In this paper, we review recent theoretical progress and the latest experimental results in jet substructure from the Tevatron and the LHC. We review the status of and outlook for calculation and simulation tools for studying jet substructure. Following up on the report of the Boost 2010 workshop, we present a new set of benchmark comparisons of substructure techniques, focusing on the set of variables and grooming methods that are collectively known as ‘top taggers’. To facilitate further exploration, we have attempted to collect, harmonize and publish software implementations of these techniques.

/pdf/jet-substructure-at-the-tevatron-and-lhc-new-results-new-3nyn3tjusy.pdf

Jet Substructure at the Tevatron and LHC: New results, new tools, new benchmarks

Measurements of jet characteristics from inclusive jet production in proton-proton collisions at a centre-of-mass energy of 7 TeV are presented. The data sample was collected with the CMS detector at the LHC during 2010 and corresponds to an integrated luminosity of 36 inverse picobarns. The mean charged hadron multiplicity, the differential and integral jet shape distributions, and two independent moments of the shape distributions are measured as functions of the jet transverse momentum for jets reconstructed with the anti-kT algorithm. The measured observables are corrected to the particle level and compared with predictions from various QCD Monte Carlo generators.

/pdf/shape-transverse-size-and-charged-hadron-multiplicity-of-1ny22nw1yr.pdf

Shape, transverse size, and charged-hadron multiplicity of jets in pp collisions at √s = 7 TeV

Substructure dependence of jet cross sections at HERA and determination of alpha(S)

Measurement of internal jet structure in dijet production in deep-inelastic scattering at HERA

https://dspace.ewha.ac.kr/bitstream/2015.oak/233726/1/scaling%20violations.pdf

Scaling violations and determination of alpha(s) from jet production in gamma p interactions at HERA

Using emulsion detectors a transverse-momentum analysis of projectile fragments has been performed in Au induced nuclear interactions at 11.6 A GeV/c. Evidence for collective flow of the projectile fragments has been obtained. Angular distributions of the principal vectors of projectile and target fragments have shown strong azimuthal correlation.

I.C. Kim

Papers

Bounce-off in Au-197 induced collisions with Ag(Br) nuclei at 11.6 A GeV/c