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We provide a prescription to train optimal machine-learning-based event selectors and categorizers that maximize the statistical significance of a potential signal excess in high energy physics (HEP) experiments, as quantified by any of six…

Data Analysis, Statistics and Probability · Physics 2019-11-28 Konstantin K. Matchev , Prasanth Shyamsundar

Electron and photon triggers covering transverse energies from 5 GeV to several TeV are essential for signal selection in a wide variety of ATLAS physics analyses to study Standard Model processes and to search for new phenomena. Final…

High Energy Physics - Experiment · Physics 2015-11-16 Gabriella Pásztor

In order to interpret and predict the behavior and properties of fusion plasma, accurate cross sections for electronic processes in collisions between plasma impurities and atomic hydrogen are required. In this work, we investigate the…

Atomic Physics · Physics 2024-12-30 C. C. Jia , Y. Y. Qi , J. J. Niu , Y. Wu J. G. Wang , A. Dubois , N. Sisourat , J. W. Gao

Linear-scaling electronic structure methods based on the calculation of moments of the underlying electronic Hamiltonian offer a computationally efficient and numerically robust scheme to drive large-scale atomistic simulations, in which…

Materials Science · Physics 2017-01-09 Eunan J. McEniry , Ralf Drautz

We introduce and demonstrate a new approach to measuring coherent electron wave packets using high-harmonic spectroscopy. By preparing a molecule in a coherent superposition of electronic states, we show that electronic coherence opens…

Chemical Physics · Physics 2014-07-09 P. M. Kraus , S. B. Zhang , A. Gijsbertsen , R. R. Lucchese , N. Rohringer , H. J. Wörner

This document contains a proposal of the BEPC-II collider beam energy calibration system (IHEP, Beijing). The system is based on Compton backscattering of carbon dioxide laser radiation, producing a beam of high energy photons. Their energy…

Accelerator Physics · Physics 2008-04-02 M. N. Achasov , ChengDong Fu , Xiaohu Mo , N. Yu. Muchnoi , Qing Qin , Huamin Qu , Yifang Wang , Jinqiang Xu

Conditions at which a quasi-one-dimensional (1D) electron system can be considered as a quantum liquid of impenetrable charged particles are theoretically analyzed. In the presence of an inert, neutralizing background, a motion of…

Superconductivity · Physics 2024-06-21 Yu. P. Monarkha

This article presents a method that uses turn-by-turn beam position data and k-modulation data to measure the calibration factors of beam position monitors in high energy accelerators. In this method, new algorithms have been developed to…

Accelerator Physics · Physics 2021-03-09 Javier Fernando Cardona

Emission from high-dipole moment molecules such as HCN allows determination of the density in molecular clouds, and is often considered to trace the "dense" gas available for star formation. We assess the importance of electron excitation…

Astrophysics of Galaxies · Physics 2017-08-28 Paul F. Goldsmith , Jens Kauffmann

A method for the calibration of a Silicon Position Sensitive Detector is described. From the combination of the signals collected at the ends of the resistive electrode, energy and angle of the hitting particle are reconstructed with a…

Nuclear Experiment · Physics 2007-05-23 V. Ostashko , A. Tumino , S. Romano

The dynamic capture of electrons in a semiconductor quantum dot (QD) by raising a potential barrier is a crucial stage in metrological quantized charge pumping. In this work, we use a quantum point contact (QPC) charge sensor to study…

Mesoscale and Nanoscale Physics · Physics 2018-09-27 S. P. Giblin , P. See , A. Petrie , T. J. B. M. Janssen , I. Farrer , J. P. Griffiths , G. A. C. Jones , D. A. Ritchie , M. Kataoka

The particle flow approach to calorimetry can provide unprecedented jet energy resolution at a future high energy collider, such as the International Linear Collider (ILC). However, the use of particle flow calorimetry at the proposed…

Instrumentation and Detectors · Physics 2015-06-11 J. S. Marshall , A. Münnich , M. A. Thomson

A class of two-bit bit flipping algorithms for decoding low-density parity-check codes over the binary symmetric channel was proposed in [1]. Initial results showed that decoders which employ a group of these algorithms operating in…

Information Theory · Computer Science 2012-05-22 Dung Viet Nguyen , Bane Vasic , Michael W. Marcellin

We present a study which shows encouraging stability of the response linearity for a simulated high granularity calorimeter module reconstructed by a CNN model to miscalibration, bias, and noise effects. Our results also show an intuitive,…

Instrumentation and Detectors · Physics 2022-08-10 N. Akchurin , C. Cowden , J. Damgov , A. Hussain , S. Kunori

Electrical double layers play a key role in a variety of electrochemical systems. The mean free path of secondary electrons in aqueous solutions is on the order of a nanometer, making them suitable for probing of ultrathin electrical double…

The electromagnetic ealorimeter (ECAL) of the CMS detector has played an important role in the physics program of the experiment, delivering outstanding performance throughout data taking. The High-Luminosity LHC will pose new challenges.…

Instrumentation and Detectors · Physics 2021-06-10 Stefano Argiro

After 2001 the upgraded ep collider HERA will provide an about five times higher luminosity for the two experiments H1 and ZEUS. In order to cope with the expected higher event rates the H1 collaboration is building a track based trigger…

High Energy Physics - Experiment · Physics 2014-11-17 A. Baird , E. Elsen , Y. H. Fleming , M. Kolander , S. Kolya , D. Meer , D. Mercer , J. Naumann , P. R. Newman , D. Sankey , A. Schoening , H. -C. Schultz-Coulon , Ch. Wissing

In preparation for Higgs factories and energy-frontier facilities, future colliders are moving toward high-granularity calorimeters to improve reconstruction quality. However, the cost and construction complexity of such detectors is…

High Energy Physics - Experiment · Physics 2025-06-04 Nilotpal Kakati , Etienne Dreyer , Eilam Gross

To study the fundamental physics of complex multiphase flow systems using advanced measurement techniques, especially the electrical capacitance tomography (ECT) approach, this article carries out an initial literature review of the ECT…

Computer Vision and Pattern Recognition · Computer Science 2015-10-16 Kezhi Li
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