Small-radius jets to all orders in QCD

By M. Dasgupta, Frédéric A. Dreyer, G. Salam, G. Soyez. 2014

176 citations recorded by the source corpus.

A bstractAs hadron collider physics continues to push the boundaries of precision, it becomes increasingly important to have methods for predicting properties of jets across a broad range of jet radius values R, and in particular for small R. In this paper we resum all leading logarithmic terms, αsn lnnR2, in the limit of small R, for a wide variety of observables. These include the inclusive jet spectrum, jet vetoes for Higgs physics and jet substructure tools. Some of the quantities that we consider are relevant also for heavy-ion collisions. Furthermore, we examine and comment on the underlying order-by-order convergence of the perturbative series for different R values. Our results indicate that small-R effects can be substantial. Phenomenological studies will appear in a forthcoming companion paper.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f3191917c8752064b3f5e565e63cb8107dafd6c7

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Citations in the corpus

Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report (2017, methodology): “5, an idealized setup is used to illustrate how an extraction of αs might work at the LHC, using real4Logarithms of the jet radius R may be important when the jet radius is small, and there are techniques to incorporate these corrections into fixed-order calculations [211,212].”
Jet substructure at the Large Hadron Collider: A review of recent advances in theory and machine learning (2017, background): “Other examples of observables relevant for jet substructure which obey non-linear evolution equations are logarithms of the jet radius [390, 392], as well as jet charge, or track based observables [278, 282, 283].”
Analytic boosted boson discrimination (2015, background): “It is expected that for smaller values of R logarithms of R may become numerically important [47, 141, 142], so we do not consider them here.”
The semi-inclusive jet function in SCET and small radius resummation for inclusive jet production (2016, background): “e interpreted as the probability of the parton iwith energy !to transform into a jet with energy !J = z!. In some sense, this is similar to the so-called microjet fragmentation function introduced in [34,35]. They are very similar to the usual quark and gluon fragmentation functions, which are dened”
Systematics of quark/gluon tagging (2017, methodology): “It differs from the initiating parton by a calculable amount in a LL shower [36] and is based on the same (naive) assumption that the parton-shower history is meaningful.”
Les Houches 2015: Physics at TeV Colliders Standard Model Working Group Report (2016, background): “It differs from the initiating parton by a calculable amount in a leading logarithmic shower [130] and is based on the same (naive) assumption that the parton shower history is meaningful.”
The Lund jet plane (2018, background): “ary. This can then alter the density of emissions at smaller angles, i.e. subsequent declusterings. The underlying physics of these two eects is closely connected with small-Rresummations, cf. Refs. [54,55]. Non-global [56] and clustering [57,58] logarithms introduce correlations between regions of ”