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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 - PowerPoint PPT Presentation
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CDF Introduction
Joseph Kroll – Penn DOE Site Visit – 10 August 2006
Context of these presentations
Past year CDF has focused on analyzing 1 fb-1 of data
Penn group has focused on data analysis as well
Penn CDF Group has made major contributions to CDF II& made a major investment in Run II
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 IIFocus on flagship physics (mt, ms) and discoveryContinuing contributions to operations
• 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)
Our Investment in Run II
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
Past Personnel Contributing to Progress Report
Post-docs: A. Kraan – now a EU Marie Curie Fellow P. Wittich – now an assistant professor at Cornell
Students: K. Hahn (now post-doc at MIT on CMS) A. Kovalev (investment company) D. Usynin (investment company)
3 dissertations completed this past year
Contributions to Run IIb
• 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
20K contributed from UPenn
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)
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
Physics Highlights
• 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
More details in presentations that follow
B PhysicsHigh pT physics
Focus on flagship measurementsContinue search for new physics
Publications
Primary authors or major contributors to nine publications:
First PRL from Run IIFirst high pT PRL
PhD: C. Chen
Publications From Progress Report
1st precise measurement of ms
PhD: K. Hahn
PhD: A. Kovalev
• 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
Penn’s Role in Bs Oscillations
Hughes
Azfar
Long, Gao
Chen
Usynin
PhD Students
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 lotsof physics out of Run II data