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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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Search for direct pair production of scalar top quarks in the single- and dilepton channels in proton-proton collisions at √s= 8 TeV

Vardan Khachatryan, +2365 more
- 09 Feb 2016 - 
TL;DR: In this article, a search for the top squark t_1, the lighter of the two supersymmetric partners of the top quark, is reported from a search of 19.7 fb^(−1) of proton-proton collisions at √s = 8 TeV collected with the CMS detector at the LHC.
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A search for excited leptons in pp collisions at √s = 7 TeV

S. Chatrchyan, +2177 more
TL;DR: In this article, a search for excited leptons was carried out with the CMS detector at the LHC, using 36 inverse picobarns of lepton collision data recorded at 7 TeV.
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Measurement of the inclusive jet cross section in pp collisions at $\sqrt{s} = 2.76\,ext {TeV}

Robin Erbacher, +2266 more
- 01 Jan 2015 - 
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Search for supersymmetry in final states with a single lepton, b-quark jets, and missing transverse energy in proton-proton collisions at √s=7 TeV

S. Chatrchyan, +2181 more
- 05 Mar 2013 - 
TL;DR: In this article, a search motivated by supersymmetric models with light top squarks is presented using proton-proton collision data recorded with the CMS detector at a center-of-mass energy of √s=7 TeV during 2011, corresponding to an integrated luminosity of 4.98
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Pseudorapidity dependence of long-range two-particle correlations in pPb collisions at s NN =5.02 TeV

Vardan Khachatryan, +2260 more
- 31 Jul 2017 - 
TL;DR: In this article, the pseudorapidity separation (Delta eta) of the particle pair at small relative azimuthal angle (abs(Delta phi) < pi/3) is decomposed into a jet component that dominates the short-range correlations and a component that persists at large Delta eta and may originate from collective behavior of the produced system.