503 research outputs found

    Feedback: Baby Boomer Manager Offends Millennial Trainee

    Get PDF
    Hana Tan, a recently employed college graduate was in the midst of her training program when her manager\u27s manager, a fellow named Eric, humiliated her, in her view, in front of her training group by criticizing her use of a ponytail. She wondered, Should I quit? Do I have to take this stuff to get ahead? Should I report him? We discuss the incident in the context of phenomenology, Snyder\u27s self monitoring, Goffman\u27s presentation of self, embeddedness and the role of frank feedback

    Improved bounds on W-W' mixing with ATLAS resonant WZ production data at the LHC at s=13\sqrt{s}=13 TeV

    Get PDF
    New charged vector bosons W′W' decaying into gauge boson pairs WZWZ are predicted in many scenarios of new physics, including models with an extended gauge sector (EGM). Due to the large variety of models (other unification groups, models with Supersymmetry, Little Higgs Models, Extra Dimensions) the more general EGM approach is here considered. For what concerns W′W'-production, these models are parametrised by two parameters, the W′W^\prime mass MW′M_{W^\prime} and the WW-W′W^\prime mixing parameter ξ\xi. The diboson WZWZ production allows to place stringent constraints on this mixing angle and the W′W' mass, which we determine and present for the first time by using data from pppp collisions at s=13\sqrt{s}=13 TeV recorded by the ATLAS detector at the CERN LHC, with integrated luminosity of 36.1 fb−1^{-1}. By comparing the experimental limits to the theoretical predictions for the total cross section of W′W' resonant production and its subsequent decay into WZWZ pairs, we show that the derived constraints on the mixing angle for the benchmark model are rather small, between 10−410^{-4} and 10−310^{-3}, i.e., greatly improved with respect to those derived from the global analysis of electroweak data which yield ξ∼10−2\xi\sim 10^{-2}. We combine the limits derived from WZWZ production data with those obtained from the W′→eνW'\to e\nu process in order to significantly extend the exclusion region in the MW′M_{W'}-ξ\xi parameter plane and obtain the most stringent exclusion limits to date. We present the combined allowed parameter space for the EGM W′W' boson after incorporating indirect constraints from low energy electroweak data, direct search constraints from Tevatron and from the LHC Run I with 7 and 8 TeV as well as at Run II with 13 TeV data.Comment: 13 pages, 5 figures. arXiv admin note: text overlap with arXiv:1809.08933. v2: References added, version to appear in PR

    Legitimizing radical new medical services

    Get PDF
    Physicians enjoy considerable liberty in the creation of entrepreneurial ventures in the new frontiers of medicine. Professional societies may opine about a new procedure but professionals may feel free to ignore their counsel as well. Two case studies are used to discuss this method of new venture creation; the cases are trait selection through pre-implantation genetic diagnosis and female cosmetic genital surgery (FCGS), both controversial practices. We discuss the ethics and legitimacy of both and how one can use theory to analyze whether or not these are legitimate businesses and how to develop them

    Contact interactions and polarized beams at a Linear Collider

    Full text link
    We discuss contact-interaction searches in the processes e^+e^-\to \mu^+\mu^-, b\bar{b} and c\bar{c} at an e^+e^- Linear Collider with c.m. energy \sqrt{s}=0.5 TeV and with longitudinally polarized beams. The measurement of polarized cross sections allows to study the individual helicity cross sections, and consequently to derive separate, model-independent, constraints on the four-fermion contact interaction couplings. We evaluate the reach on those parameters foreseeable in the case of both electron and positron polarization fixed at some reference values, and compare it with the situation where only electron polarization is available. The analysis is based on polarized integrated cross sections with optimal kinematical cuts that can improve the sensitivity to the relevant couplings. While electron polarization would by itself allow such an analysis, the additional positron polarization (with no loss of beam intensity) and optimization can have a crucial role in improving the sensitivity to the new interactions.Comment: 13 pages, LaTeX, including figure

    Signals of Warped Extra Dimensions at the LHC

    Full text link
    We discuss the signatures of the spin-2 graviton excitations predicted by the Randall-Sundrum model with one warped extra dimension, in dilepton and diphoton production at LHC. By using a specific angular analysis, we assess the ranges in mass and coupling constant where such gravitons can be discriminated against competitor spin-1 and spin-0 objects, that potentially could manifest themselves in these processes with the same mass and rate of events. Depending on the value of the coupling constant to quarks and leptons, the numerical results indicate graviton identification mass ranges up to 1.1-2.4 TeV and 1.6-3.2 TeV for LHC nominal energy of 14 TeV and time-integrated luminosity of 10 and 100~fb−1{\rm fb}^{-1}, respectively.Comment: 8 pages, Talk given at QCD@Work - International Workshop on QCD - Theory and Experiment, 20 - 23 June, 2010, Martina Franca Ital

    Center-Edge Asymmetry at Hadron Colliders

    Full text link
    We investigate the possibility of using the center-edge asymmetry to distinguish graviton exchange from other new physics effects at hadron colliders. Specifically, we study lepton-pair production within the ADD and RS scenarios. At the Tevatron, the graviton-Z interference is the most important contribution to the center-edge asymmetry, whereas at the LHC, the dominant contribution comes from gluon fusion via graviton exchange, which has no analogue at e^+ e^- colliders. We find that spin-2 and spin-1 exchange can be distinguished up to an ADD cut-off scale, M_H, of about 5 TeV, at the 95% CL. In the RS scenario, spin-2 resonances can be identified in most of the favored parameter space.Comment: 23 pages, including figure

    Update on the CP-Violating Inert-Doublet Model

    Full text link
    We have updated a recently proposed extension of the Inert Doublet Model. The extension amounts to the addition of an extra non-inert scalar doublet. The model thus offers a possibility of CP violation in the scalar sector and a candidate for the Dark Matter. The recent XENON100 direct-detection experiment excludes a considerable range of medium-low dark-matter masses, leaving only as viable very low masses of order 5-10 GeV, as well as the regions from \sim 60 to \sim 110 GeV, and above \sim 530 GeV. For favorable parameter regions one may observe related long-lived charged particles produced at the LHC.Comment: Contribution to PoS Proceedings, The XXth International Workshop High Energy Physics and Quantum Field Theory, September 24 - October 1, 2011, Sochi, Russi
    • …
    corecore