Matches in SemOpenAlex for { <https://semopenalex.org/work/W49114468> ?p ?o ?g. }
Showing items 1 to 67 of
67
with 100 items per page.
- W49114468 abstract "Perturbative QCD predictions that are truncated at fixed order have an unphysical dependence on the renormalisation procedure. We investigate two methods of avoiding scale and scheme dependence in QCD predictions of physical observables: the Effective Charges (ECH) method and the Principle of Minimal Sensitivity (PMS).The ECH method is used to avoid the renormalisation scale and scheme dependence of fixed-order predictions of event shape moments. Values of αs(MZ) are extracted from e+e− data using both ECH and the physical scale methodin the MS scheme. The ECH method at NLO is found to perform better thanstandard MS perturbation theory (MS PT) when applied to means of event shapes. However ECH at NNLO functions less well than at NLO, and the ECH method also fails to describe data for higher moments of event shapes. Pad e Approximant methods are used to estimate missing higher orders in the perturbative expansions, a technique that works especially well for MS PT applied to the higher moments. We also examine the effect of adding non-perturbative power corrections to the perturbative approximations. It is found that power corrections are insufficient to counteract the undesirable behaviour of ECH at NNLO.The PMS method is used to provide predictions of the b b and tt total cross-sections at the Tevatron and the LHC. Hadronic cross-sections depend on the factorisation scale as well as the renormalisation scale. PMS is applied by searching for stationary points on the cross-section surface in the space of the two scales. The PMS method predicts substantially larger b b cross-sections than using standard diagonal scale choices. For tt production, however, there is very little difference observed between the two methods. Both produce predictions that are in good agreement with the current experimental data." @default.
- W49114468 created "2016-06-24" @default.
- W49114468 creator A5021335270 @default.
- W49114468 date "2013-02-11" @default.
- W49114468 modified "2023-09-26" @default.
- W49114468 title "The scale dependence of perturbative QCD predictions for e+e− event shape moments and LHC observables" @default.
- W49114468 hasPublicationYear "2013" @default.
- W49114468 type Work @default.
- W49114468 sameAs 49114468 @default.
- W49114468 citedByCount "0" @default.
- W49114468 crossrefType "dissertation" @default.
- W49114468 hasAuthorship W49114468A5021335270 @default.
- W49114468 hasConcept C109214941 @default.
- W49114468 hasConcept C11413529 @default.
- W49114468 hasConcept C117137515 @default.
- W49114468 hasConcept C121332964 @default.
- W49114468 hasConcept C174256460 @default.
- W49114468 hasConcept C187834632 @default.
- W49114468 hasConcept C19694890 @default.
- W49114468 hasConcept C2776230626 @default.
- W49114468 hasConcept C2778755073 @default.
- W49114468 hasConcept C2779662365 @default.
- W49114468 hasConcept C32848918 @default.
- W49114468 hasConcept C33923547 @default.
- W49114468 hasConcept C62520636 @default.
- W49114468 hasConcept C87668248 @default.
- W49114468 hasConceptScore W49114468C109214941 @default.
- W49114468 hasConceptScore W49114468C11413529 @default.
- W49114468 hasConceptScore W49114468C117137515 @default.
- W49114468 hasConceptScore W49114468C121332964 @default.
- W49114468 hasConceptScore W49114468C174256460 @default.
- W49114468 hasConceptScore W49114468C187834632 @default.
- W49114468 hasConceptScore W49114468C19694890 @default.
- W49114468 hasConceptScore W49114468C2776230626 @default.
- W49114468 hasConceptScore W49114468C2778755073 @default.
- W49114468 hasConceptScore W49114468C2779662365 @default.
- W49114468 hasConceptScore W49114468C32848918 @default.
- W49114468 hasConceptScore W49114468C33923547 @default.
- W49114468 hasConceptScore W49114468C62520636 @default.
- W49114468 hasConceptScore W49114468C87668248 @default.
- W49114468 hasLocation W491144681 @default.
- W49114468 hasOpenAccess W49114468 @default.
- W49114468 hasPrimaryLocation W491144681 @default.
- W49114468 hasRelatedWork W1486107996 @default.
- W49114468 hasRelatedWork W149068316 @default.
- W49114468 hasRelatedWork W1866480582 @default.
- W49114468 hasRelatedWork W1904081375 @default.
- W49114468 hasRelatedWork W1978161584 @default.
- W49114468 hasRelatedWork W199420435 @default.
- W49114468 hasRelatedWork W2027700679 @default.
- W49114468 hasRelatedWork W2058303495 @default.
- W49114468 hasRelatedWork W2071606511 @default.
- W49114468 hasRelatedWork W2252845607 @default.
- W49114468 hasRelatedWork W2272272967 @default.
- W49114468 hasRelatedWork W2738183307 @default.
- W49114468 hasRelatedWork W2952882939 @default.
- W49114468 hasRelatedWork W2962937620 @default.
- W49114468 hasRelatedWork W3098614516 @default.
- W49114468 hasRelatedWork W3100112565 @default.
- W49114468 hasRelatedWork W3101969968 @default.
- W49114468 hasRelatedWork W3102524597 @default.
- W49114468 hasRelatedWork W3102793189 @default.
- W49114468 hasRelatedWork W3122918803 @default.
- W49114468 isParatext "false" @default.
- W49114468 isRetracted "false" @default.
- W49114468 magId "49114468" @default.
- W49114468 workType "dissertation" @default.