2,113 research outputs found

    Discovering Technicolor at Hadron Colliders

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    Strategies are presented for discovering light, color-singlet technipions (pi_T) produced in association with a vector boson through s-channel technirho production, at the Tevatron and LHC. Signal and W+jets background were simulated including detector effects. Tagging of b-quarks from the pi_T -> bb decay is found to be important to reduce the W+jets background. Kinematic properties of signal and background events are significantly different and simple cuts can be used to further improve the signal to background ratio.Comment: 4 pages, 6 figures, LaTeX; to appear in the Proceedings of the 1996 DPF/DPB Summer Study (Snowmass 1996

    QCD at the Tevatron: Status and Prospects

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    I shall review the present status of Tevatron QCD studies, focusing on the production of jets, vector bosons, photons and heavy quarks. In general there is good agreement between the results of current calculational tools and the experimental data. The major areas of discrepancy arise when the input parton distributions become uncertain (for example, jets at high ETE_T) or when the momentum scales become relatively small (for example, bb production at low pTp_T). We can look forward to continued improvement in both calculations and measurements over the next decade. However, fully exploiting the power of the data will require considerable work, both from the experimentalists who must understand and publish all the systematic errors and their correlations, and from the phenomenologists who must understand the level of uncertainty in their calculations and in the parton distributions.Comment: Presented at the Fifth International Symposium on Radiative Corrections (RADCOR 2000), Carmel, CA, September 11-15, 2000. Replaced to correct spellin

    Future Accelerators (?)

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    I describe the future accelerator facilities that are currently foreseen for electroweak scale physics, neutrino physics, and nuclear structure. I will explore the physics justification for these machines, and suggest how the case for future accelerators can be made.Comment: Presented at the Conference on the Intersections of Particle and Nuclear Physics (CIPANP 2003), New York City, May 200

    Tests of Perturbative QCD and Jet Physics

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    I describe the current status of tests of perturbative QCD, using measurements of jet, photon, weak boson and heavy flavor production from the Tevatron, LEP and HERA. Measurements of the strong coupling constant are described, and I conclude with a "wish list" for the future.Comment: To appear in the Proceedings of the XIX International Symposium on Lepton and Photon Interactions at High Energies (LP99), Stanford University, August 1999 Replaced version corrects Ref [31] and adds an additional plot to Fig.2

    Summary and Highlights of the 14th Topical Conference on Hadron Collider Physics (HCP2002)

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    Conference summary presentation given at HCP2002, Karlsruhe, Germany, Sep 29-Oct 4, 2002.Comment: Version 2 has typographical correction

    Can a light technipion be discovered at the Tevatron if it decays to two gluons?

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    In multiscale and topcolor-assisted models of walking technicolor, light, spin-one technihadrons can exist with masses of a few hundred GeV; they are expected to decay as rho_T -> W pi_T. For technirho masses ~200 GeV and technipion masses ~100 GeV, the process pbar p -> rho_T -> W pi_T has a cross section of about a picobarn at the Tevatron. We demonstrate the detectability of this process with simulations appropriate to Run II conditions, for the challenging case where the technipion decays dominantly into two gluons.Comment: 11 pages, LaTeX, including figure

    High Transverse Momentum Physics at the Large Hadron Collider

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    This note summarizes the various physics studies done for the LHC. It concentrates on the processes involving the production of high mass states. Results are drawn from simulations performed by the CMS and ATLAS collaborations. The ability of the LHC to provide insight into the mechanism of electroweak symmetry breaking is exemplified.This note summarizes the various physics studies done for the LHC. It concentrates on the processes involving the production of high mass states. Results are drawn from simulations performed by the CMS and ATLAS collaborations. The ability of the LHC to provide insight into the mechanism of electroweak symmetry breaking is exemplified

    Scotland Chikwawa Health Initiative - improving health from community to hospital

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    The Scotland Chikwawa Health Initiative is a three year programme funded by the Scottish Executive International Development Fund which aims to achieve measurable reductions in major causes of disease and death in four villages within the Chikwawa District of Malawi alongside improving the hospital environment for the good of both staff and patients. The initiative has developed a holistic approach to health improvements through the provision of infrastructure at both health facilities and within communities, and training of government personnel and community volunteers. Specific areas targeted have included water and sanitation, maternal health, and communicable disease control with provision of training and materials to facilitate interventions and health education. At the end of the second year the programme has already seen reductions in diarrhoeal disease (30% overall in target communities), improved access to safe water, an increase in the uptake of growth monitoring and immunisations in children under the age of five years (15% increase since training volunteers), improved safe delivery of babies within the community (245 babies delivered safely in target communities with 25 referred due to complications) and increased community health activity (training and integration of village health committees, water point committees, traditional birthing attendants and health surveillance assistants). The programme hopes to act as a model for the District to follow in other communities to achieve it’s obligations under the Malawi Ministry of Health Essential Health Package
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