Jet-veto Resummation for Gauge boson Pair Yan Wang Mini workshop for CEPC 2015-10-19 Based on Phys. Rev. D 88, 114017 (2013), arXiv:1504.00509 [hep-ph]

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Presentation transcript:

Jet-veto Resummation for Gauge boson Pair Yan Wang Mini workshop for CEPC Based on Phys. Rev. D 88, (2013), arXiv: [hep-ph]

IRREDUCIBLE BACKGROUND Irreducible background for Higgs boson, models such as Supersymmetry and extended Higgs sectors and so on.

TGC ---- fundamental predictions of the non- Abelian SU(2)×U(1) gauge structure of electroweak theory. Testing Standard Model (TGCs) G. J. Gounaris, et. al. Phys. Rev. D 62, (2000). K. Hagiwara, et. Al. NPB (1987).

Testing Standard Model U. Baur et. al. PRD 53, 1098 (1996)

The theoretical predictions Gauge Boson Pair Production BEYOND QCD NLO G. Chachamis, M. Czakon, and D. Eiras, JHEP 12 (2008) 003. F. Campanario and S. Sapeta, Phys. Lett. B 718, 100 (2012). M. Grazzini, JHEP 01, 15 (2006) R. Frederix, M. Grazzini, PLB 662, 353 (2008) S. Dawson, I.M. Lewis, and M. Zeng, Phys. Rev. D 88, (2013). P. Meade, H. Ramani, and M. Zeng, Phys. Rev. D 90, (2014) QCD NNLO WW production: T. Gehrmann, et al., Phys.Rev.Lett. 113, (2014) ZZ production: F. Cascioli, et al., Phys.Lett. B 735, 311 (2014)

Total Cross Section in 2013 NLO NNLL NNLO Exp(CMS) Exp(ATLAS) (MSTW2008 PDF) S. Dawson, et. al, PRD 88, (2013). T. Gehrmann, et al., PRL. 113, (2014) P. Monn, G. Zanderighi

Jet Veto

Transverse Momentum Distribution Veto efficiency: simulated by software, often POWHEG+PYTHIA YW, Chong Sheng Li, Ze Long Liu, Ding Yu Shao and Hai Tao Li, Phys. Rev. D 88, (2013)

Transverse Momentum Distribution YW, Chong Sheng Li, Ze Long Liu, Ding Yu Shao and Hai Tao Li, Phys. Rev. D 88, (2013)

CMS PAS SMP The simulated POWHEG events are reweighted by the NNLL transverse momentum resummation predictions. Total Cross Section in 2015

The Total Cross Section For WZ And ZZ Production CMS PAS SMP CMS PAS SMP F. Cascioli, et al., PLB 735, 311 (2014) lumi. exp. NLO

The comparison of the jet-veto NLO and jet-veto NLO+NNLL resummation The invariant mass distributions Resummed Prediction WY, Chong Sheng Li, Ze Long Liu, arXiv: [hep-ph]

Resummed Prediction

Compare With POWHEG+PYTHIA P. Jaiswal, T. Okui, PRD WY, C-S. Li, Z-L. Liu, arXiv:

Compare With

Compare With Exp.

Tunes in POWHEG+PYTHIA P. Monn, G. Zanderighi

CONCLUSION NLO + NNLL jet-veto resummation for gauge boson pair POWHEG+PYTHIA underestimate NLO cross section Reweight the cross section