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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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Search for new physics in the monophoton final state in proton-proton collisions at √s = 13 TeV

Albert M. Sirunyan, +2285 more
- 11 Oct 2017 - 
TL;DR: In this article, a search is conducted for new physics in a final state containing a photon and missing transverse momentum in proton-proton collisions at root s = 13 TeV.
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Study of Jet Quenching with $Z+ext{jet}$ Correlations in Pb-Pb and $pp$ Collisions at ${\sqrt{s}}_{NN}=5.02ext{ }ext{ }\mathrm{TeV}$

Albert M. Sirunyan, +2236 more
- 01 Jan 2017 - 
TL;DR: The R_{jZ} is found to be smaller in Pb-Pb than in pp collisions, which suggests that in P b-Bb collisions a larger fraction of partons associated with the Z bosons fall below the 30 GeV/c p_{T}^{jet} threshold because they lose energy.
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Search for quark contact interactions and extra spatial dimensions using dijet angular distributions in proton-proton collisions at √s = 8 TeV

Vardan Khachatryan, +2128 more
TL;DR: In this paper, an open access article under the CC BY-4.0 license is presented. But the authors do not discuss the role of the CMS Collaboration in their work.
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Measurement of inclusive and differential Higgs boson production cross sections in the diphoton decay channel in proton-proton collisions at √s = 13 TeV

Albert M. Sirunyan, +2357 more
- 24 Jan 2019 - 
TL;DR: In this paper, the authors measured the performance of the Higgs boson in the diphoton decay channel using the data set of proton-proton collisions at 13 TeV collected by the CMS experiment at the LHC in 2016.
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Search for standard model production of four top quarks in the lepton + jets channel in pp collisions at √s=8 TeV

Nathaniel Woods, +2203 more
- 27 Nov 2014 - 
TL;DR: In this paper, a search is presented for standard model (SM) production of four top quarks (tttt) in pp collisions in the lepton + jets channel, where the data correspond to an integrated luminosity of 19.6 fb^(−1) recorded at a centre-of-mass energy of 8 TeV with the CMS detector at the CERN LHC.