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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

Updates

Neil Delwadia

EWK Meeting

07/19/13


Zg zgg data sample
Zg/Zgg Data Sample


Zg zgg cross section measurements
Zg/Zgg Cross Section Measurements


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.


Problems
Problems

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


Plans
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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