One-Loop Electroweak Corrections to the Muon Anomalous Magnetic Moment Using the Pinch Technique

The definition of the physical properties of particles in perturbative gauge theories must satisfy gauge invariance as a requisite. The Pinch Technique provides a framework to define the electromagnetic form factors and the electromagnetic static properties of fundamental particles in a consistent and gauge-invariant form. We apply a simple prescription derived in this formalism to check the calculation of the gauge-invariant one-loop bosonic electroweak corrections to the muon anomalous magnetic moment.Comment: 6 pages and 1 eps figur

Rare top quark decays in extended models

Flavor changing neutral currents (FCNC) decays t to H + c, t to Z + c, and H to t + bar{c} are discussed in the context of Alternative Left-Right symmetric Models (ALRM) with extra isosinglet heavy fermions where FCNC decays may take place at tree-level and are only suppressed by the mixing between ordinary top and charm quarks, which is poorly constraint by current experimental values. The non-manifest case is also briefly discussed.Comment: Contributed talk given at the 10th Mexican Workhop on Particles and Fields, Morelia, Michoacan, Mexico, 7-12 Nov 200

Charge and Magnetic Moment of the Neutrino in the Background Field Method and in the Linear R_xi^L Gauge

We present a computation of the charge and the magnetic moment of the neutrino in the recently developed electro-weak Background Field Method and in the linear $R_{\xi}^L$ gauge. First, we deduce a formal Ward-Takahashi identity which implies the immediate cancellation of the neutrino electric charge. This Ward-Takahashi identity is as simple as that for QED. The computation of the (proper and improper) one loop vertex diagrams contributing to the neutrino electric charge is also presented in an arbitrary gauge, checking in this way the Ward-Takahashi identity previously obtained. Finally, the calculation of the magnetic moment of the neutrino, in the minimal extension of the Standard Model with massive Dirac neutrinos, is presented, showing its gauge parameter and gauge structure independence explicitly.Comment: Latex, 19 pages, 9 PS and 10 EPS figures. One reference added. Appendix B modified and Appendices C-E eliminated. To be published in Eur. Phys. J.

On the charge radius of the neutrino

Using the pinch technique we construct at one-loop order a neutrino charge radius, which is finite, depends neither on the gauge-fixing parameter nor on the gauge-fixing scheme employed, and is process-independent. This definition stems solely from an effective proper photon-neutrino one-loop vertex, with no reference to box or self-energy contributions. The role of the $WW$ box in this construction is critically examined. In particular it is shown that the exclusion of the effective WW box from the definition of the neutrino charge radius is not a matter of convention but is in fact dynamically realized when the target-fermions are right-handedly polarized. In this way we obtain a unique decomposition of effective self-energies, vertices, and boxes, which separately respect electroweak gauge invariance. We elaborate on the tree-level origin of the mechanism which enforces at one-loop level massive cancellations among the longitudinal momenta appearing in the Feynman diagrams, and in particular those associated with the non-abelian character of the theory. Various issues related to the known connection between the pinch technique and the Background Field Method are further clarified. Explicit closed expressions for the neutrino charge radius are reported.Comment: 26 pages, plain Latex, 7 Figures in a separate ps fil

An Investigation Of Strategic Decision Making In Service Marketing Through Case Study Development And Analysis

Through the collaborative efforts of an undergraduate student and a professor of marketing, this paper focuses on a case study and corresponding teaching notes developed as a final component of an independent study in service marketing.  The case utilizes the hospitality industry as the template for analysis of the appropriateness of marketing strategies in a growth industry with a corresponding high level of embedded competition.  The paper demonstrates how the professor utilized the development of the case study as a pedagogical methodology to provide the independent study student with a transition to the higher levels of a learning taxonomy while simultaneously developing a comprehensive evaluation instrument to foster a higher level of learning for students enrolled in the introductory undergraduate marketing course.

College Marketing and the Academic Structure: Incompatibility?

This paper examines how the consumer model of education has challenged the academic structure in higher education. Through modeling the interaction of institutional structures and the move to treat students as consumers, forces that promote the decay of academic standards are identified. The article then explores how modification of current structures to facilitate development of a student as “partner in production” model of education can inoculate the academic system and promote student learning. It also suggests why the move by accrediting bodies to require outcomes assessment will not improve learning outcomes until the faculty evaluation, tenure criteria, and student performance measures are properly aligned

The College Core: Why A Valuable Curricular Component Can Be A Challenge To The Provision Of Services That Enhance School Of Business Student Outcomes

Out-of-class faculty services, such as advising, career advice, and lecture series, stimulate student interest, retention, and graduation rates. Through modeling the interrelationships between the allocation of faculty lines and a college's general education core requirements, its impact on the provision of out-of-class faculty services is explored. The results indicate that a professional school’s undergraduate students will have less access to these services relative to their liberal arts peers. In addition, data envelopment analysis is applied to support the notion that the higher satisfaction often expressed by liberal arts students is not necessarily an accurate indicator of the relative quality of the services being provided by the various schools of the college but rather the resources dedicated to the provision of faculty out-of-class services

Form Over Substance: Learning Objectives In The Business Core

While members of the business faculty community have been advocating active learning in the classroom, it appears that textbooks encourage learning from a passive perspective.  A review of learning objectives from 16 textbooks used in Financial Accounting, Managerial Accounting, Finance, and Marketing demonstrates a focus on basically the same set of primary verbs at a low cognitive level. These low cognitive level verbs differ in substance from the expectations contained in the end-of-the-chapter materials.  In a world of assessment, the authors are concerned that the textbook learning objectives seem to focus on the form of technical content and not the substance of student learning