A narrow scalar resonance at 325 GeV?

We propose to identify the excess of events with four charged leptons at E\sim 325\GeV seen by the CDF and CMS Collaborations with a new `sterile' scalar particle characterized by a very narrow resonance of the same height and branching ratios as the Standard Model Higgs boson, as predicted in the framework of the so-called Conformal Standard ModelComment: 4 pages, 2 figures, text and references correcte

Results of Soft-Diffraction at LHCb

The LHCb detector with its unique pseudorapidity coverage allows to perform soft-QCD measurements in the kinematic forward region where QCD models have large uncertainties. Selected analyses related to soft-Diffraction will be summarised in these proceedings. Energy flow and charged particle multiplicity have been measured separately in different event classes. They give input for modelling the underlying event in pp collisions. Prompt hadron ratios are important for hadronisation models, while the $\bar p/p$ ratio is a good observable to test models of baryon number transport.Comment: Presented at EDS Blois 2013 (arXiv:1309.5705

Superconducting ''transistor'' acts as high-speed switch

Cryogenic, three-terminal device yields current-voltage characteristics of ordinary transistor. Device consists of two superconducting tin rods in a crossed-wire geometry, separated by a thin gold film. New construction technique is described and possible applications are discussed

Symmetries of higher-order string gravity actions

In this paper we explicitly prove the invariance of the time-dependent string gravity Lagrangian with up to four derivatives under the global $O(d,d)$ symmetry.Comment: 10 pages, LATEX file, several misprints corrected, two references added, the final version submitted to Phys.Lett.

Faculty Exhibition 2004

This is the catalogue of the exhibition "Faculty Exhibition" at Boston University Art Gallery

Chitra Banerjee Divakaruni: A Bibliographic Review of Resources for Teachers

As a poet, short story writer, novelist and essayist, Divakaruni has gained a wide national and international audience. Her writing in multiple genres addresses cross-cultural complexities of self-identity, family relationships and community values. Most notable has been her continuing concern with these issues in connection with the experiences of Indian and Indian American women. Reviews of her work emphasize her boldly imaginative style of story-telling, poetic sensibility, creativity in genre crossing, and commitment to breaking down boundaries between serious and popular literature

T-Duality and Two-Loop Renormalization Flows

Manifest T-duality covariance of the one-loop renormalization group flows is shown for a generic bosonic sigma model with an abelian isometry, by referring a set of previously derived consistency conditions to the tangent space of the target. For a restricted background, T-duality transformations are then studied at the next order, and the ensuing consistency conditions are found to be satisfied by the two-loop Weyl anomaly coefficients of the model. This represents an extremely non-trivial test of the covariance of renormalization group flows under T-duality, and a stronger condition than T-duality invariance of the string background effective action.Comment: 18 pp., plain TeX + harvmac. Typos in Eqs. (4.3), (4.5) and (4.7) corrected, and references adde

Relationship Quality in the Context of Computer-Mediated Communication - A social constructionist approach

This paper contributes to possible answers to the question: What are the effects of computermediated communication on relationship qualities in organizations? To answer this question without oversimplifying the phenomena an adequate research methodology has to be found. First, the interrelationship between computer-mediated communication (CMC) and relationship quality is reviewed. CMC-theory will be described from three main perspectives and the risks and chances for relationship quality will be shown. The review indicates that most studies in the field are founded on a positivistic basis. Relationships are treated as static dyads neglecting contextual factors. Thus, the insight into relational processes in computerized environments remains limited. As an alternative a research methodology based on the epistemological stance of social constructionism is proposed. It will be explained, how the researchers’ view can be broadened by applying the method of the ‘narrative interview’ in practice based studies in computer-mediated contexts. In the concluding part, the contribution of this approach to research and practice will be discussed.Computer-mediated communication, relationship quality, social constructionism

Why Do Countries Peg the Way They Peg? The Determinants of Anchor Currency Choice

Conditional on choosing a pegged exchange rate regime, what determines the currency to which countries peg or “anchor” their exchange rate? This paper aims to answer this question using a panel multinomial logit framework, covering more than 100 countries for the period 1980-1998. We find that trade network externalities are a key determinant of anchor currency choice, implying that there are multiple steady states for the distribution of anchor currencies in the international monetary system. Other factors found to be related to anchor currency choice include the symmetry of output co-movement, the currency denomination of debt, and legal or colonial origins