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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.

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Journal ArticleDOI

Search for heavy Majorana neutrinos in e±e±+ jets and e±µ±+ jets events in proton-proton collisions at √s = 8 TeV

Vardan Khachatryan, +2355 more
- 27 Apr 2016 - 
TL;DR: In this paper, a search for heavy Majorana neutrinos (N) decaying into a W boson and a lepton using the CMS detector at the Large Hadron Collider is performed.
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Production of Lambda(+)(c) baryons in proton-proton and lead-lead collisions at root S-NN=5.02 TeV

Albert M. Sirunyan, +2324 more
- 10 Apr 2020 - 
TL;DR: In this paper, the transverse momentum spectra of inclusively produced Λc+ baryons are measured via the exclusive decay channel using the CMS detector at the LHC.
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Measurements of the pp WZ inclusive and differential production cross sections and constraints on charged anomalous triple gauge couplings at s=13 TeV

Albert M. Sirunyan, +2374 more
- 18 Apr 2019 - 
TL;DR: The WZ production cross section is measured in proton-proton collisions at a center-of-mass energy = 13 TeV using data collected with the CMS detector, corresponding to an integrated luminosity of 35.9 fb(-1).
Journal ArticleDOI

Measurement of the Top Quark Pair Production Cross Section in Proton-Proton Collisions at s√=13 TeV

Vardan Khachatryan, +2300 more
- 05 Feb 2016 - 
TL;DR: In this article, the top quark pair production cross section is measured for the first time in proton-proton collisions at square root(s) = 13 TeV by the CMS experiment at the CERN LHC, using data corresponding to an integrated luminosity of 42 inverse picobarns.
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Measurement of Double-Differential Cross Sections for Top Quark Pair Production in Pp Collisions at √s = 8 TeV and Impact on Parton Distribution Functions

Albert M. Sirunyan, +2210 more
- 11 Jul 2017 - 
TL;DR: Normalized double-differential cross sections for top quark pair production are measured in pp collisions at a centre-of-mass energy of 8 with the CMS experiment at the LHC as mentioned in this paper.