NSA (North/South America) ATLAS Top Physics Working Group

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Mandate

This group exist to coordinate and support top physics analysis activities based in the U.S. It is not meant to be a parallel management to that of CERN Top WG, rather it will try to strengthen the analysis experience in the U.S. through local activities.

The main activity right now is the bi-weekly meeting organized on Wednesday. Agenda is here.

Ongoing analyses

• QCD Background in Electron + Jets tT at D0 (Scott Snyder, BNL)
• Ditop resonance (Francesco Spano, Columbia)
• Pre-commissioning analysis (LBL)
• Ditop resonance (Dilip Kumar Jana, Pat Skubic et al, Oklahoma)
• Dilepton analysis (Razzak Meera Lebbai, Pat Skubic et al, Oklahoma)
• Lepton+jets analysis (M. Saleem, Pat Skubic et al, Oklahoma)
• QCD background in Muon + Jets (Robert Harrington, Boston)
• Dilepton tT cross-section analysis (Paul Tipton, Andrey Loginov et al, Yale)
• Dilepton tT cross-section analysis (Akira Shibata, Kyle Cranmer, NYU)
• Spin correlation of tT in e/mu channel (S. shrestha, K. Yamanaka, J. Cochran, ISU)
• tT+jets (F. Rizatdinova, Oklahoma State)
• FCNC tT (J. Brau, J. Searcy, Oregon)

New contributors

Past activities

CSC analysis

• Single top t-channel analysis (Akira Shibata, NYU)
• Single top analysis (Jim Cochran/Kyoko Yamanaka/Nathan Triplett, Iowa State)

Suggested topics that are uncovered

• Top mass measurement
• tT cross section with b-tagging (especially, semileptonic tagging)
• Differential cross section
• Charged higgs decay from top
• tT plus jets
• Data-driven background estimation of QCD in dilepton decay (c.f. Scott).
• Data-driven background estimation of W+jets, in particular, strategy for understanding the systematics.
• Fast turn-around analysis using Atlfast-I.
• Understanding early trigger performance.
• tT->tau+X anlaysis

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Major updates: -- Main.akira - 30 Jun 2008
-- TWikiAdminGroup - 03 Dec 2008