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69 69

The T2K ND280 Off-Axis Pi-Zero Detector

Sep 23, 2013 09/13

by S. Assylbekov; B. E. Berger; H. Berns; D. Beznosko; A. Bodek; R. Bradford; N. Buchanan; H. Budd; Y. Caffari; K. Connolly; I. Danko; R. Das; S. Davis; M. Day; S. Dytman; M. Dziomba; R. Flight; D. Forbush; K. Gilje; D. Hansen; J. Hignight; J. Imber; R. A. Johnson; C. K. Jung; V. Kravtsov; P. T. Le; G. D. Lopez; C. J. Malafis; S. Manly; A. D. Marino; K. S. McFarland; C. McGrew; C. Metelko; G. Nagashima; D. Naples; B. Nielsen; V. Paolone; P. Paul; W. Qian; K. Ramos; P. A. Rodrigues; D. Ruterbories;...

eye 69

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The Pi-Zero detector (P{\O}D) is one of the subdetectors that makes up the off-axis near detector for the Tokai-to-Kamioka (T2K) long baseline neutrino experiment. The primary goal for the P{\O}D is to measure the relevant cross sections for neutrino interactions that generate pi-zero's, especially the cross section for neutral current pi-zero interactions, which are one of the dominant sources of background to the electron neutrino appearance signal in T2K. The P{\O}D is composed of layers of...
Source: http://arxiv.org/abs/1111.5030v2

Arxiv.org

30 30

Background Radiation Measurements at High Power Research Reactors

Jun 27, 2018 06/18

by J. Ashenfelter; B. Balantekin; C. X. Baldenegro; H. R. Band; G. Barclay; C. D. Bass; D. Berish; N. S. Bowden; C. D. Bryan; J. J. Cherwinka; R. Chu; T. Classen; D. Davee; D. Dean; G. Deichert; M. J. Dolinski; J. Dolph; D. A. Dwyer; S. Fan; J. K. Gaison; A. Galindo-Uribarri; K. Gilje; A. Glenn; M. Green; K. Han; S. Hans; K. M. Heeger; B. Heffron; D. E. Jaffe; S. Kettell; T. J. Langford; B. R. Littlejohn; D. Martinez; R. D. McKeown; S. Morrell; P. E. Mueller; H. P. Mumm; J. Napolitano; D. Norcini;...

eye 30

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Research reactors host a wide range of activities that make use of the intense neutron fluxes generated at these facilities. Recent interest in performing measurements with relatively low event rates, e.g. reactor antineutrino detection, at these facilities necessitates a detailed understanding of background radiation fields. Both reactor-correlated and naturally occurring background sources are potentially important, even at levels well below those of importance for typical activities. Here we...
Topics: Instrumentation and Detectors, Physics, Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1506.03547

Arxiv.org

16 16

Light Collection and Pulse-Shape Discrimination in Elongated Scintillator Cells for the PROSPECT Reactor Antineutrino Experiment

Jun 28, 2018 06/18

by J. Ashenfelter; B. Balantekin; H. R. Band; G. Barclay; C. D. Bass; D. Berish; N. S. Bowden; A. Bowes; J. P. Brodsky; C. D. Bryan; J. J. Cherwinka; R. Chu; T. Classen; K. Commeford; D. Davee; D. Dean; G. Deichert; M. V. Diwan; M. J. Dolinski; J. Dolph; D. A. Dwyer; J. K. Gaison; A. Galindo-Uribarri; K. Gilje; A. Glenn; B. W. Goddard; M. Green; K. Han; S. Hans; K. M. Heeger; B. Heffron; D. E. Jaffe; T. J. Langford; B. R. Littlejohn; D. A. Martinez Caicedo; R. D. McKeown; M. P. Mendenhall; P....

eye 16

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A meter-long, 23-liter EJ-309 liquid scintillator detector has been constructed to study the light collection and pulse-shape discrimination performance of elongated scintillator cells for the PROSPECT reactor antineutrino experiment. The magnitude and uniformity of light collection and neutron/gamma discrimination power in the energy range of antineutrino inverse beta decay products have been studied using gamma and spontaneous fission calibration sources deployed along the cell long axis. We...
Topics: Instrumentation and Detectors, Physics, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1508.06575

Arxiv.org

9 9.0

The PROSPECT Physics Program

Jun 28, 2018 06/18

by J. Ashenfelter; B. Balantekin; H. R. Band; G. Barclay; C. D. Bass; D. Berish; N. S. Bowden; A. Bowes; C. D. Bryan; J. P. Brodsky; J. J. Cherwinka; R. Chu; T. Classen; K. Commeford; D. Davee; D. Dean; G. Deichert; M. V. Diwan; M. J. Dolinski; J. Dolph; J. K. Gaison; A. Galindo-Uribarri; K. Gilje; A. Glenn; B. W. Goddard; M. Green; K. Han; S. Hans; K. M. Heeger; B. Heffron; D. E. Jaffe; D. Jones; T. J. Langford; B. R. Littlejohn; D. A. Martinez Caicedo; R. D. McKeown; M. P. Mendenhall; P....

eye 9

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The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, is designed to make a precise measurement of the antineutrino spectrum from a highly-enriched uranium reactor and probe eV-scale sterile neutrinos by searching for neutrino oscillations over meter-long distances. PROSPECT is conceived as a 2-phase experiment utilizing segmented $^6$Li-doped liquid scintillator detectors for both efficient detection of reactor antineutrinos through the inverse beta decay reaction and excellent...
Topics: High Energy Physics - Experiment, Instrumentation and Detectors, Nuclear Experiment, Physics
Source: http://arxiv.org/abs/1512.02202

Arxiv.org

7 7.0

$Measurement of the inclusive $\nu_{\mu}$ charged current cross section on iron and hydrocarbon in the T2K on-axis neutrino beam$

Measurement of the inclusive $\nu_{\mu}$ charged current cross section on iron and hydrocarbon in the T2K on-axis neutrino beam

Jun 30, 2018 06/18

by The T2K Collaboration; K. Abe; J. Adam; H. Aihara; T. Akiri; C. Andreopoulos; S. Aoki; A. Ariga; S. Assylbekov; D. Autiero; M. Barbi; K. Ieki; M. Ieva; M. Ikeda; J. Imber; J. Insler; T. J. Irvine; T. Ishida; T. Ishii; E. Iwai; K. Iwamoto; G. J. Barker; K. Iyogi; A. Izmaylov; A. Jacob; B. Jamieson; R. A. Johnson; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; G. Barr; T. Kajita; H. Kakuno; J. Kameda; Y. Kanazawa; D. Karlen; I. Karpikov; T. Katori; E. Kearns; M. Khabibullin; A....

eye 7

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We report a measurement of the $\nu_\mu$ inclusive charged current cross sections on iron and hydrocarbon in the T2K on-axis neutrino beam. The measured inclusive charged current cross sections on iron and hydrocarbon averaged over the T2K on-axis flux with a mean neutrino energy of 1.51 GeV are $(1.444\pm0.002(stat.)_{-0.157}^{+0.189}(syst.))\times 10^{-38}\mathrm{cm}^2/\mathrm{nucleon}$, and $(1.379\pm0.009(stat.)_{-0.147}^{+0.178}(syst.))\times 10^{-38}\mathrm{cm}^2/\mathrm{nucleon}$,...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1407.4256

Arxiv.org

20 20

Measurement of the muon neutrino inclusive charged-current cross section in the energy range of 1-3 GeV with the T2K INGRID detector

Jun 28, 2018 06/18

by T2K Collaboration; K. Abe; C. Andreopoulos; M. Antonova; S. Aoki; A. Ariga; S. Assylbekov; D. Autiero; M. Barbi; G. J. Barker; G. Barr; K. Iwamoto; A. Izmaylov; A. Jacob; B. Jamieson; M. Jiang; S. Johnson; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; P. Bartet-Friburg; A. C. Kaboth; T. Kajita; H. Kakuno; J. Kameda; D. Karlen; I. Karpikov; T. Katori; E. Kearns; M. Khabibullin; A. Khotjantsev; M. Batkiewicz; D. Kielczewska; T. Kikawa; H. Kim; J. Kim; S. King; J. Kisiel; T. Kobayashi; L....

eye 20

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We report a measurement of the $\nu_{\mu}$-nucleus inclusive charged current cross section (=$\sigma^{cc}$) on iron using data from exposed to the J-PARC neutrino beam. The detector consists of 14 modules in total, which are spread over a range of off-axis angles from 0$^\circ$ to 1.1$^\circ$. The variation in the neutrino energy spectrum as a function of the off-axis angle, combined with event topology information, is used to calculate this cross section as a function of neutrino energy. The...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1509.06940

Arxiv.org

12 12

Measurement of the Inclusive Electron Neutrino Charged Current Cross Section on Carbon with the T2K Near Detector

Jun 30, 2018 06/18

by K. Abe; J. Adam; H. Aihara; T. Akiri; C. Andreopoulos; S. Aoki; A. Ariga; S. Assylbekov; D. Autiero; M. Barbi; G. J. Barker; M. Ieva; M. Ikeda; J. Imber; J. Insler; T. J. Irvine; T. Ishida; T. Ishii; E. Iwai; K. Iwamoto; K. Iyogi; G. Barr; A. Izmaylov; A. Jacob; B. Jamieson; R. A. Johnson; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; T. Kajita; M. Bass; H. Kakuno; J. Kameda; Y. Kanazawa; D. Karlen; I. Karpikov; T. Katori; E. Kearns; M. Khabibullin; A. Khotjantsev; D....

eye 12

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The T2K off-axis near detector, ND280, is used to make the first differential cross-section measurements of electron neutrino charged current interactions at energies ~1 GeV as a function of electron momentum, electron scattering angle and four-momentum transfer of the interaction. The total flux-averaged $\nu_e$ charged current cross-section on carbon is measured to be $1.11\pm0.09~(stat)\pm0.18~(syst)\times10^{-38} cm^2/nucleon$. The differential and total cross-section measurements agree...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1407.7389

Arxiv.org

5 5.0

First Measurement of the Muon Neutrino Charged Current Single Pion Production Cross Section on Water with the T2K Near Detector

Jun 29, 2018 06/18

by T2K Collaboration; K. Abe; C. Andreopoulos; M. Antonova; S. Aoki; A. Ariga; S. Assylbekov; D. Autiero; S. Ban; M. Barbi; G. J. Barker; K. Ieki; M. Ikeda; J. Imber; J. Insler; R. A. Intonti; T. J. Irvine; T. Ishida; T. Ishii; E. Iwai; K. Iwamoto; G. Barr; A. Izmaylov; A. Jacob; B. Jamieson; M. Jiang; S. Johnson; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; P. Bartet-Friburg; T. Kajita; H. Kakuno; J. Kameda; D. Karlen; I. Karpikov; T. Katori; E. Kearns; M. Khabibullin; A....

eye 5

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The T2K off-axis near detector, ND280, is used to make the first differential cross section measurements of muon neutrino charged current single positive pion production on a water target at energies ${\sim}0.8$ GeV. The differential measurements are presented as a function of muon and pion kinematics, in the restricted phase-space defined by $p_{\pi^+}>200$MeV/c, $p_{\mu^-}>200$MeV/c, $\cos \theta_{\pi^+}>0.3$ and $\cos \theta_{\mu^-}>0.3$. The total flux integrated $\nu_\mu$...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1605.07964

Arxiv.org

5 5.0

$Precise Measurement of the Neutrino Mixing Parameter \theta_{23} from Muon Neutrino Disappearance in an Off-axis Beam$

Precise Measurement of the Neutrino Mixing Parameter \theta_{23} from Muon Neutrino Disappearance in an Off-axis Beam

Jun 30, 2018 06/18

by T2K Collaboration; K. Abe; J. Adam; H. Aihara; T. Akiri; C. Andreopoulos; S. Aoki; A. Ariga; T. Ariga; S. Assylbekov; D. Autiero; J. Holeczek; S. Horikawa; K. Huang; A. K. Ichikawa; K. Ieki; M. Ieva; M. Ikeda; J. Imber; J. Insler; T. J. Irvine; M. Barbi; T. Ishida; T. Ishii; S. J. Ives; E. Iwai; K. Iyogi; A. Izmaylov; A. Jacob; B. Jamieson; R. A. Johnson; J. H. Jo; G. J. Barker; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; T. Kajita; H. Kakuno; J. Kameda; Y. Kanazawa; D. Karlen; I....

eye 5

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New data from the T2K neutrino oscillation experiment produce the most precise measurement of the neutrino mixing parameter theta_{23}. Using an off-axis neutrino beam with a peak energy of 0.6 GeV and a data set corresponding to 6.57 x 10^{20} protons on target, T2K has fit the energy-dependent nu_mu oscillation probability to determine oscillation parameters. Marginalizing over the values of other oscillation parameters yields sin^2 (theta_{23}) = 0.514 +0.055/-0.056 (0.511 +- 0.055),...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1403.1532

Arxiv.org

71 71

The T2K Neutrino Flux Prediction

Sep 18, 2013 09/13

by T2K Collaboration; K. Abe; N. Abgrall; H. Aihara; T. Akiri; J. B. Albert; C. Andreopoulos; S. Aoki; A. Ariga; T. Ariga; S. Assylbekov; D. Autiero; M. Barbi; G. J. Barker; G. Barr; M. Bass; M. Batkiewicz; F. Bay; S. W. Bentham; V. Berardi; B. E. Berger; S. Berkman; I. Bertram; D. Beznosko; S. Bhadra; F. d. M. Blaszczyk; A. Blondel; C. Bojechko; S. Boyd; A. Bravar; C. Bronner; D. G. Brook-Roberge; N. Buchanan; R. G. Calland; J. Caravaca Rodriguez; S. L. Cartwright; R. Castillo; M. G. Catanesi; A....

eye 71

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The Tokai-to-Kamioka (T2K) experiment studies neutrino oscillations using an off-axis muon neutrino beam with a peak energy of about 0.6 GeV that originates at the J-PARC accelerator facility. Interactions of the neutrinos are observed at near detectors placed at 280 m from the production target and at the far detector -- Super-Kamiokande (SK) -- located 295 km away. The flux prediction is an essential part of the successful prediction of neutrino interaction rates at the T2K detectors and is...
Source: http://arxiv.org/abs/1211.0469v3

Arxiv.org

11 11

$Search for short baseline $\nu_e$ disappearance with the T2K near detector$

Search for short baseline $\nu_e$ disappearance with the T2K near detector

Jun 30, 2018 06/18

by K. Abe; J. Adam; H. Aihara; T. Akiri; C. Andreopoulos; S. Aoki; A. Ariga; S. Assylbekov; D. Autiero; M. Barbi; G. J. Barker; K. Huang; A. K. Ichikawa; K. Ieki; M. Ieva; M. Ikeda; J. Imber; J. Insler; T. J. Irvine; T. Ishida; T. Ishii; G. Barr; E. Iwai; K. Iwamoto; K. Iyogi; A. Izmaylov; A. Jacob; B. Jamieson; M. Jiang; S. Johnson; J. H. Jo; P. Jonsson; M. Bass; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; T. Kajita; H. Kakuno; J. Kameda; Y. Kanazawa; D. Karlen; I. Karpikov; T. Katori; M....

eye 11

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The T2K experiment has performed a search for $\nu_e$ disappearance due to sterile neutrinos using $5.9 \times 10^{20}$ protons on target for a baseline of $280 m$ in a neutrino beam peaked at about $500 MeV$. A sample of \nu_e CC interactions in the off-axis near detector has been selected with a purity of 63\% and an efficiency of 26\%. The p-value for the null hypothesis is 0.085 and the excluded region at 95\% CL is approximately $sin^2 2 \theta_{ee} > 0.3$ for $\Delta m^2_{eff} > 7...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1410.8811

Arxiv.org

6 6.0

Neutrino Oscillation Physics Potential of the T2K Experiment

Jun 30, 2018 06/18

by K. Abe; J. Adam; H. Aihara; T. Akiri; C. Andreopoulos; S. Aoki; A. Ariga; S. Assylbekov; D. Autiero; M. Barbi; G. J. Barker; S. Hirota; J. Holeczek; S. Horikawa; K. Huang; A. K. Ichikawa; K. Ieki; M. Ieva; M. Ikeda; J. Imber; J. Insler; G. Barr; T. J. Irvine; T. Ishida; T. Ishii; E. Iwai; K. Iwamoto; K. Iyogi; A. Izmaylov; A. Jacob; B. Jamieson; R. A. Johnson; P. Bartet-Friburg; S. Johnson; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; T. Kajita; H. Kakuno; J. Kameda; Y....

eye 6

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The observation of the recent electron neutrino appearance in a muon neutrino beam and the high-precision measurement of the mixing angle $\theta_{13}$ have led to a re-evaluation of the physics potential of the T2K long-baseline neutrino oscillation experiment. Sensitivities are explored for CP violation in neutrinos, non-maximal $\sin^22\theta_{23}$, the octant of $\theta_{23}$, and the mass hierarchy, in addition to the measurements of $\delta_{CP}$, $\sin^2\theta_{23}$, and $\Delta...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1409.7469

Arxiv.org

16 16

Measurement of the Electron Neutrino Charged-current Interaction Rate on Water with the T2K ND280 pi-zero Detector

Jun 27, 2018 06/18

by T2K Collaboration; K. Abe; J. Adam; H. Aihara; C. Andreopoulos; S. Aoki; A. Ariga; S. Assylbekov; D. Autiero; M. Barbi; G. J. Barker; J. Holeczek; S. Horikawa; F. Hosomi; K. Huang; A. K. Ichikawa; K. Ieki; M. Ieva; M. Ikeda; J. Imber; J. Insler; G. Barr; T. J. Irvine; T. Ishida; T. Ishii; E. Iwai; K. Iwamoto; K. Iyogi; A. Izmaylov; A. Jacob; B. Jamieson; M. Jiang; P. Bartet-Friburg; S. Johnson; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; T. Kajita; H. Kakuno; J. Kameda; Y....

eye 16

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This paper presents a measurement of the charged current interaction rate of the electron neutrino beam component of the beam above $1.5$~GeV using the large fiducial mass of the T2K $\pi^0$ detector. The predominant poriton of the $\nu_e$ flux ($\sim$85 %) at these energies comes from kaon decays. The measured ratio of the observed beam interaction rate to the predicted rate in the detector with water targets filled is 0.89 $\pm$ 0.08 (stat.) $\pm$ 0.11 (sys.), and with the water targets...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1503.08815

Arxiv.org

25 25

$Measurement of the $\nu_{\mu}$ charged current quasi-elastic cross-section on carbon with the T2K on-axis neutrino beam$

Measurement of the $\nu_{\mu}$ charged current quasi-elastic cross-section on carbon with the T2K on-axis neutrino beam

Jun 27, 2018 06/18

by K. Abe; J. Adam; H. Aihara; C. Andreopoulos; S. Aoki; A. Ariga; S. Assylbekov; D. Autiero; M. Barbi; G. J. Barker; G. Barr; T. Hiraki; S. Hirota; J. Holeczek; S. Horikawa; F. Hosomi; K. Huang; A. K. Ichikawa; K. Ieki; M. Ieva; M. Ikeda; P. Bartet-Friburg; J. Imber; J. Insler; T. J. Irvine; T. Ishida; T. Ishii; E. Iwai; K. Iwamoto; K. Iyogi; A. Izmaylov; A. Jacob; M. Bass; B. Jamieson; M. Jiang; S. Johnson; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; T. Kajita; H. Kakuno; M....

eye 25

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We report a measurement of the $\nu_\mu$ charged current quasi-elastic cross-sections on carbon in the T2K on-axis neutrino beam. The measured charged current quasi-elastic cross-sections on carbon at mean neutrino energies of 1.94 GeV and 0.93 GeV are $(11.95\pm 0.19(stat.)_{-1.47}^{+1.82} (syst.))\times 10^{-39}\mathrm{cm}^2/\mathrm{neutron}$ and $(10.64\pm 0.37(stat.)_{-1.65}^{+2.03} (syst.))\times 10^{-39}\mathrm{cm}^2/\mathrm{neutron}$, respectively. These results agree well with the...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1503.07452

Arxiv.org

8 8.0

Measurement of the intrinsic electron neutrino component in the T2K neutrino beam with the ND280 detector

Jun 30, 2018 06/18

by T2K Collaboration; K. Abe; J. Adam; H. Aihara; T. Akiri; C. Andreopoulos; S. Aoki; A. Ariga; T. Ariga; S. Assylbekov; D. Autiero; S. Hirota; J. Holeczek; S. Horikawa; K. Huang; A. K. Ichikawa; K. Ieki; M. Ieva; M. Ikeda; J. Imber; J. Insler; M. Barbi; T. J. Irvine; T. Ishida; T. Ishii; S. J. Ives; E. Iwai; K. Iyogi; A. Izmaylov; A. Jacob; B. Jamieson; R. A. Johnson; G. J. Barker; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; T. Kajita; H. Kakuno; J. Kameda; Y. Kanazawa; D....

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The T2K experiment has reported the first observation of the appearance of electron neutrinos in a muon neutrino beam. The main and irreducible background to the appearance signal comes from the presence in the neutrino beam of a small intrinsic component of electron neutrinos originating from muon and kaon decays. In T2K, this component is expected to represent 1.2% of the total neutrino flux. A measurement of this component using the near detector (ND280), located 280 m from the target, is...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1403.2552

Arxiv.org

11 11

$Measurement of the single $\pi^0$ production rate in neutral current neutrino interactions on water$

Measurement of the single $\pi^0$ production rate in neutral current neutrino interactions on water

Jun 30, 2018 06/18

by T2K Collaboration; K. Abe; J. Amey; C. Andreopoulos; M. Antonova; S. Aoki; A. Ariga; Y. Ashida; S. Assylbekov; D. Autiero; S. Ban; S. Hirota; M. Hogan; J. Holeczek; F. Hosomi; K. Huang; A. K. Ichikawa; K. Ieki; M. Ikeda; J. Imber; J. Insler; M. Barbi; R. A. Intonti; T. J. Irvine; T. Ishida; T. Ishii; E. Iwai; K. Iwamoto; A. Izmaylov; A. Jacob; B. Jamieson; M. Jiang; G. J. Barker; S. Johnson; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; T. Kajita; H. Kakuno; J. Kameda; D....

eye 11

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The single $\pi^0$ production rate in neutral current neutrino interactions on water in a neutrino beam with a peak neutrino energy of 0.6 GeV has been measured using the P{\O}D, one of the subdetectors of the T2K near detector. The production rate was measured for data taking periods when the P{\O}D contained water ($2.64\times{}10^{20}$ protons-on-target) and also periods without water ($3.49 \times 10^{20}$ protons-on-target). A measurement of the neutral current single $\pi^0$ production...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1704.07467

Arxiv.org

25 25

Measurements of neutrino oscillation in appearance and disappearance channels by the T2K experiment with 6.6E20 protons on target

Jun 26, 2018 06/18

by T2K Collaboration; K. Abe; J. Adam; H. Aihara; T. Akiri; C. Andreopoulos; S. Aoki; A. Ariga; S. Assylbekov; D. Autiero; M. Barbi; A. Hillairet; A. Himmel; T. Hiraki; S. Hirota; J. Holeczek; S. Horikawa; F. Hosomi; K. Huang; A. K. Ichikawa; K. Ieki; G. J. Barker; M. Ieva; M. Ikeda; J. Imber; J. Insler; T. J. Irvine; T. Ishida; T. Ishii; E. Iwai; K. Iwamoto; K. Iyogi; G. Barr; A. Izmaylov; A. Jacob; B. Jamieson; M. Jiang; S. Johnson; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth;...

eye 25

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We report on measurements of neutrino oscillation using data from the T2K long-baseline neutrino experiment collected between 2010 and 2013. In an analysis of muon neutrino disappearance alone, we find the following estimates and 68% confidence intervals for the two possible mass hierarchies: Normal Hierarchy: $\sin^2\theta_{23}=0.514^{+0.055}_{-0.056}$ and $\Delta m^2_{32}=(2.51\pm0.10)\times 10^{-3}$ eV$^2$/c$^4$ Inverted Hierarchy: $\sin^2\theta_{23}=0.511\pm0.055$ and $\Delta...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1502.01550

Arxiv.org

6 6.0

$Measurement of the $\nu_\mu$ CCQE cross section on carbon with the ND280 detector at T2K$

Measurement of the $\nu_\mu$ CCQE cross section on carbon with the ND280 detector at T2K

Jun 30, 2018 06/18

by T2K Collaboration; K. Abe; J. Adam; H. Aihara; T. Akiri; C. Andreopoulos; S. Aoki; A. Ariga; S. Assylbekov; D. Autiero; M. Barbi; A. Himmel; T. Hiraki; S. Hirota; J. Holeczek; S. Horikawa; K. Huang; A. K. Ichikawa; K. Ieki; M. Ieva; M. Ikeda; G. J. Barker; J. Imber; J. Insler; T. J. Irvine; T. Ishida; T. Ishii; E. Iwai; K. Iwamoto; K. Iyogi; A. Izmaylov; A. Jacob; G. Barr; B. Jamieson; M. Jiang; S. Johnson; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; T. Kajita; H. Kakuno; M....

eye 6

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The Charged-Current Quasi-Elastic (CCQE) interaction, $\nu_{l} + n \rightarrow l^{-} + p$, is the dominant CC process at $E_\nu \sim 1$ GeV and contributes to the signal in accelerator-based long-baseline neutrino oscillation experiments operating at intermediate neutrino energies. This paper reports a measurement by the T2K experiment of the $\nu_{\mu}$ CCQE cross section on a carbon target with the off-axis detector based on the observed distribution of muon momentum ($p_\mu$) and angle with...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1411.6264

Arxiv.org

72 72

Measurement of the Inclusive NuMu Charged Current Cross Section on Carbon in the Near Detector of the T2K Experiment

Sep 22, 2013 09/13

by T2K Collaboration; K. Abe; N. Abgrall; H. Aihara; T. Akiri; J. B. Albert; C. Andreopoulos; S. Aoki; A. Ariga; T. Ariga; S. Assylbekov; D. Autiero; M. Barbi; G. J. Barker; G. Barr; M. Bass; M. Batkiewicz; F. Bay; S. W. Bentham; V. Berardi; B. E. Berger; S. Berkman; I. Bertram; D. Beznosko; S. Bhadra; F. d. M. Blaszczyk; A. Blondel; C. Bojechko; S. Boyd; D. Brailsford; A. Bravar; C. Bronner; D. G. Brook-Roberge; N. Buchanan; R. G. Calland; J. Caravaca Rodr\iguez; S. L. Cartwright; R. Castillo; M....

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T2K has performed the first measurement of \nu{\mu} inclusive charged current interactions on carbon at neutrino energies of ~1 GeV where the measurement is reported as a flux-averaged double differential cross section in muon momentum and angle. The flux is predicted by the beam Monte Carlo and external data, including the results from the NA61/SHINE experiment. The data used for this measurement were taken in 2010 and 2011, with a total of 10.8 x 10^{19} protons-on-target. The analysis is...
Source: http://arxiv.org/abs/1302.4908v2

Arxiv.org

187 187

Evidence of Electron Neutrino Appearance in a Muon Neutrino Beam

Sep 17, 2013 09/13

by T2K Collaboration; N. Abgrall; H. Aihara; T. Akiri; J. B. Albert; C. Andreopoulos; S. Aoki; A. Ariga; T. Ariga; S. Assylbekov; D. Autiero; M. Barbi; G. J. Barker; G. Barr; M. Bass; M. Batkiewicz; F. Bay; S. W. Bentham; V. Berardi; B. E. Berger; S. Berkman; I. Bertram; D. Beznosko; S. Bhadra; F. d. M. Blaszczyk; A. Blondel; C. Bojechko; S. Boyd; D. Brailsford; A. Bravar; C. Bronner; D. G. Brook-Roberge; N. Buchanan; R. G. Calland; J. Caravaca Rodriguez; S. L. Cartwright; R. Castillo; M. G....

eye 187

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The T2K collaboration reports evidence for electron neutrino appearance at the atmospheric mass splitting, |\Delta m_{32}^2|=2.4x10^{-3} eV^2. An excess of electron neutrino interactions over background is observed from a muon neutrino beam with a peak energy of 0.6 GeV at the Super-Kamiokande (SK) detector 295 km from the beam's origin. Signal and background predictions are constrained by data from near detectors located 280 m from the neutrino production target. We observe 11 electron...
Source: http://arxiv.org/abs/1304.0841v2

Arxiv.org

5 5.0

$Measurement of the neutrino-oxygen neutral-current interaction cross section by observing nuclear deexcitation $\gamma$ rays$

Measurement of the neutrino-oxygen neutral-current interaction cross section by observing nuclear deexcitation $\gamma$ rays

Jun 30, 2018 06/18

by K. Abe; J. Adam; H. Aihara; T. Akiri; C. Andreopoulos; S. Aoki; A. Ariga; T. Ariga; S. Assylbekov; D. Autiero; M. Barbi; A. Himmel; T. Hiraki; S. Hirota; J. Holeczek; S. Horikawa; K. Huang; A. K. Ichikawa; K. Ieki; M. Ieva; M. Ikeda; G. J. Barker; J. Imber; J. Insler; T. J. Irvine; T. Ishida; T. Ishii; S. J. Ives; E. Iwai; K. Iwamoto; K. Iyogi; A. Izmaylov; G. Barr; A. Jacob; B. Jamieson; R. A. Johnson; S. Johnson; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; T. Kajita; M....

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We report the first measurement of the neutrino-oxygen neutral-current quasielastic (NCQE) cross section. It is obtained by observing nuclear deexcitation $\gamma$-rays which follow neutrino-oxygen interactions at the Super-Kamiokande water Cherenkov detector. We use T2K data corresponding to $3.01 \times 10^{20}$ protons on target. By selecting only events during the T2K beam window and with well-reconstructed vertices in the fiducial volume, the large background rate from natural...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1403.3140

Arxiv.org

51 51

Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam

Sep 21, 2013 09/13

by T2K Collaboration; K. Abe; N. Abgrall; Y. Ajima; H. Aihara; J. B. Albert; C. Andreopoulos; B. Andrieu; S. Aoki; O. Araoka; J. Argyriades; A. Ariga; T. Ariga; S. Assylbekov; D. Autiero; A. Badertscher; M. Barbi; G. J. Barker; G. Barr; M. Bass; F. Bay; S. Bentham; V. Berardi; B. E. Berger; I. Bertram; M. Besnier; J. Beucher; D. Beznosko; S. Bhadra; F. d. M. Blaszczyk; A. Blondel; C. Bojechko; J. Bouchez; S. B. Boyd; A. Bravar; C. Bronner; D. G. Brook-Roberge; N. Buchanan; H. Budd; D. Calvet; S....

eye 51

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The T2K experiment observes indications of $\nu_\mu\rightarrow \nu_e$ appearance in data accumulated with $1.43\times10^{20}$ protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario with $|\Delta m_{23}^2|=2.4\times10^{-3}$ eV$^2$, $\sin^2 2\theta_{23}=1$ and $\sin^2 2\theta_{13}=0$, the expected number of such events is 1.5$\pm$0.3(syst.). Under this hypothesis, the probability to observe six or more candidate events is...
Source: http://arxiv.org/abs/1106.2822v2

Arxiv.org

104 104

Measurements of the T2K neutrino beam properties using the INGRID on-axis near detector

Sep 23, 2013 09/13

by K. Abe; N. Abgrall; Y. Ajima; H. Aihara; J. B. Albert; C. Andreopoulos; B. Andrieu; M. D. Anerella; S. Aoki; O. Araoka; J. Argyriades; A. Ariga; T. Ariga; S. Assylbekov; D. Autiero; A. Badertscher; M. Barbi; G. J. Barker; G. Barr; M. Bass; M. Batkiewicz; F. Bay; S. Bentham; V. Berardi; B. E. Berger; I. Bertram; M. Besnier; J. Beucher; D. Beznosko; S. Bhadra; F. d. M. Blaszczyk; J. Blocki; A. Blondel; C. Bojechko; J. Bouchez; S. B. Boyd; A. Bravar; C. Bronner; D. G. Brook-Roberge; N. Buchanan;...

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Precise measurement of neutrino beam direction and intensity was achieved based on a new concept with modularized neutrino detectors. INGRID (Interactive Neutrino GRID) is an on-axis near detector for the T2K long baseline neutrino oscillation experiment. INGRID consists of 16 identical modules arranged in horizontal and vertical arrays around the beam center. The module has a sandwich structure of iron target plates and scintillator trackers. INGRID directly monitors the muon neutrino beam...
Source: http://arxiv.org/abs/1111.3119v1

Arxiv.org

64 64

First Muon-Neutrino Disappearance Study with an Off-Axis Beam

Sep 18, 2013 09/13

by T2K Collaboration; K. Abe; N. Abgrall; Y. Ajima; H. Aihara; J. B. Albert; C. Andreopoulos; B. Andrieu; M. D. Anerella; S. Aoki; O. Araoka; J. Argyriades; A. Ariga; T. Ariga; S. Assylbekov; D. Autiero; A. Badertscher; M. Barbi; G. J. Barker; G. Barr; M. Bass; M. Batkiewicz; F. Bay; S. Bentham; V. Berardi; B. E. Berger; I. Bertram; M. Besnier; J. Beucher; D. Beznosko; S. Bhadra; F. d. M. Blaszczyk; J. Blocki; A. Blondel; C. Bojechko; J. Bouchez; S. B. Boyd; A. Bravar; C. Bronner; D. G....

eye 64

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We report a measurement of muon-neutrino disappearance in the T2K experiment. The 295-km muon-neutrino beam from Tokai to Kamioka is the first implementation of the off-axis technique in a long-baseline neutrino oscillation experiment. With data corresponding to 1.43 10**20 protons on target, we observe 31 fully-contained single muon-like ring events in Super-Kamiokande, compared with an expectation of 104 +- 14 (syst) events without neutrino oscillations. The best-fit point for two-flavor...
Source: http://arxiv.org/abs/1201.1386v1

Arxiv.org

233 233

The T2K Experiment

Sep 21, 2013 09/13

by T2K Collaboration; N. Abgrall; H. Aihara; Y. Ajima; J. B. Albert; D. Allan; P. -A. Amaudruz; C. Andreopoulos; B. Andrieu; M. D. Anerella; C. Angelsen; S. Aoki; O. Araoka; J. Argyriades; A. Ariga; T. Ariga; S. Assylbekov; J. P. A. M. de André; D. Autiero; A. Badertscher; O. Ballester; M. Barbi; G. J. Barker; P. Baron; G. Barr; L. Bartoszek; M. Batkiewicz; F. Bay; S. Bentham; V. Berardi; B. E. Berger; H. Berns; I. Bertram; M. Besnier; J. Beucher; D. Beznosko; S. Bhadra; P. Birney; D. Bishop; E....

eye 233

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The T2K experiment is a long-baseline neutrino oscillation experiment. Its main goal is to measure the last unknown lepton sector mixing angle {\theta}_{13} by observing {\nu}_e appearance in a {\nu}_{\mu} beam. It also aims to make a precision measurement of the known oscillation parameters, {\Delta}m^{2}_{23} and sin^{2} 2{\theta}_{23}, via {\nu}_{\mu} disappearance studies. Other goals of the experiment include various neutrino cross section measurements and sterile neutrino searches. The...
Source: http://arxiv.org/abs/1106.1238v2

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