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[en] The OPERA experiment was designed to search for νμ → ντ oscillations in appearance mode, i.e. by detecting the τ leptons produced in charge current ντ interactions. The experiment took data from 2008 to 2012 in the CNGS beam. Five observed ντ candidates together with low background 0.25 ± 0.05 allow to assess the discovery of νμ → ντ oscillations in appearance mode with significance larger than 5σ.
[en] A search for inclusive nu/sub μ/ or anti nu/sub μ/ oscillations has been performed in the Fermilab narrow band neutrino beam using two detectors running simultaneously at two distances from the neutrino source. The data show no evidence for either nu/sub μ/ or anti nu/sub μ/ oscillations and rule out oscillations of nu/sub μ/ or anti nu/sub μ/ into any other single type of /nu for 15 < Δm2 < 1000 eV2/c4 and sin2(2theta) > 0.02 - 0.40
[en] Recent theoretical results on charged particle interaction with planarly oriented thin bent crystals are reviewed, with the emphasis on dynamics in the continuous potential. Influence of boundary conditions on the volume-reflected beam profile is discussed. Basic properties of coherent bremsstrahlung in a bent crystal are highlighted.
[en] The existence of a bound state of five quarks with c-bar content is still controversial. In this paper we focus on weakly decaying charmed pentaquarks and show how they can be searched for in high energy anti-neutrino interactions. By analyzing 2262 charged-current interactions with a muon of positive charge in the CHORUS detector, we performed a search for Θc0 production. Based on the null observation, the limit of Θc0 production is found as a function of different Θc0 lifetimes. The tightest bound is σΘc0/σν-bar<0.039 at 90% C.L. for Θc0 lifetime equal to 0.5τD0. We outline also the excellent potentiality of such a search at a neutrino factory with an emulsion detector
[en] Three possible settings are considered for the question of two interacting charged conducting balls: (1) both balls are kept at constant and equal potentials; (2) one ball is charged and isolated, the other is kept at a constant potential with the same sign as the first, and (3) both balls are like charged and isolated. It is shown that fundamentally different problems generally arise here: whereas in the first case the balls always repel, in the second and third cases fairly wide ranges of radius and charge ratios can always be found in which the balls attract each other at close distances. These ranges are identified in the paper. The results are presented of experiments that demonstrate both the repulsion and attraction of like-charged balls. Theory and experiment show satisfactory agreement, both qualitatively and quantitatively. (methodological notes)
[en] This thesis presents results of the MINOS long baseline neutrino oscillation experiment. Charged Current interactions of νμ from the NuMI beamline have been recorded in both the Near and Far Detectors between May 2005 and February 2006, corresponding to 1.27 x 1020 protons being delivered to the NuMI target. Several techniques for improving the sensitivity of an oscillation measurement are discussed and their impact assessed. 378 events are observed in the Far Detector during this period, compared to a prediction of 459 ± 31 events are observed in the Far Detector during this period, compared to a prediction of 459 ± 31 events when the observed Near Detector spectrum is extrapolated to the Far Detector over the 735 km baseline with no oscillations. In addition to this deficit of observed events, there is also evidence for spectral distortion in the Far Detector. A maximum likelihood analysis is used to determine the best fit point and allowed regions in Δm223 and sin22θ23 parameter space. The best fit values for Δm223 and sin22θ23 are found to be 2.55+0.39-0.24 x 10-3 eV2 and > 0.87 (68% CL) respectively
[en] NOνA is a long-baseline neutrino experiment using an off-axis neutrino beam produced by the NuMI neutrino beam at Fermilab. The NOνA experiment will study neutrino νμ → νe oscillations. A short term goal for the NOνA experiment is to develop a good understanding of the response of the detector. These studies are being carried out with the full Near Detector installed on the surface (NDOS) at Fermilab. This detector is currently running and will acquire neutrino data for a year. Using beam muon neutrino data, quasi-elastic charged-current interactions will be studied. Status of the NDOS running and early data will be shown.
[en] We present MiniBooNE's preliminary νμCC1π+ cross section measurement, calculated using the ratio of CC1π+ to CCQE events. We find the inclusive CC1π+ measurement to be below the nuance [D. Casper, Nucl. Phys. Proc. Suppl. 112, 161 (2002), hep-ph/0208030] and NEUGEN [H. Gallagher, Nucl. Phys. Proc. Suppl. 112 (2002) 188] expectations