1,773 research outputs found
New Charmonium Spectroscopy
No full textColangelo, Pietro. (2012). New Charmonium Spectroscopy. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/130068
Towards a holographic approach to the QCD phase diagram
No full textColangelo, Pietro. (2012). Towards a holographic approach to the QCD phase diagram. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/120283
On exclusive h→Vl+l− decays
No full textWe study a set of exclusive decay modes of the Standard Model Higgs boson into a vector meson and a dilepton pair: h→Vl+l−, with V=Υ,J/ψ,φ, and l=μ,τ, determining the decay rates, the dilepton mass spectra and the V longitudinal helicity fraction distributions. In the same framework, we analyze the exclusive modes into neutrino pairs View the MathML source. We also discuss the implications of the recent CMS and ATLAS results for the lepton flavor-changing process h→τ+μ− on the h→Vτ+μ− decay mode
Pietro Verri’s Contribution to the Economic Theory of the 18th Century: Commercial Society, Civil Society and Governance of the Economy
No full text'Count Pietro Verri (1728-97) - Schumpeter writes (History, p. 178) - - would have to be included in any list of the greatest economists'. Within the Milanese school, he certainly stands out, alongside with Cesare Beccaria, during one of the most interesting periods from a history of analysis point of view. Luigi Cossa's famous introduction to the study of political economy rates Pietro Verri to be inferior to Beccaria in ingenuity and scientific cultivation, but greatly to be ahead of him as an economist.1 This judgement by Cossa, in particular, seems to echo the relative position of the two men in the history of ideas, particularly after Beccaria's rise to fame with a book - On crimes and punishments - which had in fact been largely inspired by Verri himself and defended by him.2 It is proposed in the present paper to revisit some of the basic tenets of Pietro Verri's political economy, with more in view than dwell on specific intuitions and theorems: namely relate those to Verri's own - quite original - conception of the economy. The scholarly work of Pietro Verri - with a special reference to his Meditazioni sulla economia politica of 1771 - provides the first systematic contribution stemming from the quarters of Lombard enlightenment in the field of political economy, especially so if one considers that Cesare Beccaria's parallel work - namely his Elementi di economia pubblica, conceived and drafted at the same time as Verri's Meditazioni - would only be published posthumously several years later. From the vantage point afforded by Verri's political economy, we gain a considerably attractive view of the most significant elements and characteristic concepts of Lombard enlightenment during the latter half of the 18th century; Verri, moreover, as we shall see, builds on a number of them in a new and original way. This paper is aimed at discussing Verri's political economy mainly along two distinct, but related, lines. In the first place the conception of commercial society is considered such as it is treated by the author particularly in his Meditazioni. In this perspective the analysis of such issues as competition and the market or money and taxation occupy a central place. Secondly it will be necessary to emphasise that Verri's approach has little to do either with forms of pure economics on one side - largely yet to be born throughout the 18th century - or, on the other side, with such conceptions of the polis - contrariwise well alive among his own contemporaries - as are founded on a sovereign authority conceived to be situated above the law. What Verri's political economy ultimately amounts to is an economic conception of civil society. The latter has natural strong connections with his own fact-mindedness - emphasised by Schumpeter - as well as with his deep practical involvement in administrative affairs and in the reforming process taking place during the latter half of the 18th century in Milan. In our view, a thorough investigation along the mentioned lines is the precondition for an understanding of the intellectual stature and of the scholarly contribution of Pietro Verri. His main ground is distinctly analytical and only by appreciating his analysis is it possible to shed light on the meaning and intellectual significance also of his practical contributions. Moreover Verri's pronouncements on the criticism of despotic government, the relevance of intermediate powers or bodies and on multiple levels of governance will be examined in a new and original light, showing how close they are to the gist of his analysis.
QCD result for the hyperfine splitting M-Gamma(1S) - M-eta b and the value of alpha(s)
No full textThe measurement of the eta(b) mass, together with a QCD result for the hyperfine splitting E-HFS = M-Gamma(1S) - M-eta b, allows us to determine the strong coupling constant alpha(s) at a low energy scale. The result alpha(s)(M-Gamma(1S)) = 0.197 +/- 0.002 vertical bar(Delta EHFSexp) +/- 0.002 vertical bar(scheme) +/- 0.002 vertical bar delta +/- 0.006 vertical bar(delta mb) +/- 0.005 vertical bar(ho), alpha(s)(M-Z0) = 0.124 +/- 0.001 vertical bar(Delta EHFSexp) +/- 0.001 vertical bar(scheme) +/- 0.001 vertical bar(delta ) +/- 0.003 vertical bar(delta mb) +/- 0.002 vertical bar(ho) is compatible with the current world average of alpha(s) reported by the Particle Data Group, and shows that the experimental lowest-lying (b) over barb hyperfine splitting can be reproduced in terms of a perturbative and nonperturbative QCD contribution
About twin primes and distribution of primes
No full textThis paper give us a demonstration of twin primes conjecture using approximation of function �(iupsilon) that we introduce in section 6. Section 1-5 give us introduction to terminology and a clarification on (iupsilon) terms. In particular section
5 is really important because of its Lemma. Section 7 reassume foregoing explanations and it give us two theorems and one corollary;the theorem 7.2 give us exact approximation of twin primes counting function
QCD at Work 2012, Internationla Workshop in QCD, Lecce 18-21 giugno 2012
No full textThe sixth edition of QCD@Work, International Workshop on QCD, theoretical and experimental, will be held in Lecce (Italy), from 18th to 21st June 2012. The aim is to bring together theorists and experimentalists putting QCD to work in a variety of different arenas for a common discussion.
This edition of the workshop is jointly organized by the Physics Departments of Lecce and Bari Universities, and by Istituto Nazionale di Fisica Nucleare (INFN) with its Sections of Lecce and Bari. It will be held in the conference hall of the Rettorato of Università del Salento, in the ancient Monastero dei Carmelitani (Piazzetta Tancredi n.7)
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