Atlas MidWest Physics Group

1
Atlas Mid-West Physics Group

• Jimmy Proudfoot
• Ambreesh Gupta

Goals, Accomplishments Plans
2
ATLAS Today
These Guys Start Installing The Muon Chambers in
January
3
Goals
Make it straightforward for physicists to ask
physics questions not spend large amounts of
time understanding (impenetrable) software
tools Build on the technical expertise at many
collaborating institutions (to date ANL, U of
Chicago, Indiana U, U of Illinois, Michigan State
U, UTA, U of Wisconsin) Have a few (determined)
individuals pioneer the way and bring in our
colleagues
4
The Way Forward
Select some appropriate set of processes and use
them to acquire the skills as well as to develop
the tools to be applied to detector systems of
our direct concern (e.g. calibration of the Tile
Calorimeter, or understanding the jet energy
scale in gory detail.) Pick processes which have
an early physics impact and a long term future
(e.g. di-jet mass distribution which will lead
into a high mass Higgs search.) Ultimately take
at least one physics process all the way through
to publication level.
5
Some Specific Tasks

• To be successful we need to probe everything in
  the system
• to be comfortable with the tools (software,
  databases, event store)
• to be comfortable with the analysis environment
  (e.g. root root macros)
• to have some standard access scripts and analysis
  software to use as templates
• to have someone to talk to when things don't work
  as expected
•  We also need to have some specific objectives
  (e.g.)
• reconstruct and analyze data from the combined
  testbeam
• run Athena simulation for some particular physics
  process, reconstruct and store data at CERN,
  analyze results in ROOT locally
• Install and execute Athena development from a
  LOCAL computer system

6
US Atlas Mid-West Physics GroupWeb Pages
http//hep.uchicago.edu/atlas/usatlasmidwest/
Meetings, Agenda and Minutes Argonne meeting
November 16th, 2004 (New!) Indiana meeting
September 14th, 2004 3rd meeting July 23rd
2004 2nd meeting June 18th 2004 Chicago
meeting May 14th 2004
Interested Individuals Meetings, Agenda and
Minutes Tutorials on Running Athena
Reconstruction Analysis with Root Useful Data
Sets Identified Analyses Links
7
Identified Analyses (1)
8
Identified Analyses (2)
Flash Release Fred Luehring has agreed to work
on conversion finding
9
Accomplishments

• Ntuples from GRID (Amir Farbin, Rob Gardner)
• JetCalib framework (Ambreesh)
• Jet NtupleMaker framework (Tom LeCompte -in
  progress)
• Examples of running jobs on lxplus and at bnl
• Simple root analysis example (Ambreesh/Jimmy)
• Root macros (Amir, Martina, Kelby)
• Physics accomplishments - mainly in the area of
  SUSY, but we have some Z/g Jet balancing and
  di-gamma studies making headway

10
Index of /atlas07/atlas/datasamples(Amir Rob)

• A0.881/ 01-Dec-2004 1209 -
  A0/ 13-Dec-2004 1701 -
  A2/ 30-Nov-2004 1904 -
  A4_WminE/ 30-Nov-2004 1915 -
  A4_WminMu/ 30-Nov-2004 1917 -
  A4_WminTAU/ 30-Nov-2004 1917 -
  A4_WplusE/ 30-Nov-2004 1917 -
  A4_WplusMU/ 30-Nov-2004 1913 -
  A4_WplusTAU/ 30-Nov-2004 1914 -
  A8/ 13-Dec-2004 1746 -
  A9/ 30-Nov-2004 1905 -
  B2/ 30-Nov-2004 1905 -
• plus many others files, scripts to download from
  the web and pointers to descriptions of the
  datasets

11
JetCalib - Framework developed by Ambreesh
12
SUSY Plot- Ambreesh
Also studying the multiplicity, Et, and other
event topological variables.
13
Z/g - jet (JP)
Took 4 weeks to deal with problems from 8.X.Y -gt
9.0.Z castor
Took a few minutes once Amir made the Ntuples
weights,generator, parton shower matching ?
14
Plans for Rome and Beyond
What we accomplish for Rome will depend on the
availability of reconstructed DC2 data
We have a long list of topics being studied. All
are important. My guess is that by Rome we will
have studies based on full simulations for Jet
Scale, Resolution and Et calibration L2 trigger
for jets SUSY S/B Jet Multiplicity for several
processes Higgs Searches conversion finding