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B2 – Boosted Topologies and Supersymmetry



Project Leaders

Peter Schleper (e-mail | group homepage)

Frank Tackmann (e-mail | group homepage)


Abstract

The project focuses on the interconnection between models for Supersymmetry breaking and corresponding experimental signatures at the LHC. The key ingredient is the investigation of experimental observables which are inherently sensitive to supersymmetric parameters, but which at the same time have a predictable background from QCD and other Standard Model processes. Likelihood techniques are employed making use of kinematic fits and matrix element methods to identify decay chains and combinatoric hypotheses with the aim to determine masses and decay properties of supersymmetric particles.


Researchers

Samuel Bein

Johannes Haller

Roman Kogler

Simon Kurz

Daniele Marconi

Marek Niedziela

Lorena Rothen

Christian Sander

Peter Schleper

Alexander Schmidt

Dennis Schwarz

Jory Sonneveld

Hartmut Stadie

Georg Steinbrück

Frank Tackmann


Former members

Christian Autermann

Arne-Rasmus Dräger

Markus Ebert

Ulla Gebbert

Kristin Göbel

Malte Hoffmann

Kolja Kaschube

Gordon Kaussen

Teresa Lenz

Isabell Melzer-Pellmann

Benedikt Mura

Friederike Nowak

Piotr Pietrulewicz

Denis Rathjens

Matthias Schröder

Torben Schum

Valentina Sola

Jan Thomsen

Daniel Tröndle

Lukas Vanelderen


Publications


Get these publications as bibtex-file


"Measurement of the jet mass in highly boosted tt events from pp collisions at √s=8 TeV"
Sirunyan, Albert M and others
Eur. Phys. J. C77, 467 (2017)
doi: 10.1140/epjc/s10052-017-5030-3
eprint: 1703.06330 [hep-ex] [ link ]

"A new tagger for hadronically decaying heavy particles at the LHC"
Lapsien, Tobias and Kogler, Roman and Haller, Johannes
Eur. Phys. J. C76, 600 (2016)
doi: 10.1140/epjc/s10052-016-4443-8
eprint: 1606.04961 [hep-ph]

"Factorization for Jet Radius Logarithms in Jet Mass Spectra at the LHC"
Kolodrubetz, Daniel W. and Pietrulewicz, Piotr and Stewart, Iain W. and Tackmann, Frank J. and Waalewijn, Wouter J.
JHEP 12, 054 (2016)
doi: 10.1007/JHEP12(2016)054
eprint: 1605.08038 [hep-ph]

"Impact of Jet Veto Resummation on Slepton Searches"
Tackmann, Frank J. and Waalewijn, Wouter J. and Zeune, Lisa
JHEP 07, 119 (2016)
doi: 10.1007/JHEP07(2016)119
eprint: 1603.03052 [hep-ph]

"Factorization and Resummation for Generic Hierarchies between Jets"
Pietrulewicz, Piotr and Tackmann, Frank J. and Waalewijn, Wouter J.
JHEP 08, 002 (2016)
doi: 10.1007/JHEP08(2016)002
eprint: 1601.05088 [hep-ph]

"Variable Flavor Number Scheme for Final State Jets in DIS"
Hoang, Andre H. and Pietrulewicz, Piotr and Samitz, Daniel
Phys. Rev. D93, 034034 (2016)
doi: 10.1103/PhysRevD.93.034034
eprint: 1508.04323 [hep-ph]

"Search for resonant tt production in proton-proton collisions at √s = 8  TeV"
Khachatryan, Vardan and others
Phys. Rev. D93, 012001 (2016)
doi: 10.1103/PhysRevD.93.012001
eprint: 1506.03062 [hep-ex]

"Measurement of the jet mass distribution in boosted tt production at √s = 8 TeV"
The CMS Collaboration
[ link ]

"Top Tagging with New Approaches"
The CMS Collaboration
[ link ]

"Search for tt resonances in boosted semileptonic final states in pp collisions at √s = 13 TeV"
The CMS Collaboration
[ link ]

"Hard Matching for Boosted Tops at Two Loops"
Hoang, Andre H. and Pathak, Aditya and Pietrulewicz, Piotr and Stewart, Iain W.
JHEP 12, 059 (2015)
doi: 10.1007/JHEP12(2015)059
eprint: 1508.04137 [hep-ph]

"XCone: N-jettiness as an Exclusive Cone Jet Algorithm"
Stewart, Iain W. and Tackmann, Frank J. and Thaler, Jesse and Vermilion, Christopher K. and Wilkason, Thomas F.
JHEP 11, 072 (2015)
doi: 10.1007/JHEP11(2015)072
eprint: 1508.01516 [hep-ph]

"Search for supersymmetry with photons in pp collisions at √s=8  TeV"
Khachatryan, Vardan and others
Phys. Rev. D92, 072006 (2015)
doi: 10.1103/PhysRevD.92.072006
eprint: 1507.02898 [hep-ex]

"Searches for new physics using the tt invariant mass distribution in pp collisions at √s = 8  TeV"
Chatrchyan, Serguei and others
Phys. Rev. Lett. 111, 211804 (2013)
doi: 10.1103/PhysRevLett.111.211804, 10.1103/PhysRevLett.112.119903
eprint: 1309.2030 [hep-ex]

"Search for physics beyond the standard model in events with τ leptons, jets, and large transverse momentum imbalance in pp collisions at √s = 7 TeV"
The CMS Collaboration
Eur.Phys.J. C73, 2493 (2013)
doi: 10.1140/epjc/s10052-013-2493-8
eprint: 1301.3792 [hep-ex]

"Search for new physics in events with photons, jets, and missing transverse energy in pp collisions at √s = 7 TeV"
The CMS Collaboration
JHEP 1303, 111 (2013)
doi: 10.1007/JHEP03(2013)111
eprint: 1211.4784 [hep-ex]

"Search for New Physics in the Multijets and Missing Momentum Final State in Proton-Proton Collisions at 8 TeV"
CMS Collaboration
[ link ]

"Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at √s = 7 TeV"
The CMS Collaboration
Phys.Rev.Lett. 109, 171803 (2012)
doi: 10.1103/PhysRevLett.109.171803
eprint: 1207.1898 [hep-ex]

"Search for supersymmetry in events with photons and missing energy"
CMS Collaboration
[ link ]

"Jet Calibration and Resolution"
The CMS Collaboration
JINST 6, P11002 (2011)
doi: 10.1088/1748-0221/6/11/P11002
eprint: 1107.4277 [physics.ins-det]

"Missing transverse energy performance of the CMS detector"
The CMS Collaboration
JINST 6, P09001 (2011)
doi: 10.1088/1748-0221/6/09/P09001
eprint: 1106.5048 [physics.ins-det]

"Search for New Physics with Jets and Missing Transverse Momentum in pp collisions at √s = 7 TeV"
The CMS Collaboration
JHEP 1108, 155 (2011)
doi: 10.1007/JHEP08(2011)155
eprint: 1106.4503

"Determination of supersymmetric masses using kinematic fits at the LHC"
Christian Autermann, Benedikt Mura, Christian Sander, Hannes Schettler, Peter Schleper
eprint: 0911.2607 [hep-ph]

"SUSY search strategies at ATLAS and CMS"
Autermann, Christian
Proceedings, 16th International Conference on Supersymmetry and the Unification of Fundamental Interactions SUSY08: Seoul, Korea, June 16-21, 2008, AIP Conf. Proc. (2009)
doi: 10.1063/1.3051934


Theses


Diploma thesis: "Development of an Algorithm for identifying hadronically decaying W±, Z0 and Higgs Bosons at CMS"
Eugen Trapp
Universität Hamburg (2016)

Diploma thesis: "Studie zur Suche angeregter Top Quarks mit Hilfe des CMS Experiments bei √s = 13 TeV"
Jens Multhaup
Universität Hamburg (2016)

Diploma thesis: "Search for Z' decaying to a top quark and a vector like quark at CMS"
Anna Benecke
Universität Hamburg (2016)

PhD thesis: "A search for new heavy particles in events with highly ionising, short tracks at the CMS experiment"
Lenz, Teresa
Universität Hamburg (2016)
doi: 10.3204/DESY-THESIS-2016-016
[ link ]

PhD thesis: "Studies of top tagging identification methods and development of a new heavy object tagger"
Lapsien, Tobias
Universität Hamburg (2016)
doi: 10.3204/DESY-THESIS-2016-013
[ link ]

PhD thesis: "Search for the decay of a heavy Higgs boson decaying to two light Higgs bosons using a kinematic fit"
Malte Hoffmann
Universität Hamburg (2016)
[ link ]

PhD thesis: "Prediction of the t t and W + Jets Background in a Search for New Physics with Jets and Missing Transverse Energy at CMS"
Dräger, Arne-Rasmus
Universität Hamburg (2016)
doi: 10.3204/DESY-THESIS-2016-005
[ link ]

Diploma thesis: "Studies for the measurement of the jet mass in fully merged hadronic top quark decays"
Torben Dreyer
Universität Hamburg (2015)

PhD thesis: "Jet energy calibration and a search for supersymmetry with vector boson fusion channel like sign di-τh final states"
Rathjens, Denis
Universität Hamburg (2015)
doi: 10.3204/DESY-THESIS-2015-028
[ link ]

PhD thesis: "Probing supersymmetry based on precise jet measurements at the CMS experiment"
Goebel, Kristin
Universität Hamburg (2015)
doi: 10.3204/DESY-THESIS-2015-003
[ link ]

Diploma thesis: "Messung des tt-Wirkungsquerschnitts bei hohen invarianten Massen am LHC"
Marc Stöver
Universität Hamburg (2014)

Master thesis: "Search for Supersymmetry at the LHC with Multivariate Analysis Techniques"
Annika Vanhoefer
Universität Hamburg (2013)

Diploma thesis: "Messung von lost leptons aus ttbar und W+jets am CMS Detektor"
Arne Dräger
Universität Hamburg (2012)

PhD thesis: "Search for Supersymmetry in the Hadronic Channel with Data from the CMS Experiment"
Thomsen, Jan
Universität Hamburg (2012)
[ link ]

PhD thesis: "QCD processes and search for supersymmetry at the LHC"
Schum, Torben
Universität Hamburg (2012)
[ link ]

PhD thesis: "Quality of Jet Measurements and Impact on a Search for New Physics at CMS"
Schröder, Matthias
Universität Hamburg (2012)
[ link ]

PhD thesis: "Search for Supersymmetry with Jets, Missing Transverse Momentum and a Single Tau at CMS"
Nowak, Friederike
Universität Hamburg (2012)
[ link ]

PhD thesis: "Photons, missing energy and the quest for supersymmetry at the LHC"
Gebbert, Ulla
Universität Hamburg (2012)
[ link ]

PhD thesis: "Kinematic Fits in leptonic SUSY events"
Benedikt Mura
Universität Hamburg (2011)

PhD thesis: "Search for heavy stable charged particles"
Kolja Kaschube
Universität Hamburg (2011)

Diploma thesis: "Search for SUSY in tau final states"
Wolfgang Schmitz
Universität Hamburg (2011)

Diploma thesis: "Search for SUSY in Photon final state"
Nadja Hüdepohl
Universität Hamburg (2011)

Diploma thesis: "Kinematic Fits to Determine Masses of Supersymmetric Particles at LHC"
Hannes Schettler
Universität Hamburg (2009)

Diploma thesis: "Experimental application of QCD antennas"
Bobrovskyi, Sergei
Universität Hamburg (2009)
doi: 10.3204/DESY-THESIS-2010-003
[ link ]

Diploma thesis: "Massive Bosonen aus supersymmetrischen Zerfällen im vollhadronischen Kanal bei CMS"
Friederike Nowak
Universität Hamburg (2008)

Diploma thesis: "Kinematische Analyse von Squark-Zerfällen im vollhadronischen Kanal bei CMS"
Ulla Gebbert
Universität Hamburg (2008)

Diploma thesis: "Search for Supersymmetric Particles based on large Missing Transverse Energy and High Pt Jets at the CMS Experiment"
Jan Thomsen
Universität Hamburg (2007)

Diploma thesis: "Kinematic fitting of Event topologies in the CMS Experiment"
Torben Schum
Universität Hamburg (2007)

Diploma thesis: "Studien zu tau-Leptonen aus supersymmetrischen Ereignissen innerhalb des GMSB-Modells"
Alexander Clahes
Universität Hamburg (2007)

Impressum  | last modified 21 Sep 2017