Milnor-Witt Cycle Modules

We generalize Rost's theory of cycle modules using Milnor-Witt K-theory instead of the classical Milnor K-theory. We obtain a (quadratic) setting to study general cycle complexes and their (co)homology groups. The usual constructions are developed: proper pushfoward, (essentially) smooth pullback, long exact sequences, (coniveau) spectral sequences and products, as well as the homotopy invariance property; in addition, Gysin morphisms for lci maps are constructed. We prove an adjunction theorem linking our theory to Rost's.Comment: Accepted for publication in Journal of Pure and Applied Algebr

Search for supersymmetry in the multijet and missing transverse momentum final state: an analysis performed on 2.3 fb−1^{-1} of 13 TeV pp collision data collected with the CMS detector

We present results from a generic search for strongly produced supersymmetric particles in pp collisions in the multijet + missing transverse momentum final state. The data sample corresponds to 2.3 fb$^{-1}$ recorded by the CMS experiment at $\sqrt{s}=13$ TeV. This search is motivated by supersymmetry (SUSY) models that avoid fine-tuning of the higgs mass. In such models, certain strongly produced SUSY particles, including the gluino and top squark, are predicted to have masses on the order of a TeV. These particles also have some of the highest production cross sections in SUSY and give rise to final states with distinct, high jet multiplicity event signatures. To make the analysis sensitive to a wide range of such final states, events are classified by the number of jets, the scalar sum of the transverse momenta of the jets, the vector sum of the transverse momenta of the jets, and the number of b-tagged jets. No significant excess is observed beyond the standard model (SM) expectation. The results are interpreted as limits on simplified SUSY models. In these models, gluino masses as high as 1600 GeV are excluded at 95\% CL for scenarios with low $\tilde{\chi}_{1}^{0}$ mass, exceeding the most stringent limits set in by CMS at $\sqrt{s}=8$ TeV by more than 200 GeV in several simplified models.Comment: Presented at 51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 12 - 19 Mar 201

Partnerships and collaboration rebuild communities

In Pawtucket, Rhode Island, a university and community partnership used collaborative planning to strengthen a neighborhood. Marcia Marker Feld of the University of Rhode Island describes Woodlawn's Community Outreach Partnership Center Program.Universities and colleges - Rhode Island ; Economic development - Rhode Island

On Tax Competition: The (Un-)Expected Advantages of Decentralized Fiscal Autonomy

Tax competition is much discussed in the political arena these days. Although it is not a new phenomenon, the political pressure has increased to restrict tax competition by intensifying tax coordination and accomplishing tax harmonization. This particularly holds for the EU which has established a Code of Conduct for business taxation in 1997 and is about to establish a system of information exchange with respect to capital income taxation (allowing Austria, Belgium and Luxembourg a minimum source tax on capital income as an alternative). In 2001, the Commission has additionally released the so called ‚Ruding II‘-report in which a uniform corporate tax base with formulary apportionment is proposed for the EU. In addition, the OECD (1998) aims at stronger tax coordination among its members also favoring a system of information exchange. Such a system would necessarily involve the abolishment of (or the reduction of the strictness of) bank secrecy laws around the world (Feld 2002).

The European Constitution Project from the Perspective of Constitutional Political Economy

Three topics of a European constitution are discussed. First, basic arguments from constitutional political economy that aim at restricting representatives’ potential misuse of powers in a European Union with extended competencies are summarized. Since a European demos does not yet exist, an extension of competencies of the European Parliament is not sufficient in order to legitimate political decisions at the EU level. The introduction of elements of direct democracy in the European constitution would shape the creation of such a demos and lead to a stronger control of the European legislature and executive. Second, the introduction of direct democracy in the European constitution is proposed in order to reduce the European democratic deficit. Third, the creation of a European federation requires a more transparent assignment of competencies and rules to resolve conflicts between different centers of power. A European federation should be organized according to the principles of competitive federalism.European Constitutional Convention, Bill of Rights, Separation of Powers, Competitive Federalism, Referendums, European demos.

Anisotropic flow in the few collisions regime: application to bottomonia

Considering the kinetic Boltzmann equation in the limit of very few collisions, we study the evolution of the phase space distribution of bottomonia interacting with an expanding gas of massless partons. We investigate the scaling of the anisotropic flow coefficients on the initial eccentricities and the inverse Knudsen number, and compute their transverse momentum dependence.Comment: 4 pages, 1 figure, Presented by N.K. at Hot Quarks 2018 - Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions, Texel, The Netherlands, September 7-14 2018, Submitted to MDPI Proceedings. v2: Figure corrected + minor change