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Updates

Updates. Neil Delwadia EWK Meeting 07/19/13. Zg / Zgg Data Sample. Zg / Zgg Cross Section Measurements. Z g and Z gg Summary and Plans. Preliminary measurements of p + p -> Z/ g + g + X in the electron and muon channels agree well with the Standard Model:

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Updates

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  1. Updates Neil Delwadia EWK Meeting 07/19/13

  2. Zg/Zgg Data Sample

  3. Zg/Zgg Cross Section Measurements

  4. Zg and Zgg Summary and Plans • Preliminary measurements of p + p -> Z/g + g + X in the electron and muon channels agree well with the Standard Model: • Kinematic distributions are compared to the LO SHEPRA MC. • Cross sections are compared to NLO MCFM predictions. • Measurements are in progress for events with two photons associated with Z bosons: p + p -> Z/g + g + g + X. • Preliminary cross sections agree with NLO SM predictions • using MCFM. • Plans are to unfold kinematic distributions in order to make • direct comparisons to NLO predictions. • These data will then be used to set limits on the aTGC and aQGCof Z bosons to photons.

  5. Problems • Still have to figure out statistical error associated with Al’s cross section program

  6. Plans • Figure out Al’s program • Learn how to obtain more precise systematic error with MCFM program • Continue to evaluate systematic error associated with Zg cross sections • Eventually move on to Zgg predictions?

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