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

T2K Collaboration

doi:10.1103/PhysRevD.89.092003

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

T2K Collaboration

Physics and Astronomy

Joint Institute for Nuclear Research
The University of Tokyo
Stony Brook University
Duke University
STFC Rutherford Appleton Laboratory
Kobe University
University of Bern
Colorado State University
Universite Claude Bernard Lyon 1
University of Regina
University of Warwick
University of Oxford
Institute of Nuclear Physics
Swiss Federal Institute of Technology Zurich
Lancaster University
Polytechnic University of Bari
University of British Columbia
York University Toronto
Louisiana State University
University of Geneva
University of Victoria BC
Institute for High Energy Physics
Imperial College London
Kyoto University
University of Liverpool
University of Sheffield
CSIC
University of Colorado Boulder
University of Padua
University of Washington
Queen Mary University of London
University of Pittsburgh

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25 Scopus citations

Abstract

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 presented. The charged current interactions of electron neutrinos are selected by combining the particle identification capabilities of both the time projection chambers and electromagnetic calorimeters of ND280. The measured ratio between the observed electron neutrino beam component and the prediction is 1.01±0.10 providing a direct confirmation of the neutrino fluxes and neutrino cross section modeling used for T2K neutrino oscillation analyses. Electron neutrinos coming from muons and kaons decay are also separately measured, resulting in a ratio with respect to the prediction of 0.68±0.30 and 1.10±0.14, respectively.

Original language	English
Article number	092003
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	89
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.89.092003
State	Published - May 5 2014

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10.1103/PhysRevD.89.092003

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@article{b8a3f579907c4c45b27cff593a484b26,

title = "Measurement of the intrinsic electron neutrino component in the T2K neutrino beam with the ND280 detector",

abstract = "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 presented. The charged current interactions of electron neutrinos are selected by combining the particle identification capabilities of both the time projection chambers and electromagnetic calorimeters of ND280. The measured ratio between the observed electron neutrino beam component and the prediction is 1.01±0.10 providing a direct confirmation of the neutrino fluxes and neutrino cross section modeling used for T2K neutrino oscillation analyses. Electron neutrinos coming from muons and kaons decay are also separately measured, resulting in a ratio with respect to the prediction of 0.68±0.30 and 1.10±0.14, respectively.",

author = "\{T2K Collaboration\} and K. Abe and J. Adam and H. Aihara and T. Akiri and C. Andreopoulos and S. Aoki and A. Ariga and T. Ariga and S. Assylbekov and D. Autiero and M. Barbi and Barker, \{G. J.\} and G. Barr and M. Bass and M. Batkiewicz and F. Bay and Bentham, \{S. W.\} and V. Berardi and Berger, \{B. E.\} and S. Berkman and I. Bertram and S. Bhadra and Blaszczyk, \{F. D.M.\} and A. Blondel and C. Bojechko and S. Bordoni and Boyd, \{S. B.\} and D. Brailsford and A. Bravar and C. Bronner and N. Buchanan and Calland, \{R. G.\} and \{Caravaca Rodr{\'i}guez\}, J. and Cartwright, \{S. L.\} and R. Castillo and Catanesi, \{M. G.\} and A. Cervera and D. Cherdack and G. Christodoulou and A. Clifton and J. Coleman and Coleman, \{S. J.\} and G. Collazuol and K. Connolly and L. Cremonesi and A. Dabrowska and I. Danko and R. Das and Jung, \{C. K.\} and C. McGrew",

note = "Publisher Copyright: {\textcopyright} 2013 American Physical Society.",

year = "2014",

month = may,

day = "5",

doi = "10.1103/PhysRevD.89.092003",

language = "English",

volume = "89",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

number = "9",

}

TY - JOUR

T1 - Measurement of the intrinsic electron neutrino component in the T2K neutrino beam with the ND280 detector

AU - T2K Collaboration

AU - Abe, K.

AU - Adam, J.

AU - Aihara, H.

AU - Akiri, T.

AU - Andreopoulos, C.

AU - Aoki, S.

AU - Ariga, A.

AU - Ariga, T.

AU - Assylbekov, S.

AU - Autiero, D.

AU - Barbi, M.

AU - Barker, G. J.

AU - Barr, G.

AU - Bass, M.

AU - Batkiewicz, M.

AU - Bay, F.

AU - Bentham, S. W.

AU - Berardi, V.

AU - Berger, B. E.

AU - Berkman, S.

AU - Bertram, I.

AU - Bhadra, S.

AU - Blaszczyk, F. D.M.

AU - Blondel, A.

AU - Bojechko, C.

AU - Bordoni, S.

AU - Boyd, S. B.

AU - Brailsford, D.

AU - Bravar, A.

AU - Bronner, C.

AU - Buchanan, N.

AU - Calland, R. G.

AU - Caravaca Rodríguez, J.

AU - Cartwright, S. L.

AU - Castillo, R.

AU - Catanesi, M. G.

AU - Cervera, A.

AU - Cherdack, D.

AU - Christodoulou, G.

AU - Clifton, A.

AU - Coleman, J.

AU - Coleman, S. J.

AU - Collazuol, G.

AU - Connolly, K.

AU - Cremonesi, L.

AU - Dabrowska, A.

AU - Danko, I.

AU - Das, R.

AU - Jung, C. K.

AU - McGrew, C.

PY - 2014/5/5

Y1 - 2014/5/5

N2 - 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 presented. The charged current interactions of electron neutrinos are selected by combining the particle identification capabilities of both the time projection chambers and electromagnetic calorimeters of ND280. The measured ratio between the observed electron neutrino beam component and the prediction is 1.01±0.10 providing a direct confirmation of the neutrino fluxes and neutrino cross section modeling used for T2K neutrino oscillation analyses. Electron neutrinos coming from muons and kaons decay are also separately measured, resulting in a ratio with respect to the prediction of 0.68±0.30 and 1.10±0.14, respectively.

AB - 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 presented. The charged current interactions of electron neutrinos are selected by combining the particle identification capabilities of both the time projection chambers and electromagnetic calorimeters of ND280. The measured ratio between the observed electron neutrino beam component and the prediction is 1.01±0.10 providing a direct confirmation of the neutrino fluxes and neutrino cross section modeling used for T2K neutrino oscillation analyses. Electron neutrinos coming from muons and kaons decay are also separately measured, resulting in a ratio with respect to the prediction of 0.68±0.30 and 1.10±0.14, respectively.

UR - https://www.scopus.com/pages/publications/84900992701

U2 - 10.1103/PhysRevD.89.092003

DO - 10.1103/PhysRevD.89.092003

M3 - Article

AN - SCOPUS:84900992701

SN - 1550-7998

VL - 89

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 9

M1 - 092003

ER -

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

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