Poster

The cross sections of deep inelastic scattering processes at the electron-proton collider HERA are a well established tool to test perturbative QCD predictions. Additionally, they can be used to determine the non-perturbative parton distribution functions of the proton. [...]

In high energy physics, detailed and time-consuming simulations are used for particle interactions with detectors. For the upcoming High-Luminosity phase of the Large Hadron Collider (HL-LHC), the computational costs of conventional simulation tools exceeds the projected computational resources. [...]

A measurement of the inclusive jet production in proton-proton collisions at the LHC at s√=13 TeV is presented. The double-differential cross sections are measured as a function of the jet transverse momentum pT and the absolute jet rapidity ∥y|. [...]

Differential cross sections for top quark pair (tt¯) production are measured in proton-proton collisions at a centre-of-mass energy of 13 TeV using a sample of events containing two oppositely charged leptons. The data were recorded with the CMS detector at the LHC and correspond to an integrated luminosity of 138 fb^{−1}. [...]

A measurement of the top quark pole mass in events where the top quark-antiquark pair is produced in association with one additional jet is presented. This analysis is performed using proton-proton collision data at 13 TeV collected by the CMS experiment at the CERN LHC in 2016, corresponding to a total integrated luminosity of 36.3 fb-1. [...]

For the high-luminosity LHC (HL-LHC), CMS will install a completely new silicon tracker. The future outer tracker will consist of two barrel parts and two endcaps (TEDD), one on each side. [...]

A measurement of the top quark pole mass in events where a top quark-antiquark pair ($t\bar{t}$) is produced in association with one additional jet is presented. This analysis is performed using proton-proton collision data at 13 TeV collected by the CMS experiment at the CERN LHC, corresponding to a total integrated luminosity of 36.3 fb$^{−1}$ [...]

A search for Dark Matter (DM) produced in association with top quarks, with a focus on the dileptonic channel, is presented. This kind of search provides sensitivity to models where the DM couples to the Standard Model (SM) via a spin-0 mediator with a yukawa coupling, which can arise in a number of BSM physics scenarios, for example the 2HDM+a model. [...]

Single-differential cross section predictions for top quark pair production are presented at NLO, using running top quark mass renormalization schemes. The evolution of the mass of the top quark is performed in the MSR scheme as mMSRt(μ) at renormalization scales μ below the MS¯¯¯¯¯¯¯ top quark mass m¯¯¯¯¯t(m¯¯¯¯¯t), and in the MS¯¯¯¯¯¯¯ scheme as m¯¯¯¯¯t(μ) at scales above. [...]

A search for central exclusive production (CEP) of top quark pairs is presented using collision data collected by CMS and CT-PPS in 2017. A data-driven method to estimate the background from pileup protons is described, as well as the development of a BDT classifier to separate the exclusive top signal from the inclusive ttbar background. [...]