In the framework of the impulse approximation we study the photoproduction of the hypertriton ΛH by using realistic He wave functions obtained as solutions of Faddeev equations with the Reid soft-core potential for different ΛH wave functions. We obtain relatively small cross sections of the order of 1 nb. We also find that the influence of Fermi motion is important, while the effect of differe...

Precise four-body calculations for ΛHe and 4 ΛH have been performed in the framework of the variational method with Jacobian-coordinate Gaussian-basis functions. All the rearrangement channels of both NNNΛ and NNNΣ are explicitly taken into account for the first time with the use of realistic NN and Y N interactions. The role of Λ-Σ conversion and the amount of the virtual Σ-component in ΛHe an...

In this paper, we consider the nonlinear eigenvalue problems u′′ + λh(t)f(u) = 0, 0 < t < 1, u(0) = 0, u(1) = m−2 X

Both the light hypernucleus ΛH 4 and the nucleus He have spin 0. The ratio R of the electron to muon rates for the pure Fermi transitions R = Γ (

and Applied Analysis 3 Applying the explicit Numerov-type method 2.1 to 2.3 , we obtain the following relation yn 1 − S ( H2 ) yn P ( H2 ) yn−1 0, H λh 2.4

Remark. The notation in condition (iii) reflects the possibility that ḣ might fail to exist at finitely many points. (Various alternative ways to deal with this possibility exist; none is completely satisfactory.) There is an obvious heierarchy in these concepts: every global minimizer also satisfies the criteria to lie in each of the local categories listed above. Any strong local minimizer is...

Kaon photoproduction on 3He, γ + 3He −→ K+ + ΛH, is studied in the framework of the impulse approximation. Realistic 3He wave functions obtained as solutions of Faddeev equations with the Reid soft-core potential are used along with a simple ΛH wave function. Results are compared for several elementary operator models, which can successfully describe the elementary kaon production off the proto...

In this report we investigate the Goldberger-Wise (GW) mechanism of radion stabilization with quartic potential on the hidden brane and quadratic potential on the visible brane. The advantage of our simplified scenario over the original GW mechanism is that the modulus potential can be evaluated for finite λv and λh. This enables us to probe how the modulus potential behaves over the entire ran...

This document is a survey of the four papers [λH], [Sch], [Com], [FandH]. It gives the relevant background and shows how the papers fit together to form a whole. Material from those papers is repeated only when necessary. As it stands the document is not intended for publication. However, if there is sufficient interest then I may rewrite it to include [λH], [Sch], [Com], [FandH] and so form a ...

For the weakly coupled heterotic string (WCHS) there is a well-known factorof twenty conflict between the minimum string coupling unification scale, ΛH ∼5×1017 GeV, and the projected MSSM gauge coupling unification scale, ΛU ∼2.5×1016 GeV, assuming an intermediate scale desert (ISD). From a bottom-upapproach, renormalization effects of intermediate scale MSSM-charged exotics...