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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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Constraints on parton distribution functions and extraction of the strong coupling constant from the inclusive jet cross section in pp collisions at √s = 7 TeV

Vardan Khachatryan, +2125 more
TL;DR: In this article, the authors used perturbative quantum chromodynamics at next-to-leading order, complemented with electroweak corrections, to determine the strong coupling constant at the Z boson mass MZ is determined to be αS(MZ) = 0.1185 ± 0.0019 (exp)+0.0037 (theo), which is in agreement with the world average.
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Measurement of electroweak production of a W boson in association with two jets in proton–proton collisions at √s=13Te

Albert M. Sirunyan, +2252 more
- 18 Jan 2020 - 
TL;DR: Results are presented of electroweak production of a W boson in association with two jets in proton-proton collisions at s = 13 Te, and limits on anomalous trilinear gauge couplings associated with dimension-six operators are given in the framework of an effective field theory.
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Multifractal analysis of minimum bias events in $$\sqrt s $$ = 630 GeV $$\bar p$$ p collisions

Carmen Albajar, +88 more
- 01 Jun 1992 - 
TL;DR: In this paper, a downward concave multifractal spectral function, f(α), is used to measure the bin-to-bin fluctuations of any observable, and it is shown that the most sensitive comparison between data and the Monte Carlo models, GENCL and PYTHIA 4.8, can be made using fα.
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Search for third-generation scalar leptoquarks in the tτ channel in proton-proton collisions at √s = 8 TeV

Khachatryan, +2325 more
- 09 Jul 2015 - 
TL;DR: In this paper, a search for pair production of third-generation scalar leptoquarks decaying to top quark and τ lepton pairs is presented using proton-proton collision data at a center-of-mass energy of s√=8 TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 19.7 fb^(−1).
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Angular analysis of the decay B+ →k+μ+μ- in proton-proton collisions at s =8 TeV

Albert M. Sirunyan, +2296 more
- 01 Dec 2018 - 
TL;DR: In this paper, the angular distribution of the flavor-changing neutral current decay in proton-proton collisions at a center-of-mass energy of 8 TeV was studied.