Vector Boson Scattering and Quartic Gauge Coupling Studies in WZ Production


Link to the CMS PAS FTR-13-006 on the CERN document server.

Abstract

Studies of the pp to WZ jj vector boson scattering process in 14 TeV pp collisions using upgraded CMS detector configurations are presented. These studies include assessments of the discovery potential for observing standard model quartic coupling and longitudinal vector boson scattering for luminosities up to $300~\mathrm{fb}^{-1}$ and for observing anomalous quartic gauge coupling with luminosities of $300~\mathrm{fb}^{-1}$ and $3000~\mathrm{fb}^{-1}$.

Results

Sensitivities for SM EWK scattering discovery and aQGC. The integrated luminosities for SM EWK discovery at $3\sigma$ and $5\sigma$ are reported while aQGC prospects for discovery are given in terms of the $L_{T1}$ operator coupling constant $f_{T1}/\Lambda^4$.

Significance $3\sigma$ $5\sigma$
SM EWK Scattering Discovery 75 $fb^{-1}$ 185 $fb^{-1}$
$f_{T1}/\Lambda^4$ at 300 $fb^{-1}$ $0.8~\mathrm{TeV}^{-4}$ $1.0~\mathrm{TeV}^{-4}$
$f_{T1}/\Lambda^4$ at 3000 $fb^{-1}$ $0.45~\mathrm{TeV}^{-4}$ $0.55~\mathrm{TeV}^{-4}$

Plots

Dijet $m_{jj}$ mass after full selection.

stack_mjj_rebin.png

WZ transverse mass with $300~\mathrm{fb}^{-1}$. The additional contribution of an aQGC signal for the $L_{T1}$ operator (LT1) with $f_{T1}/\Lambda^4=1.0~\mathrm{TeV}^{-4}$ is illustrated by the red hatched histogram

stack_wztmass_rebin.png

WZ transverse mass with $3000~\mathrm{fb}^{-1}$. The additional contribution of an aQGC signal for the $L_{T1}$ operator (LT1) with $f_{T1}/\Lambda^4=1.0~\mathrm{TeV}^{-4}$ is illustrated by the red hatched histogram.

stack_wztmass_rebin2.png

Dijet $m_{jj}$ and $\Delta\eta(jj)$ before scattering selection on jet kinematics is applied

stack_all_mjj.png

stack_all_deltaetajj.png

Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf stack_all_deltaetajj.pdf r1 manage 14.6 K 2013-09-30 - 17:11 MattHerndon delta eta jj before VBF selection
PNGpng stack_all_deltaetajj.png r1 manage 13.8 K 2013-09-30 - 17:07 MattHerndon delta eta jj before VBF selection
PDFpdf stack_all_mjj.pdf r1 manage 14.6 K 2013-09-30 - 17:11 MattHerndon mjj before VBF selection
PNGpng stack_all_mjj.png r1 manage 13.6 K 2013-09-30 - 17:07 MattHerndon mjj before VBF selection
PDFpdf stack_mjj_rebin.pdf r1 manage 14.1 K 2013-09-30 - 17:12 MattHerndon mjj 300fb-1
PNGpng stack_mjj_rebin.png r1 manage 13.5 K 2013-09-30 - 17:09 MattHerndon mjj 300fb-1
PDFpdf stack_wztmass_rebin.pdf r1 manage 16.6 K 2013-09-30 - 17:12 MattHerndon WZ transverse mass 300fb-1
PNGpng stack_wztmass_rebin.png r2 r1 manage 14.9 K 2013-09-30 - 17:09 MattHerndon WZ transverse mass 300fb-1
PDFpdf stack_wztmass_rebin2.pdf r1 manage 16.7 K 2013-09-30 - 17:13 MattHerndon WZ transverse mass 3000fb-1
PNGpng stack_wztmass_rebin2.png r2 r1 manage 15.2 K 2013-09-30 - 17:10 MattHerndon WZ transverse mass 3000fb-1
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Topic revision: r6 - 2013-11-08 - MattHerndon
 
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