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arXiv 2024年

作者： Bruno, Roberto De Marco, Rossana D’Amicis, Raffaella Perrone, Denise Marcucci, Maria Federica telloni, Daniele Marino, Raffaele sorriso-Valvo, Luca Fortunato, Vito Mele, Gennaro Monti, Francesco Fedorov, Andrei Louarn, Philippe Owen, Chris J. Livi, stefano INAF-Istituto di Astrofisica e Planetologia Spaziali Via Fosso del Cavaliere 100 Roma00133 Italy ASI - Italian Space Agency Rome Italy INAF - Osservatorio Astrofisico di Torino Torino Italy Univ Lyon CNRS École Centrale de Lyon INSA Lyon Univ Claude Bernard Lyon I Laboratoire de Mécanique des Fluides et d’Acoustique UMR5509 ÉcullyF-69134 France CNR Istituto per la Scienza e la Tecnologia dei Plasmi Via Amendola 122/D Bari70126 Italy Planetek Italia S.R.L. Via Massaua 12 BA Bari70132 Italy LEONARDO spa Grottaglie Taranto74023 Italy TSD-Space Via San Donato 23 Napoli80126 Italy Institut de Recherche en Astrophysique et Planétologie CNRS Université de Toulouse CNES Toulouse France Mullard Space Science Laboratory University College London Holmbury St. Mary Dorking SurreyRH5 6NT United Kingdom Southwest Research Institute 6220 Culebra Road San AntonioTX78238 United States School of Electrical Engineering and Computer Science KTH Royal Institute of Technology Teknikringen 31 StockholmSE-11428 Sweden

the problems of heating and acceleration of solar wind particles are of significant and enduring interest in astrophysics. the interactions between waves and particles are crucial in determining the distributions of proton and alpha particles, resulting in non-Maxwellian characteristics including temperature anisotropies and particle beams. these processes can be better understood as long as the beam can be separated from the core for the two major components of the solar wind. We utilized an alternative numerical approach that leverages the clustering technique employed in Machine Learning to differentiate the primary populations within the velocity distribution, rather than employing the conventional bi-Maxwellian fitting method. separation of the core and beam revealed new features for protons and alphas. We estimated that the total temperature of the two beams was slightly higher than that of their respective cores, and the temperature anisotropy for the cores and beams was larger than 1. We concluded that the temperature ratio between alphas and protons largely over 4 is due to the presence of a massive alpha beam, which is approximately 50% of the alpha core. We provided evidence that the alpha core and beam populations are sensitive to Alfvénic fluctuations and the surfing effect found in the literature can be recovered only when considering the core and beam as a single population. several similarities between proton and alpha beams would suggest a common and local generation mechanism not shared with the alpha core, which may not have necessarily been accelerated and heated locally. Copyright © 2024, the Authors. All rights reserved.

关键词： solar wind

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towards Neural Charged Particle tracking in Digital tracking Calorimeters with Reinforcement Learning

TechRxiv

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techRxiv 2022年

作者： Kortus, tobias Keidel, Ralf Gauger, Nicolas R. Aehle, Max Alme, Johan Barnaföldi, Gergely Gábor Bodova, tea Borshchov, Vyacheslav van den Brink, Anthony Chaar, Mamdouh Eikeland, Viljar Feofilov, Gregory Garth, Christoph Genov, Georgi Grøttvik, Ola Helstrup, Håvard igolkin, sergey Keidel, Ralf Kobdaj, Chinorat Leonhardt, Viktor Mehendale, shruti Mulawade, Raju Ningappa Odland, Odd Harald O’Neill, George Papp, Gábor Peitzmann, thomas Pettersen, Helge Egil seime Piersimoni, Pierluigi Protsenko, Maksym Rauch, Max Rehman, Attiq Ur Richter, Matthias Röhrich, Dieter santana, Joshua schilling, Alexander seco, Joao songmoolnak, Arnon sudár, Ákos sølie, Jarle Rambo tambave, Ganesh tymchuk, ihor Ullaland, Kjetil Varga-Kofarago, Monika Volz, Lennart Wagner, Boris Wendzel, steffen Wiebel, Alexander Xiao, RenZheng Yang, shiming Yokoyama, Hiroki Zillien, sebastian University of Applied Sciences Worms Worms67549 Germany Chair for Scientific Computing TU Kaiserslautern Kaiserslautern67663 Germany Department of Physics and Technology University of Bergen Bergen5007 Norway Wigner Research Centre for Physics Budapest Hungary Kharkiv Ukraine Institute for Subatomic Physics Utrecht University/Nikhef Utrecht Netherlands St. Petersburg University St. Petersburg Russia Scientific Visualization Lab TU Kaiserslautern Kaiserslautern67663 Germany Department of Computer Science Electrical Engineering and Mathematical Sciences Western Norway University of Applied Sciences Bergen5020 Norway Institute of Science Suranaree University of Technology Nakhon Ratchasima Thailand Department of Oncology and Medical Physics Haukeland University Hospital Bergen5021 Norway Institute for Physics Eötvös Loránd University 1/A Pázmány P. Sétány BudapestH-1117 Hungary UniCamillus Saint Camillus International University of Health Sciences Rome Italy Department of Physics University of Oslo Oslo0371 Norway Department of Biomedical Physics in Radiation Oncology DKFZ—German Cancer Research Center Heidelberg Germany Department of Physics and Astronomy Heidelberg University Heidelberg Germany Budapest University of Technology and Economics Budapest Hungary Department of Diagnostic Physics Division of Radiology and Nuclear Medicine Oslo University Hospital Oslo Norway Bhubaneswar India Biophysics GSI Helmholtz Center for Heavy Ion Research GmbH Darmstadt Germany Department of Medical Physics and Biomedical Engineering University College London London United Kingdom College of Mechanical & Power Engineering China Three Gorges University Yichang China

We propose a novel technique for reconstructing charged particles in digital tracking calorimeters using reinforcement learning aiming to benefit from the rapid progress and success of neural network architectures without the dependency on simulated or manually-labeled data. Here we optimize by trial-and-error a behavior policy acting as an approximation to the full combinatorial optimization problem, maximizing the physical plausibility of sampled trajectories. in modern processing pipelines used in high energy physics and related applications, tracking plays an essential role allowing to identify and follow charged particle trajectories traversing particle detectors. Due to the high multiplicity of charged particles and their physical interactions, randomly deflecting the particles, the reconstruction is a challenging undertaking, requiring fast, accurate and robust algorithms. Our approach works on graph-structured data, capturing track hypotheses through edge connections between particles in the detector layers. We demonstrate in a comprehensive study on simulated data for a particle detector used for proton computed tomography, the high potential as well as the competitiveness of our approach compared to a heuristic search algorithm and a model trained on ground truth. Finally, we point out limitations of our approach, guiding towards a robust foundation for further development of reinforcement learning based tracking. © 2022, CC BY.

关键词： Reinforcement learning

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Unveiling the Cosmic Gems Arc at z ∼ 10.2 with JWst

arXiv

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arXiv 2024年

作者： Bradley, Larry D. Adamo, Angela Vanzella, Eros sharon, Keren Brammer, Gabriel Coe, Dan Diego, Jose M. Kokorev, Vasily Mahler, Guillaume Oguri, Masamune Abdurro'uf Bhatawdekar, Rachana Christensen, Lise Fujimoto, seiji Hashimoto, takuya Hsiao, tiger Y.-Y. inoue, Akio K. Jiménez-teja, Yolanda Messa, Matteo Norman, Colin Ricotti, Massimo tamura, Yoichi Windhorst, Rogier A. Xu, Xinfeng Zitrin, Adi 3700 San Martin Drive BaltimoreMD21218 United States The Oskar Klein Centre Department of Astronomy Stockholm University AlbaNova StockholmSE-106 91 Sweden INAF-OAS Osservatorio di Astrofisica e Scienza dello Spazio di Bologna via Gobetti 93/3 BolognaI-40129 Italy Department of Astronomy University of Michigan 1085 S. University Ave Ann ArborMI48109 United States Copenhagen Denmark Niels Bohr Institute University of Copenhagen Jagtvej 128 CopenhagenDK-2200 N Denmark STScI BaltimoreMD United States Center for Astrophysical Sciences Department of Physics and Astronomy The Johns Hopkins University 3400 N Charles St. BaltimoreMD21218 United States Avda. Los Castros s/n. Santander39005 Spain Kapteyn Astronomical Institute University of Groningen P.O. Box 800 Groningen9700AV Netherlands Institute for Computational Cosmology Durham University South Road DurhamDH1 3LE United Kingdom Centre for Extragalactic Astronomy Durham University South Road DurhamDH1 3LE United Kingdom STAR Institute Quartier Agora - Allée du six Août 19c LiègeB-4000 Belgium Center for Frontier Science Chiba University 1-33 Yayoi-cho Inage-ku Chiba263-8522 Japan Department of Physics Graduate School of Science Chiba University 1-33 Yayoi-Cho Inage-Ku Chiba263-8522 Japan Camino Bajo del Castillo s/n Villanueva de la Cañada Madrid28692 Spain Department of Astronomy The University of Texas at Austin AustinTX78712 United States Graduate School of Pure and Applied Sciences University of Tsukuba 1-1-1 Tennodai Ibaraki Tsukuba305-8571 Japan Tomonaga Center for the History of the Universe University of Tsukuba 1-1-1 Tennodai Ibaraki Tsukuba305-8571 Japan Department of Physics School of Advanced Science and Engineering Faculty of Science and Engineering Waseda University 3-4-1 Okubo Shinjuku Tokyo169-8555 Japan Waseda Research Institute for Science and Engineering Faculty of Science and Engineering Waseda University 3-4-1 Okubo Shinjuku Tokyo

We present recent JWst NiRCam imaging observations of sPt0615-JD (also known as the Cosmic Gems Arc), lensed by the galaxy cluster sPt-CL J0615−5746. the 5′′-long arc is the most highly magnified z > 10 galaxy known, straddling the lensing critical curve and revealing five star clusters with radii ∼ 1 pc or less. We measure the full arc to have F200W 24.5 AB mag, consisting of two mirror images, each 25.3 AB mag with a magnification µ ∼ 60 (delensed 29.7 AB mag, MUV = −17.8). the galaxy has an extremely strong Lyman break F115W−F200W > 3.2 mag (2σ lower limit), is undetected in all bluer filters (phot = 10.2 ± 0.2 (95% confidence) with no significant likelihood below z ∗ ∼ 2.4 − 5.6 × 107M☉, young mass-weighted age of ∼ 21 − 79 Myr, low dust content (AV ☉. We identify a fainter third counterimage candidate within 2′′. 2 of the predicted position, lensed to AB mag 28.4 and magnified by µ ∼ 2, suggesting the fold arc may only show ∼ 60% of the galaxy. sPt0615-JD is a unique laboratory to study star clusters observed within a galaxy just 460 Myr after the Big Bang. © 2024, CC BY.

关键词： Galaxies

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Future Perspectives for Gamma-ray Burst Detection from space

arXiv

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arXiv 2024年

作者： Bozzo, Enrico Amati, Lorenzo Baumgartner, Wayne Chang, tzu-Ching Cordier, Bertrand De Angelis, Nicolas Doi, Akihiro Feroci, Marco Froning, Cynthia Gaskin, Jessica Goldstein, Adam Götz, Diego Grove, Jon E. Guiriec, sylvain Hernanz, Margarita Michelle Hui, C. Jenke, Peter Kocevski, Daniel Kole, Merlin Kouveliotou, Chryssa Maccarone, thomas McConnell, Mark L. Matsuhara, Hideo O’Brien, Paul Produit, Nicolas Ray, Paul s. Roming, Peter santangelo, Andrea seiffert, Michael sun, Hui van der Horst, Alexander Veres, Peter Wei, Jianyan White, Nicholas Wilson-Hodge, Colleen Yonetoku, Daisuke Yuan, Weimin Zhang, shuang-Nan INAF-OAS Bologna via P. Gobetti 93/3 Bologna40129 Italy NASA Marshall Space Flight Center HuntsvilleAL35812 United States Jet Propulsion Lab 4800 Oak Grove Dr PasadenaCA91109 United States INAF-IAPS Roma via del Fosso del Cavaliere 100 RomaI-00133 Italy DPNC University of Geneva quai Ernest-Ansermet 24 Geneva1205 Switzerland Space Science Division U.S. Naval Research Laboratory WashingtonDC20375 United States Department of Astronomy University of Geneva Chemin d’Ecogia 16 Versoix1290 Switzerland IRFU Département d’Astrophysique CEA Université Paris-Saclay Gif-sur-YvetteF-91191 France Science and Technology Institute Universities Space Research Association HuntsvilleAL35805 United States 3-1-1 Yoshinodai Chuo-ku Sagamihara Kanagawa229-8510 Japan Southwest Research Institute Space Science and Engineering Division 6220 Culebra Road San AntonioTX78238 United States Department of Physics George Washington University Corcoran Hall 725 21st Street NW WashingtonDC20052 United States Campus UAB Carrer de can Magrans s/n Bellaterra Barcelona08193 Spain Barcelona Spain University of Alabama in Huntsville HuntsvilleAL35805 United States Department of Physics & Astronomy Texas Tech University Box 41051 LubbockTX79409-1051 United States Space Science Center University of New Hampshire DurhamNH03824 United States Department of Earth Oceans and Space Southwest Research Institute DurhamNH03824 United States School of Physics and Astronomy University of Leicester LeicesterLE1 7RH United Kingdom Institut für Astronomie und Astrophysik Kepler Center for Astro and Particle Physics Eberhard Karls Universität Sand 1 TübingenD-72076 Germany National Astronomical Observatories Chinese Academy of Sciences Beijing100101 China College of Science and Engineering School of Mathematics and Physics Kanazawa University Kakuma Ishikawa Kanazawa920-1192 Japan University of Chinese Academy of Sciences Chinese Academy of Sciences B

since their first discovery in the late 1960s, Gamma-ray bursts have attracted an exponentially growing interest from the international community due to their central role in the most highly debated open questions of the modern research of astronomy, astrophysics, cosmology, and fundamental physics. these range from the intimate nuclear composition of high density material within the core of ultra-dense neuron stars, to stellar evolution via the collapse of massive stars, the production and propagation of gravitational waves, as well as the exploration of the early Universe by unveiling first stars and galaxies (assessing also their evolution and cosmic re-ionization). GRBs have stimulated in the past ∼50 years the development of cutting-edge technological instruments for observations of high energy celestial sources from space, leading to the launch and successful operations of many different scientific missions (several of them still in data taking mode nowadays). in this review, we provide a brief description of the GRB-dedicated missions from space being designed and developed for the future. the list of these projects, not meant to be exhaustive, shall serve as a reference to interested readers to understand what is likely to come next to lead the further development of GRB research and associated phenomenology. © 2024, CC BY.

关键词： Gamma rays

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Placental Vessel segmentation and Registration in Fetoscopy: Literature Review and MiCCAi FetReg2021 Challenge Findings

arXiv

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arXiv 2022年

作者： Bano, sophia Casella, Alessandro Vasconcelos, Francisco Qayyum, Abdul Benzinou, Abdesslam Mazher, Moona Meriaudeau, Fabrice Lena, Chiara Cintorrino, ilaria Anita De Paolis, Gaia Romana Biagioli, Jessica Grechishnikova, Daria Jiao, Jing Bai, Bizhe Qiao, Yanyan Bhattarai, Binod Gaire, Rebati Raman subedi, Ronast Vazquez, Eduard Plotka, szymon Lisowska, Aneta sitek, Arkadiusz Attilakos, George Wimalasundera, Ruwan David, Anna L. Paladini, Dario Deprest, Jan De Momi, Elena Mattos, Leonardo s. Moccia, sara stoyanov, Danail Department of Computer Science University College London United Kingdom Department of Advanced Robotics Istituto Italiano di Tecnologia Italy Department of Electronics Information and Bioengineering Politecnico di Milano Italy The BioRobotics Institute Department of Excellence in Robotics and AI Scuola Superiore Sant'Anna Italy Fetal Medicine Unit Elizabeth Garrett Anderson Wing University College London Hospital United Kingdom EGA Institute for Women's Health Faculty of Population Health Sciences University College London United Kingdom Department of Development and Regeneration University Hospital Leuven Belgium Department of Fetal and Perinatal Medicine Istituto Giannina Gaslini Italy ENIB UMR CNRS 6285 LabSTICC 29238 France Department of Computer Engineering and Mathematics University Rovira i Virgili Spain ImViA Laboratory University of Bourgogne Franche-Comté France Physics Department Lomonosov Moscow State University Russia Fudan University China Medical Computer Vision and Robotics Group Department of Mathematical and Computational Sciences University of Toronto Canada Co. Ltd China NepAL Applied Mathematics and Informatics Institute for Research Nepal Redev Technology United Kingdom Sano Center for Computational Medicine Poland Quantitative Healthcare Analysis Group Informatics Institute University of Amsterdam Amsterdam Netherlands Center for Advanced Medical Computing and Simulation Massachusetts General Hospital Harvard Medical School BostonMA United States

Fetoscopy laser photocoagulation is a widely adopted procedure for treating twin-to-twin transfusion syndrome (ttts). the procedure involves photocoagulation pathological anastomoses to restore a physiological blood exchange among twins. the procedure is particularly challenging, from the surgeon's side, due to the limited field of view, poor manoeuvrability of the fetoscope, poor visibility due to amniotic fluid turbidity, and variability in illumination. these challenges may lead to increased surgery time and incomplete ablation of pathological anastomoses, resulting in persistent ttts. computer-assisted intervention (CAi) can provide ttts surgeons with decision support and context awareness by identifying key structures in the scene and expanding the fetoscopic field of view through video mosaicking. Research in this domain has been hampered by the lack of high-quality data to design, develop and test CAi algorithms. through the Fetoscopic Placental Vessel segmentation and Registration (FetReg2021) challenge, which was organized as part of the MiCCAi2021 Endoscopic Vision (EndoVis) challenge, we released the first large-scale multi-center ttts dataset for the development of generalized and robust semantic segmentation and video mosaicking algorithms with a focus on creating drift-free mosaics from long duration fetoscopy videos. For this challenge, we released a dataset of 2060 images, pixel-annotated for vessels, tool, fetus and background classes, from 18 in-vivo ttts fetoscopy procedures and 18 short video clips of an average length of 411 frames for developing placental scene segmentation and frame registration for mosaicking techniques. seven teams participated in this challenge and their model performance was assessed on an unseen test dataset of 658 pixel-annotated images from 6 fetoscopic procedures and 6 short clips. the challenge provided an opportunity for creating generalized solutions for fetoscopic scene understanding and mosaicking. in this paper,

关键词： Pixels

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Genomic investigations of unexplained acute hepatitis in children

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Nature 2023年第7961期617卷 564-573页

作者： Morfopoulou, sofia Buddle, sarah torres Montaguth, Oscar Enrique Atkinson, Laura Guerra-Assunção, José Afonso Moradi Marjaneh, Mahdi Zennezini Chiozzi, Riccardo storey, Nathaniel Campos, Luis Hutchinson, J. Ciaran Counsell, John R. Pollara, Gabriele Roy, sunando Venturini, Cristina Antinao Diaz, Juan F. siam, Ala’a tappouni, Luke J. Asgarian, Zeinab Ng, Joanne Hanlon, Killian s. Lennon, Alexander McArdle, Andrew Czap, Agata Rosenheim, Joshua Andrade, Catarina Anderson, Glenn Lee, Jack C. D. Williams, Rachel Williams, Charlotte A. tutill, Helena Bayzid, Nadua Martin Bernal, Luz Marina Macpherson, Hannah Montgomery, Kylie-Ann Moore, Catherine templeton, Kate Neill, Claire Holden, Matt Gunson, Rory shepherd, samantha J. shah, Priyen Cooray, samantha Voice, Marie steele, Michael Fink, Colin Whittaker, thomas E. santilli, Giorgia Gissen, Paul Kaufer, Benedikt B. Reich, Jana Andreani, Julien simmonds, Peter Alrabiah, Dimah K. Castellano, sergi Chikowore, Primrose Odam, Miranda Rampling, tommy Houlihan, Catherine Hoschler, Katja talts, tiina Celma, Cristina Gonzalez, suam Gallagher, Eileen simmons, Ruth Watson, Conall Mandal, sema Zambon, Maria Chand, Meera Hatcher, James De, surjo Baillie, Kenneth semple, Malcolm Gracie Bellos, Evangelos Broderick, Claire Channon-Wells, samuel De, tisham D’souza, Giselle Elorrieta, Leire Estramiana Estrada-Rivadeneyra, Diego Galassini, Rachel Habgood-Coote, Dominic Hamilton, shea Jackson, Heather Kavanagh, James Marjaneh, Mahdi Moradi Menikou, stephanie Nichols, samuel Nijman, Ruud Patel, Harsita Pennisi, ivana Powell, Oliver Reid, Ruth Vito, Ortensia Whittaker, Elizabeth Wilson, Clare Womersley, Rebecca Abdulla, Amina Darnell, sarah Mustafa, sobia Georgiou, Pantelis Manzano, Jesus-Rodriguez Moser, Nicolas Carter, Michael tibby, shane Cohen, Jonathan Davis, Francesca Kenny, Julia Wellman, Paul White, Marie Fish, Matthew Jennings, Aislinn shankar-Hari Fidler, Katy Agranoff, Dan Richmond, Vivien seal, Matthew Faust, saul Owen, Dan Ensom, Ruth McKay, sarah Mondo, Diana shaji, Mariya schra Infection Immunity and Inflammation Department Great Ormond Street Institute of Child Health University College London London United Kingdom Section for Paediatrics Department of Infectious Diseases Faculty of Medicine Imperial College London London United Kingdom Department of Microbiology Virology and Infection Control Great Ormond Street Hospital for Children NHS Foundation Trust London United Kingdom Section of Virology Department of Infectious Diseases Faculty of Medicine Imperial College London London United Kingdom University College London Mass Spectrometry Science Technology Platform Division of Biosciences University College London London United Kingdom Histopathology Department Great Ormond Street Hospital for Children NHS Foundation Trust London United Kingdom Research Department of Targeted Intervention Division of Surgery and Interventional Science University College London London United Kingdom Division of Infection and Immunity University College London London United Kingdom Gene Transfer Technology Group EGA-Institute for Women’s Health University College London London United Kingdom Genetics and Genomic Medicine Department Great Ormond Street Institute of Child Health University College London London United Kingdom Department of Neurodegenerative Disease Queen Square Institute of Neurology University College London London United Kingdom Wales Specialist Virology Centre Public Health Wales Microbiology Cardiff University Hospital of Wales Cardiff United Kingdom Department of Medical Microbiology Edinburgh Royal Infirmary Edinburgh United Kingdom Public Health Agency Northern Ireland Belfast United Kingdom School of Medicine University of St. Andrews St. Andrews United Kingdom Public Health Scotland Edinburgh United Kingdom West of Scotland Specialist Virology Centre Glasgow United Kingdom Micropathology Ltd University of Warwick Science Park Coventry United Kingdom Molecular and Cellular Immunology Great Ormond Street Institute of C

since its first identification in scotland, over 1,000 cases of unexplained paediatric hepatitis in children have been reported worldwide, including 278 cases in the UK1. Here we report an investigation of 38 cases, 6... 详细信息

since its first identification in scotland, over 1,000 cases of unexplained paediatric hepatitis in children have been reported worldwide, including 278 cases in the UK<sup>1sup>. Here we report an investigation of 38 cases, 66 age-matched immunocompetent controls and 21 immunocompromised comparator participants, using a combination of genomic, transcriptomic, proteomic and immunohistochemical methods. We detected high levels of adeno-associated virus 2 (AAV2) DNA in the liver, blood, plasma or stool from 27 of 28 cases. We found low levels of adenovirus (HAdV) and human herpesvirus 6B (HHV-6B) in 23 of 31 and 16 of 23, respectively, of the cases tested. By contrast, AAV2 was infrequently detected and at low titre in the blood or the liver from control children with HAdV, even when profoundly immunosuppressed. AAV2, HAdV and HHV-6 phylogeny excluded the emergence of novel strains in cases. Histological analyses of explanted livers showed enrichment for t cells and B lineage cells. Proteomic comparison of liver tissue from cases and healthy controls identified increased expression of HLA class 2, immunoglobulin variable regions and complement proteins. HAdV and AAV2 proteins were not detected in the livers. instead, we identified AAV2 DNA complexes reflecting both HAdV-mediated and HHV-6B-mediated replication. We hypothesize that high levels of abnormal AAV2 replication products aided by HAdV and, in severe cases, HHV-6B may have triggered immune-mediated hepatic disease in genetically and immunologically predisposed children. © 2023, the Author(s).

关键词： Clinical microbiology Paediatric research

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Measurements of the Higgs boson production cross section in the four-lepton final state in proton-proton collisions at = 13.6 teV

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Journal of High Energy Physics 2025年第5期2025卷 1-46页

作者： Chekhovsky, V. Hayrapetyan, A. Makarenko, V. tumasyan, A. Adam, W. Andrejkovic, J. W. Benato, L. Bergauer, t. Chatterjee, s. Damanakis, K. Dragicevic, M. Hussain, P. s. Jeitler, M. Krammer, N. Li, A. Liko, D. Mikulec, i. schieck, J. schöfbeck, R. schwarz, D. sonawane, M. Waltenberger, W. Wulz, C.-E. Janssen, t. Kwon, H. Van Laer, t. Van Mechelen, P. Breugelmans, N. D’Hondt, J. Dansana, s. De Moor, A. Delcourt, M. Heyen, F. Hong, Y. Lowette, s. Makarenko, i. Müller, D. tavernier, s. tytgat, M. Van Onsem, G. P. Van Putte, s. Vannerom, D. Bilin, B. Clerbaux, B. Das, A. K. De Bruyn, i. De Lentdecker, G. Evard, H. Favart, L. Gianneios, P. Khalilzadeh, A. Khan, F. A. Malara, A. shahzad, M. A. thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Gokbulut, G. Knolle, J. Lambrecht, L. Marckx, D. skovpen, K. Van Den Bossche, N. van der Linden, J. Vandenbroeck, J. Wezenbeek, L. Bein, s. Benecke, A. Bethani, A. Bruno, G. Caputo, C. De Favereau De Jeneret, J. Delaere, C. Donertas, i. s. Giammanco, A. Guzel, A. O. Jain, sa. Lemaitre, V. Lidrych, J. Mastrapasqua, P. tran, t. t. turkcapar, s. Alves, G. A. Coelho, E. Correia silva, G. Hensel, C. Menezes De Oliveira, t. Mora Herrera, C. Rebello teles, P. soeiro, M. tonelli Manganote, E. J. Vilela Pereira, A. Aldá Júnior, W. L. Barroso Ferreira Filho, M. Brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, E. M. Da silveira, G. G. De Jesus Damiao, D. Fonseca De souza, s. Gomes De souza, R. Laux Kuhn, t. Macedo, M. Martins, J. Mota Amarilo, K. Mundim, L. Nogima, H. Pinheiro, J. P. santoro, A. sznajder, A. thiel, M. Bernardes, C. A. Calligaris, L. Fernandez Perez tomei, t. R. Gregores, E. M. Maietto silverio, i. Mercadante, P. G. Novaes, s. F. Orzari, B. Padula, sandra s. scheurer, V. Aleksandrov, A. Antchev, G. Hadjiiska, R. iaydjiev, P. Misheva, M. shopova, M. sultanov, G. Dimitrov, A. Litov, L. Pavlov, B. Petkov, P. Petrov, A. shumka, E. Keshri, s. Laroze, D. thakur, s. Cheng, t. Javaid, t. Yuan, L. Hu, Z. Liang, Z. Liu, J. Chen, G. M. Chen, H. Yerevan Physics Institute Yerevan Armenia Yerevan State University Yerevan Armenia Institut für Hochenergiephysik Vienna Austria TU Wien Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Ghent University Ghent Belgium Université Libre de Bruxelles Bruxelles Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil FACAMP — Faculdades de Campinas Sao Paulo Brazil Universidade Estadual de Campinas Campinas Brazil Federal University of Rio Grande do Sul Porto Alegre Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China University of Chinese Academy of Sciences Beijing China Center of Advanced Science and Technology Beijing China Spallation Neutron Source Guangdong China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Guangdong Provincial Key Laboratory of Nuclear Science and Guangdong-Hong Kong Joint Laboratory of Quantum Matter South China Normal University Guangzhou China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Nanjing Normal University Nanjing China Henan Normal University Xinxiang China University of Shanghai for Science and Technology Shanghai China The University of Iowa Iowa City Iowa U.S.A. Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) — Fudan University Shanghai China Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad

the measurements of the Higgs boson (H) production cross sections performed by the CMS Collaboration in the four-lepton (4ℓ, ℓ = e, μ) final state at a center-of-mass energy $$\sqrt{s}$$ = 13.6 teV are presented. these measurements are based on data collected with the CMS detector at the CERN LHC in 2022, corresponding to an integrated luminosity of 34.7 fb−1. Cross sections are measured in a fiducial region closely matching the experimental acceptance, both inclusively and differentially, as a function of the transverse momentum and the absolute value of the rapidity of the four-lepton system. the H → ZZ → 4ℓ inclusive fiducial cross section is measured to be $${2.89}_{-0.49}^{+0.53}{\left({\text{stat}}\right)}_{-0.21}^{+0.29}\left({\text{syst}}\right)$$ fb, in agreement with the standard model expectation of $${3.09}_{-0.24}^{+0.27}$$ fb.

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search for high-mass resonances in a final state comprising a gluon and two hadronically decaying W bosons in proton-proton collisions at = 13 teV

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Journal of High Energy Physics 2025年第2期2025卷 1-46页

作者： Hayrapetyan, A. tumasyan, A. Adam, W. Andrejkovic, J. W. Benato, L. Bergauer, t. Chatterjee, s. Damanakis, K. Dragicevic, M. Hussain, P. s. Jeitler, M. Krammer, N. Li, A. Liko, D. Mikulec, i. schieck, J. schöfbeck, R. schwarz, D. sonawane, M. Waltenberger, W. Wulz, C.-E. Janssen, t. Van Laer, t. Van Mechelen, P. Breugelmans, N. D’Hondt, J. Dansana, s. De Moor, A. Delcourt, M. Heyen, F. Lowette, s. Makarenko, i. Müller, D. tavernier, s. tytgat, M. Van Onsem, G. P. Van Putte, s. Vannerom, D. Bilin, B. Clerbaux, B. Das, A. K. De Bruyn, i. De Lentdecker, G. Evard, H. Favart, L. Gianneios, P. Jaramillo, J. Khalilzadeh, A. Khan, F. A. Lee, K. Malara, A. Paredes, s. shahzad, M. A. thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Gokbulut, G. Hong, Y. Knolle, J. Lambrecht, L. Marckx, D. Mota Amarilo, K. skovpen, K. Van Den Bossche, N. van der Linden, J. Wezenbeek, L. Benecke, A. Bethani, A. Bruno, G. Caputo, C. De Favereau De Jeneret, J. Delaere, C. Donertas, i. s. Giammanco, A. Guzel, A. O. Jain, sa. Lemaitre, V. Lidrych, J. Mastrapasqua, P. tran, t. t. Alves, G. A. Coelho, E. Correia silva, G. Hensel, C. Menezes De Oliveira, t. Mora Herrera, C. Rebello teles, P. soeiro, M. Vilela Pereira, A. Aldá Júnior, W. L. Barroso Ferreira Filho, M. Brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, E. M. Da silveira, G. G. De Jesus Damiao, D. Fonseca De souza, s. Gomes De souza, R. Laux Kuhn, t. Macedo, M. Martins, J. Mundim, L. Nogima, H. Pinheiro, J. P. santoro, A. sznajder, A. thiel, M. Bernardes, C. A. Calligaris, L. Fernandez Perez tomei, t. R. Gregores, E. M. Maietto silverio, i. Mercadante, P. G. Novaes, s. F. Orzari, B. Padula, sandra s. Aleksandrov, A. Antchev, G. Hadjiiska, R. iaydjiev, P. Misheva, M. shopova, M. sultanov, G. Dimitrov, A. Litov, L. Pavlov, B. Petkov, P. Petrov, A. shumka, E. Keshri, s. Laroze, D. thakur, s. Cheng, t. Javaid, t. Yuan, L. Hu, Z. Liang, Z. Liu, J. Chen, G. M. Chen, H. s. Chen, M. iemmi, F. Jiang, C. H. Kapoor, A. Liao, H. Liu, Z.-A. sharma, R. song, Yerevan Physics Institute Yerevan Armenia Yerevan State University Yerevan Armenia Institut für Hochenergiephysik Vienna Austria TU Wien Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Ghent University Ghent Belgium Université Libre de Bruxelles Bruxelles Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual de Campinas Campinas Brazil Federal University of Rio Grande do Sul Porto Alegre Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China University of Chinese Academy of Sciences Beijing China China Center of Advanced Science and Technology Beijing China China Spallation Neutron Source Guangdong China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Guangdong Provincial Key Laboratory of Nuclear Science and Guangdong-Hong Kong Joint Laboratory of Quantum Matter South China Normal University Guangzhou China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Nanjing Normal University Nanjing China Henan Normal University Xinxiang China University of Shanghai for Science and Technology Shanghai China The University of Iowa Iowa City U.S.A. Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) — Fudan University Shanghai China Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University

A search for high-mass resonances decaying into a gluon, g, and two W bosons is presented. A Kaluza-Klein gluon, gKK, decaying in cascade via a scalar radion R, gKK → gR → gWW, is considered. the final state studied consists of three large-radius jets, two of which contain the products of hadronically decaying W bosons, and the third one the hadronization products of the gluon. the analysis is performed using proton-proton collision data at $$ \sqrt{s} $$ = 13 teV collected by the CMS experiment at the CERN LHC during 2016–2018, corresponding to an integrated luminosity of 138 fb−1. the masses of the gKK and R candidates are reconstructed as trijet and dijet masses, respectively. these are used for event categorization and signal extraction. No excess of data events above the standard model background expectation is observed. Upper limits are set on the product of the gKK production cross section and its branching fraction via a radion R to gWW. this is the first analysis examining the resonant WW+jet signature and setting limits on the two resonance masses in an extended warped extra-dimensional model.

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self-assembly and entropic effects in pear-shaped colloid systems: i. shape sensitivity of bilayer phases in colloidal pear-shaped particle systems

arXiv

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arXiv 2020年

作者： schönhöfer, Philipp W.A. Marechal, Matthieu Cleaver, Douglas J. schröder-turk, Gerd E. College of Science Health Engineering and Education Mathematics and Statistics Murdoch University 90 South Street MurdochWA6150 Australia Institut für Theoretische Physik I Friedrich-Alexander-Universität Erlangen-Nürnberg Staudtstraße 7 Erlangen91058 Germany Materials and Engineering Research Institute Sheffield Hallam University SheffieldS1 1WB United Kingdom College of Science Health Engineering and Education Mathematics and Statistics Murdoch University 90 South Street MurdochWA6150 Australia Department of Applied Mathematics Research School of Physical Sciences and Engineering Australian National University CanberraACT0200 Australia Department of Food Science University of Copenhagen Rolighedsvej 26 Frederiksberg C1958 Denmark Physical Chemistry Center for Chemistry and Chemical Engineering Lund University Lund22100 Sweden

the role of particle shape in self-assembly processes is a double-edged sword. On the one hand, particle shape and particle elongation are often considered the most fundamental determinants of soft matter structure formation. On the other hand, structure formation is often highly sensitive to details of shape. Here we address the question of particle shape sensitivity for the self-assembly of hard pear-shaped particles, by studying two models for this system: a) the pear hard Gaussian overlap (PHGO) and b) hard pears of revolution (HPR) model. Hard pear-shaped particles, given by the PHGO model, are known to form a bicontinuous gyroid phase spontaneously. However, this model does not replicate an additive object perfectly and, hence, varies slightly in shape from a"true" pear-shape. therefore, we investigate in the first part of this series the stability of the gyroid phase in pear-shaped particle systems. We show based on the HPR phase diagram that the gyroid phase does not form in pears with such"true" hard pear-shaped potential. Moreover, we acquire first indications from the HPR and PHGO pair-correlation functions that the formation of the gyroid is probably attributed to the small non-additive properties of the PHGO potential. Copyright © 2020, the Authors. All rights reserved.

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self-assembly and entropic effects in pear-shaped colloid systems: ii. Depletion attraction of pear-shaped particles in a hard sphere solvent

arXiv

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arXiv 2020年

We consider depletion effects of a pear-shaped colloidal particle in a hard-sphere solvent, for two different model realisations of the pear-shaped colloidal particle. the two models are the pear hard Gaussian overlap (PHGO) particles and the hard pears of revolution (HPR). the motivation for this study is to provide a microscopic understanding for the substantially different mesoscopic self-assembly properties of these pear-shaped colloids, in dense suspensions, that have been reported in the first part of this series. this is done by determining the differing depletion attraction via MC simulations of PHGO and HPR particles in a pool of a hard spherical solvent and comparing them with excluded volume calculations of numerically obtained ideal configurations on the microscopic level. While the HPR model behaves as predicted by the analysis of excluded volumes, the PHGO model showcases a preference for splay between neighbouring particles, which can be attributed to the special non-additive characteristics of the PHGO contact function. Lastly, we propose a potentially experimentally realisable pear-shaped particle model, the non-additive hard pear of revolution (NAHPR) model, which is based on the HPR model but also features non-additive traits similar to those of PHGO particles to mimic their depletion behaviour. Copyright © 2020, the Authors. All rights reserved.

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