Conveners
Plenary: Opening + Session I - CALCULATIONS
- Florencia Canelli (Universitaet Zuerich (CH))
Plenary: Session II - CALCULATION AND MEASUREMENT
- Matthew Schwartz
Plenary: Session III - TOP TAGGING: PERFORMANCE AND APPLICATION
- Lily Asquith (University of Sussex (UK))
Plenary: Session IV - FLAVOR
- Alexander Schmidt (University of Hamburg)
Plenary: Session V - W/Z TAGGERS
- Andreas Hinzmann (Universitaet Zuerich (CH))
Plenary: Session VI - TOP: CALCULATION AND MEASUREMENT
- Thomas Gehrmann
- Thomas Gehrmann (Univ. Zurich)
Plenary: Session VII - FUTURE
- Jesse Thaler (MIT)
Plenary: Session VIII - PILE UP AND CALCULATIONS
- Ariel Gustavo Schwartzman (SLAC National Accelerator Laboratory (US))
Plenary: Session IX - SEARCHES
- Ben Kilminster (Universitaet Zuerich (CH))
Plenary: Mid-Week Session
- Marcel Vos (IFIC Valencia (ES))
Plenary: Session X - SEARCHES
- Andrea Rizzi (Universita di Pisa & INFN (IT))
Plenary: Session XI - SEARCHES AND TAGGING
- Jonathan Butterworth (University College London (UK))
Plenary: Session XII - TAGGING
- Gavin Salam (CERN)
Plenary: Session XIII - PERFORMANCE
- Peter Loch (University of Arizona (US))
Plenary: Session XIV - SEARCHES AND TAGGING
- Salvatore Rappoccio (State University of New York (US))
Plenary: Closing
- Gregor Kasieczka (Eidgenoessische Tech. Hochschule Zuerich (CH))
40' + 10'
Jet shapes are commonly used as discriminative variables to tag boosted objects. In this talk, I will present a method to compute jet shapes for boosted objects which retains the dominant contributions coming either from the large boost or, when appropriate, from the smallness of the shape itself. I will mostly focus on the case of 2-subjettiness but will also show that the method can be...
I will discuss recent advances in precision jet substructure calculations. The soft drop groomed mass has been calculated to next-to-next-to-leading logarithmic accuracy and matched to relative $\alpha_s^2$ fixed-order corrections for jets in $pp\to Z+j$ events. The normalized soft drop mass distribution is insensitive to underlying event and pileup, depends only on collinear physics, and...
-
Top differential cross section and charge asymmetry
New massive resonances with boosted top signatures
-
Identification of b jets in boosted event topologies
Many of the most exciting searches for new physics beyond the Standard Model,
as well as further studies of the Standard Model itself, benefit from being
able to identify high-energy jets containing $b$ quarks (``$b$-jets'').
Examples include Higgs pair production and decay via
$HH\rightarrow b\overline{b}b\overline{b}$, sensitive to Higgs trilinear
couplings~\cite{Behr:2015oqq}; graviton and...
We explore the scale-dependence and correlations of jet substructure observables to improve upon existing techniques in the identification of highly Lorentz-boosted objects. Modified observables are designed to remove correlations from existing theoretically well-understood observables, providing practical advantages for experimental measurements and searches for new phenomena. We study such...
Boosted W/Z-tagging
The top quark mass is one of the most important standard model parameters. The most precise method for top mass extraction comes from kinematic extraction. However, there's an O(1) GeV theory uncertainty associated with the fact these methods rely on Monte Carlo simulations which do not have a fully specified field theoretic mass scheme definition. I will describe our proposal for using a...
Boosted top-tagging
We study the detector performance with an emphasis on jet substructure variables for extremely boosted objects at very high energy proton colliders using Geant4 simulation. We focus on the calorimeter performance and study hadronically-decaying W bosons with transverse momentum in the multi-TeV range (5-20 TeV). The calorimeter segmentation is benchmarked in order to understand the impact of...
Measuring inclusive quantities, both global (missing and sum transverse energy) and local (jet mass and substructure), after the high luminosity LHC upgrade will be extremely challenging, and will require new pile-up mitigation techniques that correct more than local jet energies. To this end, one can use the fact that pile-up has no angular structure while hard processes are characterised by...
-
-
Jet mass response ATLAS
SUSY using boosted techniques
New resonances decaying to boosted Higgs signatures
New resonances decaying to boosted diboson signatures (no abstract received)
Building on the jet-image based representation of high energy jets, we develop computer vision based techniques for jet-tagging through the use of Deep Neural Networks. Jet-images enabled the connection between jet substructure and tagging with the fields of computer vision and image processing. We show how applying such techniques using Deep Neural Networks can improve the performance to...
Deducing whether the substructure of an observed jet is due to a low-mass single particle or due to multiple decay objects of a massive particle is an important problem in the analysis of collider data. Traditional approaches have relied on expert features designed to detect energy deposition patterns in the calorimeter, but the complexity of the data make this task an excellent candidate for...
We present a new approach for efficiently and selectively identifying high-momentum, hadronically decaying top quarks, Higgs bosons, and W and Z bosons, distinguishing them from jets from light quarks and gluons in proton-proton collisions at the LHC or future colliders. This technique yields variables that can be combined with those from current approaches to boosted particle tagging in...
We present a new algorithm developed for the identification of boosted heavy particles at the LHC, the Heavy Object Tagger with Variable R (HOTVR). The algorithm is based on jet clustering with a variable distance parameter $R$ combined with a mass jump condition. The variable $R$ approach adapts the jet size to the transverse momentum $p_T$, resulting in smaller jets for increasing values of...
It has recently been shown that the Y-splitter method with trimming is a very effective method for tagging boosted electroweak bosons, outperforming several standard taggers at high pt. Here we analytically investigate this observation and explain the performance of Y-splitter with a range of grooming techniques from first principles of QCD. We also suggest modifications that considerably...
Massive vector-like quarks using boosted particle reconstructions
We study detector performance of Higgs boson identification variables at very high energy
proton colliders. We study Higgs bosons decaying to bottom quarks with transverse momentum in the multi-TeV range. Detectors are benchmarked in various configurations in order to understand the impact of granularity and resolution on boosted Higgs boson discrimination.
