J. Argyriades

University of Geneva

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Co-Authors

T. Hasegawa

High Energy Accelerator Research Organization

T. Nakadaira

High Energy Accelerator Research Organization

D. Kiełczewska

University of Warsaw

V. Matveev

Institute for Nuclear Research

A. Blondel

University of Geneva

P. Novella

Instituto de Física Corpuscular

Y. Fukuda

Miyagi University of Education

C. W. Walter

Duke University

M. Nakahata

The University of Tokyo

A. Cervera

Universitat de València

Cooperative Institutions

University of California, Irvine

201

The University of Tokyo

201

Boston University

196

Centre National de la Recherche Scientifique

191

University of Alberta

183

Institute of Particle Physics

170

Colorado State University

137

Duke University

130

Chonnam National University

126

High Energy Accelerator Research Organization

122

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Measurement of neutrino oscillation by the K2K experiment

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology (2006)

Myunggeun Ahn E. Aliu S. Andringa S. Aoki Yuya Aoyama

We present measurements of nu_mu disappearance in K2K, the KEK to Kamioka long-baseline neutrino oscillation experiment. One hundred and twelve beam-originated neutrino events are observed in the fiducial volume of Super-Kamiokande with an expectation of 158.1^{+9.2}_{-8.6} events without oscillation. A distortion of the energy spectrum is also seen in 58 single-ring muon-like events with reconstructed energies. The probability that the observations are explained by the expectation for no neutrino oscillation is 0.0015% (4.3sigma). In a two flavor oscillation scenario, the allowed Delta m^2 region at sin^2(2theta) is between 1.9 and 3.5 x 10^{-3} eV^2 at the 90% C.L. with a best-fit value of 2.8 x 10^{-3} eV^2.

10.1103/physrevd.74.072003

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Citations (640)

Measurement of production properties of positively charged kaons in proton-carbon interactions at 31 GeV/c

Physical Review C (2012)

N. Abgrall A. Aduszkiewicz T. Anticic N. G. Antoniou J. Argyriades

Spectra of positively charged kaons in p+C interactions at 31 GeV/c were measured with the NA61/SHINE spectrometer at the CERN SPS. The analysis is based on the full set of data collected in 2007 with a graphite target with a thickness of 4% of a nuclear interaction length. Interaction cross sections and charged pion spectra were already measured using the same set of data. These new measurements in combination with the published ones are required to improve predictions of the neutrino flux for the T2K long baseline neutrino oscillation experiment in Japan. In particular, the knowledge of kaon production is crucial for precisely predicting the intrinsic electron neutrino component and the high energy tail of the T2K beam. The results are presented as a function of laboratory momentum in 2 intervals of the laboratory polar angle covering the range from 20 up to 240 mrad. The kaon spectra are compared with predictions of several hadron production models. Using the published pion results and the new kaon data, the K+/\pi+ ratios are computed.

10.1103/physrevc.85.035210

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Citations (97)

Measurement of the two neutrino double beta decay half-life of Zr-96 with the NEMO-3 detector

Nuclear Physics A (2010)

J. Argyriades R. Arnold C. Augier Joy Don Baker A. S. Barabash

Beta decay

Half-life

Matrix element

BETA (programming language)

Electron neutrino

10.1016/j.nuclphysa.2010.07.009

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Citations (119)

The T2K experiment

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment (2011)

K. Abe N. Abgrall H. Aihara Y. Ajima J. B. Albert

The T2K experiment is a long baseline neutrino oscillation experiment. Its main goal is to measure the last unknown lepton sector mixing angle θ13 by observing νe appearance in a νμ beam. It also aims to make a precision measurement of the known oscillation parameters, Δm232 and sin22θ23, via νμ disappearance studies. Other goals of the experiment include various neutrino cross-section measurements and sterile neutrino searches. The experiment uses an intense proton beam generated by the J-PARC accelerator in Tokai, Japan, and is composed of a neutrino beamline, a near detector complex (ND280), and a far detector (Super-Kamiokande) located 295 km away from J-PARC. This paper provides a comprehensive review of the instrumentation aspect of the T2K experiment and a summary of the vital information for each subsystem.

J-PARC

Instrumentation

10.1016/j.nima.2011.06.067

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Citations (728)

Improved Search forνμ→νeOscillation in a Long-Baseline Accelerator Experiment

Physical Review Letters (2006)

S. Yamamoto J. Zalipska E. Aliu S. Andringa S. Aoki

We performed an improved search for ${\ensuremath{\nu}}_{\ensuremath{\mu}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{e}$ oscillation with the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment, using the full data sample of $9.2\ifmmode\times\else\texttimes\fi{}{10}^{19}$ protons on target. No evidence for a ${\ensuremath{\nu}}_{e}$ appearance signal was found, and we set bounds on the ${\ensuremath{\nu}}_{\ensuremath{\mu}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{e}$ oscillation parameters. At $\ensuremath{\Delta}{m}^{2}=2.8\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}\text{ }\text{ }{\mathrm{eV}}^{2}$, the best-fit value of the K2K ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ disappearance analysis, we set an upper limit of ${sin}^{2}2{\ensuremath{\theta}}_{\ensuremath{\mu}e}<0.13$ at a 90% confidence level.

Oscillation (cell signaling)

10.1103/physrevlett.96.181801

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Citations (50)

Evidence for Muon Neutrino Oscillation in an Accelerator-Based Experiment

Physical Review Letters (2005)

E. Aliu S. Andringa S. Aoki J. Argyriades K. Asakura

We present results for ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ oscillation in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment. K2K uses an accelerator-produced ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ beam with a mean energy of 1.3 GeV directed at the Super-Kamiokande detector. We observed the energy-dependent disappearance of ${\ensuremath{\nu}}_{\ensuremath{\mu}}$, which we presume have oscillated to ${\ensuremath{\nu}}_{\ensuremath{\tau}}$. The probability that we would observe these results if there is no neutrino oscillation is 0.0050% ($4.0\ensuremath{\sigma}$).

Muon neutrino

Oscillation (cell signaling)

10.1103/physrevlett.94.081802

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Citations (450)

Measurement of single charged pion production in the charged-current interactions of neutrinos in a 1.3 GeV wide band beam

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology (2008)

A. Rodriguez L. Whitehead J. L. Alcaraz S. Andringa S. Aoki

Single charged pion production in charged-current muon neutrino interactions with carbon is studied using data collected in the K2K long-baseline neutrino experiment. The mean energy of the incident muon neutrinos is 1.3 GeV. The data used in this analysis are mainly from a fully active scintillator detector, SciBar. The cross section for single π+ production in the resonance region (W<2 GeV/c2) relative to the charged-current quasielastic cross section is found to be 0.734−0.153+0.140. The energy-dependent cross section ratio is also measured. The results are consistent with a previous experiment and the prediction of our model.5 MoreReceived 5 May 2008DOI:https://doi.org/10.1103/PhysRevD.78.032003©2008 American Physical Society

Charged current

Muon neutrino

10.1103/physrevd.78.032003

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Citations (43)

23aZQ-8 BiPo検出器、プロトタイプの性能評価(実験核物理領域,理論核物理領域,素粒子実験領域,素粒子論領域,宇宙線・宇宙物理領域合同講演,二重ベータ崩壊・暗黒物質探索(合同)(二重ベータ崩壊),実験核物理領域)

日本物理学会講演概要集 (2008)

真也金丸 S. Umehara 篤史浦野聖基阪田達志嶋

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Pion emission from the T2K replica target: Method, results and application