Measurement of neutrino oscillation parameters with the first six detection units of KM3NeT/ORCA
KM3NeT Collaboration, S. Aiello, A. Albert, A. R. Alhebsi, M. Alshamsi, S. Alves Garre, A. Ambrosone, F. Ameli, M. Andre, L. Aphecetche, M. Ardid, S. Ardid, H. … 展开作者
KM3NeT Collaboration, S. Aiello, A. Albert, A. R. Alhebsi, M. Alshamsi, S. Alves Garre, A. Ambrosone, F. Ameli, M. Andre, L. Aphecetche, M. Ardid, S. Ardid, H. Atmani, J. Aublin, F. Badaracco, L. Bailly-Salins, Z. Bardačová, B. Baret, A. Bariego-Quintana, Y. Becherini, M. Bendahman, F. Benfenati, M. Benhassi, M. Bennani, D. M. Benoit, E. Berbee, V. Bertin, S. Biagi, M. Boettcher, D. Bonanno, A. B. Bouasla, J. Boumaaza, M. Bouta, M. Bouwhuis, C. Bozza, R. M. Bozza, H. Brânzaş, F. Bretaudeau, M. Breuhaus, R. Bruijn, J. Brunner, R. Bruno, E. Buis, R. Buompane, J. Busto, B. Caiffi, D. Calvo, A. Capone, F. Carenini, V. Carretero, T. Cartraud, P. Castaldi, V. Cecchini, S. Celli, L. Cerisy, M. Chabab, A. Chen, S. Cherubini, T. Chiarusi, M. Circella, R. Cocimano, J. A. B. Coelho, A. Coleiro, A. Condorelli, R. Coniglione, P. Coyle, A. Creusot, G. Cuttone, R. Dallier, A. De Benedittis, B. De Martino, G. De Wasseige, V. Decoene, I. Del Rosso, L. S. Di Mauro, I. Di Palma, A. F. Díaz, D. Diego-Tortosa, C. Distefano, A. Domi, C. Donzaud, D. Dornic, E. Drakopoulou, D. Drouhin, J. -G. Ducoin, R. Dvornický, T. Eberl, E. Eckerová, A. Eddymaoui, T. van Eeden, M. Eff, D. van Eijk, I. El Bojaddaini, S. El Hedri, V. Ellajosyula, A. Enzenhöfer, G. Ferrara, M. D. Filipović, F. Filippini, D. Franciotti, L. A. Fusco, S. Gagliardini, T. Gal, J. García Méndez, A. Garcia Soto, C. Gatius Oliver, N. Geißelbrecht, E. Genton, H. Ghaddari, L. Gialanella, B. K. Gibson, E. Giorgio, I. Goos, P. Goswami, S. R. Gozzini, R. Gracia, C. Guidi, B. Guillon, M. Gutiérrez, C. Haack, H. van Haren, A. Heijboer, L. Hennig, J. J. Hernández-Rey, W. Idrissi Ibnsalih, G. Illuminati, D. Joly, M. de Jong, P. de Jong, B. J. Jung, G. Kistauri, C. Kopper, A. Kouchner, Y. Y. Kovalev, V. Kueviakoe, V. Kulikovskiy, R. Kvatadze, M. Labalme, R. Lahmann, M. Lamoureux, G. Larosa, C. Lastoria, A. Lazo, S. Le Stum, G. Lehaut, V. Lemaítre, E. Leonora, N. Lessing, G. Levi, M. Lindsey Clark, F. Longhitano, F. Magnani, J. Majumdar, L. Malerba, F. Mamedov, J. Mańczak, A. Manfreda, M. Marconi, A. Margiotta, A. Marinelli, C. Markou, L. Martin, M. Mastrodicasa, S. Mastroianni, J. Mauro, G. Miele, P. Migliozzi, E. Migneco, M. L. Mitsou, C. M. Mollo, L. Morales-Gallegos, A. Moussa, I. Mozun Mateo, R. Muller, M. R. Musone, M. Musumeci, S. Navas, A. Nayerhoda, C. A. Nicolau, B. Nkosi, B. Ó Fearraigh, V. Oliviero, A. Orlando, E. Oukacha, D. Paesani, J. Palacios González, G. Papalashvili, V. Parisi, E. J. Pastor Gomez, A. M. Păun, G. E. Păvălaş, S. Peña Martínez, M. Perrin-Terrin, V. Pestel, R. Pestes, P. Piattelli, A. Plavin, C. Poirè, V. Popa, T. Pradier, J. Prado, S. Pulvirenti, C. A. Quiroz-Rangel, N. Randazzo, S. Razzaque, I. C. Rea, D. Real, G. Riccobene, J. Robinson, A. Romanov, E. Ros, A. Šaina, F. Salesa Greus, D. F. E. Samtleben, A. Sánchez Losa, S. Sanfilippo, M. Sanguineti, D. Santonocito, P. Sapienza, J. Schnabel, J. Schumann, H. M. Schutte, J. Seneca, I. Sgura, R. Shanidze, A. Sharma, Y. Shitov, F. Šimkovic, A. Simonelli, A. Sinopoulou, B. Spisso, M. Spurio, D. Stavropoulos, I. Štekl, S. M. Stellacci, M. Taiuti, Y. Tayalati, H. Thiersen, S. Thoudam, I. Tosta e Melo, B. Trocmé, V. Tsourapis, A. Tudorache, E. Tzamariudaki, A. Ukleja, A. Vacheret, V. Valsecchi, V. Van Elewyck, G. Vannoye, G. Vasileiadis, F. Vazquez de Sola, A. Veutro, S. Viola, D. Vivolo, A. van Vliet, E. de Wolf, I. Yvon, S. Zavatarelli, A. Zegarelli, D. Zito, J. D. Zornoza, J. Zúñiga, N. Zywucka
KM3NeT/ORCA is a water Cherenkov neutrino detector under construction and anchored at the bottom of the Mediterranean Sea. The detector is designed to study oscillations of atmospheric neutrinos and determine the neutrino mass ordering. This paper focuses on an initial configuration of ORCA, referred to as ORCA6, which comprises six out of the foreseen 115 detection units of photo-sensors. A high-purity neutrino sample was extracted, corresponding to an exposure of 433 kton-years. The sample of 5828 neutrino candidates is analysed following a binned log-likelihood method in the reconstructed energy and cosine of the zenith angle. The atmospheric oscillation parameters are measured to be $\sin^2θ_{23}= 0.51^{+0.04}_{-0.05}$, and $ Δm^2_{31} = 2.18^{+0.25}_{-0.35}\times 10^{-3}~\mathrm{eV^2} \cup \{-2.25,-1.76\}\times 10^{-3}~\mathrm{eV^2}$ at 68\% CL. The inverted neutrino mass ordering hypothesis is disfavoured with a p-value of 0.25.
Neutrino Oscillations and Non-standard Interactions with KM3NeT-ORCA
ORCA(Oscillations Research with Cosmics in the Abyss)是位于地中海的下一代水下切伦科夫中微子探测器KM 3 NeT的低能节点。KM 3 NeT-ORCA的主要目标是确定中微子质量排序(NMO)。在几个GeV的能量阈值和几个Mton的有效质量下,KM 3 NeT-ORCA也可以对大气振荡参数进行精确测量。此外,它可以获得广泛的能量和基线,这使得它最适合发现标准模型之外的奇异物理,如中微子的非标准相互作用(NSI)。探测器的中微子质量排序的灵敏度,以及其潜在的确定大气振荡参数。据观察,KM 3 NeT-ORCA将在三年的数据采集后将NSI参数的当前上限提高一个数量级。
Neutrino oscillation tomography of the Earth with KM3NeT-ORCA
KM 3 NeT-ORCA是一个水切伦科夫中微子探测器,设计用于研究大气中微子振荡,主要目标是测量中微子质量有序。穿过地球的大气中微子受到物质效应的影响,改变了它们的味道振荡模式。因此,对ORCA中中微子事件的角度和能量分布的研究可以提供关于地球内部的层析成像信息,这是对标准地球物理学方法的补充。基于探测器响应的完整蒙特卡罗模拟的初步估计表明,经过十年的运行,电子密度可以在地幔中以3-5%的精度测量,在外核中以7-10%的精度测量-取决于质量排序。
Search for an eV-scale sterile neutrino with the first six detection units of KM3NeT/ORCA
Università di Firenze(佛罗伦萨大学);INFN, Sezione di Firenze(意大利国家核物理研究所佛罗伦萨分部);Université de Strasbourg(斯特拉斯堡大学);CNRS, IPHC UMR 7178(法国国家科学研究中心高能物理研究所);Université de Haute Alsace(上阿尔萨斯大学);Khalifa University of Science and Technology(哈利法科学技术大学);Aix Marseille Univ, CNRS/IN2P3, CPPM(艾克斯-马赛大学,法国国家科学研究中心/欧洲粒子物理研究所,粒子物理中心);IFIC - Instituto de Física Corpuscular (CSIC - Universitat de València)(基本粒子物理研究所(瓦伦西亚大学与西班牙高等科学研究理事会));INFN, Sezione di Roma(意大利国家核物理研究所罗马分部);Universitat Politècnica de Catalunya(加泰罗尼亚理工大学);Subatech, IMT Atlantique, IN2P3-CNRS, Nantes Université(南特大学亚原子物理与技术实验室,大西洋理工学院,法国国家科学研究中心/欧洲粒子物理研究所);Universitat Politècnica de València(瓦伦西亚理工大学)
Atmospheric neutrinos with the first detection units of KM3NeT/ARCA
KM 3 NeT合作正在地中海建造两个深海切伦科夫探测器。ARCA探测器的目标是TeV-PeV中微子天文学,而ORCA探测器则是针对几个GeV能量的大气中微子振荡研究而优化的。在这方面的贡献,与第一次部署的检测单元的ARCA探测器收集的数据进行了分析。选择了一个高纯度的大气中微子样品,证明了ARCA探测器的能力。
Improved precision on 2-3 oscillation parameters using the synergy between DUNE and T2HK
Institute of Physics(印度物理研究所);Homi Bhabha National Institute(霍米·巴巴国立学院);Department of Physics & Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison(威斯康星大学麦迪逊分校物理系与威斯康星冰立方粒子天体物理中心);Department of Physics, Utkal University(乌塔卡尔大学物理系)
When CPT Violation Hides in Plain Sight: How CP Measurements Are Compromised and How to Fix Them
Harvard University(哈佛大学);Instituto de Física Corpuscular, CSIC-Universitat de València(瓦伦西亚大学-CSIC粒子物理研究所);Universitat de València(瓦伦西亚大学);Universidade de Santiago de Compostela(圣地亚哥-德孔波斯特拉大学);Durham University(杜伦大学)
Quantifying Information Hierarchy for Neutrino Oscillation Parameters at JUNO
Institute of High Energy Physics, Chinese Academy of Sciences(中国科学院高能物理研究所);University of Chinese Academy of Sciences(中国科学院大学);Kaiping Neutrino Research Center(开平中微子研究中心)