Background effects on reconstructed WIMP couplings

In this talk, I presented effects of small, but non-negligible unrejected background events on the determinations of WIMP couplings/cross sections.Comment: 4 pages, 5 eps figures, to appear in the proceedings of the 12th International Conference on Topics in Astroparticle and Underground Physics (TAUP 2011), September 5-9, 2011, Munich, German

Concentric tubes cold-bonded by drawing and internal expansion

Metal tubes bonded together without heat application or brazing materials retain strength at elevated temperatures, and when subjected to constant or cyclic temperature gradients. Combination drawing and expansion process produces residual tangential tensile stress in the outer tube and tangential compressive stress in the inner tube

An improved generalized inverse algorithm for linear inequalities and its applications

Iterative, two-class algorithm for linear inequalitie

CP violation conditions in N-Higgs-doublet potentials

Conditions for CP violation in the scalar potential sector of general N-Higgs-doublet models (NHDMs) are analyzed from a group theoretical perspective. For the simplest two-Higgs-doublet model (2HDM) potential, a minimum set of conditions for explicit and spontaneous CP violation is presented. The conditions can be given a clear geometrical interpretation in terms of quantities in the adjoint representation of the basis transformation group for the two doublets. Such conditions depend on CP-odd pseudoscalar invariants. When the potential is CP invariant, the explicit procedure to reach the real CP-basis and the explicit CP transformation can also be obtained. The procedure to find the real basis and the conditions for CP violation are then extended to general NHDM potentials. The analysis becomes more involved and only a formal procedure to reach the real basis is found. Necessary conditions for CP invariance can still be formulated in terms of group invariants: the CP-odd generalized pseudoscalars. The problem can be completely solved for three Higgs-doublets.Comment: RevTeX4 used. Minor modifications, in particular, the parameter counting of $Z$. v3: Eqs.(28)-(31) correcte

Exposing the dressed quark's mass

This snapshot of recent progress in hadron physics made in connection with QCD's Dyson-Schwinger equations includes: a perspective on confinement and dynamical chiral symmetry breaking (DCSB); a pre'cis on the physics of in-hadron condensates; results on the hadron spectrum, including dressed-quark-core masses for the nucleon and Delta, their first radial excitations, and the parity-partners of these states; an illustration of the impact of DCSB on the electromagnetic pion form factor, thereby exemplifying how data can be used to chart the momentum-dependence of the dressed-quark mass function; and a prediction that F_1^{p,d}/F_1^{p,u} passes through zero at Q^2\approx 5m_N^2 owing to the presence of nonpointlike scalar and axial-vector diquark correlations in the nucleon.Comment: 10 pages, 4 figures, 2 tables. Contribution to the Proceedings of the 4th Workshop on Exclusive Reactions at High Momentum Transfer, Thomas Jefferson National Accelerator Facility Newport News, Virginia, 18-21 May 201

Resource consents - intangible fixed assets? Yes, but, too difficult by far!

Recent international attempts to draft an accounting standard (IAS38) which establishes the most widely acceptable treatment for intangible assets have sparked debate among standard setters, practising accountants and media analysts. Contentious issues include differing treatment for internally and externally generated intangible fixed assets, and the requirement for the existence of a ready market for the exchange of intangible assets. A further question has been identified, that of whether the ‘right to do something’, as in permission to act, is in itself an intangible asset and if so how should it be treated. An example of this is resource consents issued under the Resource Management Act 1991. The aim of this research was to investigate the nature of resource consents as intangible assets according to ICANZ disclosure and recognition standards and to determine the level of disclosure practised by companies listed on the New Zealand Stock Exchange. Disclosure of resource consent details as non-financial information would provide a significant proportion of the benefits involved in disclosing this class of asset while limiting the costs involved in the production of the information. We conclude that the details of resource consents held should be disclosed in the annual report as additional non-financial information, or as a separate schedule of resource consents held in the notes to the financial statements as per FRS1. This view is not addressed by the requirements of IAS38 or ED87 as this 'class of intangible assets' is not discussed at all. However, it can be argued that the omission of resource consents and other similar intangibles is contrary to the spirit of the true and fair view requirement of the Financial Reporting Act and Generally Accepted Accounting Principles (GAAP)