Study of hadronic event-shape variables in multijet final states in pp collisions at s = 7 $$ \sqrt{s} = 7 $$ TeV

Abstract

Event-shape variables, which are sensitive to perturbative and nonperturbative aspects of quantum chromodynamic (QCD) interactions, are studied in multijet events recorded in proton-proton collisions at √ s = 7 TeV. Events are selected with at least one jet with transverse momentum p T > 110 GeV and pseudorapidity |η| < 2.4, in a data sample corresponding to integrated luminosities of up to 5 fb −1 . The distributions of five event-shape variables in various leading jet p T ranges are compared to predictions from different QCD Monte Carlo event generators.

Measurement of hadronic event shapes in high-pT multijet final states at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

“…Event-shape observables have been measured in e + e − collisions at LEP [4][5][6][7], ep collisions at HERA [8], and pp collisions at the Tevatron [9]. More recently, they have been measured in pp collisions at √ s = 7 TeV by the ALICE, CMS and ATLAS Collaborations [10][11][12][13]. ALICE also published measurements at √ s = 0.9 and 2.76 TeV [10], and the CMS Collaboration published a measurement at √ s = 13 TeV [14].…”

The complete NLO corrections to dijet hadroproduction

“…refs. [34][35][36][37][38][39][40][41][42][43][44][45][46] for a list of recent ATLAS and CMS papers approved as publications in the context of jet physics). Having said that, fixed-order perturbation theory is somehow pathological, precisely because a jet can coincide with a photon.…”

Optimizing the parton shower model in PYTHIA with pp collision data at √s = 13 TeV

“…The ESVs may also be used to look for signature of physics beyond the Standard Model [11], [12]. LHC experiments ATLAS, CMS, and ALICE have studied various ESVs, evaluating them with jets and charged particles in proton-protons (pp) collision [13][14][15][16][17][18][19][20].…”