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Articoli di riviste sul tema "Taux de neutrinos"

Autore: Grafiati

Pubblicato: 25 gennaio 2025

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1

JONES, J., I. MOCIOIU, I. SARCEVIC e M. H. RENO. "ULTRAHIGH ENERGY TAU NEUTRINOS". International Journal of Modern Physics A 20, n. 19 (30 luglio 2005): 4656–63. http://dx.doi.org/10.1142/s0217751x0502834x.

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We study ultrahigh energy astrophysical neutrinos and the contribution of tau neutrinos from neutrino oscillations, relative to the contribution of the other flavors. We show the effect of tau neutrino regeneration and tau energy loss as they propagate through the Earth. We consider a variety of neutrino fluxes, such as cosmogenic neutrinos and neutrinos that originate in Active Galactic Nuclei. We discuss signals of tau neutrinos in detectors such as IceCube, RICE and ANITA.

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2

JONES, J., I. MOCIOIU, I. SARCEVIC e M. H. RENO. "TRACING VERY HIGH ENERGY TAU NEUTRINOS FROM COSMOLOGICAL SOURCES IN ICE". International Journal of Modern Physics A 20, n. 06 (10 marzo 2005): 1204–11. http://dx.doi.org/10.1142/s0217751x05024092.

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Astrophysical sources of ultrahigh energy neutrinos yield tau neutrino fluxes due to neutrino oscillations. We study in detail the contribution of tau neutrinos with energies above 106 GeV relative to the contribution of the other flavors. We consider several different initial neutrino fluxes and include tau neutrino regeneration in transit through the Earth and energy loss of charged leptons. We discuss signals of tau neutrinos in detectors such as IceCube, RICE and ANITA.

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3

Wissel, Stephanie, Jaime Alvarez-Muñiz, Washington R. Carvalho, Andrés Romero-Wolf, Harm Schoorlemmer e Enrique Zas. "A New Concept for High-Elevation Radio Detection of Tau Neutrinos". EPJ Web of Conferences 216 (2019): 04007. http://dx.doi.org/10.1051/epjconf/201921604007.

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Cosmic neutrinos are expected to include a significant flux of tau neutrinos due to flavor mixing over astronomical length scales. However, the tau-neutrino content of astrophysical neutrinos is poorly constrained and a significant flux of cosmogenic tau neutrinos awaits discovery. Earth-skimming tau neutrinos undergo charged-current interactions that result in a tau lepton exiting the Earth. The tau lepton decay generates anextensive air shower and geomagnetic radio emission. To target the tau neutrinos, we present a new tau neutrino detector concept that uses phased antenna arrays placed on high elevation mountains. Simulation studies indicate that a modest array size and small number of stations can achieve competitive sensitivity, provided the receivers are at highs enough elevation.

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4

ATHAR, H. "ATMOSPHERIC AND GALACTIC TAU NEUTRINOS". Modern Physics Letters A 19, n. 13n16 (30 maggio 2004): 1171–78. http://dx.doi.org/10.1142/s0217732304014525.

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Neutrinos with energy greater than GeV are copiously produced in the p(A,p) interactions occurring in the earth atmosphere and in our galactic plane. A comparison of the tau and mu neutrino flux in the presence of neutrino oscillations from these two astrophysical sites is presented. It is pointed out that the galactic plane tau neutrino flux dominates over the downward going atmospheric tau neutrino flux at much lower energy value than that for the dominance of the mu neutrino flux from these two sites. Future prospects for possible observations of galactic tau neutrino flux are also briefly mentioned.

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5

Miloi, Mădălina Mihaela. "The DsTau Experiment: A Study for Tau-Neutrino Production". Particles 3, n. 1 (1 marzo 2020): 164–68. http://dx.doi.org/10.3390/particles3010013.

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For clarifying the validity of the Lepton Universality hypothesis, one of the fundamental statements of the Standard Model, the interaction cross section for all three flavors of leptons have to be known with high precision. In neutrino sector, for electron and muon neutrinos, the interaction cross section is known fairly well, but for tau neutrino only poor estimations exist. In particular, the most direct measurement by the DONuT experiment was performed with rather poor accuracy due to low statistics and an uncertainty of the tau neutrino flux. The DsTau experiment proposes to study tau-neutrino production process and thus to improve significantly the accuracy of calculations of tau neutrino flux for neutrino accelerator experiments. To study reactions providing most of tau neutrinos, the experiment uses a setup based on high resolution nuclear emulsions, capable to register short lived particle decays created in proton-nucleus interactions. The present report is an overview of the DsTau experiment together with some of the preliminary results from the pilot run.

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6

Kato, Tokufumi. "Tau Neutrino Appearance in Atmospheric Neutrinos". Nuclear Physics B - Proceedings Supplements 221 (dicembre 2011): 356. http://dx.doi.org/10.1016/j.nuclphysbps.2011.10.006.

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7

De Lellis, Giovanni, Sergey Dmitrievsky, Giuliana Galati, Artemis Lavasa, Tibor Šimko, Ioannis Tsanaktsidis e Andrey Ustyuzhanin. "Dataset of tau neutrino interactions recorded by the OPERA experiment". EPJ Web of Conferences 245 (2020): 08013. http://dx.doi.org/10.1051/epjconf/202024508013.

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Abstract (sommario):

We describe the dataset of very rare events recorded by the OPERA experiment. The events represent tracks of particles associated with tau neutrino interactions coming from the transformation of muon neutrinos due to a process known as neutrino oscillations. The events have been published on the CERN Open Data Portal. We describe the dataset semantics and the interactive event display visualisation tool accompanying the data release.

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8

GNINENKO, S. N. "ON MIXING ANGLES AND MAGNETIC MOMENT OF HEAVY TAU NEUTRINO". Modern Physics Letters A 13, n. 22 (20 luglio 1998): 1791–94. http://dx.doi.org/10.1142/s0217732398001868.

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If the magnetic moment of unstable tau neutrinos with the mass of 0(MeV) is in the region of 10-8μB≲ μντ≲ 10-6μB, it is compatible with the present experimental and cosmological bounds. We point out that if the tau neutrino has such a large magnetic moment and can oscillate into a neutrino of another flavor, the results from νe scattering experiment at LAMPF constrain the tau neutrino mixing angles to sin 2 2θeτ≲ 2 × 10-6-2 × 10-2 and sin 2 2θμτ ≲ 10-6-10-2 depending on the magnetic moment value in the allowed region.

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9

LIU, CHUN. "CONFRONTING HEAVY TAU NEUTRINOS WITH NEUTRINO OSCILLATIONS". Modern Physics Letters A 16, n. 26 (30 agosto 2001): 1699–702. http://dx.doi.org/10.1142/s0217732301005023.

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If the tau neutrino is as heavy as 10 MeV which may have certain astrophysical implications, the neutrino mass pattern is studied so as to accommodate the new oscillation observations. It predicts that the electron neutrino has Marjorana mass around 0.05 eV. A supersymmetric model is described to realize the above scenario.

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10

Chandra Raju, C. v. a. v. b. "Tau and M-Neutrino and All Massive Leptons". Annals of Computational Physics and Material Science 1, n. 2 (9 maggio 2024): 01–08. http://dx.doi.org/10.33140/acpms.01.02.02.

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The mass eigenstates of the electron and muon neutrinos are built from the existing left -handed neutrino wave functions and these mass eigen states acquire mass through their interaction with the same Higgs field as their electrically charged partners. The above scheme requires, existence of another massive Mneutrino along -with an electrically charged massive M-Lepton to account for the tau family

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11

Fukuda, S., Y. Fukuda, M. Ishitsuka, Y. Itow, T. Kajita, J. Kameda, K. Kaneyuki et al. "Tau Neutrinos Favored over Sterile Neutrinos in Atmospheric Muon Neutrino Oscillations". Physical Review Letters 85, n. 19 (6 novembre 2000): 3999–4003. http://dx.doi.org/10.1103/physrevlett.85.3999.

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12

Abraham, Roshan Mammen, Jaime Alvarez-Muñiz, Carlos A. Argüelles, Akitaka Ariga, Tomoko Ariga, Adam Aurisano, Dario Autiero et al. "Tau neutrinos in the next decade: from GeV to EeV". Journal of Physics G: Nuclear and Particle Physics 49, n. 11 (11 ottobre 2022): 110501. http://dx.doi.org/10.1088/1361-6471/ac89d2.

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Abstract Tau neutrinos are the least studied particle in the standard model. This whitepaper discusses the current and expected upcoming status of tau neutrino physics with attention to the broad experimental and theoretical landscape spanning long-baseline, beam-dump, collider, and astrophysical experiments. This whitepaper was prepared as a part of the NuTau2021 Workshop.

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13

Manganaro, Marina, Leonora Kardum, Elisa Bernardini, Michele Doro, Dariusz Gora, Saša Micanović, Tomislav Terzić e Martin Will. "Search for tau neutrinos with the MAGIC telescopes: improving selection criteria*". EPJ Web of Conferences 209 (2019): 01005. http://dx.doi.org/10.1051/epjconf/201920901005.

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MAGIC, a system of two Cherenkov telescopes located at the Roque de los Muchachos Observatory (2200 a.s.l.) in the Canary Island of La Palma, has lately been engaged in an unconventional task: the search for a signature of particle showers induced by earth-skimming cosmic tau neutrinos arising from the ocean, in the PeV to EeV energy range. When pointing at the sea, the MAGIC telescopes can collect data in a range of about 5 deg in zenith and 80 deg in azimuth: the analysis of the shower images from ~30 hours of data, together with the simulations of upward-going tau neutrino showers, shows that the air showers induced by tau neutrinos can be discriminated from the hadronic background coming from a similar direction. We have calculated the point source acceptance and the expected event rates, assuming an incoming v flux consistent with IceCube measurements, and for a sample of generic neutrino fluxes from photohadronic interactions in AGNs and GRBs. A 90% C.L. upper limit on the tau-neutrino point source flux of 2.0 × 10–4 GeV cm–2 s–1 has been obtained. The presented results can also be important for future Cherenkov experiments such as the Cherenkov Telescope Array. This next generation ground-based observatory can have a much better possibility to detect v, given its larger FOV and much larger effective area.

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14

Huang, Guo-Yuan, Sudip Jana, Manfred Lindner e Werner Rodejohann. "Probing new physics at future tau neutrino telescopes". Journal of Cosmology and Astroparticle Physics 2022, n. 02 (1 febbraio 2022): 038. http://dx.doi.org/10.1088/1475-7516/2022/02/038.

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Abstract We systematically investigate new physics scenarios that can modify the interactions between neutrinos and matter at upcoming tau neutrino telescopes, which will test neutrino-proton collisions with energies ≳ 45 TeV, and can provide unique insights to the elusive tau neutrino. At such high energy scales, the impact of parton distribution functions of second and third generations of quarks (usually suppressed) can be comparable to the contribution of first generation with small momentum fraction, hence making tau neutrino telescopes an excellent facility to probe new physics associated with second and third families. Among an inclusive set of particle physics models, we identify new physics scenarios at tree level that can give competitive contributions to the neutrino cross sections while staying within laboratory constraints: charged/neutral Higgs and leptoquarks. Our analysis is close to the actual experimental configurations of the telescopes, and we perform a χ2-analysis on the energy and angular distributions of the tau events. By numerically solving the propagation equations of neutrino and tau fluxes in matter, we obtain the sensitivities of representative upcoming tau neutrino telescopes, GRAND, POEMMA and Trinity, to the charged Higgs and leptoquark models. While each of the experiments can achieve a sensitivity better than the current collider reaches for certain models, their combination is remarkably complementary in probing the new physics. In particular, the new physics will affect the energy and angular distributions in different ways at those telescopes.

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15

Orloff, J., A. Rozanov e C. Santoni. "Limits on the mixing of tau neutrino to heavy neutrinos". Physics Letters B 550, n. 1-2 (dicembre 2002): 8–15. http://dx.doi.org/10.1016/s0370-2693(02)02769-7.

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16

Bugaev, E. V., T. Montaruli e I. A. Sokalski. "Astrophysical tau neutrinos and their detection by large neutrino telescopes". Physics of Atomic Nuclei 67, n. 6 (giugno 2004): 1177–81. http://dx.doi.org/10.1134/1.1772455.

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17

Gornushkin, Yu. "Study of Tau Neutrino Production in Proton Nucleus Interactions". Ukrainian Journal of Physics 64, n. 7 (17 settembre 2019): 577. http://dx.doi.org/10.15407/ujpe64.7.577.

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Abstract (sommario):

In the DsTau experiment at the CERN SPS, an independent direct way to study the tau neutrino production in high energy proton-nucleous interactions was proposed. Since the main source of tau neutrinos is a decay of Ds mesons, the project aims at measuring the differential cross-section of this reaction. The experimental method is based on the use of high-resolution emulsion detectors for the efficient registration of events with short-lived particle decays. The motivation of the project, details of the experimental technique, and the first results of the analysis of the data collected during test runs, which prove the feasibility of the study are presented.

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18

Vasina, S. "Study of tau neutrino production with nuclear emulsion at CERN-SPS". Journal of Physics: Conference Series 2156, n. 1 (1 dicembre 2021): 012149. http://dx.doi.org/10.1088/1742-6596/2156/1/012149.

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Abstract The tau neutrino interaction cross-section was directly measured in the DONuT experiment but it suffers from a large systematic (∼50%) and statistical (∼30%) errors. The main source of the systematic error was due to poor knowledge of the tau neutrino flux. The DsTau experiment at CERN-SPS has been proposed to measure an inclusive differential cross-section of the Ds production with a consecutive decay to tau lepton in p-A interactions, which is a main source of tau neutrinos in neutrino beams at accelerators. The search for Ds → τ → X decay is challenging due to milimetric range of Ds and τ decay lengths and a small angle between them of the order of few mrad. Nevertheless a precise measurement is possible with the use of nuclear emulsion providing a sub-micron spatial resolution. The experiment is aiming to collect 2.3 × 108 proton interactions in the tungsten target, and to detect ∼ 1000 Ds → τ → X decays. DsTau successfully performed a pilot run in 2018 collecting ∼10% of the full data and was approved as NA65 in 2019. The results from the pilot run are presented in this paper and the prospect for physics runs in 2021–2022 are given.

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19

Boussaha, Bouzid, e Tariq Bitam. "Earth-Skimming Ultrahigh Energy Tau Neutrinos Simulated with Monte Carlo Method and CONEX Code". Advances in High Energy Physics 2021 (18 novembre 2021): 1–7. http://dx.doi.org/10.1155/2021/9987060.

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This paper is aimed at studying the feasibility of building an Earth-skimming cosmic tau neutrinos detector, with the aim of eventually identifying the ideal dimensions of a natural site mountain-valley for the detection of very high energy neutrinos tau range from 1 0 16 eV to 1 0 20 eV , as well as possibly locate one such site in Algeria. First, a Monte Carlo simulation of the neutrino-[mountain] matter interaction as well as the resulting decay of the tau lepton is conducted to determine the optimal dimensions of the mountain as well as the location of the tau decay in the valley. Second, a CORSIKA (COsmic Ray Simulation for KAscade) simulation with the CONEX option is conducted to track the evolution of the almost horizontal air shower initiated by the tau lepton. Many particles are produced, which are part of the shower components: electrons, muons, gammas, pions, etc. The study of the spatial distribution of these particles enables the discovery of the optimal width of the valley, and consequently, the distance at which to lay the detection network.

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20

Liu, Chun, e Jeonghyeon Song. "Scenario of light sterile neutrinos with a heavy tau neutrino in a supersymmetric model". Nuclear Physics B 598, n. 1-2 (marzo 2001): 3–12. http://dx.doi.org/10.1016/s0550-3213(00)00767-7.

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21

Buras, Robert, Hans‐Thomas Janka, Mathias Th Keil, Georg G. Raffelt e Markus Rampp. "Electron Neutrino Pair Annihilation: A New Source for Muon and Tau Neutrinos in Supernovae". Astrophysical Journal 587, n. 1 (10 aprile 2003): 320–26. http://dx.doi.org/10.1086/368015.

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22

Dova, M. T., L. N. Epele, H. Fanchiotti, C. A. García Canal, P. E. Lacentre e J. D. Swain. "A method to determine the tau neutrino helicity using polarized taus". Physics Letters B 366, n. 1-4 (gennaio 1996): 360–64. http://dx.doi.org/10.1016/0370-2693(95)01385-7.

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23

Huege, T., e O. Krömer. "Broad-band, high-gain, low-frequency antennas for radio detection of earth-skimming tau neutrinos". Journal of Instrumentation 19, n. 11 (1 novembre 2024): P11022. http://dx.doi.org/10.1088/1748-0221/19/11/p11022.

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Abstract (sommario):

Abstract A promising approach to detect high-energy tau neutrinos is through the measurement of impulsive radio emission from horizontal air showers initiated in the Earth's atmosphere. Observations at frequencies between 30 and 80 MHz seem particularly promising — if high-gain antennas focused at the horizon and blocking out as much as possible of the noisy sky are employed. Due to the large wavelengths, however, designing an antenna with the required properties is highly non-trivial at such low frequencies. In this article, we explore suitable antenna designs that provide the desired high gain, possess a smooth beam, are insensitive to ground conditions, are easily impedance-matched over the wide band, and are mechanically simple for deployment in large numbers in inaccessible terrain. In particular, we consider the “rhombus” antenna design for both horizontally and vertically polarized radiation a very attractive option for tau neutrino detection efforts in the atmosphere with the radio technique.

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24

FOOT, R., e H. LEW. "MINI-CHARGED TAU NEUTRINOS?" Modern Physics Letters A 08, n. 39 (21 dicembre 1993): 3767–72. http://dx.doi.org/10.1142/s0217732393003500.

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Theoretically, the electric charge of the tau neutrino may be nonzero. The experimental bound on the electric charge of the tau neutrino is many orders of magnitude weaker than that for any other known neutrino. If the tau neutrino does have a small electric charge, and its mass is greater than 1 MeV, then it can annihilate sufficiently in the early universe by electromagnetic interactions to avoid conflict with the standard cosmology model. A novel feature of this scenario is that there can be effectively less than three neutrino species present during nucleosynthesis.

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25

Collins, Graham P. "The Tau of Neutrinos". Scientific American 283, n. 4 (ottobre 2000): 28. http://dx.doi.org/10.1038/scientificamerican1000-28a.

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26

MacGibbon, Jane H., e Ubi F. Wichoski. "High energy tau neutrinos". Nuclear Physics B - Proceedings Supplements 110 (luglio 2002): 528–30. http://dx.doi.org/10.1016/s0920-5632(02)01556-6.

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27

MacGibbon, J. "High energy tau neutrinos". Nuclear Physics B - Proceedings Supplements 110, n. 2 (luglio 2002): 528–30. http://dx.doi.org/10.1016/s0920-5632(02)80200-6.

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28

Cowen, D. F., e the IceCube Collaboration. "Tau Neutrinos in IceCube". Journal of Physics: Conference Series 60 (1 marzo 2007): 227–30. http://dx.doi.org/10.1088/1742-6596/60/1/048.

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29

Grant, Andrew. "Cosmic tau neutrinos uncovered". Physics Today 2024, n. 04 (4 aprile 2024): .qkfo. http://dx.doi.org/10.1063/pt.ugmx.qkfo.

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30

Astier, P., D. Autiero, A. Baldisseri, M. Baldo-Ceolin, M. Banner, G. Bassompierre, K. Benslama et al. "Search for heavy neutrinos mixing with tau neutrinos". Physics Letters B 506, n. 1-2 (maggio 2001): 27–38. http://dx.doi.org/10.1016/s0370-2693(01)00362-8.

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31

Beacom, J. F., R. N. Boyd e A. Mezzacappa. "Technique for Direct eV-Scale Measurements of the Mu and Tau Neutrino Masses Using Supernova Neutrinos". Physical Review Letters 85, n. 17 (23 ottobre 2000): 3568–71. http://dx.doi.org/10.1103/physrevlett.85.3568.

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32

Gyuk, Geza, e Michael S. Turner. "MeV Tau Neutrino:". Nuclear Physics B - Proceedings Supplements 40, n. 1-3 (marzo 1995): 557–67. http://dx.doi.org/10.1016/0920-5632(95)00179-d.

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33

Takahara, Mariko, e Katsuhiko Sato. "SN1987A and Constraint on the Mass and Lifetime of Tau Neutrinos". International Astronomical Union Colloquium 108 (1988): 428–29. http://dx.doi.org/10.1017/s0252921100094264.

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Abstract (sommario):

Recently it has been suggested that neutrinos have nonvanishing mass from both experimental and theoretical investigations. Accelerator experiments and cosmology, however, impose the constraints on mass mv and lifetime τv of vτ (see Fig. 1). As we showed in the previous paper [1], supernova explosion also imposes the stringent constraint on them. The purpose of this paper is to investigate the constraint imposed on mv and τv of vτ from SN1987A.Tau neutrinos are emitted from the central part of the iron core together with the electron neutrinos because they are also in thermal equilibrium with matter there.

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34

Husain, Athar. "High energy cosmic tau neutrinos". Nuclear Physics B - Proceedings Supplements 87, n. 1-3 (giugno 2000): 442–44. http://dx.doi.org/10.1016/s0920-5632(00)00717-9.

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35

Abachi, S., P. Baringer, B. G. Bylsma, R. De Bonte, D. Koltick, F. J. Loeffler, E. H. Low et al. "Tau-neutrino mass limit". Physical Review D 35, n. 9 (1 maggio 1987): 2880–82. http://dx.doi.org/10.1103/physrevd.35.2880.

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36

JANG, DONGWOOK. "Search for MSSM Higgs Decaying to Tau Pairs". International Journal of Modern Physics A 20, n. 15 (20 giugno 2005): 3314–16. http://dx.doi.org/10.1142/s0217751x05026431.

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Abstract (sommario):

We present the results of a search for a neutral MSSM Higgs boson decaying to a pair of tau leptons. The analyzed data sample corresponds to integrated luminosity of approximately 200 pb-1 of [Formula: see text] collisions at [Formula: see text]. It was collected by the CDF detector during Run 2 of the Fermilab Tevatron. We select tau pairs in which one of the taus decays hadronically and the other to e or μ and neutrinos. We see no evidence of signal and perform a fit to the (partially) reconstructed di-tau mass to set limits on the product of Higgs production cross-section and its branching fraction to taus.

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37

Husain, Athar. "Tau neutrinos from active galactic nuclei". Nuclear Physics B - Proceedings Supplements 76, n. 1-3 (aprile 1999): 419–24. http://dx.doi.org/10.1016/s0920-5632(99)00503-4.

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38

Gribanov, Vladimir, Sergey Kovalenko e Ivan Schmidt. "Sterile neutrinos in tau lepton decays". Nuclear Physics B 607, n. 1-2 (luglio 2001): 355–68. http://dx.doi.org/10.1016/s0550-3213(01)00169-9.

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39

Athar, H., e C. S. Kim. "GeV to TeV astrophysical tau neutrinos". Physics Letters B 598, n. 1-2 (settembre 2004): 1–7. http://dx.doi.org/10.1016/j.physletb.2004.07.022.

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40

Barenboim, Gabriela, e Florian Scheck. "Tau neutrinos from muon storage rings". Physics Letters B 485, n. 1-3 (luglio 2000): 171–77. http://dx.doi.org/10.1016/s0370-2693(00)00708-5.

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41

Kowalski, Marek. "Tracing tau-neutrinos from WIMP-annihilation". Physics Letters B 511, n. 2-4 (luglio 2001): 119–28. http://dx.doi.org/10.1016/s0370-2693(01)00629-3.

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42

Kohri, Kazunori. "Detecting the Earth-Skimming Tau Neutrinos". Journal of the Physical Society of Japan 77, Suppl.B (2 gennaio 2008): 101–2. http://dx.doi.org/10.1143/jpsjs.77sb.101.

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43

GIUDICE, G. F. "TAU NEUTRINOS AND COLD DARK MATTER". Modern Physics Letters A 06, n. 10 (28 marzo 1991): 851–54. http://dx.doi.org/10.1142/s0217732391000889.

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Abstract (sommario):

Neutrinos with standard weak interactions are possible hot dark matter candidates, but they cannot provide an explanation for a cold dark matter scenario, because of constraints from relic abundance. It is shown here, however, that a stable ντ with a mass in the range 1–35 MeV and a magnetic moment of 10−6 Bohr magnetons is a possible candidate for a cold dark matter particle. This hypothesis can be experimentally tested in the near future.

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Hagiwara, K., K. Mawatari e H. Yokoya. "Tau polarization in tau-neutrino nucleon scattering". Nuclear Physics B 668, n. 1-2 (settembre 2003): 364–84. http://dx.doi.org/10.1016/s0550-3213(03)00575-3.

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45

AHN, Y. H., SIN KYU KANG, C. S. KIM e T. PHONG NGUYEN. "MU-TAU REFLECTION SYMMETRY AND RADIATIVELY GENERATED LEPTOGENESIS". International Journal of Modern Physics A 24, n. 18n19 (30 luglio 2009): 3660–67. http://dx.doi.org/10.1142/s0217751x09047326.

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We consider an exact µ-τ reflection symmetry in neutrino sector realized at the GUT scale in the context of the seesaw model with and without supersymmetry. It is shown that the renormalization group (RG) evolution from the GUT scale to the seesaw scale gives rise to breaking of the µ-τ symmetry which is essential to achieve a successful leptogenesis. We show that CP violation responsible for the generation of baryon asymmetry of our universe can be directly linked with CP violation measurable through neutrino oscillation as well as neutrino mixing angles θ12 and θ13.

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46

Winter, K. "Detection of the tau-neutrino". Acta Physica Hungarica 68, n. 1-2 (settembre 1990): 135–43. http://dx.doi.org/10.1007/bf03054202.

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47

Lundberg, B., K. Niwa e V. Paolone. "OBSERVATION OF THE TAU NEUTRINO". Annual Review of Nuclear and Particle Science 53, n. 1 (dicembre 2003): 199–218. http://dx.doi.org/10.1146/annurev.nucl.53.041002.110555.

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48

Tzanakos, George S. "Properties of the Tau-Neutrino". Nuclear Physics B - Proceedings Supplements 221 (dicembre 2011): 299–306. http://dx.doi.org/10.1016/j.nuclphysbps.2011.09.020.

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49

Hettlage, Christian, e Karl Mannheim. "Tau events in neutrino telescopes". Nuclear Physics B - Proceedings Supplements 95, n. 1-3 (aprile 2001): 165–68. http://dx.doi.org/10.1016/s0920-5632(01)01076-3.

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50

Barish, B. "Tau neutrino physics: an introduction". Nuclear Physics B - Proceedings Supplements 98, n. 1-3 (aprile 2001): 12–25. http://dx.doi.org/10.1016/s0920-5632(01)01190-2.

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