Search for dark matter and supersymmetry in the vector boson fusion topology in proton-proton collisions at CMS

A Celik,A M C Hernandez,Cms Collaboration

doi:10.1088/1742-6596/869/1/012047

Abstract

A search for pair production of dark matter candidates and supersymmetry (SUSY) production with two jets in vector-boson fusion (VBF) topology is presented using data collected by the Compact Muon Solenoid (CMS) detector in proton-proton collisions at the Large Hadron Collider (LHC). Final states with no leptons are expected in pair production of dark matter particles or scalar quarks in SUSY compressed mass-spectra scenarios. Final states with low-energy leptons are expected in the production of charginos and neutralinos in SUSY compressed mass-spectra scenarios. Results for both zero and two lepton final states at 8 TeV are presented with brief prospects at 13 TeV.

Highlights

Understanding the nature of dark matter (DM) in the Universe would rank among the biggest leaps forward in the progress of fundamental physics
A search for pair production of dark matter candidates and supersymmetry production (SUSY) with two jets in vector-boson fusion (VBF) topology is presented using data collected by the CMS detector in proton-proton collisions at the LHC
Two analyses reported here are the first searches for SUSY and DM with two jets in the VBF topology at the LHC: (i) two leptons with VBF dijet to search for charginos and neutralinos in the Minimal Supersymmetric Standard Model (MSSM) [5]; (ii) large momentum imbalance with VBF dijet to test DM-gauge boson couplings in a framework of an effective field theory (EFT) and test SUSY in compressed mass-spectrum scenario [6]

Summary

Introduction

Understanding the nature of dark matter (DM) in the Universe would rank among the biggest leaps forward in the progress of fundamental physics. Two analyses reported here are the first searches for SUSY and DM with two jets in the VBF topology at the LHC: (i) two leptons with VBF dijet to search for charginos and neutralinos in the Minimal Supersymmetric Standard Model (MSSM) [5]; (ii) large momentum imbalance with VBF dijet to test DM-gauge boson couplings in a framework of an effective field theory (EFT) and test SUSY in compressed mass-spectrum scenario [6]. For a compressed mass-spectrum scenario in which the mass difference between the χ"# and the lightest, mass-degenerate, gaugino particles χ*# and χ"± is 50 GeV, lower mass limit of 170 GeV is set for χ*# and χ"± This scenario was not excluded by the latest CMS analyses in the trilepton channel [8].

DM and Compressed Mass-Spectra SUSY

Findings

Summary