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Ashim Roy

Researcher at National Central University

Publications -  450
Citations -  18660

Ashim Roy is an academic researcher from National Central University. The author has contributed to research in topics: Large Hadron Collider & Standard Model. The author has an hindex of 59, co-authored 446 publications receiving 14586 citations. Previous affiliations of Ashim Roy include Saha Institute of Nuclear Physics & Université libre de Bruxelles.

Papers
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Journal ArticleDOI

Particle-flow reconstruction and global event description with the CMS detector

Albert M. Sirunyan, +2215 more
- 06 Oct 2017 - 
TL;DR: A fully-fledged particle-flow reconstruction algorithm tuned to the CMS detector was developed and has been consistently used in physics analyses for the first time at a hadron collider as mentioned in this paper.
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Event generator tunes obtained from underlying event and multiparton scattering measurements

Vardan Khachatryan, +2286 more
- 17 Mar 2016 - 
TL;DR: Combined fits to CMS UE proton–proton data at 7TeV and to UEProton–antiproton data from the CDF experiment at lower s, are used to study the UE models and constrain their parameters, providing thereby improved predictions for proton-proton collisions at 13.
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Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV

Khachatryan, +2288 more
- 22 Feb 2017 - 
TL;DR: In this paper, an improved jet energy scale corrections, based on a data sample corresponding to an integrated luminosity of 19.7 fb^(-1) collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 8 TeV, are presented.
Journal ArticleDOI

Extraction and validation of a new set of CMS pythia8 tunes from underlying-event measurements

Albert M. Sirunyan, +2251 more
- 03 Jan 2020 - 
TL;DR: For the first time, predictions from pythia8 obtained with tunes based on NLO or NNLO PDFs are shown to reliably describe minimum-bias and underlying-event data with a similar level of agreement to predictions from tunes using LO PDF sets.
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Search for a Higgs boson in the mass range from 145 to 1000 GeV decaying to a pair of W or Z bosons

Vardan Khachatryan, +2356 more
- 22 Oct 2015 - 
TL;DR: In this paper, a search for a heavy Higgs boson in the H to WW and H to ZZ decay channels is reported, based upon proton-proton collision data samples corresponding to an integrated luminosity of up to 5.1 inverse femtobarns at sqrt(s)=7 TeV and up to 19.7 inverse femto-bars at square root of 8 TeV, recorded by the CMS experiment at the CERN LHC.