Selection rules for bimolecular photoabsorption
نویسندگان
چکیده
منابع مشابه
Classical Photoabsorption Sum Rules
We u s e a q u a n tum loop expansion to derive sum rule constraints on polarized photoabsorption cross sections in the Standard Model, generalizing earlier results obtained by Altarelli, Cabibbo, and Maiani. We s h o w that the logarithmic integral of the spin-dependent photoabsorption cross section R 1 th dd Born () v anishes for any 2 ! 2 process a! bc in the classical, tree-graph approximat...
متن کاملPhotoabsorption Sum Rules and Quark Structure Parameters of Hadrons
Following the idea of the quark-hadron duality we present, within the constituent quark model approach, the relations between different bremsstrahlung-weihgted in-tegrals of the nucleon resonance photoexcitation cross sections and correlation functions of the quark dipole moments in the nucleon ground state. These functions are of interest for checking detailed quark-configuration structure of ...
متن کاملRules for Posture Selection
Previous studies on sequential effects of human grasping behaviour were restricted to binary grasp type selection. We asked whether two established motor control strategies, the end-state comfort effect and the hysteresis effect, would hold for sequential motor tasks with continuous solutions. To this end, participants were tested in a sequential (predictable) and a randomised (non-predictable)...
متن کاملSelection Rules for Splitting Strings
It has been pointed out that Nielsen-Olesen vortices may be able to decay by pair production of black holes. We show that when the abelian Higgs model is embedded in a larger theory, the additional fields may lead to selection rules for this process even in the absence of fermions due to the failure of a charge quantization condition. We derive these selection rules, and apply them to two separ...
متن کاملComparison of selection rules for ordinal optimization
The evaluation of performance of a design for complex discrete event systems through simulation is usually very time consuming. Optimizing the system performance becomes even more computationally infeasible. Ordinal optimization (OO) is a technique introduced to attack this difficulty in system design by looking at “order” in performances among designs instead of “value” and providing a probabi...
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: Chemical Physics
سال: 1992
ISSN: 0301-0104
DOI: 10.1016/0301-0104(92)80037-v