6,752 research outputs found
Measurement of at D{\O} Experiment
Recent measurements of the D\O\ experiment related to the search for new
phenomena beyond the Standard Model are reviewed. The new measurement of the
like-sign dimuon charge asymmetry reveals a 3.2 deviation from the SM
prediction, while the updated study of the decay
demonstrates a better agreement with the SM. All experimental results on the
violation in mixing are currently consistent with each other. The D\O\
collaboration has much more statistics to analyze, and all these results can be
significantly improved in the future.Comment: Proceedings of CKM2010, the 6th International Workshop on the CKM
Unitarity Triangle, University of Warwick, UK, 6-10 September 201
Heavy Flavour results from Tevatron
The CDF and D0 experiments finalize the analysis of their full statistics
collected in the collisions at a center-of-mass energy of TeV at the Fermilab Tevatron collider. This paper presents several new
results on the properties of hadrons containing heavy - and -quarks
obtained by both collaborations. These results include the search for the rare
decays (CDF), the study of CP asymmetry in decay (CDF, D0), the measurement of the like-sign dimuon charge
asymmetry (D0), the measurement of CP asymmetry in and decays (CDF), and the new measurement of the branching fraction (CDF). Both experiments still expect
to produce more results on the properties of heavy flavours.Comment: Contribution to the XLVIIth Rencontres de Moriond session devoted to
Electroweak Interactions and Unified Theorie
Common and private property to exhaustible resources: theoretical implications for economic growth
We develop two models of economic growth with exhaustible natural resources and consumers heterogeneous in time preferences. The first model assumes private ownership of natural resources. In the second model, natural resources are commonly owned and the resource extraction rate is chosen by voting. We show that if discount factors are given exogenously, the long-run rate of growth under private property is higher than or equal to that under common property. If the discount factors are formed endogenously, under some circumstances common property can result in a higher rate of growth than private property.natural resources, economic growth, voting, private property, common property
Growth and distribution in an AK-model with endogenous impatience
This paper combines two strands of the literature on inequality and distribution issues: the classical approach, which insists on the division of society into classes characterized by different saving propensities, and the social conflict approach, which considers that inequality inflicts direct and indirect costs to economic development. An endogenous-growth model is studied. We assume that each consumer's subjective discount factor is determined endogenously and depends on economic inequality through the following two channels. On the one hand, it is positively related to the individual consumer's relative wealth. On the other hand, it is negatively affected by a simple aggregate measure of social conflict. We show that, unlike models with exogenously given discount rates, steady state equilibria in our model is indeterminate and that the set of all equilibria is acontinuum which can be parameterized by a simple index of income inequality. The growth rate is ambiguously related to the inequality index. However, under some reasonable assumptions, the growth rate dependence on this index has an inverted U-shaped form.wealth distribution, intertemporal choice, growth, development
Spectral gaps of Schrödinger operators with periodic singular potentials
By using quasi-derivatives we develop a Fourier method for studying the spectral gaps of one dimensional Schrodinger operators with periodic singular potentials v. Our results reveal a close relationship between smoothness of potentials and spectral gap asymptotics under a priori assumption v is an element of H-loc(-1)(R). They extend and strengthen similar results proved in the classical case v is an element of L-loc(2)(R)
- …