Urticaria Solare (λ 4000–5000A)1

Ĝ Ĝ Λ 11 Λ 12 Λ 21 Λ 21 Λ 22 Λ 22 Λ Λ̃ 0 0 Λ̂

In this paper we present an algorithm for pricing barrier options in one-dimensional Markov models. The approach rests on the construction of an approximating continuous-time Markov chain that closely follows the dynamics of the given Markov model. We illustrate the method by implementing it for a range of models, including a local Lévy process and a local volatility jump-diffusion. We also pro...

[Urticaria].

ma are cutaneous manifestations of localized edema. They are common skin diseases that typically result from the same pathophysiologic processes. The primary difference between the disorders is that urticaria is associated with localized edema involving the upper dermis, whereas angioedema is associated with localized edema involving deeper layers of the skin, as well as subcutaneous and submuc...

Urticaria

Rare Λ b → Λ l + l − Decays with Polarized Λ

We investigate the rare baryonic exclusive decays of Λb → Λll (l = e, μ, τ) with polarized Λ. Under the approximation of the heavy quark effective theory (HQET), in the standard model we derive the differential decay rates and various polarization asymmetries by including lepton mass effects. We find that with the long-distance effects the decay branching ratios are 5.3× 10 for Λb → Λll (l = e,...

Double Λ Hypernuclei and the Λ-λ Interaction. *

We approximate the double Λ hypernuclei by systems composed by two interacting Λ’s moving in the mean field potential created by the nuclear cores. The Λ-core potentials are adjusted to reproduce the binding energies of the corresponding single Λ hypernuclei [1]. A σ-ω meson exchange potential [2] is used for the Λ-Λ interaction. We apply both the Hartree-Fock (HF) and variational approximation...