Abstract:4.8 . 10-5 eV². In the best fit point we predict for SNO: CC/NC =
and
or = 3.0 ± 0.8% (68% C.L.), and
< 6% at the 3sigma level. Further improvements in the determination of the oscillation parameters are discussed and implications of the solar neutrino and KamLAND results are considered.]]>
“…2 2θ 23 ∼ 0.98 − 1, tan 2 θ 12 ∼ 0.29 − 0.Up to here we have estimated the contribution from M ν side and this is fairly in a good approximation for estimating large mixing angles θ 23 and θ 12 . Also neutrino masses are determined from M ν only.…”
mentioning
confidence: 55%
“…Recent results from KamLAND [1] have established the Large Mixing Angle (LMA) solution [2]. Combined with the observations by Super-Kamiokande [3,4] and SNO [5], this confirms that V M N S has two large mixing angles [6,7,8] Now the question is why such a large difference can exist between the quark and lepton sectors.…”
We demonstrate that under the "symmetric zero texture" with minimal Majorana mass matrix, neutrino masses and mixing angles are expressed in terms of up-quark masses, m t , m c , m u . This provides interesting relations among neutrino mixing angles and up-type quark masses. Especially we predict |U e3 | ≤ 0.11 even if we include the small mixing effects coming from charged lepton side. Also absolute masses of three neutrinos are predicted almost uniquely. This is quite in contrast to the case where bi-large mixings come from the charged lepton sector with non-symmetric charged lepton mass matrix.
“…2 2θ 23 ∼ 0.98 − 1, tan 2 θ 12 ∼ 0.29 − 0.Up to here we have estimated the contribution from M ν side and this is fairly in a good approximation for estimating large mixing angles θ 23 and θ 12 . Also neutrino masses are determined from M ν only.…”
mentioning
confidence: 55%
“…Recent results from KamLAND [1] have established the Large Mixing Angle (LMA) solution [2]. Combined with the observations by Super-Kamiokande [3,4] and SNO [5], this confirms that V M N S has two large mixing angles [6,7,8] Now the question is why such a large difference can exist between the quark and lepton sectors.…”
We demonstrate that under the "symmetric zero texture" with minimal Majorana mass matrix, neutrino masses and mixing angles are expressed in terms of up-quark masses, m t , m c , m u . This provides interesting relations among neutrino mixing angles and up-type quark masses. Especially we predict |U e3 | ≤ 0.11 even if we include the small mixing effects coming from charged lepton side. Also absolute masses of three neutrinos are predicted almost uniquely. This is quite in contrast to the case where bi-large mixings come from the charged lepton sector with non-symmetric charged lepton mass matrix.
“…We heard on KamLand data and the solution to the solar neutrino problem, by Pedro de Holanda, from UNICAMP [4]. The KamLand results present good agreement with predictions based on solar neutrino data.…”
Section: Plenary and Parallel Talksmentioning
confidence: 73%
“…Besides the already mentioned parallel talk [4] the contributions ranged from an introductory motivational review of flavor oscillation in vacuum and matter by G. A. Valdiviesso and M. Guzzo [39] to a contribution on detection of very high energy neutrinos. In this work by C. A. de Moura Junior and M. Guzzo [40], it is shown the observational potential of the Pierre Auger Observatory to detect ν τ with E ν τ ≈ 1EeV , from Double Bang events, meaning the interaction in the atmosphere of very high energy ν from extragalactic sources, providing in some cases a second shower from τ decay.…”
Section: Oral Communications and Postersmentioning
We give a summary of contributed talks and papers in the plenary, parallel and poster sessions of the XXIV ENFPC (Brazilian National Meeting on Particles and Fields) in the area of particle phenomenology.
“…At present, these tests are limited by the lack of knowledge of θ 13 but when future measurements of that parameter are made, the unitarity of the MNSP matrix will place restrictions on possible contributions from sterile neutrinos and other physics, such as CPT violation when KamLAND data is included [25,26]. In addition, as has been pointed out by some authors [27], distortion of the energy spectrum could be possible for certain cases involving sterile neutrinos. (ii) Measurements of lower energy solar neutrinos (pp, pep, 7 Be, CNO) including realtime measurements via CC and ES reactions.…”
Section: (Iii) Search For Physics Beyond Three Active Neutrino Typesmentioning
Abstract. A review of solar neutrino experiments is provided, including experimental measurements to date and proposed future measurements. Experiments to date have provided a clear determination that solar neutrinos are undergoing flavor transformation and that the dominant mechanism for this transformation is oscillation. The mixing parameters are well defined and limits are placed on subdominant modes. The measurements also provide strong confirmation of solar model calculations. New experiments under development will study neutrino oscillation parameters and sub-dominant modes with greater precision and will investigate solar fluxes further, concentrating primarily on the low energy pp,
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