检索结果-内蒙古大学图书馆

Calibration of the light-flavour jet mistagging efficiency of the b-tagging algorithms with Z+jets events using 139 fb-1 of ATLAS proton-proton collision data at √s = 13 TeV

arXiv

引用

arXiv 2023年

作者： Aad, G. Abbott, B. Abbott, D.C. Abeling, K. Abidi, S.H. Aboulhorma, A. Abramowicz, H. Abreu, H. Abulaiti, Y. Hoffman, A.C. Abusleme Acharya, B.S. Bourdarios, C. Adam Adamczyk, L. Adamek, L. Cppm Aix-Marseille Université CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma NormanOK United States Department of Physics University of Massachusetts AmherstMA United States II. Physikalisches Institut Georg-August-Universität Göttingen Göttingen Germany Physics Department Brookhaven National Laboratory UptonNY United States Faculté des Sciences Université Mohammed v Rabat Morocco Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion Israel Institute of Technology Haifa Israel Department of Physics New York University New YorkNY United States Departamento de Física Pontificia Universidad Católica de Chile Santiago Chile Infn Gruppo Collegato di Udine Sezione di Trieste Udine Italy Ictp Trieste Italy Lapp Université Savoie Mont Blanc CNRS/IN2P3 Annecy France Agh University of Krakow Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics University of Toronto TorontoON Canada

The identification of b-jets, referred to as b-tagging, is an important part of many physics analyses in the ATLAS experiment at the Large Hadron Collider and an accurate calibration of its performance is essential for high-quality physics results. This publication describes the calibration of the light-flavour jet mistagging efficiency in a data sample of proton-proton collision events at √s = 13 TeV corresponding to an integrated luminosity of 139 fb-1. The calibration is performed in a sample of Z bosons produced in association with jets. Due to the low mistagging efficiency for light-flavour jets, a method which uses modified versions of the b-tagging algorithms referred to as flip taggers is used in this work. A fit to the jet-flavour-sensitive secondary-vertex mass is performed to extract a scale factor from data, to correct the light-flavour jet mistagging efficiency in Monte Carlo simulations, while simultaneously correcting the b-jet efficiency. With this procedure, uncertainties coming from the modeling of jets from heavy-flavour hadrons are considerably lower than in previous calibrations of the mistagging scale factors, where they were dominant. The scale factors obtained in this calibration are consistent with unity within uncertainties. © 2023, CC BY.

关键词： Calibration

来源：评论

学校读者我要写书评

暂无评论

Hopping-Transport Mechanism for Reconfigurable Logic in Disordered Dopant Networks

引用

Physical Review applied 2022年第6期17卷 064025-064025页

作者： Henri Tertilt Jesse Bakker Marlon Becker Bram de Wilde Indrek Klanberg Bernard J. Geurts Wilfred G. van der Wiel Andreas Heuer Peter A. Bobbert Institut für physikalische Chemie Westfälische Wilhelms-Universität Münster Münster Germany NanoElectronics Group University of Twente Enschede Netherlands Multiscale Modeling and Simulation Group Faculty of Electrical Engineering Mathematics and Computer Science MESA+ Institute for Nanotechnology and Center for Brain-Inspired Nano Systems (BRAINS) University of Twente Enschede Netherlands Center for Computational Energy Research (CCER) Eindhoven University of Technology Netherlands Fachbereich Physik Westfälische Wilhelms-Universität Münster Münster Germany Department of Applied Physics Eindhoven University of Technology Netherlands

We present an atomic-scale mechanism based on variable-range hopping of interacting charges enabling reconfigurable logic in dopant network processing units. Kinetic Monte Carlo simulations of the hopping process show temperature-dependent current-voltage characteristics and artificially evolved basic Boolean logic gates in very good agreement with experiment. The simulations provide unique insights into the local electrostatic potential and current flow in the dopant network, showing subtle changes induced by control voltages that set the conditions for the logic operation. These insights will be crucial in the systematic further development of this burgeoning technology for unconventional computing. The establishment of the principles underlying the logic functionality of these devices encourages the exploration and utilization of the same principles in other materials and device geometries.

关键词： Doping effects Hopping transport Neuromorphic computing Devices for digital logic, storage & processing Disordered systems Doped semiconductors Genetic algorithm Monte Carlo methods

来源：评论

学校读者我要写书评

暂无评论

Optical Solitons with Cubic–Quartic Complex Ginzburg–Landau Equation Using a Novel Approach

SSRN

引用

SSRN 2022年

作者： Arnous, Ahmed H. Nofal, Taher A. Biswas, Anjan González-Gaxiola, O. Moraru, Luminita Moldovanu, Simona Department of Mathematics and Physics Grambling State University GramblingLA71245 United States Research Group Department of Mathematics King Abdulaziz University Jeddah21589 Saudi Arabia Department of Mathematics and Applied Mathematics Sefako Makgatho Health Sciences University Medunsa Pretoria 0204 South Africa Department of Applied Sciences Cross–Border Faculty of Humanities Economics and Engineering Dunarea de Jos University of Galati 111 Domneasca Street Galati800201 Romania Department of Applied Mathematics National Research Nuclear University 31 Kashirskoe Hwy Moscow115409 Russia Applied Mathematics and Systems Department Universidad Autonoma Metropolitana–Cuajimalpa Vasco de Quiroga 4871 Mexico City05348 Mexico Faculty of Sciences and Environment Department of Chemistry Physics and Environment Dunarea de Jos University of Galati 47 Domneasca Street 800008 Romania Department of Computer Science and Information Technology Faculty of Automation Computers Electrical Engineering and Electronics Dunarea de Jos University of Galati 47 Domneasca Street Galati800008 Romania Taif University Saudi Arabia

The present work retrieves cubic–quartic optical soliton solutions to the complex Ginzburg–Landau equation that is considered with five forms of nonlinear refractive index. The proposed algorithm reveals a full spectrum of optical solitons as well as hybrid type solitons whose existence are guaranteed with the listed parameter constraints. © 2022, The Authors. All rights reserved.

关键词： Solitons

来源：评论

学校读者我要写书评

暂无评论

Search for leptoquark pair production decaying into or in multi-lepton final states in pp collisions at with the ATLAS detector

引用

The European Physical Journal C 2024年第8期84卷 1-40页

作者： Aad, G. Abbott, B. Abbott, D. C. Abeling, K. Abidi, S. H. Aboulhorma, A. Abramowicz, H. Abreu, H. Abulaiti, Y. Hoffman, A. C. Abusleme Acharya, B. S. Achkar, B. Bourdarios, C. Adam Adamczyk, L. Adamek, L. Addepalli, S. V. Adelman, J. Adiguzel, A. Adorni, S. Adye, T. Affolder, A. A. Afik, Y. Agaras, M. N. Agarwala, J. Aggarwal, A. Agheorghiesei, C. Aguilar-Saavedra, J. A. Ahmad, A. Ahmadov, F. Ahmed, W. S. Ahuja, S. Ai, X. Aielli, G. Aizenberg, I. Akbiyik, M. Åkesson, T. P. A. Akimov, A. V. Khoury, K. Al Alberghi, G. L. Albert, J. Albicocco, P. Alderweireldt, S. Aleksa, M. Aleksandrov, I. N. Alexa, C. Alexopoulos, T. Alfonsi, A. Alfonsi, F. Alhroob, M. Ali, B. Ali, S. Aliev, M. Alimonti, G. Alkakhi, W. Allaire, C. Allbrooke, B. M. M. Allport, P. P. Aloisio, A. Alonso, F. Alpigiani, C. Camelia, E. Alunno Estevez, M. Alvarez Alviggi, M. G. Aly, M. Coutinho, Y. Amaral Ambler, A. Amelung, C. Amerl, M. Ames, C. G. Amidei, D. Santos, S. P. Amor Dos Amoroso, S. Amos, K. R. Ananiev, V. Anastopoulos, C. Andeen, T. Anders, J. K. Andrean, S. Y. Andreazza, A. Angelidakis, S. Angerami, A. Anisenkov, A. V. Annovi, A. Antel, C. Anthony, M. T. Antipov, E. Antonelli, M. Antrim, D. J. A. Anulli, F. Aoki, M. Aoki, T. Pozo, J. A. Aparisi Aparo, M. A. Bella, L. Aperio Appelt, C. Aranzabal, N. Ferraz, V. Araujo Arcangeletti, C. Arce, A. T. H. Arena, E. Arguin, J-F. Argyropoulos, S. Arling, J.-H. Armbruster, A. J. Arnaez, O. Arnold, H. Tame, Z. P. Arrubarrena Artoni, G. Asada, H. Asai, K. Asai, S. Asbah, N. A. Assamagan, K. Astalos, R. Atkin, R. J. Atkinson, M. Atlay, N. B. Atmani, H. Atmasiddha, P. A. Augsten, K. Auricchio, S. Auriol, A. D. Austrup, V. A. Avner, G. Avolio, G. Axiotis, K. Ayoub, M. K. Azuelos, G. Babal, D. Bachacou, H. Bachas, K. Bachiu, A. Backman, F. Badea, A. Bagnaia, P. Bahmani, M. Bailey, A. J. Bailey, V. R. Baines, J. T. Bakalis, C. Baker, O. K. Bakker, P. J. Bakos, E. Gupta, D. Bakshi Balaji, S. Balasubramanian, R. Baldin, E. M. Balek, P. Ballabene, E. Balli, F. Baltes, L. M. Balunas, W. K. Balz, J. Banas, E. Ban CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman USA Department of Physics University of Massachusetts Amherst USA II. Physikalisches Institut Georg-August-Universität Göttingen Göttingen Germany Physics Department Brookhaven National Laboratory Upton USA Faculté des sciences Université Mohammed V Rabat Morocco Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion Israel Institute of Technology Haifa Israel Department of Physics New York University New York USA Departamento de Física Pontificia Universidad Católica de Chile Santiago Chile INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy Department of Physics King’s College London London UK LAPP Université Savoie Mont Blanc CNRS/IN2P3 Annecy France AGH University of Krakow Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics University of Toronto Toronto Canada Department of Physics Brandeis University Waltham USA Department of Physics Northern Illinois University DeKalb USA Department of Physics Istanbul University Istanbul Türkiye Département de Physique Nucléaire et Corpusculaire Université de Genève Geneva Switzerland Particle Physics Department Rutherford Appleton Laboratory Didcot UK Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz USA CERN Geneva Switzerland Institut de Física d’Altes Energies (IFAE) Barcelona Institute of Science and Technology Barcelona Spain INFN Sezione di Pavia Pavia Italy Dipartimento di Fisica Università di Pavia Pavia Italy Institut für Physik Universität Mainz Mainz Germany Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania Departamento de Física Teórica y del Cosmos Universidad de Granada Granada Spain Affiliated with an International Laboratory Covered by a Coo

A search for leptoquark pair production decaying into $$te^- \bar{t}e^+$$ or $$t\mu ^- \bar{t}\mu ^+$$ in final states with multiple leptons is presented. The search is based on a dataset of pp collisions at $$\sqrt{s}=13~\text {TeV} $$ recorded with the ATLAS detector during Run 2 of the Large Hadron Collider, corresponding to an integrated luminosity of 139 fb $$^{-1}$$ . Four signal regions, with the requirement of at least three light leptons (electron or muon) and at least two jets out of which at least one jet is identified as coming from a b-hadron, are considered based on the number of leptons of a given flavour. The main background processes are estimated using dedicated control regions in a simultaneous fit with the signal regions to data. No excess above the Standard Model background prediction is observed and 95% confidence level limits on the production cross section times branching ratio are derived as a function of the leptoquark mass. Under the assumption of exclusive decays into $$te^{-}$$ ( $$t\mu ^{-}$$ ), the corresponding lower limit on the scalar mixed-generation leptoquark mass $$m_{\textrm{LQ}_{\textrm{mix}}^{\textrm{d}}}$$ is at 1.58 (1.59) TeV and on the vector leptoquark mass $$m_{{\tilde{U}}_1}$$ at 1.67 (1.67) TeV in the minimal coupling scenario and at 1.95 (1.95) TeV in the Yang–Mills scenario.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Spin-lattice relaxation of NV centers in nanodiamonds adsorbed on conducting and nonconducting surfaces

引用

Physical Review B 2025年第23期111卷 235421-235421页

作者： Izidor Benedičič Yuri Tanuma Žiga Gosar Bastien Anézo Mariusz Mrózek Adam Wojciechowski Denis Arčon Jožef Stefan Institute Jamova c.39 1000 Ljubljana Slovenia Faculty of Mathematics and Physics University of Ljubljana Jadranska c.19 1000 Ljubljana Slovenia Institut des Matériaux de Nantes Jean Rouxel (IMN) Nantes University 2 Rue de la Houssinière Nantes France Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University Prof.S. Łojasiewicza 11 30-348 Krakow Poland

The nitrogen-vacancy (NV) color centers in nanodiamonds can be utilized as low-cost, highly versatile quantum sensors for studying surface properties in condensed matter physics through the application of relaxometry protocols. For such applications, a detailed knowledge of the intrinsic relaxation processes of NV centers in nanodiamonds is necessary. Here, we study the spin-lattice relaxation rates of NV ensembles in nanodiamonds with average diameters of 40 nm and 3 µm between room temperature and ∼6K. The NV relaxation curves fit to a stretched-exponential form with a stretching exponent α≈0.7, implying the large distribution of relaxation times of individual centers within nanodiamonds. We determine the Orbach-like scattering on phonons as the leading relaxation mechanism. Finally, we discuss the viability of nanodiamonds as surface sensors when deposited on a metallic substrate and emphasize the need for well-controlled surface preparation techniques.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Establishing a Novel Process Route for Additive Manufacturing of NiCu-Based Alloy 400 – an Alignment of Gas Atomization, Laser Powder Bed Fusion and Design of Experiments

SSRN

引用

SSRN 2023年

作者： Roth, Jan-Philipp Šulák, Ivo Kruml, Tomáš Polkowski, Wojciech Dudziak, Tomasz Böhlke, Peter Krupp, Ulrich Jahns, Katrin Laboratory for Materials Design and Structural Integrity Faculty of Engineering and Computer Science Osnabrück University of Applied Sciences Albrechtstraße 30 Osnabrück49076 Germany Institute of Physics of Materials Czech Academy of Sciences Žižkova 513/22 Brno616 00 Czech Republic Krakow Institute of Technology Lukasiewicz Research Network Ulica Zakopiańska 73 Kraków30-418 Poland KME Germany GmbH Klosterstraße 29 Osnabrück49074 Germany Steel Institute IEHK RWTH Aachen University Intzestraße 1 Aachen52072 Germany

Alloy 400 is a corrosion-resistant, NiCu-based material which is used in numerous industrial applications, especially in marine environments and the high-temperature chemical industry. As conventional manufacturing limits geometrical complexity, additive manufacturing (AM) of the present alloy system promises great potential. For this purpose, a robust process chain, consisting of powder production via gas atomization and a Design of Experiments (DoE) approach for Laser Powder Bed Fusion (LPBF), was developed. With a narrow particle size distribution, powders were found to be spherical, flowable, consistent in chemical composition and hence, generally applicable to the LPBF process. Copper segregations at grain boundaries were clearly detected in powders. Still, for printed parts, only low-intensity micro segregations at cell walls were discovered, being correlated with the iterative thermal stress applied to solidified melt-pool-near grains during layer-by-layer manufacturing. For production of nearly defect-free LPBF structures, DoE suggested a single optimum parameter set instead of a broad energy density range. The latter key figure was found to be misleading in terms of part densities, making it an outdated tool in modern, software-based process parameter optimization. On the microscale, printed parts showed an orientation of melt pools along the build direction with a slight crystallographic [101] texture. Micro dendritic structures were detected on the nanoscale being intersected by a high number of dislocations. Residual porosity was reduced by application of hot isostatic pressing (HIP) while accepting a decrease in hardness. A vertical orientation of tensile test specimens with respect to the build platform resulted in low strength and high elongation when compared to a horizontal alignment. Checked against hot-extruded reference material, the LPBF variant performed better in terms of strength while lacking in ductility, being attributed to a finer grain s

关键词： Corrosion resistance

来源：评论

学校读者我要写书评

暂无评论

Search for effective Lorentz and CPT violation using ZEUS data

引用

Physical Review D 2023年第9期107卷 092008-092008页

作者： I. Abt R. Aggarwal V. Aushev O. Behnke A. Bertolin I. Bloch I. Brock N. H. Brook R. Brugnera A. Bruni P. J. Bussey A. Caldwell C. D. Catterall J. Chwastowski J. Ciborowski R. Ciesielski A. M. Cooper-Sarkar M. Corradi R. K. Dementiev S. Dusini J. Ferrando B. Foster E. Gallo D. Gangadharan A. Garfagnini A. Geiser G. Grzelak C. Gwenlan D. Hochman N. Z. Jomhari I. Kadenko U. Karshon P. Kaur R. Klanner I. A. Korzhavina N. Kovalchuk M. Kuze B. B. Levchenko A. Levy B. Löhr A. Longhin F. Lorkowski E. Lunghi I. Makarenko J. Malka S. Masciocchi K. Nagano J. D. Nam Yu. Onishchuk E. Paul I. Pidhurskyi A. Polini M. Przybycień A. Quintero M. Ruspa U. Schneekloth T. Schörner-Sadenius I. Selyuzhenkov M. Shchedrolosiev L. M. Shcheglova N. Sherrill I. O. Skillicorn W. Słomiński A. Solano L. Stanco N. Stefaniuk B. Surrow K. Tokushuku O. Turkot T. Tymieniecka A. Verbytskyi W. A. T. Wan Abdullah K. Wichmann M. Wing S. Yamada Y. Yamazaki A. F. Żarnecki O. Zenaiev Max-Planck-Institut für Physik München 80805 Germany DST-Inspire Faculty Department of Technology SPPU Pune 411007 India Department of Nuclear Physics National Taras Shevchenko University of Kyiv Kyiv 010333 Ukraine Deutsches Elektronen-Synchrotron DESY Notkestraße 85 22607 Hamburg Germany INFN Padova Padova Italy Deutsches Elektronen-Synchrotron DESY Platanenallee 6 15738 Zeuthen Germany Physikalisches Institut der Universität Bonn Bonn 53115 Germany Physics and Astronomy Department University College London London WC1E 6BT United Kingdom Dipartimento di Fisica e Astronomia dell’ Università and INFN Padova 35121 Italy INFN Bologna Bologna 40127 Italy School of Physics and Astronomy University of Glasgow Glasgow G12 8SU United Kingdom Department of Physics York University Ontario Canada M3J 1P3 The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Krakow 31-342 Poland Faculty of Physics University of Warsaw Warsaw 02-093 Poland Department of Physics University of Oxford Oxford OX1 3PJ United Kingdom Affiliated with an institute covered by a current or former collaboration agreement with DESY Hamburg University Institute of Experimental Physics Hamburg 22761 Germany Physikalisches Institut of the University of Heidelberg Heidelberg 69120 Germany Department of Particle Physics and Astrophysics Weizmann Institute Rehovot 7610001 Israel Sant Longowal Institute of Engineering and Technology Longowal Punjab 148106 India Department of Physics Tokyo Institute of Technology Tokyo 152-8550 Japan Raymond and Beverly Sackler Faculty of Exact Sciences School of Physics Tel Aviv University Tel Aviv 60000 Israel Department of Physics Indiana University Bloomington Bloomington Indiana 47405 USA GSI Helmholtzzentrum für Schwerionenforschung GmbH Darmstadt 64291 Germany Institute of Particle and Nuclear Studies KEK Tsukuba 300-3256 Japan Department of Physics Temple University Philadelphia Pennsylvania 19122 USA Institut für Kernph

Lorentz and CPT symmetry in the quark sector of the Standard Model are studied in the context of an effective field theory using ZEUS e±p data. Symmetry-violating effects can lead to time-dependent oscillations of otherwise time-independent observables, including scattering cross sections. An analysis using five years of inclusive neutral-current deep inelastic scattering events corresponding to an integrated HERA luminosity of 372 pb−1 at s=318 GeV has been performed. No evidence for oscillations in sidereal time has been observed within statistical and systematic uncertainties. Constraints, most for the first time, are placed on 42 coefficients parametrizing dominant CPT-even dimension-four and CPT-odd dimension-five spin-independent modifications to the propagation and interaction of light quarks.

关键词： Deep inelastic scattering Effective field theory Hypothetical particle physics models Lorentz symmetry Lepton-hadron colliders

来源：评论

学校读者我要写书评

暂无评论

Unusual Dynamic Charge Correlations in Simple-Tetragonal HgBa2CuO4+δ

引用

Physical Review X 2020年第2期10卷 021059-021059页

作者： B. Yu W. Tabis I. Bialo F. Yakhou N. B. Brookes Z. Anderson Y. Tang G. Yu M. Greven School of Physics and Astronomy University of Minnesota Minneapolis Minnesota 55455 USA Institute of Solid State Physics TU Wien 1040 Vienna Austria AGH University of Science and Technology Faculty of Physics and Applied Computer Science 30-059 Krakow Poland European Synchrotron Radiation Facility 71 Avenue de Martyrs CS40220 F-38043 Grenoble Cedex 9 France

The charge-density-wave (CDW) instability in the underdoped, pseudogap part of the cuprate phase diagram has been a major recent research focus, yet measurements of dynamic, energy-resolved charge correlations are still in their infancy. Such information is crucial in order to help discern the connection between CDW and pseudogap phenomena, and to understand the extent to which charge correlations in general shape the phase diagram. We report a resonant inelastic x-ray scattering study of the underdoped cuprate superconductor HgBa2CuO4+δ (Tc=70 K). At 250 K, above the previously established temperature TCDW≈200 K that signifies the onset of quasistatic short-range CDW order, we observe significant dynamic correlations that are broadly peaked at about 40 meV and centered at the two-dimensional wave vector qCDW. This energy scale is comparable to both the superconducting gap and the low-energy pseudogap. At 70 K, we observe a quasistatic CDW peak at qCDW, but the dynamic correlations around 40 meV remain virtually unchanged, and we identify a new feature: dynamic correlations well above the optic phonon range that are broadly peaked in the 150–200 meV range. A similar energy scale was previously identified in other experiments as a high-energy pseudogap. The observation of three distinct features in the charge response is highly unusual for a CDW system and suggests that charge order in the cuprates is complex. We demonstrate that other single-layer cuprates exhibit approximately the same relative strength of high- to low-temperature energy-integrated charge signal, which points to the universal existence of significant dynamic correlations. Intriguingly, the two energy scales identified here are also comparable to those of the superconducting glue function extracted from other spectroscopic techniques, consistent with a dual charge and magnetic nature of the pairing glue. We further determine the paramagnon dispersion along [1, 0], across qCDW, and find it to be co

关键词： Charge order Pseudogap Superconductivity Cuprates Resonant inelastic x-ray scattering

来源：评论

学校读者我要写书评

暂无评论

Helical and topological phase detection based on nonlocal conductance measurements in a three terminal junction

arXiv

引用

arXiv 2021年

作者： Wójcik, Pawel Sticlet, D. Szumniak, P. Nowak, M.P. AGH University of Science and Technology Faculty of Physics and Applied Computer Science al. A. Mickiewicza 30 Krakow30-059 Poland National Institute for R&D of Isotopic and Molecular Technologies 67-103 Donat Cluj-Napoca400293 Romania AGH University of Science and Technology Academic Centre for Materials and Nanotechnology al. A. Mickiewicza 30 Krakow30-059 Poland

The helical state is a fundamental prerequisite for many spintronics applications and Majorana zero mode engineering in nanoscopic semiconductors. Its existence in quasi-one-dimensional nanowires was predicted to be detectable as a characteristic reentrant behavior in the conductance, which in a typical two-terminal architecture may be difficult to distinguish from other possible phenomena such as Fabry-Perot oscillations. Here we present an alternative method of helical gap detection free of the mentioned ambiguity, and based on the nonlocal conductance measurements in a three-terminal junction. We find that the interplay between the spin-orbit coupling and the perpendicular magnetic field leads to a spin-dependent trajectory of electrons and as a consequence a preferential injection of electrons in one of the arms. This causes a remarkable enhancement of nonlocal conductance in the helical gap regime. We show that this phenomenon can be also used to detect the topological superconducting phase when the junction is partially proximitized by an s-wave superconductor. Copyright © 2021, The Authors. All rights reserved.

关键词： Signal detection

来源：评论

学校读者我要写书评

暂无评论

Revisiting gauge invariance and Reggeization of pion exchange

引用

Physical Review D 2024年第11期110卷 114012-114012页

作者： Glòria Montaña Daniel Winney Łukasz Bibrzycki César Fernández-Ramírez Giorgio Foti Nadine Hammoud Vincent Mathieu Robert J. Perry Alessandro Pilloni Theory Center Thomas Jefferson National Accelerator Facility Newport News Virginia 23606 USA Helmholtz-Institut für Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics Universität Bonn D-53115 Bonn Germany AGH University of Krakow Faculty of Physics and Applied Computer Science PL-30-059 Kraków Poland Departamento de Física Interdisciplinar Universidad Nacional de Educación a Distancia (UNED) E-28040 Madrid Spain Dipartimento di Scienze Matematiche e Informatiche Scienze Fisiche e Scienze della Terra Università degli Studi di Messina I-98122 Messina Italy INFN Sezione di Catania I-95123 Catania Italy Departament de Física Quàntica i Astrofísica and Institut de Ciències del Cosmos Universitat de Barcelona E-08028 Barcelona Spain

The Reggeized pion is expected to provide the main contribution to the forward cross section in light meson photoproduction reactions with charge exchange at high energies. We discuss the Reggeization of pion exchange in charged pion photoproduction with an emphasis on consistency with current conservation. We show that the gauge-invariant amplitude for the exchange of a particle with a generic even spin J≥2 in the t channel is analytic at J=0 and that it can be interpreted in terms of the nucleon electric current. This enables us to reconcile the dynamics in the s and u channel, which involves also nucleon exchanges, with the amplitude expressed in terms of t-channel partial waves, as required by Regge theory.

关键词： Hadron production Hadrons Light mesons Pions

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：