factors from QCD Sum Rules
The H * Hπ form factor for H = B and D mesons is evaluated in a QCD sum rule calculation. We study the Borel sum rule for the three point function of two pseudoscalar and one vector meson currents up to order four in the operator product expansion. The double Borel transform is performed with respect to the heavy meson momenta. We discuss the momentum dependence of the form factors and two diff...
متن کاملSum Rules and Moments of the Nucleon Spin Structure Functions
The nucleon has been used as a laboratory to investigate its own spin structure and Quantum Chromodynamics. New experimental data on nucleon spin structure at low to intermediate momentum transfers combined with existing high momentum transfer data offer a comprehensive picture of the transition region from the confinement regime of the theory to its asymptotic freedom regime. Insight for some ...
متن کاملMagnetic and quadrupole moments of light spin–1 mesons in light cone QCD sum rules
The magnetic and quadrupole moments of the light–vector and axial–vector mesons are calculated in the light cone QCD sum rules. Our results for the static properties of these mesons are compared with the predictions of lattice QCD as well as other approaches existing in the literature.
متن کاملSubleading Isgur-Wise form factors from QCD sum rules.
In the hea.vy-qua.& effective theory, current matrix elements between two heavy pseudosca1a.r or vector mesons a.re pa.ra.metrized by a. set of universa.1 form factors. These functions are calcula.ted to. suhlea.ding order in the l/nz~ expansion using QCD sum rules. The equa.tions of motion and Wa.rd ident,ities of the effective theory are incorpora,ted in the analysis. Within this approa.ch, p...
متن کامل, φ Decay Form Factors from Light - Cone Sum Rules Revisited
We present an improved calculation of B → light vector form factors from light-cone sum rules, including one-loop radiative corrections to twist-2 and twist-3 contributions, and leading order twist-4 corrections. The total theoretical uncertainty of our results at zero momentum transfer is typically 10% and can be improved, at least in part, by reducing the uncertainty of hadronic input paramet...
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ژورنال
عنوان ژورنال: Bulletin of the Australian Mathematical Society
سال: 1979
ISSN: 0004-9727,1755-1633
DOI: 10.1017/s0004972700009205