TWiki> HEPProjects Web>FkwsGroup (revision 27)EditAttach

This page was thrown together quickly to provide some info about what we are doing these days. As an aside, the page with info on the UCSD written exam is here.

At this point, we are recruiting:

  • undergraduates
  • graduate students


This is where the focus is going now. Between 2004-2007, our focus was primarily on CMS computing, while doing physics only on CDF, where there was data. As we got closer to LHC data taking this has changed.

Professors Yagil and Wuerthwein work closely with Claudio Campagnari's group at UCSB, and Lothar Bauerdick's group at FNAL. At UCSD, our physics effort includes 5 graduate students, 5 post-docs, and two faculty as of February 2012.

CMS physics publications from our group on the 2011 data

The total integrated luminosity in 2011 was 4.7/fb as compared to 0.036/fb in 2010. The 2011 data taking period thus saw more than a x100 increase in luminosity. As of February 2012, the analyses are coming out of the approval process one after the other. We expect them to become public by mid march. I'll add in the links to the preprints as they become public.

  • Higgs Searches
  • WW cross section and anomalous triple gauge couplings
  • Searches for new physics:
    • tprime (search for a high mass sibling of the top quark)
    • Supersymmetry in the Z + MET + jets final state
    • Supersymmetry in the opposite sign dilepton final state
    • Supersymmetry in the same sign dilepton final state
    • Supersymmetry in the same sign dilepton plus 2 btags final state (search for stop, sbottom from gluino decay, and sbottom pair production, same sign top)
      • This also includes same sign top search update of the 2010 analysis, i.e. the one motivated by the top Afb anomaly in CDF.
    • Supersymmetry in the WZ + MET and ZZ + MET final state

In addition to these analyses with the 2011 data, we are also preparing for the 2012 data taking period.

  • We are adding a measurement of the top Afb at CMS in the dilepton final state. The goal is to either confirm or rule out the CDF top Afb anomaly. This is harder at CMS than at CDF because the initial state is proton proton. The only way an Afb can be measured is by looking into the high eta region where there is a significant q qbar production rate with qbar from sea quarks. The direction is given by the valence quark direction.
  • We are adding an attempt to search for stop pair production via making a precision measurement of top pair kinematics. The most sought after corner of phase space where low energy supersymmetry might be hiding is stop pair production for stop masses close to the top mass.
  • We will continue many but probably not all of our 2011 analyses also on the 2012 data. Details depend somewhat on student and post-doc interests.

CMS physics publications from our group on the 2010 data

During the first year (2010) of data taking with the LHC, our focus is on physics with dileptons. This lead to the following publications:

CMS Software & Computing

People active on CMS software and computing:

  • Bruce Thayre (Software & Computing Staff)
  • Warren Andrews (graduate)
  • Ian McNeil? (graduate)
  • James Letts (Researcher)
  • Terrence Martin (Software & Computing Staff)
  • Sanjay Padhi (Researcher)
  • Haifeng Pi (Researcher)
  • Jeff Dost (Software & Computing Staff)
  • Igor Sfiligoi (Software & Computing Staff)
  • Alya Tadel (Software & Computing Staff)
  • Matevz Tadel (Researcher)
  • Frank Wuerthwein (faculty)
  • Avi Yagil (faculty)

Publications on Computing by people in our group

Non-physics computing

Open Science Grid Computing

Our group is heavily involved in the Open Science Grid (OSG), a nationwide distributed computing effort aimed at providing Grid computing to the scietific community.

CMS heavily relies on OSG for its computing needs, so a lot of effort is shared between the two.

In this section we present only information that is OSG specific and may not have direct, short term use in CMS.

People active on OSG computing:

  • Jeffrey Dost (undergraduate)
  • Amer Sinha (undergraduate)
  • Terrence Martin (Computing Staff)
  • Sanjay Padhi (Researcher)
  • Haifeng Pi (Researcher)
  • Igor Sfiligoi (Computing Staff)
  • Frank Wuerthwein (faculty)

People that contributed in the past:

  • Amir Eibagi (undergraduate)
  • Jose Antonio Coarasa Perez (Computing Staff)
  • Rami Vanguri (undergraduate)
  • Christopher Theissen (undergraduate)
  • Warren Andrews (graduate)

Roles in OSG:

  • Member of the Executive Team (Frank Wuerthwein)
  • Leader of the Scalability, Reliability and Usability Area (Igor Sfiligoi)

Major subtasks:

  • Running a glideinWMS factory for OSG (Igor Sfiligoi,Jeffrey Dost)
  • Scalability and reliability of the storage components (Haifeng Pi)
  • Development of monitoring tools (Alison McCrea? )
  • Development of scalability tools (Igor Sfiligoi, J.A.P. Coaras)

While OSG usually does not develop software, the OSG scalability etc. work required tools that were not readily available, so new tools have to be developped.

The tools are hosted on sourceforge at


  • Using Condor glideins for distributed testing of network-facing services (IWHGA2010 - Preprint)


Our group is also involved in the development of Grid Workload Management Systems (WMS).

The current R&D effort is oriented toward the development of CorralWMS, an integration of glideinWMS and Corral. The effort is a collaboration of UCSD, Fermilab and ISI.

People active on CorralWMS? :

  • Alison McCrea? (undergraduate)
  • Miguel Alatorre (undergraduate)
  • Eli Moskowitz (undergraduate)
  • Ian McNeil? (graduate)
  • Igor Sfiligoi (Computing Staff)
  • Frank Wuerthwein (faculty)

People that contributed in the past:

  • Amir Eibagi (undergraduate)
  • Benjamin Christian Boynton (undergraduate)
  • Chris Murphy (graduate)
  • Jaehyeok Yoo (graduate)
  • Tim Kang (undergraduate)
  • Tony Myers (undergraduate)
  • Robert Chen (undergraduate)
  • Eliskhan Sheripon (undergraduate)


Our group has developped, and is maintaining, a Javascript-based library for reading an plotting RRD databases.

The package is hosted on sourceforge at

It is currently being used in glideinWMS and CorralWMS? (see above).

People involved from our group:

  • Alison McCrea? (undergraduate)
  • Igor Sfiligoi (Computing Staff)
  • Frank Wuerthwein (Faculty)

Advanced Network and Distributed Storage Laboratory

See here for details.

  • Haifeng Pi (Researcher)
  • Igor Sfiligoi (Computing Staff)
  • Frank Wuerthwein (Faculty)

Physics with CDF

The people (formerly) active on CDF:

  • Rami Vanguri (former undergraduate, now graduate @ UPenn)
  • Shih-Chieh Hsu (former graduate student, now Chamberlain Fellowship to work on Atlas at Berkeley since May 2008)
  • Matt Norman (former graduate student, now computing infrastructure developer with CMS)
  • Elliot Lipeles (former post-doc, starting faculty job at UPenn on June 1st 2008)
  • Mark Neubauer (former post-doc. Faculty at UIUC since Fall 2007)
  • fkw (faculty)

Bottom line, the CDF effort is winding down. All that's left to do is finish off a couple analyses, and write papers for them.

Public CDF Results from UCSD

-- FkW - 2010/04/16 -- FkW - 4 March 2010

Topic attachments
I Attachment Action Size Date Who Comment
elseodp iaria_adaptive11_sfiligoi.odp manage 309.3 K 2011/09/27 - 14:18 IgorSfiligoi Presentation at Adaptive 2011 by I. Sfiligoi - OpenDocument? version
pdfpdf iaria_adaptive11_sfiligoi.pdf manage 414.1 K 2011/09/27 - 14:17 IgorSfiligoi Presentation at Adative 2011 by I. Sfiligoi - PDF version
elseodp iaria_cloud11_sfiligoi.odp manage 213.5 K 2011/10/13 - 16:47 IgorSfiligoi Presentation at CouldComputing? 2011 by I. Sfiligoi - OpenDocument? version
pdfpdf iaria_cloud11_sfiligoi.pdf manage 397.4 K 2011/10/13 - 16:47 IgorSfiligoi Presentation at CouldComputing? 2011 by I. Sfiligoi - PDF version
Edit | Attach | Print version | History: r119 | r29 < r28 < r27 < r26 | Backlinks | Raw View | Raw edit | More topic actions...
Topic revision: r27 - 2012/02/17 - 15:29:37 - FkW
This site is powered by the TWiki collaboration platformCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback