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29–31 Jan 2020
University of Venda
Africa/Johannesburg timezone

Background determination of the control region of the RSH4+ETmiss signal at the ATLAS detector

30 Jan 2020, 16:50
15m
University of Venda

University of Venda

Senate Chamber P/Bag X 5050 Thohoyandou, 0950

Speaker

Mr Abdualazem Fadol Mohammed (Chinese Academy of Sciences (CN))

Description

The 4-lepton final state is a clean and important signal that is being studied at the ATLAS detector. In this study, we focus on four leptons originated from the RSH4+ETmiss signal. R is a scalar boson produced via gluon--gluon fusion and decays to two lighter scalar bosons, S and H. The S decays to a pair of Standard Model of particle physics neutrinos. And thereof considered here as missing transverse energy, ETmiss. The 4-lepton final state comes from the H boson through the decay of the ZZ bosons. The signal region looks at four leptons invariant mass, m4, greater than 200 GeV. This study helps to understand the nature of the considered background for the 4+ETmiss signal on a control region defined by m4(140-200) GeV. A comparison between the state-of-the-art Monte Carlo simulation for the background processes, and the data at an integrated luminosity of 139 fb1 is provided.

Author

Mr Abdualazem Fadol Mohammed (Chinese Academy of Sciences (CN))

Co-authors

Xifeng Ruan (University of the Witwatersrand (ZA)) Yaquan Fang (Chinese Academy of Sciences (CN))

Presentation materials