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Planet Masses, Radii, and Orbits from NASA’s K2 Mission

The Astrophysical Journal Supplement Series 2025年第2期278卷 52-52页

作者： Andrew W. Howard Evan Sinukoff Sarah Blunt Erik A. Petigura Ian J. M. Crossfield Howard Isaacson Molly Kosiarek Ryan A. Rubenzahl John M. Brewer Benjamin J. Fulton Courtney D. Dressing Lea A. Hirsch Heather Knutson John H. Livingston Sean M. Mills Arpita Roy Lauren M. Weiss Bjorn Benneke David R. Ciardi Jessie L. Christiansen William D. Cochran Justin R. Crepp Erica Gonzales Brad M. S. Hansen Kevin Hardegree-Ullman Steve B. Howell Sébastien Lépine Arturo O. Martinez Leslie A. Rogers Joshua E. Schlieder Michael Werner Alex S. Polanski Isabel Angelo Corey Beard Aida Behmard Luke G. Bouma Casey L. Brinkman Ashley Chontos Fei Dai Paul A. Dalba Steven Giacalone Samuel K. Grunblatt Michelle L. Hill Stephen R. Kane Jack Lubin Andrew W. Mayo Teo Mocnik Joseph M. Akana Murphy Malena Rice Lee J. Rosenthal Dakotah Tyler Judah Van Zandt Samuel W. Yee Department of Astronomy California Institute of Technology Pasadena CA USA Institute for Astronomy University of Hawaii 2680 Woodlawn Drive Honolulu HI USA Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy Northwestern University Evanston IL 60208 USA Department of Astronomy & Astrophysics University of California Santa Cruz CA USA Center for Astrophysics ∣ Harvard & Smithsonian 60 Garden Street Cambridge MA 02138 USA Department of Physics & Astronomy University of California Los Angeles Los Angeles CA USA Department of Physics and Astronomy University of Kansas Lawrence KS USA ianc@ku.edu Astronomy Department University of California Berkeley CA USA Department of Physics and Astronomy San Francisco State University 1600 Holloway Avenue San Francisco CA 94132 USA IPAC - NASA Exoplanet Science Institute California Institute of Technology 770 S. Wilson Avenue Pasadena CA USA Department of Chemical & Physical Sciences University of Toronto Mississauga 3359 Mississauga Road Mississauga Ontario L5L 1C6 Canada Geological and Planetary Sciences California Institute of Technology Pasadena CA USA Astrobiology Center 2-21-1 Osawa Mitaka Tokyo 181-8588 Japan National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka Tokyo 181-8588 Japan Astronomical Science Program The Graduate University for Advanced Studies SOKENDAI 2-21-1 Osawa Mitaka Tokyo 181-8588 Japan Space Telescope Science Institute 3700 San Martin Drive Baltimore MD 21218 USA Astrophysics & Space Institute Schmidt Sciences New York NY 10011 USA Department of Physics and Astronomy University of Notre Dame Notre Dame IN 46556 USA Institut de Recherche sur les Exoplanètes Université de Montréal Montréal QC Canada McDonald Observatory and Center for Planetary Systems Habitability The University of Texas Austin TX USA Department of Physics and Astronomy University of Toledo Toledo OH 43606 USA Steward Observat

We report the masses, sizes, and orbital properties of 86 planets orbiting 55 stars observed by NASA's K2 Mission with follow-up Doppler measurements by the HIRES spectrometer at the W. M. Keck Observatory and the Automated Planet Finder at Lick Observatory. Eighty-one of the planets were discovered from their transits in the K2 photometry, while five were found based on subsequent Doppler measurements of transiting planet-host stars. The sizes of the transiting planets range from Earth-size to larger than Jupiter (1–3 R_⊕ is typical), while the orbital periods range from less than a day to a few months. For 32 of the planets, the Doppler signal was detected with significance greater than 5σ (51 were detected with >3σ significance). An important characteristic of this catalog is the use of uniform analysis procedures to determine stellar and planetary properties. This includes the transit search and fitting procedures applied to the K2 photometry, the Doppler fitting techniques applied to the radial velocities (RVs), and the spectral modeling to determine bulk stellar parameters. Such a uniform treatment will make the catalog useful for statistical studies of the masses, densities, and system architectures of exoplanetary systems. This work also serves as a data release for all previously unpublished RVs and associated stellar activity indicators obtained by our team for these systems, along with derived stellar and planet parameters.

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Enhanced CO 2 photoreduction to CH 4 via *COOH and *CHO intermediates stabilization by synergistic effect of implanted P and S vacancy in thin-film SnS 2

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Nano Energy 2024年 128卷

作者： Tadios Tesfaye Mamo Mohammad Qorbani Adane Gebresilassie Hailemariam Raghunath Putikam Che-Men Chu Ting-Rong Ko Amr Sabbah Chih-Yang Huang Septia Kholimatussadiah Tadesse Billo Mahmoud Kamal Hussien Shuo-Yun Chang Ming-Chang Lin Wei-Yen Woon Heng-Liang Wu Ken-Tsung Wong Li-Chyong Chen Kuei-Hsien Chen Department of Chemistry National Taiwan University Taipei 10617 Taiwan Institute of Atomic and Molecular Sciences Academia Sinica Taipei 10617 Taiwan Nano Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei 11529 Taiwan Institute of Physics Academia Sinica Taipei 11529 Taiwan Center for Condensed Matter Sciences National Taiwan University Taipei 10617 Taiwan Center of Atomic Initiative for New Materials National Taiwan University Taipei 10617 Taiwan Sustainable Chemical Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei 11529 Taiwan Department of Applied Chemistry National Yang Ming Chiao Tung University Hsinchu 30010 Taiwan Institute of Chemistry Academia Sinica Taipei 11529 Taiwan Department of Chemistry College of Natural Science Dire Dawa University Dire Dawa 1362 Ethiopia Department of Physics National Central University Jungli 32054 Taiwan Tabbin Institute for Metallurgical Studies Tabbin Helwan 109 Cairo 11421 Egypt International Graduate Program of Molecular Science and Technology National Taiwan University Taipei 10617 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei 11529 Taiwan Department of Physics National Taiwan University Taipei 10617 Taiwan Materials Science Division Argonne National Laboratory 9700 S. Cass Avenue Lemont IL 60439 United States Department of Chemistry Faculty of Science Assiut University Assiut 71516 Egypt Department of Chemistry National Taiwan Normal University Taipei 10610 Taiwan National Synchrotron Radiation Research Center Hsinchu 30092 Taiwan

Reduction of CO 2 to value-added hydrocarbons through artificial photosynthesis is one of the way to address the energy crisis and climate change issues. It is known that lowering the activation energy of CO 2 molecules on the photocatalyst surface and key intermediates is crucial in photocatalytic CO 2 reduction. Herein, we present phosphorus-implanted 20-nm SnS 2 continuous thin film with sulfur vacancies ( i.e. , S V -SnS 2 :P where P substitutes on S sites). The fabrication process involves thermal evaporation, post-sulfurization, and ion implantation. Our gas-phase photocatalytic experiments show an enhanced and selective CO 2 photoreduction to CH 4 with a yield of 0.13 µmol cm −2 and selectivity of 92 % under solar-light irradiation for 4 h over an optimal ∼4.5 % P and ∼16 % S V . Experimental observations, conducted through X-ray absorption near edge, in situ near ambient pressure X-ray photoelectron, and in situ Fourier transform infrared spectroscopies, along with first-principle density functional theory calculations. Results reveal that P dopant is significantly affected by nearby S V via local charge density transfer from P to the nearest Sn and next-nearest S neighbor atoms, consequently, leads to the stabilization of *COOH and *CHO intermediates, where asterisks stand for P as the active site. Our results demonstrate how active site modulation, without using precious co-catalysts, plays a crucial role in intermediate stabilization in a wireless photocatalysis process.

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Three-dimensional hydrodynamics simulations of precollapse shell burning in the Si- And O-rich layers

arXiv

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arXiv 2020年

作者： Yoshida, Takashi Takiwaki, Tomoya Kotake, Kei Takahashi, Koh Nakamura, Ko Umeda, Hideyuki Department of Astronomy Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-0033 Japan Division of Science National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Department of Applied Physics Research Institute of Stellar Explosive Phenomena Fukuoka University Fukuoka814-0180 Japan Max Planck Institute for Gravitational Physics PotsdamD-14476 Germany Department of Applied Physics Fukuoka University Fukuoka814-0180 Japan

We present 3D hydrodynamics simulations of shell burning in two progenitors with zero-age main-sequence masses of 22 and 27 M☉ for ∼65 and 200 s up to the onset of gravitational collapse, respectively. The 22 and 27 M☉ stars are selected from a suite of 1D progenitors. The former and the latter have an extended Si- and O-rich layer with a width of ∼109 cm and ∼5×109 cm, respectively. Our 3D results show that turbulent mixing occurs in both of the progenitors with the angle-averaged turbulent Mach number exceeding ∼0.1 at the maximum. We observe that an episodic burning of O and Ne, which takes place underneath the convection bases, enhances the turbulent mixing in the 22 and 27 M☉ models, respectively. The distribution of nucleosynthetic yields is significantly different from that in 1D simulations, namely, in 3D more homogeneous and inhomogeneous in the radial and angular direction, respectively. By performing a spectrum analysis, we investigate the growth of turbulence and its role of material mixing in the convective layers. We also present a scalar spherical harmonics mode analysis of the turbulent Mach number. This analytical formula would be helpful for supernova modelers to implement the precollapse perturbations in core-collapse supernova simulations. Based on the results, we discuss implications for the possible onset of the perturbation-aided neutrino-driven supernova explosion. © 2020, CC BY-NC-ND.

关键词： Hydrodynamics

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A first-principles study on the quantum tunneling of methylhydroxycarbene isomerization in various solvents 4

A first-principles study on the quantum tunneling of methylh...

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4th Padjadjaran International physics Symposium 2019, PIPS 2019

作者： Susanti, E.D. Rusydi, F. Puspitasari, I. Fadilla, R.N. Aisyah, N.D. Ahmad, A. Research Center for Quantum Engineering Design Faculty of Science and Technology Universitas Airlangga Jl. Mulyorejo Surabaya60115 Indonesia Department of Physics Faculty of Science and Technology Universitas Airlangga Jl. Mulyorejo Surabaya60115 Indonesia Precision Sciences and Technology and Applied Physics Graduate School of Engineering Osaka University Suita565-0871 Japan Information System Study Program Faculty of Science and Technology Universitas Airlangga Jl. Mulyorejo Surabaya60115 Indonesia School of Chemical Science and Food Technology Faculty of Science and Technology Universiti Kebangsaan Malaysia Bangi Selangor43600 Malaysia

Quantum tunneling phenomenon allows a high-barrier reaction to occur even though thermal energy is not sufficient to surmount the barrier. The phenomenon has been suggested to exist in the isomerization of methylhydroxycarbene which occured at 11 K. Here we study the quantum tunneling that occured in the isomerization of methylhydroxycarbene to acetaldehyde and to vinyl alcohol based on density functional calculations. The isomerization pathways are determined under the effect of various solvents which are modeled by polarizable continuum model (PCM). We use Wentzel-Kramers-Brillouin (WKB) approximation to calculate the tunneling probability (T) and extend the usefulness of T into isomerization rate. The results show that the solvents give a significant effect on the isomerization rate of methylhydroxycarbene to acetaldehyde but an insignificant one on the isomerization rate to vinyl alcohol. © 2020 IOP Publishing Ltd. All rights reserved.

关键词： Isomerization

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Sequential measurements on qubits by multiple observers: Joint best guess strategy

arXiv

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arXiv 2020年

作者： Fields, Dov Varga, Árpád Bergou, János A. Department of Physics and Astronomy Hunter College of the City University of New York 695 Park Avenue New YorkNY10065 United States Physics Program Graduate Center of the City University of New York 365 Fifth Avenue New YorkNY10016 United States Institute of Physics University of Pécs Ifjúság útja 6 PécsH-7624 Hungary

—We study sequential state discrimination measurements performed on the same qubit by subsequent observers. Specifically, we focus on the case when the observers perform a kind of a minimum-error type state discriminating measurement where the goal of the observers is to maximize their joint probability of successfully guessing the state that the qubit was initially prepared in. We call this the joint best guess strategy. In this scheme, Alice prepares a qubit in one of two possible states. The qubit is first sent to Bob, who measures it, and then on to Charlie, and so on to altogether N consecutive receivers who all perform measurements on it. The goal for all observers is to determine which state Alice sent. In the joint best guess strategy, every time a system is received the observer is required to make a guess, aided by the measurement, about its state. The price to pay for this requirement is that errors must be permitted, the guess can be correct or in error. There is a nonzero probability for all the receivers to successfully identify the initially prepared state, and we maximize this joint probability of success. This work is a step toward developing a theory of nondestructive sequential quantum measurements and could be useful in multiparty quantum communication schemes based on communicating with single qubits, particularly in schemes employing continuous variable states. It also represents a case where subsequent observers can probabilistically and optimally get around both the collapse postulate and the no-broadcasting *** Codes 81P15 (Primary), 81P45 (Secondary) Copyright © 2020, The Authors. All rights reserved.

关键词： Errors

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A peculiar ICME event in August 2018 observed with the global muon detector network

arXiv

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arXiv 2021年

作者： Kihara, W. Munakata, K. Kato, C. Kataoka, R. Kadokura, A. Miyake, S. Kozai, M. Kuwabara, T. Tokumaru, M. Mendonça, R.R.S. Echer, E. Dal Lago, A. Rockenbach, M. Schuch, N.J. Bageston, J.V. Braga, C.R. Al Jassar, H.K. Sharma, M.M. Duldig, M.L. Humble, J.E. Evenson, P. Sabbah, I. Kóta, J. Physics Department Shinshu University Matsumoto Japan National Institute of Polar Research Tachikawa Japan Department of Electrical and Electronic Systems Engineering National Institute of Technology Ibaraki College Japan Institute of Space and Astronautical Science Japan Aerospace Exploration Agency Sagamihara Japan Graduate School of Science Chiba University Chiba City Japan Institute for Space-Earth Environmental Research Nagoya University Nagoya Japan National Institute for Space Research São José dos Campos Brazil George Mason University FairfaxVA United States Physics Department Kuwait University Kuwait City Kuwait School of Natural Sciences University of Tasmania Hobart Australia Bartol Research Institute Department of Physics and Astronomy University of Delaware NewarkDE United States Department of Applied Sciences College of Technological Studies Public Authority for Applied Education and Training Shuwaikh Kuwait Lunar and Planetary Laboratory University of Arizona TucsonAZ United States

We demonstrate that global observations of high-energy cosmic rays contribute to understanding unique characteristics of a large-scale magnetic flux rope causing a magnetic storm in August 2018. Following a weak interplanetary shock on 25 August 2018, a magnetic flux rope caused an unexpectedly large geomagnetic storm. It is likely that this event became geoeffective because the flux rope was accompanied by a corotating interaction region and compressed by high-speed solar wind following the flux rope. In fact, a Forbush decrease was observed in cosmic-ray data inside the flux rope as expected, and a significant cosmic-ray density increase exceeding the unmodulated level before the shock was also observed near the trailing edge of the flux rope. The cosmic-ray density increase can be interpreted in terms of the adiabatic heating of cosmic rays near the trailing edge of the flux rope, as the corotating interaction region prevents free expansion of the flux rope and results in the compression near the trailing edge. A northeast-directed spatial gradient in the cosmic-ray density was also derived during the cosmic-ray density increase, suggesting that the center of the heating near the trailing edge is located northeast of Earth. This is one of the best examples demonstrating that the observation of high-energy cosmic rays provides us with information that can only be derived from the cosmic ray measurements to observationally constrain the three-dimensional macroscopic picture of the interaction between coronal mass ejections and the ambient solar wind, which is essential for prediction of large magnetic storms. © 2021, CC BY.

关键词： Cosmic rays

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Molecular outflow in the reionization-epoch quasar J2054-0005 revealed by OH 119 μm observations

arXiv

引用

arXiv 2023年

作者： Salak, Dragan Hashimoto, Takuya Inoue, Akio K. Bakx, Tom J.L.C. Donevski, Darko Tamura, Yoichi Sugahara, Yuma Kuno, Nario Miyamoto, Yusuke Fujimoto, Seiji Suphapolthaworn, Suphakorn Institute for the Advancement of Higher Education Hokkaido University Kita 17 Nishi 8 Kita-ku Hokkaido Sapporo060-0817 Japan Department of Cosmosciences Graduate School of Science Hokkaido University Kita 10 Nishi 8 Kita-ku Hokkaido Sapporo060-0810 Japan Faculty of Pure and Applied Science University of Tsukuba Ibaraki305-8571 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 Tokyo169-8555 Japan Department of Space Earth & Environment Chalmers University of Technology Chalmersplatsen 4 Gothenburg412 96 Sweden Pasteura 7 Warsaw02-093 Poland SISSA ISAS Via Bonomea 265 TriesteI-34136 Italy IFPU Institute for Fundamental Physics of the Universe Via Beirut 2 TriesteI-34014 Italy Division of Particle and Astrophysical Science Graduate School of Science Nagoya University Aichi 464-8602 Japan National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Department of Electrical Electronic and Computer Engineering Fukui University of Technology 3-6-1 Gakuen Fukui Fukui910-8505 Japan Department of Astronomy The University of Texas at Austin AustinTX78712 United States

Molecular outflows are expected to play a key role in galaxy evolution at high redshift. To study the impact of outflows on star formation at the epoch of reionization, we performed sensitive ALMA observations of OH 119 µm toward J2054-0005, a luminous quasar at z = 6.04. The OH line is detected and exhibits a P-Cygni profile that can be fitted with a broad blue-shifted absorption component, providing unambiguous evidence of an outflow, and an emission component at near-systemic velocity. The mean and terminal outflow velocities are estimated to be vout ≈ 670 km s-1 and 1500 km s-1, respectively, making the molecular outflow in this quasar one of the fastest at the epoch of reionization. The OH line is marginally spatially resolved for the first time in a quasar at z > 6, revealing that the outflow extends over the central 2 kpc region. The mass outflow rate is comparable to the star formation rate (M·out/SFR ∼ 2), indicating rapid (∼ 107 yr) quenching of star formation. The mass outflow rate in a sample of star-forming galaxies and quasars at 4 Copyright © 2023, The Authors. All rights reserved.

关键词： Stars

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CoNiFe-LDH nanoflowers combined with bismuth-based layered perovskite oxide (Bi₂MoO₆) for vortex-assisted micro-solid phase extraction of lead from food and water samples

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Food Chemistry 2025年 491卷

作者： Mustafa Soylak Fatma Oguz Hassan Elzain Hassan Ahmed Erciyes University Faculty of Sciences Department of Chemistry 38039 Kayseri Turkey Technology Research & Application Center (ERU-TAUM) Erciyes University 38039 Kayseri Turkey Turkish Academy of Sciences (TUBA) Cankaya Ankara Turkey Erciyes University Graduate School of Natural and Applied Sciences Chemistry Graduate Program Kayseri Türkiye Sudan Atomic Energy Commission (SAEC) – Chemistry and Nuclear Physics Institute Khartoum Sudan Sudan University of Science and Technology (SUST) – College of Science-Scientific Laboratories Department Chemistry Section Khartoum Sudan

A new CoNiFe-LDH NFs/Bi₂MoO₆ nanocomposite was synthesized, characterized, and utilized to separate and enrich Pb(II) using vortex-assisted micro-solid phase extraction (SPE). The nanocomposite's high surface area and pH-dependent charge (PZC ≈ 6) enabled superior adsorption via electrostatic interactions, achieving >98 % recovery at pH 8. A preconcentration factor of 20 was obtained by optimizing the analytical parameters: 5 mg adsorbent, 20 mL sample volume, and 1 mL of 2 mol L −1 HNO₃ eluent. The VA-μSPE method showed high accuracy for intra-day and inter-day RSDs (7.8 % and 10.2 %, respectively) and low LODs (0.12–0.20 μg kg −1 ). Accuracy was validated using two SRMs with recoveries of 95–99 % and statistical agreement. Low environmental impact was obtained by sustainability evaluations using GAPI and WAC, which put a priority on energy efficiency and decreased reagent consumption. This study offers a green, sensitive, and accurate method for Pb(II) analysis in food and water samples.

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Circuit quantization in the presence of time-dependent external flux

arXiv

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arXiv 2019年

作者： You, Xinyuan Sauls, J.A. Koch, Jens Northwestern–Fermilab Center for Applied Physics and Superconducting Technologies Northwestern University EvanstonIL60208 United States Graduate Program in Applied Physics Northwestern University EvanstonIL60208 United States Department of Physics and Astronomy Northwestern University EvanstonIL60208 United States

Circuit quantization links a physical circuit to its corresponding quantum Hamiltonian. The standard quantization procedure generally assumes any external magnetic flux to be static. Time dependence naturally arises, however, when flux is modulated or when flux noise is considered. In this case, application of the existing quantization procedure can lead to inconsistencies. To resolve these, we generalize circuit quantization to incorporate time-dependent external flux. Copyright © 2019, The Authors. All rights reserved.

关键词： Timing circuits

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Search for the radiative penguin decays B0→KS0KS0γ in the Belle experiment

引用

Physical Review D 2022年第1期106卷 012006-012006页

作者： H. B. Jeon K. H. Kang H. Park I. Adachi H. Aihara S. Al Said D. M. Asner H. Atmacan T. Aushev R. Ayad V. Babu S. Bahinipati P. Behera K. Belous J. Bennett F. Bernlochner M. Bessner V. Bhardwaj B. Bhuyan T. Bilka A. Bobrov D. Bodrov J. Borah A. Bozek M. Bračko P. Branchini T. E. Browder A. Budano M. Campajola D. Červenkov M.-C. Chang P. Chang A. Chen B. G. Cheon K. Chilikin H. E. Cho K. Cho S.-J. Cho S.-K. Choi Y. Choi S. Choudhury D. Cinabro S. Cunliffe S. Das N. Dash G. De Pietro R. Dhamija F. Di Capua J. Dingfelder Z. Doležal T. V. Dong D. Epifanov T. Ferber D. Ferlewicz B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Giri P. Goldenzweig B. Golob E. Graziani T. Gu K. Gudkova C. Hadjivasiliou T. Hara K. Hayasaka H. Hayashii M. T. Hedges T. Higuchi W.-S. Hou C.-L. Hsu K. Inami G. Inguglia A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs E.-J. Jang S. Jia Y. Jin K. K. Joo J. Kahn H. Kakuno A. B. Kaliyar T. Kawasaki C. Kiesling C. H. Kim D. Y. Kim K.-H. Kim K. T. Kim Y.-K. Kim K. Kinoshita P. Kodyš T. Konno A. Korobov S. Korpar E. Kovalenko P. Križan R. Kroeger P. Krokovny T. Kuhr M. Kumar K. Kumara A. Kuzmin Y.-J. Kwon Y.-T. Lai K. Lalwani T. Lam J. S. Lange M. Laurenza S. C. Lee C. H. Li J. Li Y. Li Y. B. Li L. Li Gioi J. Libby K. Lieret D. Liventsev A. Martini M. Masuda T. Matsuda D. Matvienko S. K. Maurya M. Merola F. Metzner K. Miyabayashi R. Mizuk G. B. Mohanty M. Nakao D. Narwal Z. Natkaniec A. Natochii L. Nayak M. Nayak N. K. Nisar S. Nishida K. Ogawa S. Ogawa H. Ono Y. Onuki P. Oskin P. Pakhlov G. Pakhlova T. Pang S. Pardi S.-H. Park A. Passeri S. Patra S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen T. Podobnik V. Popov E. Prencipe M. T. Prim M. V. Purohit M. Röhrken A. Rostomyan N. Rout G. Russo D. Sahoo S. Sandilya A. Sangal L. Santelj T. Sanuki V. Savinov G. Schnell C. Schwanda Y. Seino K. Senyo M. E. Sevior M. Shapkin C. Sharma V. Shebalin C. P. Shen J.-G. Shiu J. B. Singh A. Sokolov E. Solovieva M. Starič Z. S. Stottler J. F. Strube M. Sumihama T. Sumiyoshi M. Takizawa U. Tamponi K. Tanida F. Tenc Kyungpook National University Daegu 41566 Kavli Institute for the Physics and Mathematics of the Universe (WPI) University of Tokyo Kashiwa 277-8583 High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Brookhaven National Laboratory Upton New York 11973 University of Cincinnati Cincinnati Ohio 45221 National Research University Higher School of Economics Moscow 101000 Deutsches Elektronen–Synchrotron 22607 Hamburg Indian Institute of Technology Bhubaneswar Satya Nagar 751007 Indian Institute of Technology Madras Chennai 600036 Institute for High Energy Physics Protvino 142281 University of Mississippi University Mississippi 38677 University of Bonn 53115 Bonn University of Hawaii Honolulu Hawaii 96822 Indian Institute of Science Education and Research Mohali SAS Nagar 140306 Indian Institute of Technology Guwahati Assam 781039 Faculty of Mathematics and Physics Charles University 121 16 Prague Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 Faculty of Chemistry and Chemical Engineering University of Maribor 2000 Maribor J. Stefan Institute 1000 Ljubljana INFN—Sezione di Roma Tre I-00146 Roma INFN—Sezione di Napoli I-80126 Napoli Università di Napoli Federico II I-80126 Napoli Department of Physics Fu Jen Catholic University Taipei 24205 Department of Physics National Taiwan University Taipei 10617 National Central University Chung-li 32054 Department of Physics and Institute of Natural Sciences Hanyang University Seoul 04763 Korea Institute of Science and Technology Inform

We report results from the first search for the rare penguin-dominated decay mode B0→KS0KS0γ, which can result from the production of tensor mesons f(1270) and f′(1525) in association with a photon. The search uses the full data sample of 772×106 BB¯ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e− collider. No statistically significant signals are observed in the KS0KS0 invariant mass range 1 GeV/c2

关键词： Electroweak interaction Flavor changing neutral currents Bottom mesons Lepton colliders

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