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Armen Tumasyan

Researcher at Yerevan Physics Institute

Publications -  1330
Citations -  88558

Armen Tumasyan is an academic researcher from Yerevan Physics Institute. The author has contributed to research in topics: Large Hadron Collider & Lepton. The author has an hindex of 128, co-authored 1189 publications receiving 79408 citations. Previous affiliations of Armen Tumasyan include CERN & Austrian Academy of Sciences.

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Combined search for the quarks of a sequential fourth generation

S. Chatrchyan, +2244 more
- 12 Dec 2012 - 
TL;DR: In this paper, limits on the mass of the fourth generation quarks and the relevant Cabibbo-Kobayashi-Maskawa matrix elements are derived in the context of a simple extension of the standard model with a sequential fourth generation of fermions.
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Measurements of the tt¯ production cross section in lepton+jets final states in pp collisions at 8 TeV and ratio of 8 to 7 TeV cross sections

Vardan Khachatryan, +2290 more
- 07 Jan 2017 - 
TL;DR: In this article, a measurement of the top quark pair production (t-tbar) cross section in proton-proton collisions at the centre-of-mass energy of 8 TeV is presented using data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.6 inverse-femtobarns.
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Measurements of the tt charge asymmetry using the dilepton decay channel in pp collisions at √s = 7 TeV

S. Chatrchyan, +2288 more
- 30 Apr 2014 - 
TL;DR: In this paper, the authors measured the t t-bar charge asymmetry in proton-proton collisions at 7 TeV using the dilepton decay channel (ee, e mu, or mu mu).
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Search for dark matter in proton-proton collisions at 8 TeV with missing transverse momentum and vector boson tagged jets

Vardan Khachatryan, +2345 more
- 16 Dec 2016 - 
TL;DR: In this article, a search for an excess of events with large missing transverse momentum in association with at least one highly energetic jet, in a data sample of proton-proton collisions at a centre-of-mass energy of 8 TeV.
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Measurement of the Zγ production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings

Vardan Khachatryan, +2184 more
- 29 Apr 2015 - 
TL;DR: In this article, the authors measured the cross section for the production of Z gamma in proton-proton collisions at 8 TeV based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 19.5 inverse femtobarns.