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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 a heavy gauge boson W′ in the final state with an electron and large missing transverse energy in pp collisions at √s = 7 TeV

Vardan Khachatryan, +2155 more
- 28 Mar 2011 - 
TL;DR: A search for a heavy gauge boson W' has been conducted by the CMS experiment at the LHC in the decay channel with an electron and large transverse energy imbalance, using proton-proton collision data corresponding to an integrated luminosity of 36 inverse picobarns.
Journal ArticleDOI

Measurement of the top quark mass using charged particles in pp collisions at s√=8 TeV

Khachatryan, +2265 more
- 18 May 2016 - 
TL;DR: In this paper, a novel technique for measuring the mass of the top quark that uses only the kinematic properties of its charged decay products is presented, where the main theoretical systematic uncertainties concerning the modeling of the fragmentation and hadronization of b quarks and the reconstruction of secondary vertices from the decays of b hadrons are studied.
Journal ArticleDOI

Measurements of the $$\mathrm{Z}$$Z$$\mathrm{Z}$$$$\mathrm{Z}$$$$2\mathrm{l} 2\nu $$l$$\sqrt{s} = 7$$=$$8~\mathrm{TeV} $$

Vardan Khachatryan, +2115 more
- 29 Oct 2015 - 
Journal ArticleDOI

Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at √s =13 TeV

Vardan Khachatryan, +2247 more
- 27 Jan 2017 - 
TL;DR: The authors of as mentioned in this paper acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN;

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.