Next-to-leading order calculation of three jet observables in hadron hadron collision

By Zoltán Nagy. 2003

508 citations recorded by the source corpus.

The production of three jets in hadron-hadron collisions is the first complex process which allows us to define a branch of variables in order to make more precise measurements of the strong coupling and the parton distribution function of the proton. This process is also suitable for studying the geometrical properties of the hadronic final state at hadron colliders. This requires a next-to-leading order prediction of the three-jet observables. In this paper we describe the theoretical formalism of such a calculation with sufficient detail. We use the dipole method to construct a Monte Carlo program for calculating three-jet observables at next-to-leading order accuracy. We present a theoretical prediction for inclusive and exclusive cross sections and for some relevant event shape variables such as the transverse thrust, transverse jet broadening, and ${E}_{t3}$ variable.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/39a853984a7319a8e0efdb3d00f785aaee23cf00

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In Nuclear and High Energy Physics

Citations in the corpus

A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector (2012, methodology): “43, where the diffractive DIS dijet cross section is simulated for the LHeC kinematics and acceptance, using NLOJET++ [448], with the H1 2006 Fit B DPDFs [434].”
Jet substructure at the Large Hadron Collider: A review of recent advances in theory and machine learning (2017, background): “A variety of fixed-order programs exist, both for hadron colliders, such as MCFM8 [77, 78, 79, 80], NLOJet++ [81, 82, 83, 84, 85], and NNLOJet [86, 87], as well as for e+e− collisions such as EVENT2 [88, 89], EERAD3 [90], and CoLoRFulNNLO [91, 92, 93, 94].”
A critical appraisal of NLO+PS matching methods (2011, methodology): “the left hand side. They are not uniquely dened, but can be constructed, for example, using the Catani-Seymour method [15] or the FKS approach [16]. Furthermore they can be restricted in phase space [27] or extended with an arbitrary nite function. Similar terms can also be computed in a parton-show”
Looking Inside Jets (2019, methodology): “ that our resummed calculation should not be trusted in the region of large vwhere an exact xed-order calculation would be needed. This could be obtained from NLO Monte Carlo generators like NLOJet++ [183] for dijet hard processes (here one would need a 3-jet NLO calculation for the angularity distr”
Les Houches 2013: Physics at TeV Colliders: Standard Model Working Group Report (2014, methodology): “The largest uncertainties are those from the residual scale dependence at NLO QCD [92, 93], typically of the order 5% at high pT.”
Towards an understanding of jet substructure (2013, methodology): “Mass distributions for mMDT tagged jets, comparing different parton-shower generators, the resummation and the exact leading-order and next-to-leading order results (obtained with NLOJet++ [64] with the MSTW2008 NLO PDF set [69]), with a central scale choice μR = μF = pt and simultaneous scale varia”