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The ATLAS and CMS experiments at the Large Hadron Collider (LHC) at CERN have searched for signals of new physics, in particular for supersymmetry. The data collected until 2012 at center-of-mass energies of 7 and 8 TeV and integrated…

High Energy Physics - Experiment · Physics 2016-09-07 Christian Autermann

SModelS is an automatised tool for the interpretation of simplified model results from the LHC. It allows to decompose models of new physics obeying a Z2 symmetry into simplified model components, and to compare these against a large…

In this paper we describe a novel, model-independent technique of "rectangular aggregations" for mining the LHC data for hints of new physics. A typical (CMS) search now has hundreds of signal regions, which can obscure potentially…

High Energy Physics - Phenomenology · Physics 2018-01-17 Pouya Asadi , Matthew R. Buckley , Anthony DiFranzo , Angelo Monteux , David Shih

The discovery and exploration of Supersymmetry in a model-independent fashion will be a daunting task due to the large number of soft-breaking parameters in the MSSM. In this paper, we explore the capability of the ATLAS detector at the LHC…

High Energy Physics - Phenomenology · Physics 2011-07-26 John A. Conley , James S. Gainer , JoAnne L. Hewett , My Phuong Le , Thomas G. Rizzo

We argue that combining just a handful of searches for new physics at Run I of the LHC is sufficient to exclude most supersymmetric extensions of the Standard Model in which the gluino is kinematically accessible and the spectrum is…

High Energy Physics - Phenomenology · Physics 2015-06-17 Jared A. Evans , Yevgeny Kats , David Shih , Matthew J. Strassler

Supersymmetry is one of the most popular extensions of the Standard Model of particle physics, as it offers solutions to several shortcomings of the Standard Model. Natural supersymmetric models favor masses for the new particles which are…

High Energy Physics - Experiment · Physics 2019-08-14 Alexander Mann

We point out that the extra neutralinos and charginos generically appearing in a large class of $E_6$ inspired models lead to distinctive signatures from gluino cascade decays in comparison to those from the Minimal Supersymmetric Standard…

High Energy Physics - Phenomenology · Physics 2013-03-14 Alexander Belyaev , Jonathan P. Hall , Stephen F. King , Patrik Svantesson

Domain reweighting can improve sample efficiency and downstream generalization, but data-mixture optimization for multimodal midtraining remains largely unexplored. Current multimodal training recipes tune mixtures along a single dimension,…

Machine Learning · Computer Science 2026-04-17 Bingbing Wen , Sirajul Salekin , Feiyang Kang , Bill Howe , Lucy Lu Wang , Javier Movellan , Manjot Bilkhu

This paper provides guidance to an analyst who wants to extract insight from a spreadsheet model. It discusses the terminology of spreadsheet analytics, how to prepare a spreadsheet model for analysis, and a hierarchy of analytical…

Software Engineering · Computer Science 2008-09-23 Thomas A. Grossman

We present MADLens a python package for producing non-Gaussian lensing convergence maps at arbitrary source redshifts with unprecedented precision. MADLens is designed to achieve high accuracy while keeping computational costs as low as…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-18 Vanessa Böhm , Yu Feng , Max E. Lee , Biwei Dai

In this paper, a search for supersymmetry (SUSY) is presented in events with two opposite-sign isolated leptons in the final state, accompanied by hadronic jets and missing transverse energy. An artificial neural network is employed to…

High Energy Physics - Experiment · Physics 2013-05-01 CMS Collaboration

On the heels of the first analysis of LHC data eclipsing the inverse femtobarn integrated luminosity milestone, we undertake a detailed comparison of the most recent experimental results with Monte Carlo simulation of the full…

High Energy Physics - Phenomenology · Physics 2011-08-26 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

The ATLAS Collaboration announced a 3$\sigma$ excess in the leptonic-$Z+jets+\met$ channel. We show that such an excess can be interpreted in the extension of the Next-to-Minimal Supersymmetric Standard Model (NMSSM) with a heavy Dirac…

High Energy Physics - Phenomenology · Physics 2015-09-01 Ran Ding , Yizhou Fan , Jinmian Li , Tianjun Li , Bin Zhu

Lossy compression is one of the most efficient solutions to reduce storage overhead and improve I/O performance for HPC applications. However, existing parallel I/O libraries cannot fully utilize lossy compression to accelerate parallel…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-06-30 Sian Jin , Dingwen Tao , Houjun Tang , Sheng Di , Suren Byna , Zarija Lukic , Franck Cappello

Searches for beyond-Standard Model physics scenarios, such as supersymmetry (SUSY), at the Large Hadron Collider (LHC) are frequently optimised on simplified models. After assuming particular particle production and decay processes,…

High Energy Physics - Phenomenology · Physics 2023-05-04 Melissa van Beekveld , Philip Grace , Anders Kvellestad , Adam Leinweber , Martin White

We have examined the capability of the LHC, running at both 7 and 8 TeV, to explore the 19(20)-dimensional parameter space of the pMSSM with neutralino(gravitino) LSPs and soft masses up to 4 TeV employing the ATLAS SUSY analysis suite.…

High Energy Physics - Phenomenology · Physics 2012-12-03 M. W. Cahill-Rowley , J. L. Hewett , A. Ismail , T. G. Rizzo

Due to the greater experimental precision expected from the currently ongoing LHC Run 3, equally accurate theoretical predictions are essential. We update the documentation of the Resummino package, a program dedicated to precision cross…

High Energy Physics - Phenomenology · Physics 2023-08-09 J. Fiaschi , B. Fuks , M. Klasen , A. Neuwirth

A search for supersymmetry through the pair production of electroweakinos with mass splittings near the electroweak scale and decaying via on-shell $W$ and $Z$ bosons is presented for a three-lepton final state. The analyzed proton-proton…

High Energy Physics - Experiment · Physics 2020-04-17 Atlas Collaboration

The ATLAS experiment has performed extensive searches for the electroweak production of charginos, neutralinos and staus. This article summarizes and extends the search for electroweak supersymmetry with new analyses targeting scenarios not…

High Energy Physics - Experiment · Physics 2016-03-17 ATLAS Collaboration

The performance of large language model (LLM) systems depends not only on model weights, but also on their harness: the code that determines what information to store, retrieve, and present to the model. Yet harnesses are still designed…

Artificial Intelligence · Computer Science 2026-03-31 Yoonho Lee , Roshen Nair , Qizheng Zhang , Kangwook Lee , Omar Khattab , Chelsea Finn