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Achim Geiser

Researcher at University of Hamburg

Publications -  1474
Citations -  93498

Achim Geiser is an academic researcher from University of Hamburg. The author has contributed to research in topics: Large Hadron Collider & Lepton. The author has an hindex of 129, co-authored 1331 publications receiving 84136 citations. Previous affiliations of Achim Geiser include RWTH Aachen University & Technical University of Dortmund.

Papers
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Identification and filtering of uncharacteristic noise in the CMS hadron calorimeter

S. Chatrchyan, +2464 more
- 01 Dec 2010 - 
TL;DR: In this paper, noise rejection algorithms are applied to LHC collision data at the trigger level or in the offline analysis to remove 90% of noise events with fake missing transverse energy above 100 GeV, which is sufficient for the physics trigger operation.
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Search for narrow resonances and quantum black holes in inclusive and b-tagged dijet mass spectra from pp collisions at sqrt(s)=7 TeV

S. Chatrchyan, +2239 more
- 02 Jan 2013 - 
TL;DR: In this paper, a search for narrow resonances and quantum black holes is performed in inclusive and b-tagged dijet mass spectra measured with the CMS detector at the LHC.
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Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at √s=13 TeV

Albert M. Sirunyan, +2395 more
- 15 Jan 2019 - 
TL;DR: In this paper, a search is performed for a heavy Majorana neutrino (N), produced in leptonic decay of a W boson propagator and decaying into a W-broson and a lepton, with the CMS detector at the LHC.
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Search for microscopic black holes in pp collisions at $s$ = 8 TeV

S. Chatrchyan, +2256 more
- 12 Apr 2012 - 
TL;DR: In this article, a search for microscopic black holes in pp collisions at a center-of-mass energy of 7 TeV is presented, which corresponds to an integrated luminosity of 4.7 inverse femtobarns recorded by the LHC in 2011.
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Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at √s = 13 TeV

Albert M. Sirunyan, +2318 more
- 03 Aug 2018 - 
TL;DR: In this article, a measurement of the cross section of top quark pair production in association with a W or Z boson using proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC is performed.