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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 new phenomena with the $M_{\mathrm {T2}}$ variable in the all-hadronic final state produced in proton-proton collisions at $\sqrt{s} = 13$ $\,\text {TeV}

Albert M. Sirunyan, +2208 more
- 12 May 2017 - 
TL;DR: In this article, a search for new phenomena is performed using events with jets and significant transverse momentum imbalance, as inferred through the $M_{\mathrm {T2}}$ variable.
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Search for heavy long-lived charged particles in pp collisions at √s=7 TeV

S. Chatrchyan, +2190 more
- 18 Jul 2012 - 
TL;DR: In this article, the results of a search for heavy long-lived charged particles produced in pp collisions at the LHC were described and the results were used to establish cross section limits as a function of mass within the context of models with longlived gluinos, scalar top quarks and scalar taus.
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Measurement of the Υ(1S), Υ(2S), and Υ(3S) Polarizations in pp Collisions at s√=7 TeV

S. Chatrchyan, +2165 more
- 20 Feb 2013 - 
TL;DR: In this paper, the polarizations of the mesons were measured in proton-proton collisions at √s=7 TeV, using a data sample of Υ(nS)→μ^+μ^- decays collected by the CMS experiment, corresponding to an integrated luminosity of 4.9
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Search for Narrow Resonances in Dijet Final States at sqrt[s]=8 TeV with the Novel CMS Technique of Data Scouting.

Vardan Khachatryan, +2245 more
- 14 Jul 2016 - 
TL;DR: A search for narrow resonances decaying into dijet final states is performed on data from proton-proton collisions at a center-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 18.8 fb^{-1}.
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Search for a standard model-like Higgs boson in the $μ^+μ^−$ and $e^+e^−$ decay channels at the LHC

Vardan Khachatryan, +2141 more
- 11 May 2015 - 
TL;DR: Open Access funded by SCOAP³ - Sponsoring Consortium for Open Access Publishing in Particle Physics Under a Creative Commons license as discussed by the authors, is used for particle physics publications.