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With the data collected by LHC at 13 TeV, the CMS collaboration has searched for low mass resonances decaying into two photons. This has resulted in the observation of 3 sd excess around 95 GeV, reminiscent of an indication obtained at LEP2…

High Energy Physics - Experiment · Physics 2017-12-19 Francois Richard

A precise measurement of the top quark mass, a fundamental parameter of the Standard Model, is among the most important goals of top quark studies at the Large Hadron Collider. Apart from the standard methods, numerous new observables and…

High Energy Physics - Phenomenology · Physics 2018-04-04 G. Bevilacqua , H. B. Hartanto , M. Kraus , M. Schulze , M. Worek

Searches for a scalar top quark and a scalar bottom quark have been performed using a data sample of 438 pb-1 at centre-of-mass energies of sqrt(s) = 192 - 209 GeV collected with the OPAL detector at LEP. No evidence for a signal was found.…

High Energy Physics - Experiment · Physics 2008-11-26 The OPAL collaboration , G. Abbiendi

Given a dataset and an existing clustering as input, alternative clustering aims to find an alternative partition. One of the state-of-the-art approaches is Kernel Dimension Alternative Clustering (KDAC). We propose a novel Iterative…

Machine Learning · Statistics 2019-09-10 Chieh Wu , Stratis Ioannidis , Mario Sznaier , Xiangyu Li , David Kaeli , Jennifer G. Dy

The chargino/neutralino pair production is one of the benchmarking processes of ILC. These processes are interesting not only because it allows high precision measurement of chargino and neutralino masses, but also for the reason that the…

Instrumentation and Detectors · Physics 2010-07-06 Yiming Li , Andrei Nomerotski

Sequential Monte Carlo techniques are useful for state estimation in non-linear, non-Gaussian dynamic models. These methods allow us to approximate the joint posterior distribution using sequential importance sampling. In this framework,…

Computation · Statistics 2012-07-09 Mike Klaas , Nando de Freitas , Arnaud Doucet

The aim of this paper is to analyze from a mathematical perspective some existing schemes to partition a molecular density into several atomic contributions, with a specific focus on Iterative Stockholder Atom (ISA) methods. We provide a…

Numerical Analysis · Mathematics 2022-05-11 Robert Benda , Eric Cancès , Virginie Ehrlacher , Benjamin Stamm

We explore the potential for discovery of an exotic color sextet scalar in same-sign top quark pair production in early running at the LHC. We present the first phenomenological analysis at colliders of color sextet scalars with full top…

High Energy Physics - Phenomenology · Physics 2012-01-25 Edmond L. Berger , Qing-Hong Cao , Chuan-Ren Chen , Gabe Shaughnessy , Hao Zhang

If the cold dark matter consists of weakly interacting massive particles (WIMPs), anticipated measurements of the WIMP properties at the Large Hadron Collider (LHC) and the International Linear Collider (ILC) will provide an unprecedented…

High Energy Physics - Phenomenology · Physics 2009-10-09 Daniel J. H. Chung , Lisa L. Everett , Kyoungchul Kong , Konstantin T. Matchev

Variable selection in high-dimensional space characterizes many contemporary problems in scientific discovery and decision making. Many frequently-used techniques are based on independence screening; examples include correlation ranking…

Methodology · Statistics 2008-12-18 Jianqing Fan , Richard Samworth , Yichao Wu

We present an update of the MILC investigation of the properties of light pseudoscalar mesons using three flavors of improved staggered quarks. Results are presented for the $\pi$ and $K$ leptonic decay constants, the CKM matrix element…

Scalar top studies at the ILC are reviewed from initial sensitivity studies to a new precision mass determination method.

High Energy Physics - Phenomenology · Physics 2009-02-16 A. Sopczak , A. Finch , A. Freitas , C. Milstene , H. Nowak , M. Schmitt

We developed a low-mass and high-efficiency charged particle detector for an experimental study of the rare decay $K_L \rightarrow \pi^0 \nu \bar{\nu}$. The detector is important to suppress the background with charged particles to the…

Instrumentation and Detectors · Physics 2016-02-03 D. Naito , Y. Maeda , N. Kawasaki , T. Masuda , H. Nanjo , T. Nomura , M. Sasaki , N. Sasao , S. Seki , K. Shiomi , Y. Tajima

The problem of interpretability of machine learning architecture in particle physics has no agreed-upon definition, much less any proposed solution. We present a first modest step toward these goals by proposing a definition and…

High Energy Physics - Phenomenology · Physics 2025-03-11 Andrew J. Larkoski

We investigate screening masses at both sides of the first order finite temperature transition with 3 quark flavors using the nonperturbatively improved clover fermion action and the Iwasaki gauge action. We have developed the method of…

High Energy Physics - Lattice · Physics 2015-01-27 Xiao-Yong Jin , Yoshinobu Kuramashi , Yoshifumi Nakamura , Shinji Takeda , Akira Ukawa

Current state-of-the-art discrete optimization methods struggle behind when it comes to challenging contrast-enhancing discrete energies (i.e., favoring different labels for neighboring variables). This work suggests a multiscale approach…

Computer Vision and Pattern Recognition · Computer Science 2012-11-05 Shai Bagon , Meirav Galun

The International Large Detector, ILD, is a detector concept which has been developed for the electron-positron collider ILC. The detector has been optimized for precision physics in a range of energies between 90 GeV and 1 TeV. ILD…

Instrumentation and Detectors · Physics 2019-12-11 The ILD Collaboration , contact Ties Behnke

A feasibility study is presented for the search of the lightest top squark in a compressed scenario, where its mass is approximately equal to the sum of the masses of the top quark and the lightest neutralino. The study is performed in the…

High Energy Physics - Phenomenology · Physics 2014-11-26 Bhaskar Dutta , Will Flanagan , Alfredo Gurrola , Will Johns , Teruki Kamon , Paul Sheldon , Kuver Sinha , Kechen Wang , Sean Wu

Future e$^+$e$^-$ colliders, thanks to their clean environment and triggerless operation, offer a unique opportunity to search for long-lived particles (LLPs). Considered in this contribution are promising prospects for LLP searches offered…

High Energy Physics - Experiment · Physics 2023-11-01 Jan Klamka

The Compact Linear Collider (CLIC) is a proposed high-luminosity collider that would collide electrons with their antiparticles, positrons, at energies ranging from a few hundred Giga-electronvolts (GeV) to a few Tera-electronvolts (TeV).…

Accelerator Physics · Physics 2020-04-22 Eva Sicking , Rickard Ström