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Josef Hammer

Researcher at CERN

Publications -  637
Citations -  64338

Josef Hammer is an academic researcher from CERN. The author has contributed to research in topics: Large Hadron Collider & Standard Model. The author has an hindex of 120, co-authored 631 publications receiving 60840 citations. Previous affiliations of Josef Hammer include École Polytechnique & Austrian Academy of Sciences.

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Inclusive Search for Supersymmetry Using Razor Variables in pp Collisions at $√s=7 TeV$

S. Chatrchyan, +2180 more
- 06 Jan 2017 - 
TL;DR: In this paper, an inclusive search is presented for new heavy particle pairs produced in √s=7 TeV proton-proton collisions at the LHC using 4.7±0.1
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Search for a light pseudoscalar Higgs boson in the dimuon decay channel in pp collisions at √s=7TeV

S. Chatrchyan, +2291 more
- 20 Sep 2012 - 
TL;DR: The dimuon invariant mass spectrum is searched in the range between 5.5 and 14 GeV for a light pseudoscalar Higgs boson a, predicted in a number of new physics models, including the next-to-minimal supersymmetric standard model, and results improve on existing bounds on the abb coupling and are the first significant limits for m(a) > m(Υ(3S).
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Measurement of the ZZ production cross section and search for anomalous couplings in 2ℓ2ℓ′ final states in pp collisions at \( \sqrt{s}=7 \) TeV

S. Chatrchyan, +2253 more
- 09 Jan 2013 - 
TL;DR: In this article, a measurement of the ZZ production cross section in the 2l2l′ decay mode with l = e, μ and l′ = e and μ, τ in proton-proton collisions at s√=7 TeV with the CMS experiment at the LHC.
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Pseudorapidity distribution of charged hadrons in proton-proton collisions at s=13 tev

Vardan Khachatryan, +2300 more
- 17 Dec 2015 - 
TL;DR: In this paper, the pseudorapidity distribution of primary charged long-lived hadrons produced in inelastic pp collisions is determined in the central region of the CMS pixel detector (abs(eta)<2) using both hit pairs and reconstructed tracks.
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Measurement of the W+W- cross section in pp collisions at s=8 TeVand limits on anomalous gauge couplings

Vardan Khachatryan, +2295 more
- 15 Jul 2016 - 
TL;DR: In this article, a measurement of the W boson pair production cross section in proton-proton collisions at √s = 8 TeV is presented, consistent with the standard model prediction.