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The T2K experiment is a long-baseline accelerator neutrino experiment using a near detector complex ND280 and a far detector, Super-Kamiokande. Neutrino interactions are detected by Cherenkov light in Super-Kamiokande in order to measure…

High Energy Physics - Experiment · Physics 2019-08-14 L. Haegel

Tokai to Kamioka (T2K) is a long-baseline neutrino oscillation experiment that measures oscillation parameters related to both $\nu_\mu(\bar{\nu}_\mu)$ disappearance and $\nu_e(\bar{\nu}_e)$ appearance in a $\nu_\mu(\bar{\nu}_\mu)$ beam.…

High Energy Physics - Experiment · Physics 2025-01-03 Michael Reh

The T2K experiment is designed to study neutrino oscillation properties by directing a high intensity neutrino beam produced at J-PARC in Tokai, Japan, towards the large Super-Kamiokande detector located 295 km away, in Kamioka, Japan. The…

Instrumentation and Detectors · Physics 2015-03-17 T2K ND280 TPC collaboration

The T2K long-baseline neutrino oscillation experiment has produced the first observation of $\nu_{e}$ appearance and the most precise measurement of the mixing angle $\theta_{23}$ from $6.57 \times 10^{20}$ protons-on-target (POT) of…

High Energy Physics - Experiment · Physics 2019-08-14 Mark Scott

Oki Island is located between Japan and Korea along the Tokai-To-Kamioka (T2K) baseline. The distance from J-PARC to Oki Island is about 653km, which is twice that of the T2K experiment (L=295km). When the off-axis angle of the neutrino…

High Energy Physics - Phenomenology · Physics 2015-06-11 Kaoru Hagiwara , Takayuki Kiwanami , Naotoshi Okamura , Ken-ichi Senda

In Japan, as the first experiment utilizes J-PARC (Japan Proton Accelerator Research Complex) neutrino facility, T2K (Tokai to Kamioka Long Baseline Neutrino Experiment) starts operation. T2K is supposed to give critical information, which…

High Energy Physics - Experiment · Physics 2010-01-05 Takuya Hasegawa

The first results of the K2K(KEK to Kamioka) long-baseline neutrino oscillation experiment are presented in this talk. In 1999 7.2x10^18 protons on target were delivered to the experiment. During this period of running there were 3 events…

High Energy Physics - Experiment · Physics 2015-06-25 Taku Ishida

The T2K neutrino oscillation experiment will start in 2009. In this experiment the center of the neutrino beam from J-PARC at Tokai village will go through underground beneath Super-Kamiokande, reach the sea level east of Korean shore, and…

High Energy Physics - Phenomenology · Physics 2010-11-11 Kaoru Hagiwara , Naotoshi Okamura , Ken-ichi Senda

A long-baseline neutrino-oscillation experiment using a well-defined neutrino beam is in preparation at KEK. Neutrinos generated at KEK will be detected by the Super-kamiokande detector 250 km away. The design of the neutrino beam line,…

High Energy Physics - Experiment · Physics 2009-09-25 Yuichi Oyama

T2K reports its first measurements of the parameters governing the disappearance of $\bar{\nu}_\mu$ in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic $\bar{\nu}_\mu$ beam, produced with a peak…

High Energy Physics - Experiment · Physics 2016-05-17 T2K collaboration , K. Abe , C. Andreopoulos , M. Antonova , S. Aoki , A. Ariga , S. Assylbekov , D. Autiero , M. Barbi , G. J. Barker , G. Barr , P. Bartet-Friburg , M. Batkiewicz , F. Bay , V. Berardi , S. Berkman , S. Bhadra , A. Blondel , S. Bolognesi , S. Bordoni , S. B. Boyd , D. Brailsford , A. Bravar , C. Bronner , M. Buizza Avanzini , R. G. Calland , S. Cao , J. Caravaca Rodríguez , S. L. Cartwright , R. Castillo , M. G. Catanesi , A. Cervera , D. Cherdack , N. Chikuma , G. Christodoulou , A. Clifton , J. Coleman , G. Collazuol , L. Cremonesi , A. Dabrowska , G. De Rosa , T. Dealtry , P. F. Denner , S. R. Dennis , C. Densham , D. Dewhurst , F. Di Lodovico , S. Di Luise , S. Dolan , O. Drapier , K. E. Duffy , J. Dumarchez , S. Dytman , M. Dziewiecki , S. Emery-Schrenk , A. Ereditato , T. Feusels , A. J. Finch , G. A. Fiorentini , M. Friend , Y. Fujii , D. Fukuda , Y. Fukuda , A. P. Furmanski , V. Galymov , A. Garcia , S. G. Giffin , C. Giganti , F. Gizzarelli , M. Gonin , N. Grant , D. R. Hadley , L. Haegel , M. D. Haigh , P. Hamilton , D. Hansen , T. Hara , M. Hartz , T. Hasegawa , N. C. Hastings , T. Hayashino , Y. Hayato , R. L. Helmer , M. Hierholzer , A. Hillairet , A. Himmel , T. Hiraki , S. Hirota , M. Hogan , J. Holeczek , S. Horikawa , F. Hosomi , K. Huang , A. K. Ichikawa , K. Ieki , M. Ikeda , J. Imber , J. Insler , R. A. Intonti , T. J. Irvine , T. Ishida , T. Ishii , E. Iwai , K. Iwamoto , A. Izmaylov , A. Jacob , B. Jamieson , M. Jiang , S. Johnson , J. H. Jo , P. Jonsson , C. K. Jung , M. Kabirnezhad , A. C. Kaboth , T. Kajita , H. Kakuno , J. Kameda , D. Karlen , I. Karpikov , T. Katori , E. Kearns , M. Khabibullin , A. Khotjantsev , D. Kielczewska , T. Kikawa , H. Kim , J. Kim , S. King , J. Kisiel , A. Knight , A. Knox , T. Kobayashi , L. Koch , T. Koga , A. Konaka , K. Kondo , A. Kopylov , L. L. Kormos , A. Korzenev , Y. Koshio , W. Kropp , Y. Kudenko , R. Kurjata , T. Kutter , J. Lagoda , I. Lamont , E. Larkin , M. Laveder , M. Lawe , M. Lazos , T. Lindner , Z. J. Liptak , R. P. Litchfield , X. Li , A. Longhin , J. P. Lopez , L. Ludovici , X. Lu , L. Magaletti , K. Mahn , M. Malek , S. Manly , A. D. Marino , J. Marteau , J. F. Martin , P. Martins , S. Martynenko , T. Maruyama , V. Matveev , K. Mavrokoridis , W. Y. Ma , E. Mazzucato , M. McCarthy , N. McCauley , K. S. McFarland , C. McGrew , A. Mefodiev , M. Mezzetto , P. Mijakowski , A. Minamino , O. Mineev , S. Mine , A. Missert , M. Miura , S. Moriyama , Th. A. Mueller , S. Murphy , J. Myslik , T. Nakadaira , M. Nakahata , K. G. Nakamura , K. Nakamura , K. D. Nakamura , S. Nakayama , T. Nakaya , K. Nakayoshi , C. Nantais , C. Nielsen , M. Nirkko , K. Nishikawa , Y. Nishimura , J. Nowak , H. M. O'Keeffe , R. Ohta , K. Okumura , T. Okusawa , W. Oryszczak , S. M. Oser , T. Ovsyannikova , R. A. Owen , Y. Oyama , V. Palladino , J. L. Palomino , V. Paolone , N. D. Patel , M. Pavin , D. Payne , J. D. Perkin , Y. Petrov , L. Pickard , L. Pickering , E. S. Pinzon Guerra , C. Pistillo , B. Popov , M. Posiadala-Zezula , J. -M. Poutissou , R. Poutissou , P. Przewlocki , B. Quilain , E. Radicioni , P. N. Ratoff , M. Ravonel , M. A. M. Rayner , A. Redij , E. Reinherz-Aronis , C. Riccio , P. Rojas , E. Rondio , S. Roth , A. Rubbia , A. Rychter , R. Sacco , K. Sakashita , F. Sánchez , F. Sato , E. Scantamburlo , K. Scholberg , S. Schoppmann , J. Schwehr , M. Scott , Y. Seiya , T. Sekiguchi , H. Sekiya , D. Sgalaberna , R. Shah , A. Shaikhiev , F. Shaker , D. Shaw , M. Shiozawa , T. Shirahige , S. Short , M. Smy , J. T. Sobczyk , M. Sorel , L. Southwell , P. Stamoulis , J. Steinmann , T. Stewart , Y. Suda , S. Suvorov , A. Suzuki , K. Suzuki , S. Y. Suzuki , Y. Suzuki , R. Tacik , M. Tada , S. Takahashi , A. Takeda , Y. Takeuchi , H. K. Tanaka , H. A. Tanaka , D. Terhorst , R. Terri , T. Thakore , L. F. Thompson , S. Tobayama , W. Toki , T. Tomura , C. Touramanis , T. Tsukamoto , M. Tzanov , Y. Uchida , A. Vacheret , M. Vagins , Z. Vallari , G. Vasseur , T. Wachala , K. Wakamatsu , C. W. Walter , D. Wark , W. Warzycha , M. O. Wascko , A. Weber , R. Wendell , R. J. Wilkes , M. J. Wilking , C. Wilkinson , J. R. Wilson , R. J. Wilson , Y. Yamada , K. Yamamoto , M. Yamamoto , C. Yanagisawa , T. Yano , S. Yen , N. Yershov , M. Yokoyama , J. Yoo , K. Yoshida , T. Yuan , M. Yu , A. Zalewska , J. Zalipska , L. Zambelli , K. Zaremba , M. Ziembicki , E. D. Zimmerman , M. Zito , J. Żmuda

The K2K experiment observes indications of neutrino oscillation: a reduction of $\nu_\mu$ flux together with a distortion of the energy spectrum. Fifty-six beam neutrino events are observed in Super-Kamiokande (SK), 250 km from the neutrino…

High Energy Physics - Experiment · Physics 2009-09-29 K2K Collaboration , M. H. Ahn

The T2K long-baseline neutrino oscillation experiment in Japan continues to lead the search for leptonic charge-parity violation while providing precision measurements of mixing and mass splitting parameters. Central to this programme is…

High Energy Physics - Experiment · Physics 2026-04-10 Nick Latham

T2K is a long baseline neutrino experiment which exploits a neutrino and antineutrino beam at JPARC to perform precision measurements of neutrino oscillation parameters $\Delta {\rm m}^2_{\rm 32}$, $\sin^2 \theta_{23}$ (besides the…

High Energy Physics - Experiment · Physics 2022-07-15 Ajmi Ali

As measurements of the neutrino oscillation parameters improve it is becoming more interesting to study antineutrino oscillations, to investigate CP and CPT violation in the lepton sector and nonstandard matter effects. We present the most…

High Energy Physics - Experiment · Physics 2016-07-13 Kirsty Duffy

The T2K long-baseline neutrino-oscillationexperiment was started in January 2010 for the purpose of physics data-taking. Until the massive earthquake on March 11, 2011 in Japan, $1.43\times 10^{20}$ pot data were accumulated. In this data,…

High Energy Physics - Experiment · Physics 2019-08-14 Yuichi Oyama

The ``baseline setup'' for a possible, beyond T2K, next generation long baseline experiment along the J-PARC neutrino beam produced at Tokai, assumes two very large deep-underground Water Cerenkov imaging detectors of about 300 kton…

High Energy Physics - Phenomenology · Physics 2008-01-29 A. Meregaglia , A. Rubbia

As limits improve on the neutrino mixing angles and mass-squared differences, the focus of T2K has shifted towards studying antineutrino oscillation. This will give an insight into CP violation (if P($\bar{\nu}_{\mu} \rightarrow…

High Energy Physics - Experiment · Physics 2016-05-06 Kirsty Duffy

The KEK-to-Kamioka long-baseline neutrino experiment (K2K) has begun its investigation of neutrino oscillation, and has established the method of a long-baseline neutrino experiment. From the first 100 days of data-taking, a deficit of muon…

High Energy Physics - Experiment · Physics 2007-05-23 Takanobu Ishii

The KEK to Kamioka long-baseline neutrino experiment (K2K) has begun its investigation of neutrino oscillations suggested by atmospheric neutrino observations. Twenty-eight neutrino events have been detected in coincidence with the expected…

High Energy Physics - Experiment · Physics 2008-11-26 The K2K Collaboration , S. H. Ahn

The latest oscillation results obtained in the off-axis accelerator neutrino experiment T2K are presented. In the data sample, corresponding to 1.43 x 10^20 protons on target, 6 electron neutrino candidate events pass the selection…

High Energy Physics - Experiment · Physics 2019-08-14 Marat Khabibullin