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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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Diffractive photoproduction of D*±(2010) at HERA

Sergei Chekanov, +328 more
TL;DR: In this article, diffractive photoproduction of D*±(2010) mesons was measured with the ZEUS detector at the ep collider HERA, using an integrated luminosity of 78.6 pb-1.6, using the decay D*+→D0π+s followed by D0→K-π+c.
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Measurement of the t dependence in exclusive photoproduction of gamma(1s) mesons at HERA

Halina Abramowicz, +301 more
- 14 Feb 2012 - 
TL;DR: In this article, the exclusive photoproduction reaction γ p → ϒ ( 1 S ) p has been studied with the ZEUS detector in ep collisions at HERA using an integrated luminosity of 468 pb − 1.
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Measurement of beauty production in deep inelastic scattering at HERA using decays into electrons

Halina Abramowicz, +312 more
TL;DR: In this paper, the production of beauty quarks in ep interactions has been studied with the ZEUS detector at HERA for exchanged four-momentum squared Q^2 > 10 GeV^2, using an integrated luminosity of 363 pb^{-1}.
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Observation of electroweak production of Wγ with two jets in proton-proton collisions at s=13 TeV

Albert M. Sirunyan, +2364 more
- 10 Dec 2020 - 
TL;DR: In this article, a first observation was presented for the electroweak production of a W boson, a photon, and two jets in proton-proton collisions, based on data collected with the CMS detector at a center-of-mass energy of 13 TeV.
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Measurement of jet multiplicity distributions in t(t)over-bar production in pp collisions at root s=7TeV

S. Chatrchyan, +2209 more
TL;DR: The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector.