Feasibility studies for the measurement of time-like proton electromagnetic form factors from p¯ p→ μ+μ- at P ¯ ANDA at FAIR

This paper reports on Monte Carlo simulation results for future measurements of the moduli of time-like proton electromagnetic form factors, | GE| and | GM| , using the p¯ p→ μ+μ- reaction at P ¯ ANDA (FAIR). The electromagnetic form factors are fundamental quantities parameterizing the electric and magnetic structure of hadrons. This work estimates the statistical and total accuracy with which the form factors can be measured at P ¯ ANDA , using an analysis of simulated data within the PandaRoot software framework. The most crucial background channel is p¯ p→ π+π-, due to the very similar behavior of muons and pions in the detector. The suppression factors are evaluated for this and all other relevant background channels at different values of antiproton beam momentum. The signal/background separation is based on a multivariate analysis, using the Boosted Decision Trees method. An expected background subtraction is included in this study, based on realistic angular distributions of the background contribution. Systematic uncertainties are considered and the relative total uncertainties of the form factor measurements are presented

Theodoric of Triple-A-Ville, accounting professor: a one-act play for a doctoral seminar

A positivist methodological perspective that emphasises quantitative methods and is incapable of addressing complex social issues overwhelmingly characterises the body of literature published in mainstream accounting journals. The US system of graduate education in accounting is, in large part, responsible for the homogeneity of this paradigm and for the absence of any theoretical creativity and/or methodological innovation in accounting scholarship. Large accounting PhD programs have seized control of research activities by instituting restrictive norms, by creating barriers to intellectual dialogue, by exploiting the reward structures used to influence conformity, and by siphoning financial resources from major accounting firms to fund their mainstream research activities. This paper presents a script – based on an old Saturday Night Live skit – for use in a doctoral seminar as a 'launching point' for exploring perspectives other than the mainstream paradigm and poses a series of questions to facilitate discussion among the seminar participants.positivist paradigm limitations; actor-systems dynamics; accounting seminar materials; critical accounting research; accounting education; methodological innovation; alternative perspectives; accounting faculty shortage.