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arXiv 2025年

作者： Bhandarkar, Tanay Haridas, Saianeesh K. Iuliano, Jeff Kofman, Anna Manduca, Alex Sarmiento, Karen Perez Orlowski-Scherer, John Satterthwaite, Thomas P. Wang, Yuhan Ahmed, Zeeshan Austermann, Jason E. Bae, Kyuyoung Coppi, Gabriele Devlin, Mark J. Dicker, Simon R. Dow, Peter N. Duff, Shannon M. Dutcher, Daniel Galitzki, Nicholas Gudmundsson, Jon E. Henderson, Shawn W. Hubmayr, Johannes Johnson, Bradley R. Koc, Matthew A. Koopman, Brian J. Limon, Michele Link, Michael J. Lucas, Tammy J. Moore, Jenna E. Nati, Federico Niemack, Michael D. Sierra, Carlos E. Silva-Feaver, Max Singh, Robinjeet Staggs, Suzanne T. Sonka, Rita F. Thornton, Robert J. Tsan, Tran Van Lanen, Jeff L. Vavagiakis, Eve M. Vissers, Michael R. Walters, Liam Zannoni, Mario Zheng, Kaiwen Department of Physics and Astronomy University of Pennsylvania PhiladelphiaPA19104 United States Department of Astronomy and Astrophysics University of Chicago ChicagoIL60637 United States Department of Physics Stanford University StanfordCA94305 United States Kavli Institute for Particle Astrophysics and Cosmology StanfordCA94305 United States Department of Physics Cornell University IthacaNY14853 United States SLAC National Accelerator Laboratory Menlo ParkCA94025 United States National Institute of Standards and Technology Quantum Sensors Division 325 Broadway BoulderCO80305 United States Department of Physics University of Colorado BoulderCO80309 United States Department of Physics University of Milano-Bicocca Milano Italy Istituto Nazionale di Fisica Nucleare INFN Sezione Milano-Bicocca Italy Department of Astronomy University of Virginia 530 McCormick Rd CharlottesvilleVA22904 United States Department of Physics Princeton University PrincetonNJ08540 United States Department of Physics University of Texas at Austin AustinTX78712 United States Weinberg Institute for Theoretical Physics Texas Center for Cosmology and Astroparticle Physics AustinTX78712 United States Science Institute University of Iceland Reykjavik107 Iceland The Oskar Klein Centre Department of Physics Stockholm University AlbaNova StockholmSE-10691 Sweden Wright Laboratory Department of Physics Yale University New HavenCT06511 United States Department of Physics Duke University DurhamNC27708 United States Department of Physics University of Milano-Bicocca MI Milano20126 Italy Department of Physics West Chester University of Pennsylvania West ChesterPA19383 United States Department of Physics and Astronomy University of Pennsylvania 209 South 33rd Street PhiladelphiaPA19104 United States Physics Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States

The Simons Observatory (SO) is a ground-based cosmic microwave background (CMB) survey experiment that currently consists of three 0.42 m small-aperture telescopes (SATs) and one 6 m large-aperture telescope (LAT), located at an elevation of 5200 m in the Atacama Desert in Chile. At the LAT's focal plane, SO will install >62,000 transition-edge sensor detectors across 13 optics tubes (OTs) within the Large Aperture Telescope Receiver (LATR), the largest cryogenic camera ever built to observe the CMB. Here we report on the validation of the LATR in the laboratory and the subsequent dark testing and validation within the LAT. We show that the LATR meets cryogenic, optical, and detector specifications required for high-sensitivity measurements of the CMB. At the time of writing, the LATR is installed in the LAT with six OTs (corresponding to >31,000 detectors), and the LAT mirrors and remaining seven OTs are undergoing development. Copyright © 2025, The Authors. All rights reserved.

关键词： cosmology

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A novel method of measuring cosmological distances using broad-line regions of quasars

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science Bulletin 2020年第17期65卷 1419-1421页

作者： Hong Li Xin Zhang Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Department of Physics College of SciencesNortheastern UniversityShenyang 110819China Ministry of Education’s Key Laboratory of Data Analytics and Optimization for Smart Industry Northeastern UniversityShenyang 110819China Center for High Energy Physics Peking UniversityBeijing 100080China Center for Gravitation and Cosmology Yangzhou UniversityYangzhou 225009China

Our ancestors,such as Cro-Magnon,always looked up at the stars and wished to understand the mysteries of the universe,but their view of the universe was probably quite simple:the stars are inlaid on the inner surface of the sky,and they are very ***,now we know that stars and galaxies are actually extreextremely huge,and they look small because they are too far away from *** indicates that the measurement of cosmological distance is always very important in the study of the universe.

关键词： stars universe 类星体

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Flavor physics at CEPC: a General Perspective

arXiv

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arXiv 2024年

作者： Ai, Xiaocong Altmannshofer, Wolfgang Athron, Peter Bai, Xiaozhi Calibbi, Lorenzo Cao, Lu Che, Yuzhi Chen, Chunhui Chen, Ji-Yuan Chen, Long Chen, Mingshui Chen, Shanzhen Chen, Xuan Cheng, Shan Chiang, Cheng-Wei Crivellin, Andreas Cui, Hanhua Deschamps, Olivier Descotes-Genon, Sébastien Du, Xiaokang Fang, Shuangshi Gao, Yu Geng, Li-Sheng Goldenzweig, Pablo Gu, Jiayin Guo, Feng-Kun Guo, Yuchen Guo, Zhi-Hui Han, Tao He, Hong-Jian He, Jibo He, Miao Huang, Yanping Isidori, Gino Ji, Quan Jiang, Jianfeng Jiang, Xu-Hui Kamenik, Jernej F. Kwok, Tsz Hong Li, Gang Li, Geng Li, Haibo Li, Haitao Li, Hengne Li, Honglei Li, Liang Li, Lingfeng Li, Qiang Li, Shu Li, Xiaomei Li, Xin-Qiang Li, Yiming Li, Yubo Li, Yuji Li, Zhao Liang, Hao Liang, Zhijun Liao, Libo Ligeti, Zoltan Liu, Jia Liu, Jianbei Liu, Tao Liu, Yi Liu, Yong Liu, Zhen Lou, Xinchou Lu, Peng-Cheng Lusiani, Alberto Ma, Hong-Hao Ma, Kai Mao, Yaxian Marzocca, David Niu, Juan-Juan Prell, Soeren Qi, Huirong Qian, Sen Qian, Zhuoni Qin, Qin Rock, Ariel Rosner, Jonathan L. Ruan, Manqi Shao, Dingyu Shen, Chengping Shen, Xiaoyan Shi, Haoyu Shi, Liaoshan Si, Zong-Guo Sierra, Cristian Song, Huayang Su, Shufang Su, Wei Tammaro, Michele Wang, En Wang, Fei Wang, Hengyu Wang, Jian Wang, Jianchun Wang, Kun Wang, Lian-Tao Wang, Wei Wang, Xiaolong Wang, Xiaoping Wang, Yadi Wang, Yifang Wang, Yuexin Wu, Xing-Gang Wu, Yongcheng Xiao, Rui-Qing Xie, Ke-Pan Xie, Yuehong Xu, Zijun Yang, Haijun Yang, Hongtao Yang, Lin Yang, Shuo Yin, Zhongbao Yu, Fusheng Yuan, Changzheng Yuan, Xing-Bo Yuan, Xuhao Yue, Chongxing Zhan, Xi-Jie Zhang, Kaili Zhang, Liming Zhang, Xiaoming Zhang, Yang Zhang, Yanxi Zhang, Yongchao Zhang, Yu Zhang, Zhen-Hua Zhang, Zhong Zhao, Mingrui Zhao, Qiang Zheng, Xu-Chang Zheng, Yangheng Zhou, Chen Zhu, Pengxuan Zhu, Yongfeng Zuo, Xunwu Zupan, Jure School of Physics Zhengzhou University Zhengzhou450001 China Department of Physics Santa Cruz Institute for Particle Physics University of California Santa Cruz95064 United States Department of Physics Institute of Theoretical Physics Nanjing Normal University Nanjing210023 China University of Science and Technology of China Hefei230026 China School of Physics Nankai University Tianjin300071 China Fudan University Shanghai200438 China Hamburg22607 Germany Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China Beijing100049 China Department of Physics and Astronomy Iowa State University AmesIA50011-1026 United States School of Physics Shandong University Shandong Jinan250100 China School of Physics and Electronics Hunan University Changsha410082 China Department of Physics Center for Theoretical Physics National Taiwan University Taipei10617 Taiwan VilligenCH-5232 Switzerland Physik-Institut Universität Zürich ZürichCH-8057 Switzerland Université Clermont Auvergne CNRS IN2P3 LPC Clermont-Ferrand63178 France Université Paris-Saclay CNRS IN2P3 IJCLab Orsay91405 France Institute of Physics Henan Academy of Sciences Zhengzhou450046 China School of Physics Beihang University Beijing100191 China Karlsruhe76131 Germany Department of Physics Fudan University Shanghai200438 China Center for Field Theory and Particle Physics Fudan University Shanghai200438 China Fudan University Shanghai200438 China CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences Beijing100190 China Peng Huanwu Collaborative Center for Research and Education Beihang University Beijing100191 China Department of Physics Liaoning Normal University Dalian116029 China Center for Theoretical and Experimental High Energy Physics Liaoning Normal University Dalian116029 China Department of Physics Hebei Key Laboratory of Photophysics Research and Application Hebei Norma

We discuss the landscape of flavor physics at the Circular Electron-Positron Collider (CEPC), based on the nominal luminosity outlined in its Technical Design Report. The CEPC is designed to operate in multiple modes to address a variety of tasks. At the Z pole, the expected production of 4 Tera Z bosons will provide unique and highly precise measurements of Z boson couplings, while the substantial number of boosted heavy-flavored quarks and leptons produced in clean Z decays will facilitate investigations into their flavor physics with unprecedented precision. We investigate the prospects of measuring various physics benchmarks and discuss their implications for particle theories and phenomenological models. Our studies indicate that, with its highlighted advantages and anticipated excellent detector performance, the CEPC can explore beauty and τ physics in ways that are superior to or complementary with the Belle II and Large-Hadron-Collider-beauty experiments, potentially enabling the detection of new physics at energy scales of 10 TeV and above. This potential also extends to the observation of yet-to-be-discovered rare and exotic processes, as well as testing fundamental principles such as lepton flavor universality, lepton and baryon number conservation, etc., making the CEPC a vibrant platform for flavor physics research. The WW threshold scan, Higgs-factory operation and top-pair productions of the CEPC further enhance its merits in this regard, especially for measuring the Cabibbo-Kobayashi-Maskawa matrix elements, and Flavor-Changing-Neutral-Current physics of Higgs boson and top quarks. We outline the requirements for detector performance and considerations for future development to achieve the anticipated scientific goals. The role of machine learning for innovative detector design and advanced reconstruction algorithms is also stressed. The CEPC flavor physics program not only develops new capabilities for exploring flavor physics beyond existing projec

关键词： Bosons

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Luminosities and energies of e^(+)e^(−) collision data taken between √s=4.61 GeV and 4.95 GeV at BESⅢ

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Chinese physics C 2022年第11期46卷 64-75页

作者： M.Ablikim M.N.Achasov P.Adlarson M.Albrecht R.Aliberti A.Amoroso M.R.An Q.An X.H.Bai Y.Bai O.Bakina R.Baldini Ferroli I.Balossino Y.Ban V.Batozskaya D.Becker K.Begzsuren N.Berger M.Bertani D.Bettoni F.Bianchi J.Bloms A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang W.L.Chang G.Chelkov C.Chen G.Chen H.S.Chen M.L.Chen S.J.Chen T.Chen X.R.Chen X.T.Chen Y.B.Chen Z.J.Chen W.S.Cheng X.Chu G.Cibinetto F.Cossio J.J.Cui H.L.Dai J.P.Dai A.Dbeyssi R.Ede Boer D.Dedovich Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori Y.Ding J.Dong L.Y.Dong M.Y.Dong X.Dong S.X.Du P.Egorov Y.L.Fan J.Fang S.S.Fang W.X.Fang Y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng K Fischer M.Fritsch C.Fritzsch C.D.Fu H.Gao Y.N.Gao Yang Gao S.Garbolino I.Garzia P.T.Ge C.Geng E.M.Gersabeck A Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco M.H.Gu C.Y Guan A.Q.Guo L.B.Guo R.P.Guo Y.P.Guo A.Guskov T.T.Han W.Y.Han X.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herold M.Himmelreich T.Holtmann G.Y.Hou Y.R.Hou Z.L.Hou H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang K.X.Huang L.Q.Huang L.Q.Huang X.T.Huang Y.P.Huang Z.Huang T.Hussain N Husken W.Imoehl M.Irshad J.Jackson S.Jaeger S.Janchiv Q.Ji Q.P.Ji X.B.Ji X.L.Ji Y.Y.Ji Z.K.Jia H.B.Jiang S.S.Jiang X.S.Jiang Y.Jiang J.B.Jiao Z.Jiao S.Jin Y.Jin M.Q.Jing T.Johansson N.Kalantar-Nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc W.Kuhn J.J.Lane J.S.Lange P.Larin A.Lavania L.Lavezzi Z.H.Lei H.Leithoff M.Lellmann T.Lenz C.Li C.Li C.H.Li Cheng Li D.M.Li F.Li G.Li H.Li H.Li H.B.Li H.J.Li H.N.Li J.Q.Li J.S.Li J.W.Li Ke Li L.J Li L.K.Li Lei Li M.H.Li P.R.Li S.X.Li S.Y.Li T.Li W.D.Li W.G.Li X.H.Li X.L.Li Xiaoyu Li Z.Y.Li H.Liang H.Liang H.Liang Y.F.Liang Y.T.Liang G.R.Liao L.Z.Liao J.Libby A.Limphirat C.X.Lin D.X.Lin T.Lin B.J.Liu C.X.Liu D.Liu F.H.Liu Fang Liu Feng Liu G.M.Liu H.Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.L.Liu J.Y.Liu K.Liu K.Y.L Institute of High Energy Physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China China Center of Advanced Science and Technology Beijing 100190China COMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China G.I.Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Hangzhou Normal University Hangzhou 310036China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University of Science and Technology Luoyang 471003China Henan University of Technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Institute of Modern Physics Lanzhou 730000China Institute of Physics and Technology Peace Ave.54BUlaanbaatar 13330Mongolia Jilin University Changchun 130012China Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia Justus-Liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16

From December 2019 to June 2021,the BESⅢ experiment collected approximately 5.85 fb^(−1) of data at center-of-mass energies between 4.61 and 4.95 *** is the highest collision energy BEPCⅡ has reached to *** accumulated e^(+)e^(−) annihilation data samples are useful for studying charmonium(-like)states and charmed-hadron *** adopting a novel method of analyzing the production of A_(c)^(+)A_(c)^(-) pairs in e^(+)e^(−) annihilation,the center-of-mass energies are measured with a precision of 0.6 *** luminosities are measured with a precision of better than 1% by analyzing the events of large-angle Bhabha *** measurements provide important inputs to analyses based on these data samples.

关键词： luminosity center-of-mass energy BESⅢdetector

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Observation of the Y(4230)and a new structure in e^(+)e^(-)→K^(+)K^(-)J/Ψ

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Chinese physics C 2022年第11期46卷 7-21页

The cross sections of e^(+)e^(-)→K^(+)K^(-)J/Ψat center-of-mass energies from 4.127 to 4.600 GeV are measured based on 15.6 fb-1data collected with the BESⅢ detector operating at the BEPCⅡ storage *** resonant structures are observed in the line shape of the cross *** mass and width of the first structure are measured to be(4225.3±2.3±21.5)MeV and(72.9±6.1±30.8)MeV,*** are consistent with those of the established Y(4230).The second structure is observed for the first time with a statistical significance greater than 8σ,denoted as Y(4500).Its mass and width are determined to be(4484.7±13.3±24.1)MeV and(111.1±30.1±15.2)MeV,*** first presented uncertainties are statistical and the second ones are *** product of the electronic partial width with the decay branching fractionΓ(Y(4230)→e^(+)e^(−))B(Y(4230)→K^(+)K^(−)J/Ψ)is reported.

关键词： Y states charmonium-like states BESⅢ

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AnaBHEL (Analog Black Hole Evaporation via Lasers) Experiment: Concept, Design, and Status

arXiv

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arXiv 2022年

作者： Chen, Pisin Mourou, Gerard Besancon, Marc Fukuda, Yuji Glicenstein, Jean-Francois Nam, Jiwoo Lin, Ching-En Lin, Kuan-Nan Liu, Shu-Xiao Liu, Yung-Kun Kando, Masaki Kondo, Kotaro Paganis, Stathes Pirozhkov, Alexander Takabe, Hideaki Tuchming, Boris Wang, Wei-Po Watamura, Naoki Wheeler, Jonathan Wu, Hsin-Yeh Leung Center for Cosmology and Particle Astrophysics National Taiwan University Taipei10617 Taiwan Department of Physics National Taiwan University Taipei10617 Taiwan Graduate Institute of Astrophysics National Taiwan University Taipei10617 Taiwan IZEST Ecole Polytechnique Palaiseau France Irfu CEA Université Paris-Saclay Gif sur Yvette F-91191 France Kansai Photon Science Institute National Institutes for Quantum Science and Technology 8-1-7 Umemidai Kizugawa Kyoto619-0215 Japan

Accelerating relativistic mirror has long been recognized as a viable setting where the physics mimics that of black hole Hawking radiation. In 2017, Chen and Mourou proposed a novel method to realize such a system by traversing an ultra-intense laser through a plasma target with a decreasing density. An international AnaBHEL (Analog Black Hole Evaporation via Lasers) Collaboration has been formed with the objectives of observing the analog Hawking radiation and shedding light on the information loss paradox. To reach these goals, we plan to first verify the dynamics of the flying plasma mirror and to characterize the correspondence between the plasma density gradient and the trajectory of the accelerating plasma mirror. We will then attempt to detect the analog Hawking radiation photons and measure the entanglement between the Hawking photons and their "partner particles". In this paper, we describe our vision and strategy of AnaBHEL using the Apollon laser as a reference, and we report on the progress of our R&D of the key components in this experiment, including the supersonic gas jet with a graded density profile, and the superconducting nanowire single-photon Hawking detector. In parallel to these hardware efforts, we performed computer simulations to estimate the potential backgrounds, and derive analytic expressions for modifications to the blackbody spectrum of Hawking radiation for a perfectly reflecting, point mirror, due to the semit-ransparency and finite-size effects specific to flying plasma mirrors. Based on this more realistic radiation spectrum, we estimate the Hawking photon yield to guide the design of the AnaBHEL experiment, which appears to be achievable. © 2022, CC BY.

关键词： Photons

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Energy spectrum and the shower maxima of cosmic rays above the knee region measured with the NICHE detectors at the TA site 37

Energy spectrum and the shower maxima of cosmic rays above t...

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37th International Cosmic Ray Conference, ICRC 2021

作者： Omura, Yugo Tsuda, Ryosuke Tsunesada, Yoshiki Bergman, Douglas R. Krizmanic, John F. Abbasi, R.U. Abu-Zayyad, T. Allen, M. Arai, Y. Arimura, R. Barcikowski, E. Belz, J.W. Bergman, D.R. Blake, S.A. Buckland, I. Cady, R. Cheon, B.G. Chiba, J. Chikawa, M. Fujii, T. Fujisue, K. Fujita, K. Fujiwara, R. Fukushima, M. Fukushima, R. Furlich, G. Gonzalez, R. Hanlon, W. Hayashi, M. Hayashida, N. Hibino, K. Higuchi, R. Honda, K. Ikeda, D. Inadomi, T. Inoue, N. Ishii, T. Ito, H. Ivanov, D. Iwakura, H. Iwasaki, A. Jeong, H.M. Jeong, S. Jui, C.C.H. Kadota, K. Kakimoto, F. Kalashev, O. Kasahara, K. Kasami, S. Kawai, H. Kawakami, S. Kawana, S. Kawata, K. Kharuk, I. Kido, E. Kim, H.B. Kim, J.H. Kim, J.H. Kim, M.H. Kim, S.W. Kimura, Y. Kishigami, S. Kubota, Y. Kurisu, S. Kuzmin, V. Kuznetsov, M. Kwon, Y.J. Lee, K.H. Lubsandorzhiev, B. Lundquist, J.P. Machida, K. Matsumiya, H. Matsuyama, T. Matthews, J.N. Mayta, R. Minamino, M. Mukai, K. Myers, I. Nagataki, S. Nakai, K. Nakamura, R. Nakamura, T. Nakamura, T. Nakamura, Y. Nakazawa, A. Nishio, E. Nonaka, T. Oda, H. Ogio, S. Ohnishi, M. Ohoka, H. Oku, Y. Okuda, T. Omura, Y. Ono, M. Onogi, R. Oshima, A. Ozawa, S. Park, I.H. Potts, M. Pshirkov, M.S. Remington, J. Rodriguez, D.C. Rubtsov, G.I. Ryu, D. Sagawa, H. Sahara, R. Saito, Y. Sakaki, N. Sako, T. Sakurai, N. Sano, K. Sato, K. Seki, T. Sekino, K. Shah, P.D. Shibasaki, Y. Shibata, F. Shibata, N. Shibata, T. Shimodaira, H. Shin, B.K. Shin, H.S. Shinto, D. Smith, J.D. Sokolsky, P. Sone, N. Stokes, B.T. Stroman, T.A. Takagi, Y. Takahashi, Y. Takamura, M. Takeda, M. Takeishi, R. Taketa, A. Takita, M. Tameda, Y. Tanaka, H. Tanaka, K. Tanaka, M. Tanoue, Y. Thomas, S.B. Thomson, G.B. Tinyakov, P. Tkachev, I. Tokuno, H. Tomida, T. Troitsky, S. Tsuda, R. Uchihori, Y. Udo, S. Uehama, T. Urban, F. Wong, T. Yada, K. Yamamoto, M. Yamazaki, K. Yang, J. Yashiro, K. Yoshida, F. Yoshioka, Y. Zhezher, Y. Zundel, Z. Osaka City University Graduate School of Science Osaka Japan The University of Utah Department of Physics and Astronomy Salt Lake CityUT United States University of Maryland Baltimore County BaltimoreMD United States Department of Physics Loyola University Chicago ChicagoIL United States High Energy Astrophysics Institute Department of Physics and Astronomy University of Utah Salt Lake CityUT United States Graduate School of Science Osaka City University Osaka Osaka Japan Department of Physics The Research Institute of Natural Science Hanyang University Seongdong-gu Seoul Korea Republic of Department of Physics Tokyo University of Science Chiba Noda Japan Institute for Cosmic Ray Research University of Tokyo Chiba Kashiwa Japan The Hakubi Center for Advanced Research Graduate School of Science Kyoto University Kitashirakawa-Oiwakecho Sakyo-ku Kyoto Japan Information Engineering Graduate School of Science and Technology Shinshu University Nagano Nagano Japan Faculty of Engineering Kanagawa University Kanagawa Yokohama Japan Interdisciplinary Graduate School of Medicine and Engineering University of Yamanashi Yamanashi Kofu Japan Academic Assembly School of Science and Technology Institute of Engineering Shinshu University Nagano Nagano Japan The Graduate School of Science and Engineering Saitama University Saitama Saitama Japan Astrophysical Big Bang Laboratory RIKEN Saitama Wako Japan Department of Physics SungKyunKwan University Jang-an-gu Suwon Korea Republic of Department of Physics Tokyo City University Setagaya-ku Tokyo Japan Institute for Nuclear Research The Russian Academy of Sciences Moscow Russia Faculty of Systems Engineering and Science Shibaura Institute of Technology Minato-ku Tokyo Japan Department of Engineering Science Faculty of Engineering Osaka Electro-Communication University Neyagawa-shi Osaka Japan Department of Physics Chiba University Chiba Chiba Japan Service de Physique Théorique Université Li

The Non-Imaging CHErenkov (NICHE) Experiment is a low energy extension to Telescope Array (TA) using an array of closely spaced (∼100 m) light collectors covering an area of ∼2 square km. It is being deployed in the field-of-view of the FD for the TA Low Energy Extension (TALE) and overlaps with the TALE FD in the energy range above 2 PeV. Cosmic ray air showers with energies 1–100 PeV will be reconstructed using the Lateral Distribution of Cherenkov light from the air showers. This method allows shower energy and the maximum of shower depth (Xmax) to be determined. A prototype of the array, j-NICHE, has been making routine observations with 14 detectors since May, 2019. We will present the latest results of NICHE including the energy spectrum and the shower maximum distribution around the cosmic ray knee. © Copyright owned by the author(s).

关键词： Cosmic rays

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The Seoul National University AGN Monitoring Project III: Hβ lag measurements of 32 luminous AGNs and the high-luminosity end of the size-luminosity relation

arXiv

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arXiv 2023年

作者： Woo, Jong-Hak Wang, Shu Rakshit, Suvendu Cho, Hojin Son, Donghoon Bennert, Vardha N. Gallo, Elena Hodges-Kluck, Edmund Treu, Tommaso Barth, Aaron J. Cho, Wanjin Foord, Adi Geum, Jaehyuk Guo, Hengxiao Jadhav, Yashashree Jeon, Yiseul Kabasares, Kyle M. Kang, Won-Suk Kim, Changseok Kim, Minjin Kim, Tae-Woo Le, Huynh Anh N. Malkan, Matthew A. Mandal, Amit Kumar Park, Daeseong Spencer, Chance Shin, Jaejin Sung, Hyun-Il Vivian, U. Williams, Peter R. Yee, Nick Department of Physics & Astronomy Seoul National University Seoul08826 Korea Republic of Aryabhatta Research Institute of Observational Sciences Manora Peak Uttarakhand Nainital263001 India Physics Department California Polytechnic State University San Luis ObispoCA93407 United States Department of Astronomy University of Michigan Ann ArborMI48109 United States NASA/GSFC Code 662 GreenbeltMD20771 United States Department of Physics and Astronomy University of California Los AngelesCA90095-1547 United States Department of Physics and Astronomy 4129 Frederick Reines Hall University of California IrvineCA92697-4575 United States Kavli Institute of Particle Astrophysics and Cosmology Stanford University StanfordCA94305 United States Major in Astronomy and Atmospheric Sciences Kyungpook National University Daegu41566 Korea Republic of Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical Observatory Chinese Academy of Sciences 80 Nandan Road Shanghai200030 China National Youth Space Center Goheung59567 Korea Republic of Department of Astronomy and Space Science Chungbuk National University Cheongju28644 Korea Republic of CAS Key Laboratory for Research in Galaxies and Cosmology Department of Astronomy University of Science and Technology of China Hefei230026 China Korea Astronomy and Space Science Institute Daejeon34055 Korea Republic of

We present the main results from a long-term reverberation mapping campaign carried out for the Seoul National University Active Galactic Nuclei (AGN) Monitoring Project. High-quality data were obtained during 2015-2021 for 32 luminous AGNs (i.e., continuum luminosity in the range of 1044−46 erg s−1) at a regular cadence, of 20-30 days for spectroscopy and 3-5 days for photometry. We obtain time lag measurements between the variability in the Hβ emission and the continuum for 32 AGNs;twenty-five of those have the best lag measurements based on our quality assessment, examining correlation strength, and the posterior lag distribution. Our study significantly increases the current sample of reverberation-mapped AGNs, particularly at the moderate to high luminosity end. Combining our results with literature measurements, we derive a Hβ broad line region size–luminosity relation with a shallower slope than reported in the literature. For a given luminosity, most of our measured lags are shorter than the expectation, implying that single-epoch black hole mass estimators based on previous calibrations could suffer large systematic uncertainties. © 2023, CC BY.

关键词： Luminance

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Erratum:A Search for Solar Axions and Anomalous Neutrino Magnetic Moment with the Complete PandaX-Ⅱ data[***.38(2021)011301]

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Chinese physics Letters 2021年第10期38卷 71-72页

作者： Xiaopeng Zhou Xinning Zeng Xuyang Ning Abdusalam Abdukerim Wei Chen Xun Chen Yunhua Chen Chen Cheng Xiangyi Cui Yingjie Fan Deqing Fang Changbo Fu Mengting Fu Lisheng Geng Karl Giboni Linhui Gu Xuyuan Guo Ke Han Changda He Di Huang Yan Huang Yanlin Huang Zhou Huang Xiangdong Ji Yonglin Ju Shuaijie Li Huaxuan Liu Jianglai Liu † Xiaoying Lu Wenbo Ma Yugang Ma Yajun Mao Yue Meng Kaixiang Ni Jinhua Ning Xiangxiang Ren Changsong Shang Guofang Shen Lin Si Andi Tan Anqing Wang Hongwei Wang Meng Wang Qiuhong Wang Siguang Wang Wei Wang Xiuli Wang Zhou Wang Mengmeng Wu Shiyong Wu Weihao Wu Jingkai Xia Mengjiao Xiao Pengwei Xie Binbin Yan Jijun Yang Yong Yang Chunxu Yu Jumin Yuan Ying Yuan Dan Zhang Tao Zhang Li Zhao Qibin Zheng Jifang Zhou Ning Zhou INPAC School of Physics and AstronomyShanghai Jiao Tong Universityand Shanghai Key Laboratory for Particle Physics and CosmologyShanghai 200240China School of Physics Beihang UniversityBeijing 100191China Shanghai Jiao Tong University Sichuan Research Institute Chengdu 610213China Yalong River Hydropower Development Company Ltd.288 Shuanglin RoadChengdu 610051China School of Physics Sun Yat-Sen UniversityGuangzhou 510275China Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China School of Physics Nankai UniversityTianjin 300071China Key Laboratory of Nuclear Physics and Ion-Beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China School of Physics Peking UniversityBeijing 100871China International Research Center for Nuclei and Particles in the Cosmos&Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing 100191China School of Medical Instrument and Food Engineering University of Shanghai for Science and TechnologyShanghai 200093China Department of Physics University of MarylandCollege ParkMaryland 20742USA School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Physics and Key Laboratory of Particle Physics and Particle Irradiation(MOE) Shandong UniversityJinan 250100China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China Center for High Energy Physics Peking UniversityBeijing 100871China

In our published letter,[1]we have identified a minor error in Figs.2 and ***,we have 2111 events in these two plots with 646,249,382,and 834 events in Run 9(20.0 ton·day),Run 10(19.4 ton·day),Run 11–1(24.2 ton·day),and Run 11–2(37.1 ton·day).The mistake is due to an incorrect application of a small energy non-linearity(known as the BLS non-linearity)in making plots,but has no impact to the final *** 2 and 3 are now updated in this note.

关键词： letter error

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Measurement of the cosmic ray proton and helium spectrum with energy above 100TeV by the LHAASO experiment 37

Measurement of the cosmic ray proton and helium spectrum wit...

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37th International Cosmic Ray Conference, ICRC 2021

作者： Lingling, Ma Yudong, Wang Liping, Wang Liqiao, Yin Zhiyong, You Shoushan, Zhang Cao, Zhen Aharonian, F. An, Q. Axikegu Bai, L.X. Bai, Y.X. Bao, Y.W. Bastieri, D. Bi, X.J. Bi, Y.J. Cai, H. Cai, J.T. Cao, Zhe Chang, J. Chang, J.F. Chen, B.M. Chen, E.S. Chen, J. Chen, Liang Chen, Long Chen, M.J. Chen, M.L. Chen, Q.H. Chen, S.H. Chen, S.Z. Chen, T.L. Chen, X.L. Chen, Y. Cheng, N. Cheng, Y.D. Cui, S.W. Cui, X.H. Cui, Y.D. D’Ettorre Piazzoli, B. Dai, B.Z. Dai, H.L. Dai, Z.G. Danzengluobu della Volpe, D. Dong, X.J. Duan, K.K. Fan, J.H. Fan, Y.Z. Fan, Z.X. Fang, J. Fang, K. Feng, C.F. Feng, L. Feng, S.H. Feng, Y.L. Gao, B. Gao, C.D. Gao, L.Q. Gao, Q. Gao, W. Ge, M.M. Geng, L.S. Gong, G.H. Gou, Q.B. Gu, M.H. Guo, F.L. Guo, J.G. Guo, X.L. Guo, Y.Q. Guo, Y.Y. Han, Y.A. He, H.H. He, H.N. He, J.C. He, S.L. He, X.B. He, Y. Heller, M. Hor, Y.K. Hou, C. Hu, H.B. Hu, S. Hu, S.C. Hu, X.J. Huang, D.H. Huang, Q.L. Huang, W.H. Huang, X.T. Huang, X.Y. Huang, Z.C. Ji, F. Ji, X.L. Jia, H.Y. Jiang, K. Jiang, Z.J. Jin, C. Ke, T. Kuleshov, D. Levochkin, K. Li, B.B. Li, Cheng Li, Cong Li, F. Li, H.B. Li, H.C. Li, H.Y. Li, J. Li, K. Li, W.L. Li, X.R. Li, Xin Li, Y. Li, Y.Z. Li, Zhe Li, Zhuo Liang, E.W. Liang, Y.F. Lin, S.J. Liu, B. Liu, C. Liu, D. Liu, H. Liu, H.D. Liu, J. Liu, J.L. Liu, J.S. Liu, J.Y. Liu, M.Y. Liu, R.Y. Liu, S.M. Liu, W. Liu, Y. Liu, Y.N. Liu, Z.X. Long, W.J. Lu, R. Lv, H.K. Ma, B.Q. Ma, L.L. Ma, X.H. Mao, J.R. Masood, A. Min, Z. Mitthumsiri, W. Montaruli, T. Nan, Y.C. Pang, B.Y. Pattarakijwanich, P. Pei, Z.Y. Qi, M.Y. Qi, Y.Q. Qiao, B.Q. Qin, J.J. Ruffolo, D. Rulev, V. Sáiz, A. Shao, L. Shchegolev, O. Sheng, X.D. Shi, J.Y. Song, H.C. Stenkin, Yu.V. Stepanov, V. Su, Y. Sun, Q.N. Sun, X.N. Sun, Z.B. Tam, P.H.T. The Institute of High Energy Physics The Chinese Academy of Sciences YuQuan Road.19B shijingshan district Beijing China University of Chinese Academy of Sciences Department YuQuan Road.19A shijingshan district Beijing China TIANFU Cosmic Ray Research Center Sichuan Chengdu China Shandong University Shandong Qingdao China Key Laboratory of Particle Astrophyics Experimental Physics Division Computing Center Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China University of Chinese Academy of Sciences Beijing100049 China Dublin Institute for Advanced Studies 31 Fitzwilliam Place 2 Dublin Ireland Max-Planck-Institut for Nuclear Physics P.O. Box 103980 Heidelberg69029 Germany State Key Laboratory of Particle Detection and Electronics China University of Science and Technology of China Anhui Hefei230026 China School of Physical Science and Technology School of Information Science and Technology Southwest Jiaotong University Sichuan Chengdu610031 China College of Physics Sichuan University Sichuan Chengdu610065 China School of Astronomy and Space Science Nanjing University Jiangsu Nanjing210023 China Center for Astrophysics Guangzhou University Guangdong Guangzhou510006 China School of Physics and Technology Wuhan University Hubei Wuhan430072 China Key Laboratory of Dark Matter and Space Astronomy Purple Mountain Observatory Chinese Academy of Sciences Jiangsu Nanjing210023 China Hebei Normal University Hebei Shijiazhuang050024 China Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai200030 China Ministry of Education Tibet Lhasa850000 China National Astronomical Observatories Chinese Academy of Sciences Beijing100101 China Sun Yat-Sen University Guangdong Zhuhai519000 China Dipartimento di Fisica Università di Napoli `‘Federico II" Complesso Universitario di Monte Sant’Angelo via Cinthia Napoli80126 Italy School of Phys

Large High Altitude Air Shower Observatory (LHAASO) consists of three interconnected detectors with the aim to measure several air shower characteristics simultaneously. One of the main scientific goals is to measure the individual cosmic ray spectrum at knee regime. In this paper we introduce the progress of measuring the energy spectrum of proton and helium composition of cosmic rays. According to the number of Cherenkov photons recorded by WFCTA, the energies can be reconstructed and the resolution can achieve 15% for showers produced by protons and helium with energies above 300 TeV. Due to the hybrid observation to the air showers, several parameters can be used to identify the mass compositions of the air shower. The ability of LHAASO to identify the mass composition are studied in detail in the paper. © Copyright owned by the author(s).

关键词： Helium

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