منابع مشابه
Phenomenology of Ir-renormalons in Inclusive Processes
We have compared the existing experimental data on the leading power corrections to the structure functions F 2 (x, Q 2), F 3 (x, Q 2), and F L (x, Q 2) with the IR-renormalon model predictions for higher-twist contributions. Our analysis shows that the model properly describes the x-dependence, but typically falls short by a factor 2 or 3 as far as the magnitude of higher twist corrections is ...
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Recent measurements of inclusive deep inelastic scattering differential cross-section in the range 1.5 GeV≤ Q ≤ 30000 GeV and 5·10 ≤ x ≤ 0.65 are presented. Phenomenological analyses performed from these measurements are also described.
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A phenomenological description of single transverse spin asymmetries for the inclusive production of hadrons in p− p and l− p processes is discussed within pQCD and a straightforward generalization of the factorization theorem with the inclusion of parton intrinsic transverse motion. Fits to existing data, predictions for new processes and interpretation of recent results are presented. QCD for...
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By calculating the O(αs) corrections to inclusive heavy-to-light sum rules we find model independent upper and lower bounds on form factors for B→πlν and B→ρlν. We use the bounds to rule out model predictions. Some models violate the bounds only for certain ranges of sum rule input parameters Λ̄ ≃ mB −mb and λ1, or for certain choices of model parameters, while others obey or violate the bounds ...
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In particle phenomenology, the impressive success of the standard theory based on SU(3)× SU(2)× U(1) has naturally led to the question of how to extend the theory to higher energies? One is necessarily led by weaknesses and incompleteness in the standard theory. If one extrapolates the standard theory as it stands one finds (approximate) unification of the gauge couplings at ∼ 10 GeV. But then ...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1971
ISSN: 0370-2693
DOI: 10.1016/0370-2693(71)90182-1