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Rel 17 Wγ/Zγ analysis

Rel 17 Wγ/Zγ analysis. Zhijun Liang. Review of rel 16 analysis. Exclusive 0jet measurement is consistent with SM NLO Observe high order effect in Wγ data (NNLO and beyond) 30~50% higher in high pT Inclusive measurement in Wγ. Anomalous coupling limit in Wγ.

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Rel 17 Wγ/Zγ analysis

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  1. Rel 17 Wγ/Zγ analysis Zhijun Liang

  2. Review of rel 16 analysis • Exclusive 0jet measurement is consistent with SM NLO • Observe high order effect in Wγ data (NNLO and beyond) • 30~50% higher in high pT Inclusive measurement in Wγ

  3. Anomalous coupling limit in Wγ Use highest pT bin in fiducial measurement for ATGC study • Number of expected events ATGC Vs ATGC parameter can be • Written as Δκ=0.4 (0jet) SM (0jet)

  4. Result of ATGC in Wγ

  5. Result of ATGC in Zγ

  6. Summary of rel 16 analysis • Fiducial measurement for Wγ/Zγ based on 1fb-1 2011 ATLASdata • Exclusive 0jet measurement is consistent with SM NLO • Observe high order effect in Wγ data (NNLO and beyond) • 30~50% higher in high pT Inclusive measurement in Wγ • Anomous coupling limit for triple boson coupling based on high pT fiducial measurement • Wγ: better limit than existing CMS/D0/CDF result • Zγ: • better limit than existing CMS result • Existing CDF/D0 limit is better than our result • Need to include Z->vvγ in the future to catch up with CDF result.

  7. Some thought about Rel 17 analysis • Long term (up to summer next year): • Aim for summer conference . • Differential measurements in photon pT for Wγ/Zγ • Extract ATGC based on Differential measurements • Add Z->υυγ for Zγ ATGC coupling study • Short term: (early next year) • More focus on Wγγ control region for timescale for Winter conference • Hope Wγγ analysis could go for winter conference • Wγ+1jet • Need to study MET / photon isolation performance in rel 17 with 5fb-1

  8. Backup

  9. Anomalous coupling limit in Wγ Use highest pT bin in fiducial measurement for ATGC study • Number of expected events ATGC Vs ATGC parameter can be • Written as Δκ=0.4 (0jet) SM (0jet)

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