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Measurement of beauty production in deep inelastic scattering at HERA

ArXiv hep-ex/0405069 (2004)
Details from ArXiV

Inclusive Search for Anomalous Production of High-pT Like-Sign Lepton Pairs in Proton-Antiproton Collisions at sqrt{s}=1.8 TeV

ArXiv hep-ex/0405063 (2004)
Details from ArXiV

Substructure dependence of jet cross sections at HERA and determination of alphas

ArXiv hep-ex/0405065 (2004)

Authors:

the ZEUS Collaboration, S Chekanov
Details from ArXiV

Search for QCD-instanton induced events in deep inelastic ep scattering at HERA

European Physical Journal C 34:3 (2004) 255-265

Authors:

S Chekanov, M Derrick, D Krakauer, JH Loizides, S Magill, S Miglioranzi, B Musgrave, J Repond, R Yoshida, MCK Mattingly, P Antonioli, G Bari, M Basile, L Bellagamba, D Boscherini, A Bruni, G Bruni, G Cara Romeo, L Cifarelli, F Cindolo, A Contin, M Corradi, S De Pasquale, P Giusti, G Iacobucci, A Margotti, A Montanari, R Nania, F Palmonari, A Pesci, G Sartorelli, A Zichichi, G Aghuzumtsyan, D Bartsch, I Brock, S Goers, H Hartmann, E Hilger, P Irrgang, HP Jakob, O Kind, U Meyer, E Paul, J Rautenberg, R Renner, A Stifutkin, J Tandler, KC Voss, M Wang, A Weber, DS Bailey, NH Brook, JE Cole, GP Heath, T Namsoo, S Robins, M Wing, M Capua, A Mastroberardino, M Schioppa, G Susinno, JY Kim, YK Kim, JH Lee, IT Lim, MY Pac, A Caldwell, M Helbich, X Liu, B Mellado, Y Ning, S Paganis, Z Ren, WB Schmidke, F Sciulli, J Chwastowski, A Eskreys, J Figiel, A Galas, K Olkiewicz, P Stopa, L Zawiejski, L Adamczyk, T Bold, I Grabowska-Bold, D Kisielewska, AM Kowal, M Kowal, T Kowalski, M Przybycień, L Suszycki, D Szuba, J Szuba, A Kotański, W Slomiński, V Adler, U Behrens, I Bloch, K Borras, V Chiochia

Abstract:

A search for QCD-instanton-induced events in deep inelastic ep scattering has been performed with the ZEUS detector at the HERA collider, using data corresponding to an integrated luminosity of 38 pb-1. A kinematic range defined by cuts on the photon virtuality, Q2 > 120 GeV 2, and on the Bjorken scaling variable, x > 10-3, has been investigated. The QCD-instanton induced events were modelled by the Monte Carlo generator QCDINS. A background-independent, conservative 95% confidence level upper limit for the instanton cross section of 26 pb is obtained, to be compared with the theoretically expected value of 8.9pb.
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Thermal modeling of the ISIS H- ion source

Review of Scientific Instruments 75:5 PART II (2004) 1738-1740

Authors:

DC Faircloth, JWG Thomason, W Lau, S Yang

Abstract:

A comprehensive thermal model of the ISIS H- ion source was produced in order to understand the thermal characteristics of the same. In normal operation, the source temperatures were monitored using thermocouples for the cathode, anode, and source body. A transient study was performed using the steady state solution as a starting point. The initial two-dimensional transient thermal modeling indicated that the surface heating during the arc on period only had time to penetrate a few millimeters into the electrode mass.
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