-
Stefan Prestel (Fermi National Accelerator Laboratory), Stefan Prestel, Stefan Prestel, Stefan Prestel (Fermi National Accelerator Laboratory), Stefan Prestel25/05/2021, 14:00
-
Dr Andrea Banfi (University of Sussex)25/05/2021, 14:45Talk
-
Andrew Larkoski (Reed Collge)25/05/2021, 15:45Talk
-
Basem El-Menoufi (The university of Manchester)25/05/2021, 16:15Talk
-
Alba Soto Ontoso (IPhT)25/05/2021, 16:30Talk
-
Daniel Reichelt25/05/2021, 17:00
-
Pier Francesco Monni (CERN)25/05/2021, 17:15Talk
-
Chang Wu (Università di Genova & INFN Genova)25/05/2021, 17:30
-
Ryan Wood (University of Sussex)25/05/2021, 17:45
-
Enrico Bothmann (University of Göttingen)26/05/2021, 14:00
-
Pier Francesco Monni (CERN)26/05/2021, 14:20Talk
-
Silvia Ferrario Ravasio (University of Oxford)26/05/2021, 14:40Talk
-
Johannes Scheller (Eberhard Karls Universität Tübingen)26/05/2021, 14:55
-
Rob Verheyen26/05/2021, 15:10
-
Christian Preuss (Monash University)26/05/2021, 15:40
-
Ludovic Scyboz (University of Oxford)26/05/2021, 16:00Talk
It is known that standard dipole showers yield incorrect subleading-colour contributions already at leading-logarithmic level for certain observables. In this talk, I will present two new, simple prescriptions to palliate this issue. I will show how the resulting colour-corrected matrix elements are cured at fixed order in the appropriate limits. I will then demonstrate how the two algorithms...
Go to contribution page -
Simon Platzer (University of Vienna (AT))26/05/2021, 16:15
-
Davison Soper (University of Oregon)26/05/2021, 16:35
-
Matthew Lim (Universita' di Milano-Bicocca)27/05/2021, 14:00Talk
-
Leandro Cieri (INFN)27/05/2021, 14:20Talk
-
Wanli Ju (Durham University)27/05/2021, 14:40Talk
-
Dr Luca Rottoli (Universitaet Zuerich (CH))27/05/2021, 14:55Talk
-
Rudi Rahn (Universiteit van Amsterdam)27/05/2021, 15:10Talk
-
Gregory Soyez (IPhT, CEA Saclay)27/05/2021, 15:25
-
Andreas van Hameren (IFJ PAN)27/05/2021, 15:40
-
Mees van Kampen (University of Antwerp)27/05/2021, 16:00Talk
-
Adam Takacs (University of Bergen)27/05/2021, 16:15Talk
-
Goutam Das (University of Siegen)27/05/2021, 16:30Talk
-
Solange Schrijnder van Velzen27/05/2021, 16:55Talk
-
Mr Sebastian Jaskiewicz (Technical University of Munich)27/05/2021, 17:10Talk
-
Leonardo Vernazza (INFN, Torino)27/05/2021, 17:25Talk
-
Melissa van Beekveld27/05/2021, 17:40Talk
-
Dr Goutam Das (University of Siegen)Talk
We present a novel framework to streamline the calculation of jet and
Go to contribution page
beam functions to next-to-next-to-leading order in perturbation theory.
By exploiting the infrared behavior of the collinear splitting functions,
we factorize the singularities with suitable phase-space parametrizations
and perform the observable-dependent integrations numerically. We have
implemented our approach in... -
Rudi Rahn (Universiteit van Amsterdam)Talk
The azimuthal decorrelation in vector boson+jet production due to soft and collinear QCD effects can be calculated to high precision by using recoil-free jet axes, such as the Winner-Takes-All (WTA) axis, alongside Soft-Collinear Effective Theory (SCET) methods.
Go to contribution page
We present theoretical predictions at next-to-next-to-leading logarithmic accuracy for the azimuthal decorrelation, and demonstrate... -
Dr Alba Soto Ontoso (IPhT)Talk
Dynamically grooming a jet (1) amounts to isolate the hardest splitting in the branching story. The properties of the branching tagged by dynamical grooming can be computed using resummation techniques. In this talk, based on (2), I'll present the resummation structure of dynamically groomed observables, some of them infra-red and collinear safe and others Sudakov safe only, up to next-to...
Go to contribution page -
Solange Schrijnder van VelzenTalk
Using the tracking system at the LHC, one can efficiently suppress pile-up contamination and improve angular resolution. Observables that only depend on charged particles (tracks) are not infrared safe in perturbation theory, so any calculation of track-based observables must account for hadronization effects. This can be done by matching the partonic cross section onto perturbative objects...
Go to contribution page -
Paolo Torrielli (Universita e INFN Torino (IT))Talk
We present state-of-the-art predictions for the transverse momentum of
Go to contribution page
the colour singlet in gluon-fusion Higgs production and in neutral Drell-Yan
lepton-pair production, as well as the phistar observable in Drell Yan.
We resum such observables at N3LL’ accuracy in momentum space with the RadISH formalism, thus consistently including in our prediction all constant terms of relative order... -
Basem El-Menoufi (The university of Manchester)Talk
Jet grooming techniques have proved efficient in mitigating hadronization and pile-up effects in jet observable measurements at the LHC. We study the link between parton dynamics in the collinear limit and the logarithmically enhanced terms of the groomed jet mass distribution, for jets groomed with the modified mass-drop tagger (mMDT). While the leading-logarithmic (LL) result is linked to...
Go to contribution page -
Mr Ryan Wood (University of Sussex)Talk
We present a new method to compute leading hadronisation corrections to two-jet event shapes in $e^+e^-$ annihilation. Interplay between perturbative and non-perturbative effects is accounted for with the ARES method.
Go to contribution page -
Pier Francesco Monni (CERN), Dr Frederic Alexandre Dreyer (University of Oxford), Andrea Banfi (University of Sussex)Talk
We present a new formalism for the resummation of non-global QCD observables beyond leading-logarithmic accuracy. We describe the derivation of a set of integro-differential equations that govern the dynamics of soft radiation in the planar limit, using which we perform a fixed-order calculation of the out-of-jet energy and transverse energy distributions at lepton colliders. We finally...
Go to contribution page -
Mr Sebastian Jaskiewicz (Technical University of Munich)Talk
In this talk, I will discuss the two-loop calculation of the bare next-to-leading power soft functions appearing in the Drell-Yan process in the threshold kinematics. These soft functions are the last missing ingredient needed to verify the next-to-leading power Drell-Yan factorization formula to NNLO. I will briefly review the derivation of the bare factorization theorem and introduce the...
Go to contribution page -
Leonardo Vernazza (INFN, Torino)Talk
The off-diagonal parton-scattering channels $g + \gamma^*$ and $q + \phi^*$ in deep-inelastic scattering are power-suppressed near threshold $x\to 1$. In my talk I will discuss the next- to-leading power (NLP) resummation of large double logarithms of $1-x$ to all orders in the strong coupling, which are present even in the off-diagonal DGLAP splitting kernels. The appearance of divergent...
Go to contribution page -
Chang Wu (University of Göttingen / Technion)Talk
High-precision all-order calculations can only be performed for a narrow class of observables, which are sensitive to radiation over the entire final state phase-space. When phase-space boundaries are introduced, the resummation is affected by so-called non-global logarithms, which have an intricate all-order structure. In this talk, we present a first-principle calculation for the...
Go to contribution page -
Johannes Scheller (Eberhard Karls Universität Tübingen)Talk
We present a systematic investigation of parton-shower and matching uncertainties of perturbative origin for Higgs-boson production via vector-boson fusion. To this end we employ different generators at next-to-leading order QCD accuracy matched with shower Monte Carlo programs, $\texttt{PYTHIA8}$, and $\texttt{HERWIG7}$, and a next-to-next-to-leading order QCD calculation.
Go to contribution page
We thoroughly... -
Adam Takacs (University of Bergen)Talk
The strong suppression of high-pT jets in heavy-ion collisions is a result of elastic and inelastic energy loss, suffered by the jet multi-prong collection of color charges that are resolved by medium interactions. We develop a novel analytic framework to study the quenched jet spectrum in which we include many energy-loss-related effects, such as resummation of soft and hard medium induced...
Go to contribution page -
Christian Preuss (Monash University)Talk
Fixed-order corrections to parton showers often build upon the construction of “shower histories“, accounting for all possible branching sequences to arrive at a given parton configuration. Constructing these histories at high particle multiplicities mandates fairly complex and resource-intensive algorithms.
In this talk, I will introduce the concept of so-called sector showers as...
Go to contribution page -
Dr Rob VerheyenTalk
In this talk, I will describe the adaptation of the well-known Collins-Knowles spin-correlation algorithm to the PanScales dipole and antenna showers. Furthermore, I discuss several spin-sensitive observables, such as a Lund-declustering based azimuthal measure and the 3-point energy correlator that was resummed recently by Chen, Moult and Zhu. The Collins-Knowles algorithm implementation in...
Go to contribution page -
Ludovic Scyboz (University of Oxford)Talk
-
Mees van Kampen (University of Antwerp)Talk
The parton branching (PB) method is recently developed for the evolution of transverse momentum dependent (TMD) parton distributions to be used within Monte Carlo calculations. With PB TMDs, soft-gluon resummation is fulfilled and a mismatch in the treatment of transverse momentum in MC event generators can be avoided. In this talk I show PB TMD results for Drell-Yan transverse momentum...
Go to contribution page -
Melissa van BeekveldTalk
Cross-sections in perturbative QCD are plagued by large corrections from soft and collinear radiation. The most singular terms are known to be universal, which allows their resummation to all orders in the coupling. In this talk, I will discuss the recent progress on understanding the structure of next-to-singular (NLP) contributions, and show the non-negligible phenomenological impact of...
Go to contribution page -
Wanli Ju (Durham University)Talk
To propose an alternative portal to the $W^{\pm}/Z$ correlations, the azimuthal opening angle $\phi_{L}$ between the final leptons is investigated in the DY processes. In the fixed-order context, the calculation on the $\phi_L$ distribution is not straightforward, as the soft and collimated beam radiations in the regime of $\phi_L\to\pi$ or $q_T\to 0$ GeV give rise to large logarithms bringing...
Go to contribution page
Choose timezone
Your profile timezone: