Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam

The T2K Collaboration; 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 Rodriguez; 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; D Di Luise; S Dolan; O Drapier; K. E Duffy; J Dumarchez

doi:10.1103/PhysRevLett.116.181801

Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam

The T2K Collaboration, 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 Rodriguez, S. L Cartwright, R Castillo, M. G Catanesi, A CerveraD 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, D Di Luise, S Dolan, O Drapier, K. E Duffy, J Dumarchez

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Abstract

T2K reports its first measurements of the parameters governing the disappearance of ¯νμ in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic ¯νμ beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the ¯νμ survival probability is expected to be minimal. Using a data set corresponding to 4.01×1020 protons on target, 34 fully contained
μ-like events were observed. The best-fit oscillation parameters are sin2(¯θ23)=
0.45 and |Δ¯m232|=2.51×10−3eV2 with 68% confidence intervals of 0.38–0.64 and 2.26–2.80×10−3eV2, respectively. These results are in agreement with existing antineutrino parameter measurements and also with the νμ disappearance parameters measured by T2K.

Original language	English
Article number	181801
Journal	Physical Review Letters
Volume	116
Issue number	18
Early online date	5 May 2016
DOIs	https://doi.org/10.1103/PhysRevLett.116.181801
Publication status	Published - 5 May 2016

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Measurement of Muon Antineutrino_ABE_Publishedonline2016_GOLD VoR (CC BY)Final published version, 1.08 MBLicence: CC BY

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The T2K Collaboration, Bay, F., Berardi, V., Berkman, S., Bhadra, S., Blondel, A., Bolognesi, S., Bordoni, S., Boyd, S. B., Brailsford, D., Bravar, A., Bronner, C., Buizza Avanzini, M., Calland, R. G., Cao, S., Caravaca Rodriguez, J., Cartwright, S. L., Castillo, R., Catanesi, M. G., ... Dumarchez, J. (2016). Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam. Physical Review Letters, 116(18), Article 181801. https://doi.org/10.1103/PhysRevLett.116.181801

@article{2d066f4e5338486bae62bce8e14b468d,

title = "Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam",

abstract = "T2K reports its first measurements of the parameters governing the disappearance of ¯νμ in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic ¯νμ beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the ¯νμ survival probability is expected to be minimal. Using a data set corresponding to 4.01×1020 protons on target, 34 fully contained μ-like events were observed. The best-fit oscillation parameters are sin2(¯θ23)=0.45 and |Δ¯m232|=2.51×10−3eV2 with 68% confidence intervals of 0.38–0.64 and 2.26–2.80×10−3eV2, respectively. These results are in agreement with existing antineutrino parameter measurements and also with the νμ disappearance parameters measured by T2K.",

author = "{The T2K Collaboration} and Ko Abe and Wilson, {Jeanne Rachel} and Teppei Katori and {Di Lodovico}, Francesca and C Andreopoulos and M Antonova and S Aoki and A Ariga and S Assylbekov and D Autiero and M Barbi and Barker, {G. J} and G Barr and P Bartet-Friburg and M Batkiewicz and F Bay and V Berardi and S Berkman and S Bhadra and A Blondel and S Bolognesi and S Bordoni and Boyd, {S. B} and D Brailsford and A Bravar and C Bronner and {Buizza Avanzini}, M and Calland, {R. G} and S Cao and {Caravaca Rodriguez}, J and Cartwright, {S. L} and R Castillo and Catanesi, {M. G} and A Cervera and D Cherdack and N Chikuma and G Christodoulou and A Clifton and J Coleman and G Collazuol and L Cremonesi and A Dabrowska and {De Rosa}, G and T Dealtry and Denner, {P. F} and Dennis, {S. R} and C Densham and D Dewhurst and {Di Luise}, D and S Dolan and O Drapier and Duffy, {K. E} and J Dumarchez",

year = "2016",

month = may,

day = "5",

doi = "10.1103/PhysRevLett.116.181801",

language = "English",

volume = "116",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society (APS)",

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The T2K Collaboration, Bay, F, Berardi, V, Berkman, S, Bhadra, S, Blondel, A, Bolognesi, S, Bordoni, S, Boyd, SB, Brailsford, D, Bravar, A, Bronner, C, Buizza Avanzini, M, Calland, RG, Cao, S, Caravaca Rodriguez, J, Cartwright, SL, Castillo, R, Catanesi, MG, Cervera, A, Cherdack, D, Chikuma, N, Christodoulou, G, Clifton, A, Coleman, J, Collazuol, G, Cremonesi, L, Dabrowska, A, De Rosa, G, Dealtry, T, Denner, PF, Dennis, SR, Densham, C, Dewhurst, D, Di Luise, D, Dolan, S, Drapier, O, Duffy, KE & Dumarchez, J 2016, 'Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam', Physical Review Letters, vol. 116, no. 18, 181801. https://doi.org/10.1103/PhysRevLett.116.181801

TY - JOUR

T1 - Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam

AU - The T2K Collaboration

AU - Abe, Ko

AU - Wilson, Jeanne Rachel

AU - Katori, Teppei

AU - Di Lodovico, Francesca

AU - Andreopoulos, C

AU - Antonova, M

AU - Aoki, S

AU - Ariga, A

AU - Assylbekov, S

AU - Autiero, D

AU - Barbi, M

AU - Barker, G. J

AU - Barr, G

AU - Bartet-Friburg, P

AU - Batkiewicz, M

AU - Bay, F

AU - Berardi, V

AU - Berkman, S

AU - Bhadra, S

AU - Blondel, A

AU - Bolognesi, S

AU - Bordoni, S

AU - Boyd, S. B

AU - Brailsford, D

AU - Bravar, A

AU - Bronner, C

AU - Buizza Avanzini, M

AU - Calland, R. G

AU - Cao, S

AU - Caravaca Rodriguez, J

AU - Cartwright, S. L

AU - Castillo, R

AU - Catanesi, M. G

AU - Cervera, A

AU - Cherdack, D

AU - Chikuma, N

AU - Christodoulou, G

AU - Clifton, A

AU - Coleman, J

AU - Collazuol, G

AU - Cremonesi, L

AU - Dabrowska, A

AU - De Rosa, G

AU - Dealtry, T

AU - Denner, P. F

AU - Dennis, S. R

AU - Densham, C

AU - Dewhurst, D

AU - Di Luise, D

AU - Dolan, S

AU - Drapier, O

AU - Duffy, K. E

AU - Dumarchez, J

PY - 2016/5/5

Y1 - 2016/5/5

N2 - T2K reports its first measurements of the parameters governing the disappearance of ¯νμ in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic ¯νμ beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the ¯νμ survival probability is expected to be minimal. Using a data set corresponding to 4.01×1020 protons on target, 34 fully contained μ-like events were observed. The best-fit oscillation parameters are sin2(¯θ23)=0.45 and |Δ¯m232|=2.51×10−3eV2 with 68% confidence intervals of 0.38–0.64 and 2.26–2.80×10−3eV2, respectively. These results are in agreement with existing antineutrino parameter measurements and also with the νμ disappearance parameters measured by T2K.

AB - T2K reports its first measurements of the parameters governing the disappearance of ¯νμ in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic ¯νμ beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the ¯νμ survival probability is expected to be minimal. Using a data set corresponding to 4.01×1020 protons on target, 34 fully contained μ-like events were observed. The best-fit oscillation parameters are sin2(¯θ23)=0.45 and |Δ¯m232|=2.51×10−3eV2 with 68% confidence intervals of 0.38–0.64 and 2.26–2.80×10−3eV2, respectively. These results are in agreement with existing antineutrino parameter measurements and also with the νμ disappearance parameters measured by T2K.

U2 - 10.1103/PhysRevLett.116.181801

DO - 10.1103/PhysRevLett.116.181801

M3 - Article

SN - 0031-9007

VL - 116

JO - Physical Review Letters

JF - Physical Review Letters

IS - 18

M1 - 181801

ER -

Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam

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