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Welcome to the ANL Local Wiki for the September joint Jamboree

Introduction

The joint BNL/ANL/LBNL Jamboree will take place from 9 Sep through 12 Sep.

This is a local wiki at ANL. The main Twiki for the Jamboree is HERE.

A lot more information can be found found HERE (how to's, where the data sets are.. etc.).

Agenda

Registration

What do do

The idea of the workshop, as you read HERE, is to prepare an analysis in the first two days of the workshop and then to spend the next two days actually doing the analysis on the Grid (and locally).

This means that by Thursday, you should have a job running on the Grid both on "data" and MC appropriate for doing an analysis. We will be using FDR2 samples as "data".

Depending on your level of familiarity with ATLAS software, we've prepared several instructions to get you started:

The Athena version for this Jamboree is 14.2.20

Beginner

1. Set up your ANL ASC account. The instructions are here under "Setting up account".
2. Set up and run athena "hello world". General instructions are also here under "Getting started with Athena".
3. Set up and run athena "Analysis Skeleton" on an AOD file and produce a root n-tuple. A general instruction from of how to do this can be found at the bottom of the "Getting started with Athena" page. MC and FDR2 AOD files to run over can be found in:

   • /data/nas2/users/ryoshida/sep_jamboree_mc/
   • /data/nas2/users/ryoshida/fdr08_run2/
   • /data/nas2/users/ryoshida/fdr08_run2c/ (FDR2c data)
   • Use ln -s command to link to the data files rather than copying it into your run directory. (or specify the full input file path in your AnalysisSkeleton_topOptions.py file.

4. Modify the default analysis and produce your own plots or n-tuple variable. Instructions and example routines can be found in Modify AnalysisSkeleton.
5. Run the same job on the Grid using pathena. The instructions are here.

Intermediate

If you've obtained a Z peak from the "beginner's" section, you have almost everything you need to do a Z cross-section measurement (among other things).

From here on, there are detailed examples for a Prompt Photon analysis also.

You can also use the official D3PD maker for top explained HERE.

Further items:

• Getting Luminosity for the FDR data.

You now should have enough information to do a cross-section analysis. The basic idea is: run Athena on both data and MC AODs; produce a flat n-tuple (or a D3PD); bring the n-tuple back to a local machine and use root to get your results.

The "data sets" (FDR2, FDR2c) and MC files appropriate to be used in your analysis are listed here.

Advanced

• Select events using TAGS (trigger and non-trigger) in your analysis locally. Instructions are under Using TAGs.

Further Analysis Topics:

• Use Athena Root Access (ARA) to analyze DPDs
• Use PROOF (only at BNL).
• SFrame