REVIEW 8 cited by
Jet Shapes with the Broadening Axis
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
read the original abstract
Broadening is a classic jet observable that probes the transverse momentum structure of jets. Traditionally, broadening has been measured with respect to the thrust axis, which is aligned along the (hemisphere) jet momentum to minimize the vector sum of transverse momentum within a jet. In this paper, we advocate measuring broadening with respect to the "broadening axis", which is the direction that minimizes the scalar sum of transverse momentum within a jet. This approach eliminates many of the calculational complexities arising from recoil of the leading parton, and observables like the jet angularities become recoil-free when measured using the broadening axis. We derive a simple factorization theorem for broadening-axis observables which smoothly interpolates between the thrust-like and broadening-like regimes. We argue that the same factorization theorem holds for two-point energy correlation functions as well as for jet shapes based on a "winner-take-all axis". Using kinked broadening axes, we calculate event-wide angularities in e+e- collisions with next-to-leading logarithmic resummation. Defining jet regions using the broadening axis, we also calculate the global logarithms for angularities within a single jet. We find good agreement comparing our calculations both to showering Monte Carlo programs and to automated resummation tools. We give a brief historical perspective on the broadening axis and suggest ways that broadening-axis observables could be used in future jet substructure studies at the Large Hadron Collider.
Forward citations
Cited by 8 Pith papers
-
Photon-Tagged Energy Flow in Inclusive Endpoint $B$ Decays
A new photon-tagged angular energy correlator in inclusive B→X_sγ factorizes at leading power into the standard shape function and a newly computed measured jet function, enabling angular tests of endpoint factorization.
-
Logarithmically-accurate showers with massive quarks
PanScales final-state showers now include quark masses at NLL accuracy while keeping original accuracy for massless observables.
-
Resumming transverse observables for NNLO+PS matching in GENEVA
A GENEVA NNLO+PS generator for b bbar H and c cbar H is built with qT resummation at N3LL and the first NLL' resummation of a transverse-measure one-jettiness.
-
Anisotropic jet broadening and jet shape
The paper introduces azimuthal-dependent jet broadening and jet shape observables, calculates their jet functions in SCET for standard and Winner-Take-All axes, and shows the broadening can directly probe the collinea...
-
Systematically Constructing the Likelihood for Boosted $H\to gg$ Decays
Working order-by-order in the strong coupling, the paper constructs the likelihood ratio for boosted H->gg jets versus QCD jets and validates a new color-flow observable, d2/z^2, that improves signal over background b...
-
How much joint resummation do we need?
Joint resummation of two angularities, rather than one or many, yields the largest gain in predicting other angularities in e+ e- dijet events.
-
Phenomenology of heavy-flavour jet angularities at hadron colliders
Resummed predictions for b-jet angularities including finite-mass effects and non-perturbative corrections are computed and compared to light-flavour jets.
-
Heavy Flavor Jet Substructure at Lepton Colliders
NLL-accurate predictions for heavy-flavor energy correlation functions and jet angularities in e+e- collisions show all tested Monte Carlo generators overestimate the dead-cone suppression.
Discussion (0). Continue with ORCID to comment.