150 citations · 970 across the 31 of their papers we have counts for
24 papers · 1 filter
Neural Embedding: Learning the Embedding of the Manifold of Physics Data
Sang Eon Park, Philip Harris, Bryan Ostdiek
In this paper, we present a method of embedding physics data manifolds with metric structure into lower dimensional spaces with simpler metrics, such as Euclidean and Hyperbolic sp…
Creating Simple, Interpretable Anomaly Detectors for New Physics in Jet Substructure
Layne Bradshaw, Spencer Chang, Bryan Ostdiek
Anomaly detection with convolutional autoencoders is a popular method to search for new physics in a model-agnostic manner. These techniques are powerful, but they are still a "bla…
Challenges for Unsupervised Anomaly Detection in Particle Physics
Katherine Fraser, Samuel Homiller, Rashmish K. Mishra +2
Anomaly detection relies on designing a score to determine whether a particular event is uncharacteristic of a given background distribution. One way to define a score is to use au…
Deep Set Auto Encoders for Anomaly Detection in Particle Physics
Bryan Ostdiek
There is an increased interest in model agnostic search strategies for physics beyond the standard model at the Large Hadron Collider. We introduce a Deep Set Variational Autoencod…
Parameter Inference from Event Ensembles and the Top-Quark Mass
Forrest Flesher, Katherine Fraser, Charles Hutchison +2
One of the key tasks of any particle collider is measurement. In practice, this is often done by fitting data to a simulation, which depends on many parameters. Sometimes, when the…
On the ATLAS Top Mass Measurements and the Potential for Stealth Stop Contamination
Timothy Cohen, Stephanie Majewski, Bryan Ostdiek +1
The discovery of the stop - the Supersymmetric partner of the top quark - is a key goal of the physics program enabled by the Large Hadron Collider. Although much of the accessible…
Mass Agnostic Jet Taggers
Layne Bradshaw, Rashmish K. Mishra, Andrea Mitridate +1
Searching for new physics in large data sets needs a balance between two competing effects---signal identification vs background distortion. In this work, we perform a systematic s…
Dark Mesons at the LHC
Graham D. Kribs, Adam Martin, Bryan Ostdiek +1
A new, strongly-coupled dark sector could be accessible to LHC searches now. These dark sectors consist of composites formed from constituents that are charged under the electrowea…
Magnifying the ATLAS Stealth Stop Splinter: Impact of Spin Correlations and Finite Widths
Timothy Cohen, Walter Hopkins, Stephanie Majewski +1
In this paper, we recast a "stealth stop" search in the notoriously difficult region of the stop-neutralino Simplified Model parameter space for which $m(\tilde{t}) - m(\tildeχ) \s…
What is the Machine Learning?
Spencer Chang, Timothy Cohen, Bryan Ostdiek
Applications of machine learning tools to problems of physical interest are often criticized for producing sensitivity at the expense of transparency. To address this concern, we e…
(Machine) Learning to Do More with Less
Timothy Cohen, Marat Freytsis, Bryan Ostdiek
Determining the best method for training a machine learning algorithm is critical to maximizing its ability to classify data. In this paper, we compare the standard "fully supervis…
Don't be left in the dark: Improving LHC searches for dark photons using lepton-jet substructure
G. Barello, Spencer Chang, Christopher A. Newby +1
Collider signals of dark photons are an exciting probe for new gauge forces and are characterized by events with boosted lepton jets. Existing techniques are efficient in searching…
Physics at a 100 TeV pp collider: beyond the Standard Model phenomena
T. Golling, M. Hance, P. Harris +111
This report summarises the physics opportunities in the search and study of physics beyond the Standard Model at a 100 TeV pp collider.
750 GeV Diphotons from Supersymmetry with Dirac Gauginos
Timothy Cohen, Graham D. Kribs, Ann E. Nelson +1
Motivated by the recent excess in the diphoton invariant mass near 750 GeV, we explore a supersymmetric extension of the Standard Model that includes the minimal set of superpartne…
Towards the Final Word on Neutralino Dark Matter
Joseph Bramante, Nishita Desai, Patrick Fox +3
We present a complete phenomenological prospectus for thermal relic neutralinos. Including Sommerfeld enhancements to relic abundance and halo annihilation calculations, we obtain…
Constraining the minimal dark matter fiveplet with LHC searches
Bryan Ostdiek
Adding a fermion to the standard model particle content which is a fiveplet under gives a dark matter candidate. The lightest state in the multiplet is neutral and automa…
Dirac Triplet Extension of the MSSM
C. Alvarado, A. Delgado, A. Martin +1
In this paper we explore extensions of the Minimal Supersymmetric Standard Model involving two triplet chiral superfields that share a superpotential Dirac mass yet only…
Dark Matter from the Supersymmetric Custodial Triplet Model
Antonio Delgado, Mateo Garcia-Pepin, Bryan Ostdiek +1
The Supersymmetric Custodial Triplet Model (SCTM) adds to the particle content of the MSSM three triplet chiral superfields with hypercharge . At the superpot…
The Relic Neutralino Surface at a 100 TeV collider
Joseph Bramante, Patrick J. Fox, Adam Martin +4
We map the parameter space for MSSM neutralino dark matter which freezes out to the observed relic abundance, in the limit that all superpartners except the neutralinos and chargin…
Catching sparks from well-forged neutralinos
Joseph Bramante, Antonio Delgado, Fatemeh Elahi +2
In this paper we present a new search technique for electroweakinos, the superpartners of electroweak gauge and Higgs bosons, based on final states with missing transverse energy,…
Surveying the Scope of the SU(2)_L Scalar Septet Sector
C. Alvarado, L. Lehman, B. Ostdiek
Extending the Standard Model by adding a scalar field transforming as a septet under preserves the parameter at tree level and can satisfy experimental constraints on…
Indirect Effect of Supersymmetric Triplets in Stop Decays
J. de Blas, A. Delgado, B. Ostdiek +1
We study an extension of the minimal supersymmetric standard model with a zero hypercharge triplet, and the effect that such a particle has on stop decays. This model has the capab…
The Least Supersymmetric Signals at the LHC
J. de Blas, A. Delgado, B. Ostdiek
We study the implications at the LHC for the minimal (least) version of the supersymmetric standard model. In this model supersymmetry is broken by gravity and extra gauge interact…
LHC Signals of Non-Custodial Warped 5D Models
Jorge de Blas, Antonio Delgado, Bryan Ostdiek +1
We study the implications at the LHC for a recent class of non-custodial warped extra-dimensional models where the AdS_5 metric is modified near the infrared brane. Such models all…