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))
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Florencia Canelli (Universitaet Zuerich (CH))18/07/2016, 09:45
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Prof. Frank Petriello (Northwestern University and Argonne National Lab), Frank Petriello Petriello (University of Wisconsin-Madison)18/07/2016, 10:00
40' + 10'
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Robin Erbacher (University of California Davis (US))18/07/2016, 10:50
40' + 10'
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Ian Moult18/07/2016, 11:40
In experimental studies which use boosted taggers, groomers are typically used to reduce sensitivity to wide angle soft radiation. It is therefore important to understand the behavior of these groomers to all orders in QCD. In this talk, I will discuss the factorization of groomed two prong substructure observables, focusing in particular on the $D_2$ observable. I will show that for a...
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Gregory Soyez (IPhT, CEA Saclay)18/07/2016, 14:00
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...
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Andrew Larkoski (Harvard University)18/07/2016, 14:25
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...
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Debarati Roy (University of the Witwatersrand (ZA)), Debarati Roy (Saha Institute of Nuclear Physics (IN))18/07/2016, 14:50
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Ben Nachman (SLAC National Accelerator Laboratory (US))18/07/2016, 15:15
Jet properties
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Matteo Negrini (Universita e INFN, Bologna (IT))18/07/2016, 16:15
Top differential cross section and charge asymmetry
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Louise Skinnari (Cornell University (US))18/07/2016, 16:40
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Aine Kobayashi (University of Tokyo (JP))18/07/2016, 17:05
New massive resonances with boosted top signatures
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Kevin Connor Nash (Rutgers, State Univ. of New Jersey (US))18/07/2016, 17:30
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Gregor Kasieczka (Eidgenoessische Tech. Hochschule Zuerich (CH))18/07/2016, 17:50
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Dinko Ferencek (Institute Rudjer Boskovic (HR))19/07/2016, 09:00
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Nikola Lazar Whallon (University of Washington (US))19/07/2016, 09:25
Identification of b jets in boosted event topologies
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Qi Zeng (SLAC National Accelerator Laboratory (US))19/07/2016, 09:50
X-> bbbar tagging ATLAS
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Todd Brian Huffman (University of Oxford (GB))19/07/2016, 10:15
Many of the most exciting searches for new physics beyond the Standard Model,
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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... -
Ben Kilminster (Universitaet Zuerich (CH))19/07/2016, 10:35
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Salvatore Rappoccio (State University of New York (US))19/07/2016, 11:15
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...
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Aparajita Dattagupta (University of Oregon (US)), Aparajita Dattagupta (Indiana University (US))19/07/2016, 11:40
Boosted W/Z-tagging
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Luca Brianza (Universita & INFN, Milano-Bicocca (IT))19/07/2016, 12:05
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Ben Pecjak19/07/2016, 14:00
The LHC is starting to study the regime where top-quark pairs are produced with energies much larger than the top mass. In this "boosted regime", large QCD corrections can arise both from soft-gluon emissions and from emissions collinear to the energetic top quarks, which become singular in the boosted limit. In this talk I discuss a theoretical framework which can be used to resum both...
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Aditya Pathak (Massachusetts Institute of Technology)19/07/2016, 14:25
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...
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Roman Kogler (Hamburg University (DE))19/07/2016, 14:50
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Christoph Falk Anders (Ruprecht-Karls-Universitaet Heidelberg)19/07/2016, 15:15
Boosted top-tagging
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Nhan Viet Tran (Fermi National Accelerator Lab. (US))19/07/2016, 16:15
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...
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Rosa Simoniello (CERN)19/07/2016, 16:40
Abstract: The linear collider experiments require excellent performance of jet clustering algorithms in high-energy electron-positron with non-negligible gamma gamma -> hadrons background. The ILC and CLIC detector concepts have studied the performance of several algorithms under realistic conditions and with a detailed model of the detector response. Results on jet energy and substructure...
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Gavin Salam (CERN)19/07/2016, 17:05
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Dr dingyu shao20/07/2016, 09:00
In this talk I will introduce our recent work about factorization and resummation for jet processes. From a detailed analysis of Sterman-Weinberg cone-jet cross sections in effective field theory, we obtain novel factorization theorems which separate the physics associated with different energy scales present in such processes. The relevant low-energy physics is encoded in Wilson lines along...
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Matthew Henry Klein (Columbia University (US))20/07/2016, 09:25
Pile-up mitigation techniques
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Andreas Sogaard (University of Edinburgh (GB))20/07/2016, 09:50
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...
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Shawn Darrell Williamson (KIT - Karlsruhe Institute of Technology (DE)), Shawn Darrell Williamson (KIT - Karlsruhe Institute of Technology (DE))20/07/2016, 10:50
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Nhan Viet Tran (Fermi National Accelerator Lab. (US))20/07/2016, 11:05
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Jamal Rorie (University of Hawaii at Manoa), Jamal Tildon Rorie (Rice University (US)), Jamal Tildon Rorie (Rice University (US))20/07/2016, 11:20
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Roland Jansky (University of Innsbruck (AT)), Roland Wolfgang Jansky (University of Innsbruck (AT))20/07/2016, 11:35
Jet mass response ATLAS
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Jesse Thaler (MIT)20/07/2016, 13:00
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20/07/2016, 13:45
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Giordon Holtsberg Stark (University of Chicago (US))21/07/2016, 09:00
SUSY using boosted techniques
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Miaoyuan Liu (Fermi National Accelerator Lab. (US))21/07/2016, 09:25
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Vieri Candelise (National Central University (TW)), Vieri Candelise (National Central University (TW)), Vieri Candelise (Universita di Roma I "La Sapienza"-Universita & INFN, Roma I)21/07/2016, 09:50
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Chris Pollard (University of Glasgow (GB))21/07/2016, 10:15
New resonances decaying to boosted Higgs signatures
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Petar Maksimovic (Johns Hopkins University (US))21/07/2016, 11:15
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Francesco De Lorenzi (Iowa State University (US))21/07/2016, 11:40
New resonances decaying to boosted diboson signatures (no abstract received)
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Stanislava Sevova (Northwestern University (US))21/07/2016, 12:05
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Ben Nachman (SLAC National Accelerator Laboratory (US)), Michael Aaron Kagan (SLAC National Accelerator Laboratory (US))21/07/2016, 14:00
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...
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Daniel Hay Guest (University of California Irvine (US))21/07/2016, 14:25
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...
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12. New Multivariate Approach to Tagging Highly Boosted Top Quarks, Higgs Bosons, and W and Z BosonsJohn Conway (University of California, Davis)21/07/2016, 14:50
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...
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Tobias Lapsien (Hamburg University (DE))21/07/2016, 15:15
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...
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Giorgia Rauco (Universitaet Zuerich (CH))21/07/2016, 16:15
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Takuto Kunigo (Kyoto University (JP))21/07/2016, 16:40
Jet performance in Run 2
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Camilla Galloni (Universitaet Zuerich (CH))21/07/2016, 17:05
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Laís Sarem Schunk (IPhT, CEA - Saclay)21/07/2016, 17:30
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...
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Gregor Kasieczka (Eidgenoessische Tech. Hochschule Zuerich (CH))21/07/2016, 17:55
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Marta Verweij (CERN)22/07/2016, 09:15
Heavy Ion z-fragmentation measurement in pp and PbPb
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Trisha Farooque (Universitat Autònoma de Barcelona (ES))22/07/2016, 09:40
Massive vector-like quarks using boosted particle reconstructions
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Julie Hogan (Brown University (US))22/07/2016, 10:05
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Philip Coleman Harris (CERN)22/07/2016, 11:00
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Simone Marzani (SUNY Buffalo)22/07/2016, 11:50
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22/07/2016, 12:40
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Salvatore Rappoccio (State University of New York (US))22/07/2016, 13:00
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Gregor Kasieczka (Eidgenoessische Tech. Hochschule Zuerich (CH))22/07/2016, 13:15
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Vieri Candelise (National Central University (TW))
We study detector performance of Higgs boson identification variables at very high energy
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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. -
Aashish Tripathee
In this talk, I present the first analysis of the substructure of jets using the 2010 CMS Open Data. Our analysis is based on 36/pb of 7 TeV proton-proton collisions, where in each event the leading jet has a transverse momentum larger than 150 GeV. We measure classic jet substructure observables like jet mass and multiplicity and compare the results to parton shower generators. We find...
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speaker CMS (CMS)