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ATGC study in 5fb -1

ATGC study in 5fb -1. Liang HAN, Liang HE , Suen Hou , Minghui LIU,Hongye SONG IPAS&USTC. ATGC introduction. By assuming CP conservation, h3 and h4 are chosen as aTGC parameter Form factors are introduced to ensure the unitarity at high energy. is the invariant mass of Z ϒ .

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ATGC study in 5fb -1

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  1. ATGC study in 5fb-1 Liang HAN, Liang HE, SuenHou, MinghuiLIU,Hongye SONG IPAS&USTC

  2. ATGC introduction • By assuming CP conservation, h3 and h4 are chosen as aTGC parameter • Form factors are introduced to ensure the unitarity at high energy. • is the invariant mass of Zϒ. • Λ is the energy scale for new physics.

  3. Cross-section vs. ATGC parameter in different bins ----------- (60,80) -----------(80,100) -----------(100,500) ------ -SM -------H30=0.02 -------H30=0.1 I suggest we discard (60GeV,80GeV) bin for ATGC for 2 reasons 1.No significant difference between SM 2.It is hard to be fit as quadratic curve

  4. Study about bin extended cross-section There is considerable cross-section after 500GeV even 600GeV. So I suggest we extend last pT bin to 1TeV to calculate the ATGC limit

  5. Strategy of ATGC in 5\fb Generate samples using MCFM and fit with function to get the cross section in any ATGC value. 1.For 1D samples 2.For 2D samples

  6. Density distribution function *Add uncertainties as nuisance parameter xk Confidence interval IPAS&USTC

  7. Summary For ATGC study, last pT bin for Zgamma should be extended to 1TeV Only use (80GeV,100GeV) and (100GeV, 1TeV ) two bins If function fitting is good in both 1D and 2D sample, there is no need to generate too many samples with little step Get ATGC limit using Likelihood approaching

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