# Combining states without scale hierarchies with ordered parton showers

@article{Fischer2017CombiningSW, title={Combining states without scale hierarchies with ordered parton showers}, author={Nadine Fischer and Stefan Prestel}, journal={The European Physical Journal C}, year={2017}, volume={77}, pages={1-17} }

We present a parameter-free scheme to combine fixed-order multi-jet results with parton-shower evolution. The scheme produces jet cross sections with leading-order accuracy in the complete phase space of multiple emissions, resumming large logarithms when appropriate, while not arbitrarily enforcing ordering on momentum configurations beyond the reach of the parton-shower evolution equation. This requires the development of a matrix-element correction scheme for complex phase-spaces including…

## 19 Citations

### Efficient multi-jet merging with the Vincia sector shower

- Computer ScienceComput. Phys. Commun.
- 2021

### Efficient Multi-Jet Merging at High Multiplicities

- Computer Science
- 2020

This work presents an extension of the CKKW-L multi-jet merging technique to so-called sector showers as implemented in the Vincia antenna shower, and reduces the factorial scaling of the number of parton shower histories to a constant of a single history per colour-ordered final state.

### Final-state QED multipole radiation in antenna parton showers

- Physics
- 2017

A bstractWe present a formalism for a fully coherent QED parton shower. The complete multipole structure of photonic radiation is incorporated in a single branching kernel. The regular on-shell 2 → 3…

### HYTREES: combining matrix elements and parton shower for hypothesis testing

- PhysicsThe European Physical Journal C
- 2019

We present a new way of performing hypothesis tests on scattering data, by means of a perturbatively calculable classifier. This classifier exploits the “history tree” of how the measured data point…

### Sector showers for hadron collisions

- PhysicsJournal of High Energy Physics
- 2020

In conventional parton showers (including ones based on dipoles/antennae), a given (Born + m )-parton configuration can typically be reached via O ( m !) different “shower histories”. In the context…

### Creating Unique Parton Shower Histories with Sector Showers

- Physics
- 2020

In conventional parton showers (including ones based on dipoles/antennae), a given $(\mathrm{Born}+m)$-parton configuration can typically be reached via ${\mathcal O}(m!)$ different "shower…

### Helicity antenna showers for hadron colliders

- Physics
- 2017

We present a complete set of helicity-dependent $$2\rightarrow 3$$2→3 antenna functions for QCD initial- and final-state radiation. The functions are implemented in the Vincia shower Monte Carlo…

### Leading-color fully differential two-loop soft corrections to QCD dipole showers

- PhysicsPhysical Review D
- 2018

We compute the next-to-leading-order corrections to soft-gluon radiation differentially in the one-emission phase space. We show that their contribution to the evolution of color dipoles can be…

### Scale and scheme variations in unitarized NLO merging

- Physics
- 2020

Precision background predictions with well-defined uncertainty estimates are important for interpreting collider-physics measurements and for planning future high-energy collider experiments. It is…

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