Yukawa coupling corrections to the decay H+→W+A0H^+ \to W^+ A^0

We compute the fermionic radiative contributions to the decay $H^+ \to W^{+(*)} A^0$ in the framework of models with two Higgs doublets (2HDM), for the case of an on-shell and off-shell W. We show that, in the majority of the cases, current measurements of the $\rho$ parameter suggest $M_{H^{\pm}}\ge M_A$ and such decays could invalidate current charged Higgs searches or aid detection in the region $M_{H^{\pm}}\approx M_W$. We find that the radiative corrections may approach 50% for small values of $\tan\beta$.Comment: 24 pages, LaTeX, 8 PostScript figures, epsfig.st

On an elliptic equation with singular cylindrical growth

In the present paper, an elliptic equation with singular cylindrical grouwth, is considered. By using the Nehari manifold and mountain pass theorem, the existence of at least four distinct solutions is obtained. The result depends crucially on the parameters k, λ, g and u

Cooperation and Underlay Mode Selection in Cognitive Radio Network

In this research, we proposes a new method for cooperation and underlay mode selection in cognitive radio networks. We characterize the maximum achievable throughput of our proposed method of hybrid spectrum sharing. Hybrid spectrum sharing is assumed where the Secondary User (SU) can access the Primary User (PU) channel in two modes, underlay mode or cooperative mode with admission control. In addition to access the channel in the overlay mode, secondary user is allowed to occupy the channel currently occupied by the primary user but with small transmission power. Adding the underlay access modes attains more opportunities to the secondary user to transmit data. It is proposed that the secondary user can only exploits the underlay access when the channel of the primary user direct link is good or predicted to be in non-outage state. Therefore, the secondary user could switch between underlay spectrum sharing and cooperation with the primary user. Hybrid access is regulated through monitoring the state of the primary link. By observing the simulation results, the proposed model attains noticeable improvement in the system performance in terms of maximum secondary user throughput than the conventional cooperation and non-cooperation schemes

Justifying government accounting change through management needs: The case of Morocco

The paper’s purpose is to contribute to the understanding of why governments adopt accounting practices borrowed from private corporations. Based on a conceptual framework centered on NPM, the evidence for this research was obtained through a qualitative study of the government accounting reform in Morocco (Government accountants, public accounting auditors and accounting professionals). The thematic analysis of collected data through interviews and documents focuses on the management needs that underlie this change by looking at the motivations of said actors. The results highlighted show an overlap between the rational logic and the mimetic logic underlying this accounting choice

1-Decyl-6-nitro-1H-benzimidazol-2(3H)-on

The title mol­ecule, C17H25N3O3, is built up from fused six- and five-membered rings linked to a –C10H21 chain. The fused-ring system is essentially planar, the largest deviation from the mean plane being 0.009 (2) Å. The chain is roughly perpendic­ular to this plane, making a dihedral angle of 79.5 (2)°. In the crystal, N—H[cdots, three dots, centered]O hydrogen bonds build infinite chains along [010]. There are channels in the structure containing disordered hexane. The contribution of this solvent to the scattering power was suppressed using the SQUEEZE option in PLATON [Spek (2009 [triangle]). Acta Cryst. D65, 148–155]

Existence for Elliptic Equation Involving Decaying Cylindrical Potentials with Subcritical and Critical Exponent

We consider the existence of nontrivial solutions to elliptic equations with decaying cylindrical potentials and subcritical exponent. We will obtain a local minimizer by using Ekeland’s variational principle

Numerical solutions of two-point boundary value problems in Chebyshev series

Series expressed in terms of Chebyshev polynomials are applied using Lie series to the iterative solution of ordinary differential equations. After a discussion of initial value problems, the method is then used to solve two-point boundary value problems and an improved method of shooting type is derived and tested