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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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Measurement of energy flow at large pseudorapidities in pp collisions at sqrt(s) = 0.9 and 7 TeV

S. Chatrchyan, +2241 more
- 29 Nov 2011 - 
TL;DR: In this article, the energy flow at large pseudorapidities in proton-proton collisions at the LHC was studied at the centre-of-mass energies of 0.9 and 7 TeV.
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Measurements of the ϒ(1S) , ϒ(2S) , and ϒ(3S) differential cross sections in pp collisions at s=7TeV

Vardan Khachatryan, +2138 more
- 07 Oct 2015 - 
TL;DR: Differential cross sections as a function of transverse momentum are presented for the production of Y(nS) (n = 1, 2, 3) states decaying into a pair of muons in this article.
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Search for new physics with the M T2 variable in all-jets final states produced in pp collisions at √ s=13 TeV

Vardan Khachatryan, +2326 more
- 03 Oct 2016 - 
TL;DR: In this article, a search for new physics is performed using events that contain one or more jets, no isolated leptons, and a large transverse momentum imbalance, as measured through the MT2 variable, which is an extension of the transverse mass in events with two invisible particles.
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Search for Z′ resonances decaying to tt in dilepton+jets final states in pp collisions at √s=7 TeV

S. Chatrchyan, +2196 more
- 03 Apr 2013 - 
TL;DR: In this article, a search for resonances decaying to top quark-antiquark pairs is performed using a dilepton+jets data sample recorded by the CMS experiment at the LHC in pp collisions at √s=7 TeV corresponding to an integrated luminosity of 5.0
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Measurement of electroweak production of two jets in association with a Z boson in proton–proton collisions at s=8TeV

Vardan Khachatryan, +2141 more
- 10 Feb 2015 - 
TL;DR: In this article, the electroweak cross section for the production of two jets in association with a Z boson, in proton-proton collisions at sqrt(s) = 8 TeV, is measured using data recorded by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 19.7 inverse femtobarns.