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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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Measurements of inclusive W and Z cross sections in pp collisions at \sqrt {s} = 7 TeV

Vardan Khachatryan, +2187 more
TL;DR: In this article, the W and Z boson production cross sections in pp collisions at 7 TeV are presented, based on 2.9 inverse picobarns of data recorded by the CMS detector at the LHC.
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Measurement of the differential cross section for top quark pair production in pp collisions at √s=8 TeV

Vardan Khachatryan, +2125 more
TL;DR: In this article, the normalized differential cross section for top quark pair (tt) production is measured in pp collisions at a centre-of-mass energy of 8TeV at the CERN LHC using the CMS detector in data corresponding to an integrated luminosity of 19.7fb^(−1).
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Search for neutral MSSM Higgs bosons decaying to a pair of tau leptons in pp collisions

Vardan Khachatryan, +2189 more
TL;DR: A search for neutral Higgs bosons in the minimal supersymmetric extension of the standard model (MSSM) decaying to tau-lepton pairs in pp collisions is performed, using events recorded by the CMS experiment at the LHC.
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Search for supersymmetry in hadronic final states with missing transverse energy using the variables αT and b-quark multiplicity in pp collisions at √s = 8 TeV

S. Chatrchyan, +3883 more
TL;DR: In this paper, an inclusive search for supersymmetric processes that produce final states with jets and missing transverse energy is performed in pp collisions at a centre-of-mass energy of 8 TeV.
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Search for the associated production of the Higgs boson with a top-quark pair

Vardan Khachatryan, +2197 more
TL;DR: In this article, a search for the standard model Higgs boson produced in association with a top-quark pair (ttH) is presented, using data samples corresponding to integrated luminosities of up to 5.1 fb^(−1) and 19.7 fb+1, collected in pp collisions at center of mass energies of 7 TeV and 8 TeV respectively.