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arXiv 2022年

作者： statler, thomas s. Raducan, sabina D. Barnouin, Olivier s. DeCoster, Mallory E. Chesley, steven R. Barbee, Brent Agrusa, Harrison F. Cambioni, saverio Cheng, Andrew F. Dotto, Elisabetta Eggl, siegfried Fahnestock, Eugene G. Ferrari, Fabio Graninger, Dawn Herique, Alain Herreros, isabel Hirabayashi, Masatoshi ivanovski, stavro Jutzi, Martin Karatekin, Özgür Lucchetti, Alice Luther, Robert Makadia, Rahil Marzari, Francesco Michel, Patrick Murdoch, Naomi Nakano, Ryota Ormö, Jens Pajola, Maurizio Rivkin, Andrew s. Rossi, Alessandro sánchez, Paul schwartz, stephen R. soldini, stefania souami, Damya stickle, Angela tortora, Paolo trigo-Rodríguez, Josep M. Venditti, Flaviane Vincent, Jean-Baptiste Wünnemann, Kai Planetary Defense Coordination Office and Planetary Science Division NASA Headquarters 300 Hidden Figures Way SW WashingtonDC20546 United States Space Research and Planetary Sciences Physics Institute University of Bern Bern3012 Switzerland Johns Hopkins University Applied Physics Laboratory LaurelMD20723 United States Jet Propulsion Laboratory California Institute of Technology PasadenaCA91109 United States NASA Goddard Space Flight Center GreenbeltMD20771 United States Department of Astronomy University of Maryland College ParkMD20742 United States Department of Earth Atmospheric & Planetary Sciences Massachusetts Institute of Technology CambridgeMA United States INAF-Osservatorio Astronomico di Roma RomeI-00078 Italy Department of Aerospace Engineering University of Illinois at Urbana-Champaign UrbanaIL61801 United States Univ. Grenoble Alpes CNRS CNES IPAG Grenoble38000 France Centro de Astrobiología CSIC-INTA Instituto Nacional de Técnica Aeroespacial Torrejón de Ardoz28850 Spain Department of Geosciences Auburn University AuburnAL36849 United States Department of Aerospace Engineering Auburn University AuburnAL36849 United States INAF- Osservatorio Astronomico di Trieste Trieste34143 Italy Royal Observatory of Belgium Belgium INAF-Astronomical Observatory of Padova Padova35122 Italy Museum für Naturkunde Leibniz Institute for Evolution and Biodiversity Science Germany University of Padova Padova Italy Université Côte d’Azur Observatoire de la Côte d’Azur CNRS Laboratoire Lagrange Nice06304 France Université de Toulouse Toulouse France IFAC-CNR Sesto Fiorentino50019 Italy Colorado Center for Astrodynamics Research University of Colorado Boulder BoulderCO80303 United States Planetary Science Institute TucsonAZ85719 United States Department of Mechanical Materials and Aerospace Engineering University of Liverpool Liverpool United Kingdom ForlìI-47121 Italy Cerdanyola del Vallès Barcelona Catalonia08193

NAsA’s Double Asteroid Redirection test (DARt) is the first full-scale test of an asteroid deflection technology. Results from the hypervelocity kinetic impact and Earth-based observations, coupled with LiCiACube and the later Hera mission, will result in measurement of the momentum transfer efficiency accurate to ~10% and characterization of the Didymos binary system. But DARt is a single experiment;how could these results be used in a future planetary defense necessity involving a different asteroid? We examine what aspects of Dimorphos’s response to kinetic impact will be constrained by DARt results;how these constraints will help refine knowledge of the physical properties of asteroidal materials and predictive power of impact simulations;what information about a potential Earth impactor could be acquired before a deflection effort;and how design of a deflection mission should be informed by this understanding. We generalize the momentum enhancement factor β, showing that a particular direction-specific β will be directly determined by the DARt results, and that a related direction-specific β is a figure of merit for a kinetic impact mission. the DARt β determination constrains the ejecta momentum vector, which, with hydrodynamic simulations, constrains the physical properties of Dimorphos’s near-surface. in a hypothetical planetary defense exigency, extrapolating these constraints to a newly discovered asteroid will require Earth-based observations and benefit from in-situ reconnaissance. We show representative predictions for momentum transfer based on different levels of reconnaissance and discuss strategic targeting to optimize the deflection and reduce the risk of a counterproductive deflection in the wrong direction. © 2022, CC BY-NC-ND.

关键词： Kinetics

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Revealing the Bonding Nature and Electronic structure of Early-transition-Metal Dihydrides

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PRX Energy 2024年第1期3卷 013003-013003页

作者： Curran Kalha Laura E. Ratcliff Giorgio Colombi Christoph schlueter Bernard Dam Andrei Gloskovskii tien-Lin Lee Pardeep K. thakur Prajna Bhatt Yujiang Zhu Jürg Osterwalder Francesco Offi Giancarlo Panaccione Anna Regoutz Department of Chemistry University College London (UCL) 20 Gordon Street London WC1H 0AJ United Kingdom Centre for Computational Chemistry School of Chemistry University of Bristol Bristol BS8 1TS United Kingdom Materials for Energy Conversion and Storage Department of Chemical Engineering Delft University of Technology Delft NL-2629HZ The Netherlands Deutsches Elektronen-Synchrotron (DESY) Notkestraße 85 Hamburg 22607 Germany Diamond Light Source Ltd. Diamond House Harwell Science and Innovation Campus Didcot OX11 0DE United Kingdom Physik-Institut Universität Zürich Zürich CH-8057 Switzerland Dipartimento di Scienze Università di Roma Tre Rome 00146 Italy Istituto Officina dei Materiali (IOM)-CNR Laboratorio TASC in Area Science Park S.S.14 Km 163.5 Trieste I-34149 Italy

Metal hydrides are potential candidates for applications in hydrogen-related technologies, such as energy storage, hydrogen compression, and hydrogen sensing, to name just a few. However, understanding the electronic structure and chemical environment of hydrogen within them remains a key challenge. this work presents a new analytical pathway to explore these aspects in technologically relevant systems using hard x-ray photoelectron spectroscopy (HAXPEs) on thin films of two prototypical metal dihydrides: YH2−δ and tiH2−δ. By taking advantage of the tunability of synchrotron radiation, a nondestructive depth profile of the chemical states is obtained using core-level spectra. Combining experimental valence-band (VB) spectra collected at varying photon energies with theoretical insights from density functional theory (DFt) calculations, a description of the bonding nature and the role of d versus sp contributions to states near the Fermi energy are provided. Moreover, a reliable determination of the enthalpy of formation is proposed by using experimental values of the energy position of metal s-band features close to the Fermi energy in the HAXPEs VB spectra.

关键词： Hydrogen storage Hydrides synchrotron radiation facilities Density functional theory Hard x-ray photoelectron spectroscopy X-ray photoelectron spectroscopy

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A Review and Analysis of Mobile Health Applications for Alzheimer Patients and Caregivers

A Review and Analysis of Mobile Health Applications for Alzh...

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international Conference on Parallel Distributed and Grid Computing (PDGC)

作者： Gaurav Gupta Ankit Gupta Varun Jaiswal Mohd Dilshad Ansari School of Electrical and Computer Engineering Shoolini University Solan H. P. India Dept. of Computer Science & Engineering CMR College of Engineering & Technology Hyderabad T.S. India

ISBN: (纸本)9781728106489

Alzheimer, a common form of dementia causes deterioration of cognitive abilities of an individual which results in difficulty in carrying out their routine activities. Research suggests that there is no cure for this deadly disease. However, the progression of the disease can be slowed down by improving the patient's quality of life, providing a solution for enhancing the cognitive abilities of the patient. One of the possible solution is to motivate the use of smartphone by the patient. smartphones play a crucial role for the family members of the Alzheimer patients as it helps the patients in carrying out their routine activities by providing time to time notifications about them. Furthermore, the smartphone also helps in assisting the caregiver to take proper care of the patient, such as retrieving the GPs locations of the patient, using Geotagging. Photographs can be used as a source of the medium in helping patients remember their family members. they are susceptible to music; therefore, the patient brain can be stimulated by playing their beloved tones. smartphones tend to be a one-stop shop for providing all these facilities to the patients. this motivates the need to build relatively simple cross-platform mobile applications with interactive GUis so as to enhance their cognitive abilities.

关键词： Alzheimer's disease Mobile applications Games Feature extraction Conferences

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the CMs statistical Analysis and Combination tool: Combine

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Computing and software for Big science 2024年第1期8卷 1-45页

作者： Zhokin, A. Zhizhin, i. Zarubin, A. Yuldashev, B.s. Voytishin, N. Vorotnikov, G. Vorobyev, A. Volkov, P. Uzunian, A. Uvarov, L. toropin, A. tlisova, i. teryaev, O. terkulov, A. tcherniaev, E. sulimov, V. sosnov, D. smirnov, V. slabospitskii, s. skovpen, Y. shulha, s. shmatov, s. shalaev, V. savrin, V. savina, M. Radchenko, O. Popov, V. Polikarpov, s. Perfilov, M. Perelygin, V. Palichik, V. Oreshkin, V. Obraztsov, s. Nikitenko, A. Murzin, V. Matveev, V. Malakhov, A. Makarenko, V. Lychkovskaya, N. Levchenko, P. Lanev, A. Krasnikov, N. Kozyrev, A. Korenkov, V. Konstantinov, D. Kodolova, O. Klyukhin, V. Kirsanov, M. Kirpichnikov, D. Kirakosyan, M. Kim, V. Karneyeu, A. Karjavine, V. Kachanov, V. ivanov, Y. Gribushin, A. Gorbunov, i. Golutvin, i. Golubev, N. Golovtcov, V. Gninenko, s. Gavrilov, V. Gavrilov, G. Dudko, L. Dubinin, M. Druzhkin, D. Dimova, t. Dermenev, A. Chistov, R. Chekhovsky, V. Chadeeva, M. Bunichev, V. Budkouski, D. Borshch, V. Boos, E. Blinov, V. Babaev, A. Azarkin, M. Aushev, t. Andreev, Yu. Andreev, V. Alexakhin, V. Afanasiev, s. Warden, A. Vetens, W. tsoi, H.F. teague, D. smith, W.H. sharma, V. shang, V. savin, A. Pinna, D. Pétré, L. Parida, G. Mondal, s. Mohammadi, A. Mallampalli, A. sreekala, J. Madhusudanan Loveless, R. Lanaro, A. Koraka, C.K. Herve, A. Herndon, M. He, H. Galloni, C. Everaerts, P. De Bruyn, i. Dasu, s. Bose, t. Black, K. Banerjee, s. Aravind, A. Karchin, P.E. Bhattacharya, s. Neu, C. Ledovskoy, A. Hirosky, R. Hakala, J. Cox, B. Cardwell, B. Viinikainen, J. Velkovska, J. tuo, s. sheldon, P. Romeo, F. Melo, A. Elayavalli, R. Kunnawalkam Johns, W. Gurrola, A. Greene, s. Chen, Y. Appelt, E. Volobouev, i. Peltola, t. Mankel, A. Lee, s.W. Lamichhane, K. Kazhykarim, Y. Hussain, A. Hegde, V. Gogate, N. Damgov, J. Akchurin, N. safonov, A. Rathjens, D. Overton, D. Mueller, R. Luo, s. Kim, H. Kamon, t. Huang, t. Gilmore, J. Eusebi, R. Bouhali, O. Akhter, t. Ahmad, M. Aebi, D. spanier, s. Nibigira, E. Lee, L. Karunarathna, N. Kanuganti, A.R. Holmes, t. Higginbotham, s. Fiorendi, s. Delannoy Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent 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 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 Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing 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 Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) Institute of Modern Physics Fudan University Shanghai China Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Venezuela Universidad de Antioquia Medellin Colombia Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture University of Split Split Croatia Faculty of Science University of Split Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Universidad San Francisco de Quito Quito Ecuador Egyptian Network of High Energy Physics Academy of Scientific Research and Technology of the Arab Republic of Egypt Cairo Egypt Center for High

this paper describes the Combine software package used for statistical analyses by the CMs Collaboration. the package, originally designed to perform searches for a Higgs boson and the combined analysis of those searches, has evolved to become the statistical analysis tool presently used in the majority of measurements and searches performed by the CMs Collaboration. it is not specific to the CMs experiment, and this paper is intended to serve as a reference for users outside of the CMs Collaboration, providing an outline of the most salient features and capabilities. Readers are provided with the possibility to run Combine and reproduce examples provided in this paper using a publicly available container image. since the package is constantly evolving to meet the demands of ever-increasing data sets and analysis sophistication, this paper cannot cover all details of Combine. However, the online documentation referenced within this paper provides an up-to-date and complete user guide. © CERN, for the benefit of the CMs Collaboration 2024.

关键词： CMs Combine Higgs Higgs boson statistics

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search for W′ bosons decaying to a top and a bottom quark in leptonic final states in proton-proton collisions at s = 13 teV

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Journal of High Energy Physics 2024年第5期2024卷 46页

作者： Hayrapetyan, A. tumasyan, A. Adam, W. Andrejkovic, J.W. Bergauer, t. Chatterjee, s. Damanakis, K. Dragicevic, M. Escalante Del Valle, A. Hussain, P.s. Jeitler, M. Krammer, N. Liko, D. Mikulec, i. schieck, J. schöfbeck, R. schwarz, D. sonawane, M. templ, s. Waltenberger, W. Wulz, C.-E. Darwish, M.R. Janssen, t. Van Mechelen, P. Bols, E.s. D’hondt, J. Dansana, s. De Moor, A. Delcourt, M. El Faham, H. Lowette, s. Makarenko, i. Müller, D. sahasransu, A.R. tavernier, s. tytgat, M. Van Putte, s. Vannerom, D. Clerbaux, B. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Khalilzadeh, A. Lee, K. Mahdavikhorrami, M. Malara, A. Paredes, s. Pétré, L. Postiau, N. thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Hong, Y. Knolle, J. Lambrecht, L. Mestdach, G. Rendón, C. samalan, A. skovpen, K. Van Den Bossche, N. Wezenbeek, L. Benecke, A. Bruno, G. Caputo, C. Delaere, C. Donertas, i.s. Giammanco, A. Jaffel, K. Jain, sa. Lemaitre, V. Lidrych, J. Mastrapasqua, P. Mondal, K. tran, t.t. Wertz, s. Alves, G.A. Coelho, E. Hensel, C. Menezes De Oliveira, t. Moraes, A. Rebello teles, P. soeiro, M. Aldá Júnior, W.L. Alves Gallo Pereira, M. 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. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. santoro, A. silva Do Amaral, s.M. sznajder, A. thiel, M. Vilela Pereira, A. Bernardes, C.A. Calligaris, L. Fernandez Perez tomei, t.R. Gregores, E.M. 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. ivanov, t. Litov, L. Pavlov, B. Petkov, P. Petrov, A. shumka, E. Keshri, s. thakur, s. Cheng, t. Guo, Q. Javaid, t. Mittal, M. Yuan, L. Bauer, G. Hu, Z. Yi, K. Chen, G.M. Chen, H.s. Chen, M. iemmi, F. Jiang, C.H. Kapoor, A. Liao, H. Liu, Z.-A. Monti, F. sharma, R. song, J.N. tao, J. Wang, C. Wang, J. Wang, Z. Zhang, H. Agapitos, A. Ban, Y. Lev Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent 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 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 Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) — Fudan University Shanghai China Zhejiang University Zhejiang Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Physics (CHEP-FU) Fayoum University El-Fayoum Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics

A search for W′ bosons decaying to a top and a bottom quark in final states including an electron or a muon is performed with the CMs detector at the LHC. the analyzed data correspond to an integrated luminosity of 138 fb−1sup> of proton-proton collisions at a center-of-mass energy of 13 teV. Good agreement with the standard model expectation is observed and no evidence for the existence of the W′ boson is found over the mass range examined. the largest observed deviation from the standard model expectation is found for a W′ boson mass (mW′sub>) hypothesis of 3.8 teV with a relative decay width of 1%, with a local (global) significance of 2.6 (2.0) standard deviations. Upper limits on the production cross sections of W′ bosons decaying to a top and a bottom quark are set. Left- and right-handed W′ bosons with mW′sub> below 3.9 and 4.3 teV, respectively, are excluded at the 95% confidence level, under the assumption that the new particle has a narrow decay width. Limits are also set for relative decay wi.t.s up to 30%. © the Author(s) 2024.

关键词： Beyond standard Model Hadron-Hadron scattering Vector Boson Production

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Measurement of the τ lepton polarization in Z boson decays in proton-proton collisions at (Formula presented.)

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Journal of High Energy Physics 2024年第1期2024卷 101页

作者： Hayrapetyan, A. tumasyan, A. Adam, W. Andrejkovic, J.W. Bergauer, t. Chatterjee, s. Damanakis, K. Dragicevic, M. Escalante Del Valle, A. Hussain, P.s. Jeitler, M. Krammer, N. Liko, D. Mikulec, i. schieck, J. schöfbeck, R. schwarz, D. sonawane, M. templ, s. Waltenberger, W. Wulz, C.-E. Darwish, M.R. Janssen, t. Van Mechelen, P. Bols, E.s. D’Hondt, J. Dansana, s. De Moor, A. Delcourt, M. El Faham, H. Lowette, s. Makarenko, i. Müller, D. sahasransu, A.R. tavernier, s. tytgat, M. Van Putte, s. Vannerom, D. Clerbaux, B. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Khalilzadeh, A. Lee, K. Mahdavikhorrami, M. Malara, A. Paredes, s. Pétré, L. Postiau, N. thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Hong, Y. Knolle, J. Lambrecht, L. Mestdach, G. Rendón, C. samalan, A. skovpen, K. Van Den Bossche, N. Wezenbeek, L. Benecke, A. Bruno, G. Caputo, C. Delaere, C. Donertas, i.s. Giammanco, A. Jaffel, K. Jain, sa. Lemaitre, V. Lidrych, J. Mastrapasqua, P. Mondal, K. tran, t.t. Wertz, s. Alves, G.A. Coelho, E. Hensel, C. Menezes De Oliveira, t. Moraes, A. Rebello teles, P. soeiro, M. Aldá Júnior, W.L. Alves Gallo Pereira, M. 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. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. santoro, A. silva Do Amaral, s.M. sznajder, A. thiel, M. Vilela Pereira, A. Bernardes, C.A. Calligaris, L. Fernandez Perez tomei, t.R. Gregores, E.M. 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. ivanov, t. Litov, L. Pavlov, B. Petkov, P. Petrov, A. shumka, E. Keshri, s. thakur, s. Cheng, t. Guo, Q. Javaid, t. Mittal, M. Yuan, L. Bauer, G. Hu, Z. Yi, K. Chen, G.M. Chen, H.s. Chen, M. iemmi, F. Jiang, C.H. Kapoor, A. Liao, H. Liu, Z.-A. Monti, F. sharma, R. song, J.N. tao, J. Wang, C. Wang, J. Wang, Z. Zhang, H. Agapitos, A. Ban, Y. Lev Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent 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 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 Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) — Fudan University Shanghai China Zhejiang University Zhejiang Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Physics (CHEP-FU) Fayoum University El-Fayoum Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics

the polarization of τ leptons is measured using leptonic and hadronic τ lepton decays in Z → τ+ τ− events in proton-proton collisions at (Formula presented.) recorded by CMs at the CERN LHC with an integrated lum... 详细信息

the polarization of τ leptons is measured using leptonic and hadronic τ lepton decays in Z → τ+sup> τ−sup> events in proton-proton collisions at (Formula presented.) recorded by CMs at the CERN LHC with an integrated luminosity of 36.3 fb−1sup>. the measured τ−sup> lepton polarization at the Z boson mass pole is Pτsub>(Z) = −0.144 ± 0.006 (stat) ± 0.014 (syst) = −0.144 ± 0.015, in good agreement with the measurement of the τ lepton asymmetry parameter of Aτsub> = 0.1439 ± 0.0043 = − Pτsub>(Z) at LEP. the τ lepton polarization depends on the ratio of the vector to axial-vector couplings of the τ leptons in the neutral current expression, and thus on the effective weak mixing angle sin2sup> θWeff , independently of the Z boson production mechanism. the obtained value sin2sup> θWeff = 0.2319 ± 0.0008(stat) ± 0.0018(syst) = 0.2319 ± 0.0019 is in good agreement with measurements at e+sup> e−sup> colliders. [Figure not available: see fulltext.]. © 2024, the Author(s).

关键词： Hadron-Hadron scattering tau Physics

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search for continuous gravitational waves from 20 accreting millisecond x-ray pulsars in O3 LiGO data

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Physical Review D 2022年第2期105卷 022002-022002页

作者： R. Abbott t. D. Abbott F. Acernese K. Ackley C. Adams N. Adhikari R. X. Adhikari V. B. Adya C. Affeldt D. Agarwal M. Agathos K. Agatsuma N. Aggarwal O. D. Aguiar L. Aiello A. Ain t. Akutsu s. Albanesi A. Allocca P. A. Altin A. Amato C. Anand s. Anand A. Ananyeva s. B. Anderson W. G. Anderson M. Ando t. Andrade N. Andres t. Andrić s. V. Angelova s. Ansoldi J. M. Antelis s. Antier s. Appert Koji Arai Koya Arai Y. Arai s. Araki A. Araya M. C. Araya J. s. Areeda M. Arène N. Aritomi N. Arnaud s. M. Aronson K. G. Arun H. Asada Y. Asali G. Ashton Y. Aso M. Assiduo s. M. Aston P. Astone F. Aubin C. Austin s. Babak F. Badaracco M. K. M. Bader C. Badger s. Bae Y. Bae A. M. Baer s. Bagnasco Y. Bai L. Baiotti J. Baird R. Bajpai M. Ball G. Ballardin s. W. Ballmer A. Balsamo G. Baltus s. Banagiri D. Bankar J. C. Barayoga C. Barbieri B. C. Barish D. Barker P. Barneo F. Barone B. Barr L. Barsotti M. Barsuglia D. Barta J. Bartlett M. A. Barton i. Bartos R. Bassiri A. Basti M. Bawaj J. C. Bayley A. C. Baylor M. Bazzan B. Bécsy V. M. Bedakihale M. Bejger i. Belahcene V. Benedetto D. Beniwal t. F. Bennett J. D. Bentley M. BenYaala F. Bergamin B. K. Berger s. Bernuzzi D. Bersanetti A. Bertolini J. Betzwieser D. Beveridge R. Bhandare U. Bhardwaj D. Bhattacharjee s. Bhaumik i. A. Bilenko G. Billingsley s. Bini R. Birney O. Birnholtz s. Biscans M. Bischi s. Biscoveanu A. Bisht B. Biswas M. Bitossi M.-A. Bizouard J. K. Blackburn C. D. Blair D. G. Blair R. M. Blair F. Bobba N. Bode M. Boer G. Bogaert M. Boldrini L. D. Bonavena F. Bondu E. Bonilla R. Bonnand P. Booker B. A. Boom R. Bork V. Boschi N. Bose s. Bose V. Bossilkov V. Boudart Y. Bouffanais A. Bozzi C. Bradaschia P. R. Brady A. Bramley A. Branch M. Branchesi J. E. Brau M. Breschi t. Briant J. H. Briggs A. Brillet M. Brinkmann P. Brockill A. F. Brooks J. Brooks D. D. Brown s. Brunett G. Bruno R. Bruntz J. Bryant t. Bulik H. J. Bulten A. Buonanno R. Buscicchio D. Buskulic C. Buy R. L. Byer L. Cadonati G. Cagnoli C. Cahillane J. Calderón Bustillo J. D. Callaghan t. A. Callister E. Ca LIGO Laboratory California Institute of Technology Pasadena California 91125 USA Louisiana State University Baton Rouge Louisiana 70803 USA Dipartimento di Farmacia Università di Salerno I-84084 Fisciano Salerno Italy INFN Sezione di Napoli Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy OzGrav School of Physics & Astronomy Monash University Clayton 3800 Victoria Australia LIGO Livingston Observatory Livingston Louisiana 70754 USA University of Wisconsin-Milwaukee Milwaukee Wisconsin 53201 USA OzGrav Australian National University Canberra Australian Capital Territory 0200 Australia Max Planck Institute for Gravitational Physics (Albert Einstein Institute) D-30167 Hannover Germany Leibniz Universität Hannover D-30167 Hannover Germany Inter-University Centre for Astronomy and Astrophysics Pune 411007 India University of Cambridge Cambridge CB2 1TN United Kingdom Theoretisch-Physikalisches Institut Friedrich-Schiller-Universität Jena D-07743 Jena Germany University of Birmingham Birmingham B15 2TT United Kingdom Center for Interdisciplinary Exploration & Research in Astrophysics (CIERA) Northwestern University Evanston Illinois 60208 USA Instituto Nacional de Pesquisas Espaciais 12227-010 São José dos Campos São Paulo Brazil Gravity Exploration Institute Cardiff University Cardiff CF24 3AA United Kingdom INFN Sezione di Pisa I-56127 Pisa Italy Gravitational Wave Science Project National Astronomical Observatory of Japan (NAOJ) Mitaka City Tokyo 181-8588 Japan Advanced Technology Center National Astronomical Observatory of Japan (NAOJ) Mitaka City Tokyo 181-8588 Japan INFN Sezione di Torino I-10125 Torino Italy Università di Napoli “Federico II” Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy Université de Lyon Université Claude Bernard Lyon 1 CNRS Institut Lumière Matière F-69622 Villeurbanne France Department of Physics The University of Tokyo Bunkyo-ku Tokyo 113-0033 Japan Research Center for the Early Un

Results are presented of searches for continuous gravitational waves from 20 accreting millisecond x-ray pulsars with accurately measured spin frequencies and orbital parameters, using data from the third observing run of the Advanced LiGO and Advanced Virgo detectors. the search algorithm uses a hidden Markov model, where the transition probabilities allow the frequency to wander according to an unbiased random walk, while the J-statistic maximum-likelihood matched filter tracks the binary orbital phase. three narrow subbands are searched for each target, centered on harmonics of the measured spin frequency. the search yields 16 candidates, consistent with a false alarm probability of 30% per subband and target searched. these candidates, along with one candidate from an additional target-of-opportunity search done for sAX J1808.4−3658, which was in outburst during one month of the observing run, cannot be confidently associated with a known noise source. Additional follow-up does not provide convincing evidence that any are a true astrophysical signal. When all candidates are assumed nonastrophysical, upper limits are set on the maximum wave strain detectable at 95% confidence, h095%. the stri.t.st constraint is h095%=4.7×10−26 from iGR J17062−6143. Constraints on the detectable wave strain from each target lead to constraints on neutron star ellipticity and r-mode amplitude, the stri.t.st of which are ε95%=3.1×10−7 and α95%=1.8×10−5 respectively. this analysis is the most comprehensive and sensitive search of continuous gravitational waves from accreting millisecond x-ray pulsars to date.

关键词： Gravitational waves Binary stars Neutron stars & pulsars

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GrailQuest & HERMEs: Hunting for gravitational wave electromagnetic counterparts and probing space-time quantum foam

GrailQuest & HERMES: Hunting for gravitational wave electrom...

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space telescopes and instrumentation 2020: Ultraviolet to Gamma Ray

作者： Burderi, L. Di salvo, t. sanna, A. Fiore, F. Riggio, A. Gambino, A.F. Amarilli, F. Amati, L. Ambrosino, F. Amelino-Camelia, G. Anitra, A. Barbera, M. Bechini, M. Bellutti, P. Bertacin, R. Bertuccio, G. Campana, R. Cao, J. Capozziello, s. Ceraudo, F. Chen, t. Cinelli, M. Citossi, M. Clerici, A. Colagrossi, A. Costa, E. Curzel, s. De Laurentis, M. Della Casa, G. Demenev, E. Del santo, M. Della Valle, M. Dilillo, G. Efremov, P. Evangelista, Y. Feroci, M. Feruglio, C. Ferrandi, F. Fiorini, M. Fiorito, M. Frontera, F. Fuschino, F. Gacnik, D. Galgóczi, G. Gao, N. Gandola, M. Ghirlanda, G. Gomboc, A. Grassi, M. Guidorzi, C. Guzman, A. iaria, R. Karlica, M. Kostic, U. Labanti, C. La Rosa, G. Lo Cicero, U. Lopez Fernandez, B. Lunghi, P. Malcovati, P. Maselli, A. Manca, A. Mele, F. Milánkovich, D. Monge, A. Morgante, G. Nava, L. Negri, B. Nogara, P. Ohno, M. Ottolina, D. Pasquale, A. Pal, A. Perri, M. Piccinin, M. Piazzolla, R. Pirrotta, s. Pliego-Caballero, s. Prinetto, J. Pucacco, G. Puccetti, s. Rapisarda, M. Rashevskaya, i. Rashevski, A. Ripa, J. Russo, F. Papitto, A. Piranomonte, s. santangelo, A. scala, F. sciarrone, G. selcan, D. silvestrini, s. sottile, G. Rapisarda, M. Rotovnik, t. tenzer, C. troisi, i. Vacchi, A. Virgilli, E. Werner, N. Wang, L. Xu, Y. Zampa, G. Zampa, N. Zane, s. Zanotti, G. Dipartimento di Fisica Universit`a degli Studi di Cagliari SP Monserrato-Sestu km 0.7 MonserratoI-09042 Italy Dipartimento di Fisica e Chimica Universit`a degli Studi di Palermo via Archirafi 36 PalermoI-90123 Italy INAF-OATS Via G.B. Tiepolo 11 TriesteI-34143 Italy Politecnico di Milano Via La Masa 34 Milano20156 Italy Agenzia Spaziale Italiana via del Politecnico snc Roma00133 Italy INAF-IAPS Rome Via del Fosso del Cavaliere 100 I-00133 Italy INAF-OAS Bologna Via Gobetti 101 BolognaI-40129 Italy DEIMOS Spain Fondazione Politecnico di Milano Piazza Leonardo da Vinci 32 Milano20133 Italy Dipartimento di Fisica Ettore Pancini Universit`a di Napoli 'Federico II' NapoliI-80126 Italy INFN Sezione di Napoli Complesso Univ. Monte S. Angelo NapoliI-80126 Italy Fondazione Bruno Kessler - FBK Via Sommarive 18 TrentoI-38123 Italy of Politecnico di Milano Como Campus Via Anzani 42 Como22100 Italy Institute of High Energy Physics Chinese Academy of Sciences China Dipartimento di Matematica Universit`a di Roma Tor Vergata Universit`a degli Studi di Udine Via delle Scienze 206 Udine33100 Italy Aalta Lab Slovenia INAF-IASF Palermo Via U. La Malfa 153 PalermoI-90146 Italy University of Nova Gorica Slovenia INAF-IASF Milano Via Bassini 15 MilanoI-20100 Italy Skylabs Slovenia INAF-OAB Via E. Bianchi 46 MerateI-23807 Italy University of Pavia Department of Electrical Computer and Biomedical Engineering Via Ferrata 5 PaviaI-27100 Italy IAAT University of Tuebingen Sand 1 Tuebingen72076 Germany C3S Hungary ELTE - Eötövs Loránd University Hungary Konkoly Observatory Hungary INAF - Osservatorio Astronomico di Roma via Frascati 33 Monteporzio CatoneI-00040 Italy - ASI via del Politecnico s.n.c. RomaI-00133 Italy TIFPA INFN Department of Theoretical Physics and Astrophysics Masaryk University Brno Czech Republic INFN Udine Via delle Scienze 206 UdineI-33100 Italy INFN sez. Trieste Padriciano 99 TriesteI-34127 Italy Dipartimento

ISBN: (纸本)9781510636750

GrailQuest (Gamma-ray Astronomy international Laboratory for Quantum Exploration of space-time) is an ambitious astrophysical mission concept that uses a fleet of small satellites whose main objective is to search for a dispersion law for light propagation in vacuo. Within Quantum Gravity theories, different models for space-time quantization predict relative discrepancies of the speed of photons w.r.t. the speed of light that depend on the ratio of the photon energy to the Planck energy. this ratio is as small as 10-23 for photons in the γ- ray band (100 keV). therefore, to detect this effect, light must propagate over enormous distances and the experiment must have extraordinary sensitivity. Gamma-Ray Bursts, occurring at cosmological distances, could be used to detect this tiny signature of space-time granularity. this can be obtained by coherently combine a huge number of small instruments distributed in space to act as a single detector of unprecedented effective area. this is the first example of high-energy distributed astronomy: a new concept of modular observatory of huge overall collecting area consisting in a fleet of small satellites in low orbits, with sub-microsecond time resolution and wide energy band (keV-MeV). the enormous number of collected photons will allow to effectively search these energy dependent delays. Moreover, GrailQuest will allow to perform temporal triangulation of impulsive events with arc-second positional accuracies: an extraordinary sensitive X-ray/Gamma all-sky monitor crucial for hunting the elusive electromagnetic counterparts of Gravitational Waves, that will play a paramount role in the future of Multi-messenger Astronomy. A pathfinder of GrailQuest is already under development through the HERMEs (High Energy Rapid Modular Ensemble of satellites) project: a fleet of six 3U cube-sats to be launched by the end of 2022. © 2020 sPiE.

关键词： Gravity waves

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search of the early O3 LiGO data for continuous gravitational waves from the Cassiopeia A and Vela Jr. supernova remnants

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Physical Review D 2022年第8期105卷 082005-082005页

作者： R. Abbott t. D. Abbott F. Acernese K. Ackley C. Adams N. Adhikari R. X. Adhikari V. B. Adya C. Affeldt D. Agarwal M. Agathos K. Agatsuma N. Aggarwal O. D. Aguiar L. Aiello A. Ain P. Ajith s. Albanesi A. Allocca P. A. Altin A. Amato C. Anand s. Anand A. Ananyeva s. B. Anderson W. G. Anderson t. Andrade N. Andres t. Andrić s. V. Angelova s. Ansoldi J. M. Antelis s. Antier s. Appert K. Arai M. C. Araya J. s. Areeda M. Arène N. Arnaud s. M. Aronson K. G. Arun Y. Asali G. Ashton M. Assiduo s. M. Aston P. Astone F. Aubin C. Austin s. Babak F. Badaracco M. K. M. Bader C. Badger s. Bae A. M. Baer s. Bagnasco Y. Bai J. Baird M. Ball G. Ballardin s. W. Ballmer A. Balsamo G. Baltus s. Banagiri D. Bankar J. C. Barayoga C. Barbieri B. C. Barish D. Barker P. Barneo F. Barone B. Barr L. Barsotti M. Barsuglia D. Barta J. Bartlett M. A. Barton i. Bartos R. Bassiri A. Basti M. Bawaj J. C. Bayley A. C. Baylor M. Bazzan B. Bécsy V. M. Bedakihale M. Bejger i. Belahcene V. Benedetto D. Beniwal t. F. Bennett J. D. Bentley M. BenYaala F. Bergamin B. K. Berger s. Bernuzzi D. Bersanetti A. Bertolini J. Betzwieser D. Beveridge R. Bhandare U. Bhardwaj D. Bhattacharjee s. Bhaumik i. A. Bilenko G. Billingsley s. Bini R. Birney O. Birnholtz s. Biscans M. Bischi s. Biscoveanu A. Bisht B. Biswas M. Bitossi M.-A. Bizouard J. K. Blackburn C. D. Blair D. G. Blair R. M. Blair F. Bobba N. Bode M. Boer G. Bogaert M. Boldrini L. D. Bonavena F. Bondu E. Bonilla R. Bonnand P. Booker B. A. Boom R. Bork V. Boschi N. Bose s. Bose V. Bossilkov V. Boudart Y. Bouffanais A. Bozzi C. Bradaschia P. R. Brady A. Bramley A. Branch M. Branchesi J. E. Brau M. Breschi t. Briant J. H. Briggs A. Brillet M. Brinkmann P. Brockill A. F. Brooks J. Brooks D. D. Brown s. Brunett G. Bruno R. Bruntz J. Bryant t. Bulik H. J. Bulten A. Buonanno R. Buscicchio D. Buskulic C. Buy R. L. Byer L. Cadonati G. Cagnoli C. Cahillane J. Calderón Bustillo J. D. Callaghan t. A. Callister E. Calloni J. Cameron J. B. Camp M. Canepa s. Canevarolo M. Cannavacciuolo K. C. Cannon H. Cao E. Capote G. LIGO Laboratory California Institute of Technology Pasadena California 91125 USA Louisiana State University Baton Rouge Louisiana 70803 USA Dipartimento di Farmacia Università di Salerno I-84084 Fisciano Salerno Italy INFN Sezione di Napoli Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy OzGrav School of Physics and Astronomy Monash University Clayton 3800 Victoria Australia LIGO Livingston Observatory Livingston Louisiana 70754 USA University of Wisconsin-Milwaukee Milwaukee Wisconsin 53201 USA OzGrav Australian National University Canberra Australian Capital Territory 0200 Australia Max Planck Institute for Gravitational Physics (Albert Einstein Institute) D-30167 Hannover Germany Leibniz Universität Hannover D-30167 Hannover Germany Inter-University Centre for Astronomy and Astrophysics Pune 411007 India University of Cambridge Cambridge CB2 1TN United Kingdom Theoretisch-Physikalisches Institut Friedrich-Schiller-Universität Jena D-07743 Jena Germany University of Birmingham Birmingham B15 2TT United Kingdom Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) Northwestern University Evanston Illinois 60208 USA Instituto Nacional de Pesquisas Espaciais 12227-010 São José dos Campos São Paulo Brazil Gravity Exploration Institute Cardiff University Cardiff CF24 3AA United Kingdom INFN Sezione di Pisa I-56127 Pisa Italy International Centre for Theoretical Sciences Tata Institute of Fundamental Research Bengaluru 560089 India INFN Sezione di Torino I-10125 Torino Italy Università di Napoli “Federico II” Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy Université de Lyon Université Claude Bernard Lyon 1 CNRS Institut Lumière Matière F-69622 Villeurbanne France Institut de Ciències del Cosmos (ICCUB) Universitat de Barcelona C/ Martí i Franquès 1 Barcelona 08028 Spain Laboratoire d’Annecy de Physique des Particules (LAPP) Université Grenoble Alpes Université Savoie Mont Blanc CNRS/IN

We present directed searches for continuous gravitational waves from the neutron stars in the Cassiopeia A (Cas A) and Vela Jr. supernova remnants. We carry out the searches in the LiGO detector data from the first six months of the third Advanced LiGO and Virgo observing run using the weave semicoherent method, which sums matched-filter detection-statistic values over many time segments spanning the observation period. No gravitational wave signal is detected in the search band of 20–976 Hz for assumed source ages greater than 300 years for Cas A and greater than 700 years for Vela Jr. Estimates from simulated continuous wave signals indicate we achieve the most sensitive results to date across the explored parameter space volume, probing to strain magnitudes as low as ∼6.3×10−26 for Cas A and ∼5.6×10−26 for Vela Jr. at frequencies near 166 Hz at 95% efficiency.

关键词： Astrophysical studies of gravity Gravitational wave detection Gravitational wave sources Gravitational waves

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Follow-up of GWtC-2 gravitational wave events with neutrinos from the super-Kamiokande detector 37

Follow-up of GWTC-2 gravitational wave events with neutrinos...

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37th international Cosmic Ray Conference, iCRC 2021

作者： Abe, K. Bronner, C. Hayato, Y. Hiraide, K. ikeda, M. Kameda, J. Kanemura, Y. Kataoka, Y. Miki, s. Miura, M. Moriyama, s. Nagao, Y. Nakahata, M. Nakayama, s. Okamoto, K. Pronost, G. sekiya, H. shiozawa, M. sonoda, Y. suzuki, Y. takeda, A. takemoto, Y. takenaka, A. tanaka, H. Watanabe, s. Yano, t. Han, s. Kajita, t. Okumura, K. tashiro, t. Xia, J. Megias, G.D. Labarga, L. Marti, Ll. Zaldivar, B. Pointon, B.W. Kearns, E. Raaf, J.L. Wan, L. Wester, t. Bian, J. Griskevich, N.J. Kropp, W.R. Locke, s. Mine, s. smy, M.B. sobel, H.W. takhistov, V. Hill, J. Kim, J.Y. Lim, i.t. Park, R.G. Bodur, B. scholberg, K. Walter, C.W. Bernard, L. Coffani, A. Drapier, O. El Hedri, s. Giampaolo, A. Gonin, M. Mueller, th.A. Paganini, P. Quilain, B. ishizuka, t. Nakamura, t. Jang, J.s. Learned, J.G. Cao, s. Anthony, L.H.V. Martin, D. scott, M. sztuc, A.A. Uchida, Y. Berardi, V. Catanesi, M.G. Radicioni, E. Calabria, N.F. Machado, L.N. De Rosa, G. Collazuol, G. iacob, F. Lamoureux, Mathieu Mattiazzi, M. Ospina, N. Ludovici, L. Maekawa, Y. Nishimura, Y. Friend, M. Hasegawa, t. ishida, t. Kobayashi, t. Jakkapu, M. Matsubara, t. Nakadaira, t. Nakamura, K. Oyama, Y. sakashita, K. sekiguchi, t. tsukamoto, t. Boschi, t. Di Lodovico, F. Gao, J. Migenda, J. taani, M. Zsoldos, s. Nakano, Y. Ozaki, H. suzuki, A.t. takeuchi, Y. Yamamoto, s. Kotsar, Y. Ali, A. Feng, J. Kikawa, t. Mori, M. Nakaya, t. Wendell, R.A. Yasutome, K. Fernandez, P. McCauley, N. Mehta, P. tsui, K.M. Fukuda, Y. itow, Y. Menjo, H. sato, K. Lagoda, J. Lakshmi, s.M. Mijakowski, P. Zalipska, J. Jiang, J. Jung, C.K. Vilela, C. Wilking, M.J. Yanagisawa, C. Harada, M. ishino, H. ito, s. Kitagawa, H. Koshio, Y. Ma, W. Piplani, N. sakai, s. Barr, G. Barrow, D. Cook, L. Goldsack, A. samani, s. Wark, D. Nova, F. Yang, J.Y. Jenkins, s.J. Malek, M. McElwee, J.M. stone, O. thiesse, M.D. thompson, L.F. Okazawa, H. Kamioka Observatory Institute for Cosmic Ray Research University of Tokyo Kamioka Gifu506-1205 Japan Research Center for Cosmic Neutrinos Institute for Cosmic Ray Research University of Tokyo Chiba Kashiwa277-8582 Japan Institute for Cosmic Ray Research University of Tokyo Chiba Kashiwa277-8582 Japan Department of Theoretical Physics University Autonoma Madrid Madrid28049 Spain Department of Physics Boston University BostonMA02215 United States Department of Physics British Columbia Institute of Technology BurnabyBCV5G 3H2 Canada Department of Physics and Astronomy University of California Irvine IrvineCA92697-4575 United States Department of Physics California State University Dominguez Hills CarsonCA90747 United States Institute for Universe and Elementary Particles Chonnam National University Gwangju61186 Korea Republic of Department of Physics Duke University DurhamNC27708 United States Ecole Polytechnique IN2P3-CNRS Laboratoire Leprince-Ringuet PalaiseauF-91120 France Junior College Fukuoka Institute of Technology Fukuoka Fukuoka811-0295 Japan Department of Physics Gifu University Gifu501-1193 Japan GIST College Gwangju Institute of Science and Technology Gwangju500-712 Korea Republic of Department of Physics and Astronomy University of Hawaii HonoluluHI96822 United States Institute for Interdisciplinary Research in Science and Education ICISE Quy Nhon55121 Viet Nam Department of Physics Imperial College London LondonSW7 2AZ United Kingdom Dipartimento Interuniversitario di Fisica INFN Sezione di Bari Università e Politecnico di Bari BariI-70125 Italy Dipartimento di Fisica INFN Sezione di Napoli Università di Napoli NapoliI-80126 Italy Dipartimento di Fisica INFN Sezione di Padova Università di Padova PadovaI-35131 Italy INFN Sezione di Roma Università di Roma "La Sapienza" RomaI-00185 Italy Department of Physics Keio University Kanagawa Yokohama223-8522 Japan Ibaraki Tsukuba305-0801 Japan Depar

super-Kamiokande (sK) is a 50-kt water Cherenkov detector, instrumented with ∼ 13k photo-multipliers and running since 1996. it is sensitive to neutrinos with energies ranging from 4.5 MeV to several teV. A new framework has been developed for the follow-up of gravitational wave (GW) alerts issued by the LiGO-Virgo collaboration (LVC). Neutrinos are searched for, using a 1000-second time window centered on the alert time and in both sK low-energy and high-energy samples. such observation can then be used to constrain the neutrino emission from the GW source. the significance of potential signals has been obtained by comparing neutrino direction with the localization of the GW. the computation of limits on incoming neutrino flux and on the total energy emitted in neutrinos by the source has been performed for the different neutrino flavors. the results using the LVC GWtC-2 catalog (covering O3a period) are presented, as well as the outlooks for the future real-time public release of follow-ups for the O4 period (in 2022) and beyond. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 international License (CC BY-NC-ND 4.0)

关键词： Gravity waves

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