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Current Research

At the moment I'm working in the CMS collaboration, focusing on electroweak bosons. In particular I'm working on the following subjects
Higgs Physics with:
I'm involved in finding/measuring the Higgs boson (public CMS material) when it decays to two Z bosons.
The angular correlations of the particles in the Z-decays are especially interesting and I'm working on these in the decays with four leptons and two leptons and two quarks.
public 4l results, latest 2l2q results, details on angular correlations.
Exotic searches with dibosons:
In parallel I've been searching for other new exotic particles which may decay into W or Z bosons, such as a graviton. If the exotic particle is very heavy, the two decay particles of the W/Z can be very close and I've worked on methods to still properly reconstruct these final states
latest search results, details on jet substructure.
Electroweak boson scattering
With the upgrade of the LHC to even higher center-of-mass energies it will become feasible to measure Electroweak boson scattering. This process is regularized by the Higgs mechanism, so that a measurement of its cross section promises to be a stringent test of the standard model. The techniques used in my previors work (i.e. jet subtructure, angular correlations) will be applicable here as well.
projections for LHC Run II.

Past Research

Electroweak Physics and QCD
The LHC at CERN is a factory of eletroweak bosons, which can serve as a useful probe into QCD. Here I was involved in a measurement of cross sections for the production of W and Z bosons in associtation with jets at the CMS experiment.
cross section paper
Exotic Searches:
Looking for additional Z-boson look-alike at high invariant mass with the CMS experiment. The large center-of-mass energy of the LHC at CERN promised a great discovery reach, which was unfortunately diminished by the "incident".
paper that I worked on, most current resuts
Diffraction in Deep Inelastic Scattering
Research at the boundary between hard and soft QCD. This work was performed with the H1 experiment at DESY.
PhD. Thesis, papers on diffractive parton densities
Hyperon Polarization
Work concerning the structure of hadrons with the CLAS experiment at, Jefferson Lab.
Master Thesis, paper on Λ polarization


Journal Publications

CMS Experiment:
  • Search for a Higgs boson in the mass range from 145 to 1000 GeV decaying to a pair of W or Z bosons.
    JHEP 1510 (2015) 144 (paper/arXiv/inspire)
  • Search for massive resonances decaying into pairs of boosted bosons in semi-leptonic final states at sqrt(s)= 8 TeV.
    JHEP 1408 (2014) 174 (paper/arXiv/inspire)
  • Search for a narrow spin-2 resonance decaying to a pair of Z vector bosons in the semileptonic final state.
    Phys. Lett. B 718 (2013) 1208 (paper/arXiv/inspire)
  • Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs.
    Phys. Rev. Lett. 110 (2013) 081803 (paper+erratum/arXiv/inspire)
  • A new boson with a mass of 125-GeV observed with the CMS experiment at the Large Hadron Collider.
    Science 338 (2012) 1569-1575 (paper)
  • Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC.
    Phys. Lett. B 716 (2012) 30 (paper/arXiv/inspire)
  • Combined results of searches for the standard model Higgs boson in pp collisions at sqrt(s) =7 TeV.
    Phys. Lett. B 710 (2012) 26 (paper/arXiv/inspire)
  • Search for the standard model Higgs Boson in the decay channel H->ZZ(*)->qqll at CMS.
    JHEP 1204 (2012) 036 (paper/arXiv/inspire)
  • Jet Production Rates in Association with W and Z Bosons in pp Collisions at sqrt(s) = 7 TeV.
    JHEP 1201 (2012) 010 (paper/arXiv/inspire)
  • Search for Resonances in the Dilepton Mass Distribution in pp Collisions at sqrt(s) = 7 TeV.
    JHEP 1105 (2011) 093 (paper/arXiv/inspire)
H1 Experiment:
  • Dijet Cross Sections and Parton Densities in Diffractive DIS at HERA.
    JHEP 0710:042,2007 (paper/arXiv/inspire)
  • Measurement and QCD analysis of the diffractive deep-inelastic scattering cross-section at HERA.
    Eur.Phys.J. C48:715-748,2006 (arXiv/inspire)
CLAS Experiment:
  • First measurement of transferred polarization in the exclusive polarized-e p ---> e-prime K+ polarized-Lambda reaction
    Phys.Rev.Lett. 90:131804,2003 (arXiv/inspire)


CMS Experiment:
  • BSM searches in resolved di-boson topologies
    Multi-Boson Interactions (MBI) 2017, 28-30 Aug 2017, Karlsruhe (Germany), (talk)
  • Searches for Non-SUSY BSM Physics in CMS
    625. WE-Heraeus-Seminar: The High-Energy LHC – Interplay between Precision Measurements and Searches for New Physics, 17-20 Oct 2016, Bad Honnef (Germany), (talk)
  • Jet reconstruction and substructure measurements in ATLAS and CMS with first Run-2 data
    Fourth Annual Large Hadron Collider Physics Conference 2016 (LHCP 2016), 12-18 Jun 2016, Lund (Sweden), (talk, proceedings)
  • Standardmodellphysik am LHC: Präzisionsmessungen bei höchsten Energien
    DPG Spring Meeting of the Matter and Cosmos Section (DPG2016), 29 Feb-4 Mar 2016, Hamburg (Germany), (talk)
  • Hot topics in Multi-boson interactions from CMS
    MBI 2015: Multi-Boson Interactions Workshop 2015, 2-4 Sep 2015, DESY, Hamburg (Germany), (talk)
  • Search for additional higgs-like resonances with heavy masses at the LHC (run1 measurements and run2 prospective)
    WIN2015: 25th International Workshop on Weak Interactions and Neutrinos, 8-13 Jun 2015, Heidelberg (Germany), (talk)
  • Future perspectives for jet substructure techniques in LHC Run2 (ATLAS+CMS)
    ISMD2014: XLIV International Symposium on Multiparticle Dynamics, 8-12 Sep 2014, Bologna (Italy), (talk, proceedings)
  • Search for resonant diboson production with ATLAS and CMS
    DIS 2014: XXII International Workshop on Deep-Inelastic Scattering and Related Subjects, 28 Apr-2 May 2014, Warsaw (Poland), (talk, proceedings)
  • EW Bosons at Colliders ( covering both LHC & Tevatron)
    Lepton Photon 2011: XXV International Symposium on Lepton Photon Interactions at High Energies, 22-27 Aug 2011, Mumbai, Maharashtra (India), (talk, proceedings)
  • Early new physics searches with jets at LHC
    EPSHEP09: The 2009 Europhysics Conference on High Energy Physics , 16-22 Jul 2009, Cracow (Poland), (talk, proceedings)
  • Triggers for New Physics at the LHC
    DISCRETE'08: Symposium on Prospects in the Physics of Discrete Symmetries, 11-16 Dec 2008, Valencia (Spain), (talk, proceedings)
  • Search for high-mass resonances decaying to leptons or photons
    DIS 2008: XVI International Workshop on Deep-Inelastic Scattering and Related Subjects, 7-11 Apr 2008, University College, London (United Kingdom), (talk,proceedings)
H1 Experiment:

Thesis Works

Electroweak Physics at the LHC
PhD. Thesis:
Measurement and QCD Analysis of Diffractive Jet Cross Sections in Deep-Inelastic Scattering at HERA
also: Dijet Cross Sections and Parton Densities in Diffractive DIS at HERA.
JHEP 0710:042,2007 (paper/arXiv/inspire)
Master Thesis:
Transferred Polarization in Σ° Electroproduction


WS2013/14: Übungen zu Klassische Experimentalphysik I
SS2014: Teilchenphysik II - W, Z, Top am Collider
WS2014/15: Übungen zur Teilchenphysik I
SS2015: Teilchenphysik II - W, Z, Top am Collider
WS2015/16: Teilchenphysik I
SS2016: Teilchenphysik II - W, Z, Top am Collider
WS2016/17: KSETA Course: Collider based particle physics
SS2017: Teilchenphysik II - W, Z, Top am Collider
WS2017/18: Physik für Informatiker II
WS2017/18: KSETA Course: Collider based particle physics
SS2018: Teilchenphysik II - W, Z, H am Collider


office hours:
Wednesday 15:30-17:00 or by appointment
Institut für Experimentelle Kernphysik
Karlsruher Institut für Technologie (KIT)
Wolfgang-Gaede-Str. 1
Building 30.23
Room: 9-8
76131 Karlsruhe
Phone: +49 (0)721 608 43576
mail address:
Institut für Experimentelle Kernphysik
Karlsruher Institut für Technologie (KIT)
Postfach 6980
76128 Karlsruhe

© 2012 Matthias Mozer
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