A study of invisible neutrino decay at DUNE and its effects on θ23 measurement

Abstract We study the consequences of invisible decay of neutrinos in the context of the DUNE experiment. We assume that the third mass eigenstate is unstable and decays to a light sterile neutrino and a scalar or a pseudo-scalar. We consider DUNE running in 5 years neutrino and 5 years antineutrino...
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Gespeichert in:

Autor*in:	Choubey, Sandhya [verfasserIn] Goswami, Srubabati Pramanik, Dipyaman

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2018

Schlagwörter:	Lifetime Neutrino Detectors and Telescopes (experiments) Oscillation

Anmerkung:	© The Author(s) 2018

Übergeordnetes Werk:	Enthalten in: Journal of high energy physics - Berlin : Springer, 1997, 2018(2018), 2 vom: 08. Feb.
Übergeordnetes Werk:	volume:2018 ; year:2018 ; number:2 ; day:08 ; month:02

Links:	Volltext

DOI / URN:	10.1007/JHEP02(2018)055

Katalog-ID:	SPR030551536

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520			\|a Abstract We study the consequences of invisible decay of neutrinos in the context of the DUNE experiment. We assume that the third mass eigenstate is unstable and decays to a light sterile neutrino and a scalar or a pseudo-scalar. We consider DUNE running in 5 years neutrino and 5 years antineutrino mode and a detector volume of 40 kt. We obtain the expected sensitivity on the rest-frame life-time τ3 normalized to the mass m3 as $ τ_{3} $/m3> 4.50 × $ 10^{−11} $ s/eV at 90% C.L. for a normal hierarchical mass spectrum. We also find that DUNE can discover neutrino decay for $ τ_{3} $/m3> 4.27 × $ 10^{−11} $ s/eV at 90% C.L. In addition, for an unstable $ ν_{3} $ with an illustrative value of $ τ_{3} $/m3 = 1.2 × $ 10^{−11} $ s/eV, the no decay case could get disfavoured at the 3σ C.L. At 90% C.L. the expected precision range for this true value is obtained as 1.71 × $ 10^{−11} $> $ τ_{3} $/m3> 9.29 × $ 10^{−12} $ in units of s/eV. We also study the correlation between a non-zero $ τ_{3} $/m3 and standard oscillation parameters and find an interesting correlation in the appearance and disappearance channels with the mixing angle θ23. This alters the octant sensitivity of DUNE, favorably (unfavorably) for true θ23 in the lower (higher) octant. The effect of a decaying neutrino does not alter the hierarchy or CP violation discovery sensitivity of DUNE in a discernible way.
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Indexfelder

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matchkey_str	article:10298479:2018----::suyfniilnurndcytuenisfet
hierarchy_sort_str	2018
publishDate	2018
allfields	10.1007/JHEP02(2018)055 doi (DE-627)SPR030551536 (SPR)JHEP02(2018)055-e DE-627 ger DE-627 rakwb eng Choubey, Sandhya verfasserin aut A study of invisible neutrino decay at DUNE and its effects on θ23 measurement 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2018 Abstract We study the consequences of invisible decay of neutrinos in the context of the DUNE experiment. We assume that the third mass eigenstate is unstable and decays to a light sterile neutrino and a scalar or a pseudo-scalar. We consider DUNE running in 5 years neutrino and 5 years antineutrino mode and a detector volume of 40 kt. We obtain the expected sensitivity on the rest-frame life-time τ3 normalized to the mass m3 as $ τ_{3} $/m3> 4.50 × $ 10^{−11} $ s/eV at 90% C.L. for a normal hierarchical mass spectrum. We also find that DUNE can discover neutrino decay for $ τ_{3} $/m3> 4.27 × $ 10^{−11} $ s/eV at 90% C.L. In addition, for an unstable $ ν_{3} $ with an illustrative value of $ τ_{3} $/m3 = 1.2 × $ 10^{−11} $ s/eV, the no decay case could get disfavoured at the 3σ C.L. At 90% C.L. the expected precision range for this true value is obtained as 1.71 × $ 10^{−11} $> $ τ_{3} $/m3> 9.29 × $ 10^{−12} $ in units of s/eV. We also study the correlation between a non-zero $ τ_{3} $/m3 and standard oscillation parameters and find an interesting correlation in the appearance and disappearance channels with the mixing angle θ23. This alters the octant sensitivity of DUNE, favorably (unfavorably) for true θ23 in the lower (higher) octant. The effect of a decaying neutrino does not alter the hierarchy or CP violation discovery sensitivity of DUNE in a discernible way. Lifetime (dpeaa)DE-He213 Neutrino Detectors and Telescopes (experiments) (dpeaa)DE-He213 Oscillation (dpeaa)DE-He213 Goswami, Srubabati aut Pramanik, Dipyaman aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2018(2018), 2 vom: 08. Feb. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2018 year:2018 number:2 day:08 month:02 https://dx.doi.org/10.1007/JHEP02(2018)055 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2018 2018 2 08 02
spelling	10.1007/JHEP02(2018)055 doi (DE-627)SPR030551536 (SPR)JHEP02(2018)055-e DE-627 ger DE-627 rakwb eng Choubey, Sandhya verfasserin aut A study of invisible neutrino decay at DUNE and its effects on θ23 measurement 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2018 Abstract We study the consequences of invisible decay of neutrinos in the context of the DUNE experiment. We assume that the third mass eigenstate is unstable and decays to a light sterile neutrino and a scalar or a pseudo-scalar. We consider DUNE running in 5 years neutrino and 5 years antineutrino mode and a detector volume of 40 kt. We obtain the expected sensitivity on the rest-frame life-time τ3 normalized to the mass m3 as $ τ_{3} $/m3> 4.50 × $ 10^{−11} $ s/eV at 90% C.L. for a normal hierarchical mass spectrum. We also find that DUNE can discover neutrino decay for $ τ_{3} $/m3> 4.27 × $ 10^{−11} $ s/eV at 90% C.L. In addition, for an unstable $ ν_{3} $ with an illustrative value of $ τ_{3} $/m3 = 1.2 × $ 10^{−11} $ s/eV, the no decay case could get disfavoured at the 3σ C.L. At 90% C.L. the expected precision range for this true value is obtained as 1.71 × $ 10^{−11} $> $ τ_{3} $/m3> 9.29 × $ 10^{−12} $ in units of s/eV. We also study the correlation between a non-zero $ τ_{3} $/m3 and standard oscillation parameters and find an interesting correlation in the appearance and disappearance channels with the mixing angle θ23. This alters the octant sensitivity of DUNE, favorably (unfavorably) for true θ23 in the lower (higher) octant. The effect of a decaying neutrino does not alter the hierarchy or CP violation discovery sensitivity of DUNE in a discernible way. Lifetime (dpeaa)DE-He213 Neutrino Detectors and Telescopes (experiments) (dpeaa)DE-He213 Oscillation (dpeaa)DE-He213 Goswami, Srubabati aut Pramanik, Dipyaman aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2018(2018), 2 vom: 08. Feb. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2018 year:2018 number:2 day:08 month:02 https://dx.doi.org/10.1007/JHEP02(2018)055 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2018 2018 2 08 02
allfields_unstemmed	10.1007/JHEP02(2018)055 doi (DE-627)SPR030551536 (SPR)JHEP02(2018)055-e DE-627 ger DE-627 rakwb eng Choubey, Sandhya verfasserin aut A study of invisible neutrino decay at DUNE and its effects on θ23 measurement 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2018 Abstract We study the consequences of invisible decay of neutrinos in the context of the DUNE experiment. We assume that the third mass eigenstate is unstable and decays to a light sterile neutrino and a scalar or a pseudo-scalar. We consider DUNE running in 5 years neutrino and 5 years antineutrino mode and a detector volume of 40 kt. We obtain the expected sensitivity on the rest-frame life-time τ3 normalized to the mass m3 as $ τ_{3} $/m3> 4.50 × $ 10^{−11} $ s/eV at 90% C.L. for a normal hierarchical mass spectrum. We also find that DUNE can discover neutrino decay for $ τ_{3} $/m3> 4.27 × $ 10^{−11} $ s/eV at 90% C.L. In addition, for an unstable $ ν_{3} $ with an illustrative value of $ τ_{3} $/m3 = 1.2 × $ 10^{−11} $ s/eV, the no decay case could get disfavoured at the 3σ C.L. At 90% C.L. the expected precision range for this true value is obtained as 1.71 × $ 10^{−11} $> $ τ_{3} $/m3> 9.29 × $ 10^{−12} $ in units of s/eV. We also study the correlation between a non-zero $ τ_{3} $/m3 and standard oscillation parameters and find an interesting correlation in the appearance and disappearance channels with the mixing angle θ23. This alters the octant sensitivity of DUNE, favorably (unfavorably) for true θ23 in the lower (higher) octant. The effect of a decaying neutrino does not alter the hierarchy or CP violation discovery sensitivity of DUNE in a discernible way. Lifetime (dpeaa)DE-He213 Neutrino Detectors and Telescopes (experiments) (dpeaa)DE-He213 Oscillation (dpeaa)DE-He213 Goswami, Srubabati aut Pramanik, Dipyaman aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2018(2018), 2 vom: 08. Feb. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2018 year:2018 number:2 day:08 month:02 https://dx.doi.org/10.1007/JHEP02(2018)055 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2018 2018 2 08 02
allfieldsGer	10.1007/JHEP02(2018)055 doi (DE-627)SPR030551536 (SPR)JHEP02(2018)055-e DE-627 ger DE-627 rakwb eng Choubey, Sandhya verfasserin aut A study of invisible neutrino decay at DUNE and its effects on θ23 measurement 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2018 Abstract We study the consequences of invisible decay of neutrinos in the context of the DUNE experiment. We assume that the third mass eigenstate is unstable and decays to a light sterile neutrino and a scalar or a pseudo-scalar. We consider DUNE running in 5 years neutrino and 5 years antineutrino mode and a detector volume of 40 kt. We obtain the expected sensitivity on the rest-frame life-time τ3 normalized to the mass m3 as $ τ_{3} $/m3> 4.50 × $ 10^{−11} $ s/eV at 90% C.L. for a normal hierarchical mass spectrum. We also find that DUNE can discover neutrino decay for $ τ_{3} $/m3> 4.27 × $ 10^{−11} $ s/eV at 90% C.L. In addition, for an unstable $ ν_{3} $ with an illustrative value of $ τ_{3} $/m3 = 1.2 × $ 10^{−11} $ s/eV, the no decay case could get disfavoured at the 3σ C.L. At 90% C.L. the expected precision range for this true value is obtained as 1.71 × $ 10^{−11} $> $ τ_{3} $/m3> 9.29 × $ 10^{−12} $ in units of s/eV. We also study the correlation between a non-zero $ τ_{3} $/m3 and standard oscillation parameters and find an interesting correlation in the appearance and disappearance channels with the mixing angle θ23. This alters the octant sensitivity of DUNE, favorably (unfavorably) for true θ23 in the lower (higher) octant. The effect of a decaying neutrino does not alter the hierarchy or CP violation discovery sensitivity of DUNE in a discernible way. Lifetime (dpeaa)DE-He213 Neutrino Detectors and Telescopes (experiments) (dpeaa)DE-He213 Oscillation (dpeaa)DE-He213 Goswami, Srubabati aut Pramanik, Dipyaman aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2018(2018), 2 vom: 08. Feb. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2018 year:2018 number:2 day:08 month:02 https://dx.doi.org/10.1007/JHEP02(2018)055 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2018 2018 2 08 02
allfieldsSound	10.1007/JHEP02(2018)055 doi (DE-627)SPR030551536 (SPR)JHEP02(2018)055-e DE-627 ger DE-627 rakwb eng Choubey, Sandhya verfasserin aut A study of invisible neutrino decay at DUNE and its effects on θ23 measurement 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2018 Abstract We study the consequences of invisible decay of neutrinos in the context of the DUNE experiment. We assume that the third mass eigenstate is unstable and decays to a light sterile neutrino and a scalar or a pseudo-scalar. We consider DUNE running in 5 years neutrino and 5 years antineutrino mode and a detector volume of 40 kt. We obtain the expected sensitivity on the rest-frame life-time τ3 normalized to the mass m3 as $ τ_{3} $/m3> 4.50 × $ 10^{−11} $ s/eV at 90% C.L. for a normal hierarchical mass spectrum. We also find that DUNE can discover neutrino decay for $ τ_{3} $/m3> 4.27 × $ 10^{−11} $ s/eV at 90% C.L. In addition, for an unstable $ ν_{3} $ with an illustrative value of $ τ_{3} $/m3 = 1.2 × $ 10^{−11} $ s/eV, the no decay case could get disfavoured at the 3σ C.L. At 90% C.L. the expected precision range for this true value is obtained as 1.71 × $ 10^{−11} $> $ τ_{3} $/m3> 9.29 × $ 10^{−12} $ in units of s/eV. We also study the correlation between a non-zero $ τ_{3} $/m3 and standard oscillation parameters and find an interesting correlation in the appearance and disappearance channels with the mixing angle θ23. This alters the octant sensitivity of DUNE, favorably (unfavorably) for true θ23 in the lower (higher) octant. The effect of a decaying neutrino does not alter the hierarchy or CP violation discovery sensitivity of DUNE in a discernible way. Lifetime (dpeaa)DE-He213 Neutrino Detectors and Telescopes (experiments) (dpeaa)DE-He213 Oscillation (dpeaa)DE-He213 Goswami, Srubabati aut Pramanik, Dipyaman aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2018(2018), 2 vom: 08. Feb. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2018 year:2018 number:2 day:08 month:02 https://dx.doi.org/10.1007/JHEP02(2018)055 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2018 2018 2 08 02
language	English
source	Enthalten in Journal of high energy physics 2018(2018), 2 vom: 08. Feb. volume:2018 year:2018 number:2 day:08 month:02
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authorswithroles_txt_mv	Choubey, Sandhya @@aut@@ Goswami, Srubabati @@aut@@ Pramanik, Dipyaman @@aut@@
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author	Choubey, Sandhya
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topic_title	A study of invisible neutrino decay at DUNE and its effects on θ23 measurement Lifetime (dpeaa)DE-He213 Neutrino Detectors and Telescopes (experiments) (dpeaa)DE-He213 Oscillation (dpeaa)DE-He213
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title	A study of invisible neutrino decay at DUNE and its effects on θ23 measurement
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title_full	A study of invisible neutrino decay at DUNE and its effects on θ23 measurement
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author_browse	Choubey, Sandhya Goswami, Srubabati Pramanik, Dipyaman
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title_sort	study of invisible neutrino decay at dune and its effects on θ23 measurement
title_auth	A study of invisible neutrino decay at DUNE and its effects on θ23 measurement
abstract	Abstract We study the consequences of invisible decay of neutrinos in the context of the DUNE experiment. We assume that the third mass eigenstate is unstable and decays to a light sterile neutrino and a scalar or a pseudo-scalar. We consider DUNE running in 5 years neutrino and 5 years antineutrino mode and a detector volume of 40 kt. We obtain the expected sensitivity on the rest-frame life-time τ3 normalized to the mass m3 as $ τ_{3} $/m3> 4.50 × $ 10^{−11} $ s/eV at 90% C.L. for a normal hierarchical mass spectrum. We also find that DUNE can discover neutrino decay for $ τ_{3} $/m3> 4.27 × $ 10^{−11} $ s/eV at 90% C.L. In addition, for an unstable $ ν_{3} $ with an illustrative value of $ τ_{3} $/m3 = 1.2 × $ 10^{−11} $ s/eV, the no decay case could get disfavoured at the 3σ C.L. At 90% C.L. the expected precision range for this true value is obtained as 1.71 × $ 10^{−11} $> $ τ_{3} $/m3> 9.29 × $ 10^{−12} $ in units of s/eV. We also study the correlation between a non-zero $ τ_{3} $/m3 and standard oscillation parameters and find an interesting correlation in the appearance and disappearance channels with the mixing angle θ23. This alters the octant sensitivity of DUNE, favorably (unfavorably) for true θ23 in the lower (higher) octant. The effect of a decaying neutrino does not alter the hierarchy or CP violation discovery sensitivity of DUNE in a discernible way. © The Author(s) 2018
abstractGer	Abstract We study the consequences of invisible decay of neutrinos in the context of the DUNE experiment. We assume that the third mass eigenstate is unstable and decays to a light sterile neutrino and a scalar or a pseudo-scalar. We consider DUNE running in 5 years neutrino and 5 years antineutrino mode and a detector volume of 40 kt. We obtain the expected sensitivity on the rest-frame life-time τ3 normalized to the mass m3 as $ τ_{3} $/m3> 4.50 × $ 10^{−11} $ s/eV at 90% C.L. for a normal hierarchical mass spectrum. We also find that DUNE can discover neutrino decay for $ τ_{3} $/m3> 4.27 × $ 10^{−11} $ s/eV at 90% C.L. In addition, for an unstable $ ν_{3} $ with an illustrative value of $ τ_{3} $/m3 = 1.2 × $ 10^{−11} $ s/eV, the no decay case could get disfavoured at the 3σ C.L. At 90% C.L. the expected precision range for this true value is obtained as 1.71 × $ 10^{−11} $> $ τ_{3} $/m3> 9.29 × $ 10^{−12} $ in units of s/eV. We also study the correlation between a non-zero $ τ_{3} $/m3 and standard oscillation parameters and find an interesting correlation in the appearance and disappearance channels with the mixing angle θ23. This alters the octant sensitivity of DUNE, favorably (unfavorably) for true θ23 in the lower (higher) octant. The effect of a decaying neutrino does not alter the hierarchy or CP violation discovery sensitivity of DUNE in a discernible way. © The Author(s) 2018
abstract_unstemmed	Abstract We study the consequences of invisible decay of neutrinos in the context of the DUNE experiment. We assume that the third mass eigenstate is unstable and decays to a light sterile neutrino and a scalar or a pseudo-scalar. We consider DUNE running in 5 years neutrino and 5 years antineutrino mode and a detector volume of 40 kt. We obtain the expected sensitivity on the rest-frame life-time τ3 normalized to the mass m3 as $ τ_{3} $/m3> 4.50 × $ 10^{−11} $ s/eV at 90% C.L. for a normal hierarchical mass spectrum. We also find that DUNE can discover neutrino decay for $ τ_{3} $/m3> 4.27 × $ 10^{−11} $ s/eV at 90% C.L. In addition, for an unstable $ ν_{3} $ with an illustrative value of $ τ_{3} $/m3 = 1.2 × $ 10^{−11} $ s/eV, the no decay case could get disfavoured at the 3σ C.L. At 90% C.L. the expected precision range for this true value is obtained as 1.71 × $ 10^{−11} $> $ τ_{3} $/m3> 9.29 × $ 10^{−12} $ in units of s/eV. We also study the correlation between a non-zero $ τ_{3} $/m3 and standard oscillation parameters and find an interesting correlation in the appearance and disappearance channels with the mixing angle θ23. This alters the octant sensitivity of DUNE, favorably (unfavorably) for true θ23 in the lower (higher) octant. The effect of a decaying neutrino does not alter the hierarchy or CP violation discovery sensitivity of DUNE in a discernible way. © The Author(s) 2018
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title_short	A study of invisible neutrino decay at DUNE and its effects on θ23 measurement
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A study of invisible neutrino decay at DUNE and its effects on θ23 measurement

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