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CDF Introduction

CDF Introduction. Joseph Kroll – Penn DOE Site Visit – 10 August 2006. Context of these presentations. Penn CDF Group has made major contributions to CDF II & made a major investment in Run II. Past year CDF has focused on analyzing 1 fb -1 of data

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CDF Introduction

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  1. CDF Introduction Joseph Kroll – Penn DOE Site Visit – 10 August 2006

  2. Context of these presentations Penn CDF Group has made major contributions to CDF II & made a major investment in Run II Past year CDF has focused on analyzing 1 fb-1 of data Penn group has focused on data analysis as well • The Tevatron back in operation after 14 week shutdown: • > 1.7 fb-1 delivered to both CDF & DØ • pbar stacking almost back to pre-shutdown perform. • back up to peak luminosity performance • > 4 fb-1 is feasible Penn committed to capitalizing on our investment in Run II Focus on flagship physics (mt, ms) and discovery Continuing contributions to operations

  3. Our Investment in Run II • Hardware • Run IIa: COT, TOF, Calorimeter calibration electronics • Run IIb: Level 2 trigger upgrade • personnel devoted to proposing, designing, constructing, installing, commissioning above hardware • Operations • maintaining above hardware • continued leadership roles and assume new leadership roles • more responsibilities: trigger, COT tracking, Si alignment, calibrations • Data analysis & Physics • Primary contributions to flagship analyses unique to Run II • top physics, Bs mixing, SUSY & Higgs searches • Primary authors of 1st PRL (D cross-section) and 1st high pT PRL (top cross-section from dileptons)

  4. Current Personnel Faculty: J. Kroll, N. Lockyer, E. Thomson, H. H. Williams Post-docs: A. Canepa (9/06), A. Heijboer, C. Neu, D. Whiteson Graduate Students: J. Keung (Sum. 07), E. Pianori (Spr. 07), T. Rodriguez, Y. Tu Staff:J. Heinrich, P. Keener, W. Kononenko, G. Mayers, M. N. Newcomer, R. Van Berg

  5. Past Personnel Contributing to Progress Report Post-docs: A. Kraan – now a EU Marie Curie Fellow P. Wittich – now an assistant professor at Cornell 3 dissertations completed this past year Students: K. Hahn (now post-doc at MIT on CMS) A. Kovalev (investment company) D. Usynin (investment company)

  6. Contributions to Run IIb 20K contributed from UPenn • Trigger Level 2 decision crate upgrade • responsible for back-end of system including trigger decision • initial leadership from Peter Wittich • Daniel Whiteson (PD) & Kristian Hahn (GS) drove back-end effort • help from Paul Keener (staff) here • Chris Neu (PD) shared responsibility for reCES part of system • required splitting optical signals using active splitters • Replaced alpha based Run IIa system in April 2005 • Duplicate system runs parasitically  allows real time development without using beam time • participating in routine operation (pager responsibilities) • D. Whiteson: Level 2 Software Coordinator

  7. Contributions to Operations (continued) • On-line beam profile monitoring with SVT • Chris Neu working with Luciano Ristori (then CDF co-spokesperson) • Silicon alignment • Aart Heijboer took over from Ray Culbertson (FNAL) in Fall 2004 • Calibration coordination • Aafke Kraan: Mar. 2005 to Mar. 2006 • Daniel Whiteson: Apr. 2006 to present • TOF pager duties • Data taking shifts (Aces, Scico’s)

  8. Leadership in Physics • N. Lockyer: co-spokesperson – 2002 to 2004 • J. Kroll: co-leader Bs mixing effort – 2004 to present • E. Thomson: co-leader top group – Apr. 2004 to Apr. 2006 • Aart Heijboer: co-leader BPAK subgroup • Chris Neu: co-leader b-tag subgroup – Nov. 2005 to present • Daniel Whiteson: • top MC coordinator – Aug. 2004 to Mar. 2006 • co-leader top mass subgroup – began Aug. 2006 • Joel Heinrich: member CDF statistics committee

  9. top major leadership role cross section measurements mass using matrix el. method W Helicity SUSY dilepton searches (e) adding  leptons Higgs search Wbb, Z!bb, WZ b-tagging for top and Higgs Bs flavor oscillations major leadership role leading role in analysis of significance, combining channels, measuring ms used analytic methods to speed up fit by orders of magnitude B fragmentation studies crucial for flavor tagging too Physics Highlights More details in presentations that follow High pT physics B Physics Focus on flagship measurements Continue search for new physics

  10. Publications Primary authors or major contributors to nine publications: First PRL from Run II First high pT PRL PhD: C. Chen

  11. Publications From Progress Report PhD: K. Hahn PhD: A. Kovalev 1st precise measurement of ms

  12. Penn’s Role in Bs Oscillations PhD Students • Major role – both in leadership and analysis • Run I • 1st fully reconstructed B meson at hadron collider • 1st measurement of Bs lifetime in J/ final state • Development of b flavor identification techniques for  md & sin2 • Run II • TOF • charm cross section • established method for developing opposite-side b flavor tags • contributions to trigger strategy and trigger improvements • fragmentation studies for same-side flavor tags • central role in analysis, primary authors of publication Hughes Azfar Long, Gao Chen Usynin

  13. Plans for Upcoming Year • Physics • top (Neu, Thomson, Williams, Whiteson) • cross-section • mass • Wbb • Bs mixing (Heijboer, Kroll) • SUSY searches & EW (Canepa, Keung, Lockyer, Pianori, Rodriguez, Tu) • Higgs (Neu) • Operations • TOF (Heijboer) • L2 (Neu, Whiteson) • Calibrations (Whiteson) • Si alignment (Heijboer) Committed to getting lots of physics out of Run II data

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