Measurement of neutrino oscillation by the K2K experiment
Myunggeun AhnE. AliuS. AndringaS. AokiYuya AoyamaJ. ArgyriadesK. AsakuraR. AshieF. BerghausH. BernsH. BhangA. BlondelS. BorghiJ. BouchezS. BoydJ. Burguet–CastellD. CasperJ. CatalaC. CavataA. CerveraS. M. ChenK. O. ChoJ. H. ChoiU. DoreS. EchigoX. Espinal CurullM. FechnerE. FernándezKotaro FujiiY. FujiiSatoshi FukudaY. FukudaJ.J. Gómez-CadenasR. GranT. HaraM. HasegawaT. HasegawaKenji HayashiY. HayatoR. L. HelmerI. HiguchiJ. HillK. HiraideE. HiroseJ. HosakaA. K. IchikawaM. IeiriM. IinumaAkihiro IkedaT. InagakiToru IshidaK. IshiharaH. IshiiT. IshiiH. IshinoM. IshitsukaY. ItowT. IwashitaH. I. JangJ. S. JangE. J. JeonIn Seok JeongK. K. JooG. Jover-MañasC. K. JungT. KajitaJ. KamedaK. KaneyukiB. H. KangI. KatoY. KatoE. KearnsD. KerrC. O. KimM. KhabibullinA. KhotjantsevD. KiełczewskaB. J. KimH. I. KimJ. H. KimJ. Y. KimS. B. KimM. KitamuraP. KitchingKazuyoshi KobayashiT. KobayashiM. KohamaA. KonakaY. KoshioW. KroppJun KubotaY. KudenkoG. KumeY. KunoYoshinori KurimotoT. KutterJ. G. LearnedS. LikhodedI. T. LimSung Hak LimP. LoverreL. LudoviciH. MaesakaJ. MalletC. MarianiK. MartensT. MaruyamaS. MatsunoV. MatveevC. MaugerK. B. M. MahnC. McGrewS. MikheyevM. MinakawaA. MinaminoS. MineO. MineevC. MitsudaG. MitsukaM. MiuraY. MoriguchiT. MoritaS. MoriyamaT. NakadairaM. NakahataK. NakamuraI. NakanoF. NakataT. NakayaS. NakayamaT. NambaR. NambuS. NawangK. NishikawaH. NishinoS. NishiyamaKoh‐hei NittaShuichi NodaH. NoumiF. NovaP. NovellaY. ObayashiAtsushi OkadaK. OkumuraM. OkumuraM. OnchiT. OoyabuS. M. OserT. OtakiY. OyamaM. Y. PacH. ParkF. PierreA. RodriguezC. SajiAkito SakaiM. SakudaN. SakuraiF. SánchezA. SarratT. SasakiH. SatoK. SatôK. ScholbergR. SchroeterM. SekiguchiE. S. SeoE. SharkeyAsuka ShimaM. ShiozawaKiyoshi ShiraishiG. SitjesM. SmyHyoungmin SoH. SobelM. SorelJ. L. StoneL. SulakYuki SugaY. SuzukiY. SuzukiY. SuzukiM. TadaT. TakahashiM. TakasakiM. TakatsukiY. TakenagaK. TakenakaH. TakeuchiY. TakeuchiK. TakiY. TakuboN. TamuraH. TanakaК. ТаnакаM. TanakaY. TanakaK. TashiroR. TerriS. T’JampensA. Tornero-LópezT. ToshitoY. TotsukaS. UedaM. R. VaginsL. WhiteheadC. W. WalterW. WangR. J. WilkesS. YamadaY. YamadaS. YamamotoY. YamanoiC. YanagisawaN. YershovH. YokoyamaM. YokoyamaJ. YooM. YoshidaJ. Zalipska
640
Citation
52
Reference
10
Related Paper
Citation Trend
Abstract:
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.We have discussed the basic principle and the experiments of neutrino mixing and neutrino oscillation, and investigated quantificationally the theory of neutrino oscillation in vacuum, the neutrino oscillation probability and the CP violation effects.
Oscillation (cell signaling)
CP violation
Cite
Citations (0)
Neutrino and anti-neutrino states coming from the neutral current or $Z_0$ decay are blind with respect to the flavor. The neutrino oscillation is observed and formulated when its flavor is known. However, it has been shown that we can see neutrino oscillation pattern for $Z_0$ decay neutrinos provided that both neutrino and anti-neutrino are detected. In this paper, we restudy this oscillation via quantum field theory approach. Through this approach, we find that the oscillation pattern ceases if the distance between the detectors is larger than the coherence length, while both neutrino and antineutrino states may be coherent. Also the uncertainty of source (region of $Z_0$ decay) does not have any role in the coherency of neutrino and antineutrino.
Oscillation (cell signaling)
Cosmic neutrino background
Cite
Citations (0)
Recent evidence for neutrino oscillations has revolutionized the study of neutrino masses and mixing. This report gives an overview of what we are learning from the neutrino oscillation experiments, the prospects for the near term, and the bright future of neutrino mass studies.
Oscillation (cell signaling)
Cite
Citations (1)
We show that, despite appearances, a theoretical approach to neutrino oscillation in which the neutrino and its interaction partners are entangled yields the standard result for the neutrino oscillation wavelength. We also shed some light on the question of why plane-wave approaches to the neutrino oscillation problem can yield the correct oscillation wavelength even though they do not explicitly account for the localization of the neutrino source and the detector.
Oscillation (cell signaling)
Solar neutrino problem
Cite
Citations (31)
Oscillation (cell signaling)
Phenomenon
Cite
Citations (5)
Neutrino oscillation physics is entering the precision measurement era. The focus of next generation neutrino experiments will be to determine the parameters governing neutrino oscillations precisely. The Hyper-Kamiokande experiment, currently under construction in Japan, includes a long-baseline neutrino oscillations program. Its main goals will be to determine whether CP violation occurs in neutrino oscillations and to provide precise measurements of neutrino oscillation parameters. To achieve this, Hyper-Kamiokande will have a large fiducial volume (8 times that of Super-Kamiokande) and will benefit from the upgrade of the J-PARC neutrino beam, enabling it to collect an unprecedented amount of data. A thorough knowledge of systematic effects and powerful near detectors are needed to match this level of precision. This talk presents the expected sensitivity of Hyper-K to oscillation parameters, notably CP violation, using a combination of accelerator and atmospheric neutrino information.
Super-Kamiokande
Oscillation (cell signaling)
Upgrade
Baseline (sea)
Solar neutrino problem
Cite
Citations (2)
We have discussed the theoty of neutrino mixing and neutrino oscillation in vacuum, investigated quantificationally CP violation effect in neutrino oscillations, We calculated the neutrino oscillation probability and the CP violation effects in SUSY model.
Oscillation (cell signaling)
CP violation
Cite
Citations (0)
We discuss conceptual aspects of neutrino oscillations with the main emphasis on the field-theoretical approach. This approach includes the neutrino source and detector processes and allows to obtain the neutrino transition or survival probabilities as cross sections derived from the Feynman diagram of the combined source - detection process. In this context, the neutrinos which are supposed to oscillate appear as propagators of the neutrino mass eigenfields, connecting the source and detection processes. We consider also the question why the canonical neutrino oscillation formula is so robust against corrections and discuss the nature of the oscillating neutrino state emerging in the field-theoretical approach.
Propagator
Oscillation (cell signaling)
Cite
Citations (0)
In this short lecture, I discuss some basic phenomenological aspects of CP and T violation in neutrino oscillation. Using CP/T trajectory diagrams in the bi‐probability space, I try to sketch out some essential features of the interplay between the effect of CP/T violating phase and that of the matter in neutrino oscillation.
Sketch
Oscillation (cell signaling)
CP violation
Cite
Citations (4)
Neutrino and anti-neutrino states coming from the neutral current or Z0 decay are blind with respect to the flavor. The neutrino oscillation is observed and formulated when its flavor is known. However, it has been shown that we can see neutrino oscillation pattern for Z0 decay neutrinos provided that both neutrino and anti-neutrino are detected. In this paper, we restudy this oscillation via quantum field theory approach. Through this approach, we find that the oscillation pattern ceases if the distance between the detectors is larger than the coherence length, while both neutrino and antineutrino states may be coherent. Also the uncertainty of source (region of Z0 decay) does not have any role in the coherency of neutrino and antineutrino.
Oscillation (cell signaling)
Cosmic neutrino background
Cite
Citations (4)