Results 1 - 10 of 30832
Results 1 - 10 of 30832. Search took: 0.051 seconds
|Sort by: date | relevance|
[en] The Dualized Standard Model which has a number of very interesting physical consequences is itself based on the concept of a nonabelian generalization to electric-magnetic duality. This paper explains first the reasons why the ordinary (Hodge) does not give duality for the nonabelian theory and then reviews the steps by which these difficulties are surmounted, leading to a generalized duality transform formulated in loop space. The significance of this in relation to the Dualized Standard Model is explained, and possibly also to some other areas. (author)
[en] Theoretical expectations for direct and indirect searches for relic neutralinos are presented. Evaluations of event rates are discussed in different theoretical scenarios and compared with experimental capabilities of detectors for direct detection and neutrino telescopes. (author)
[en] We search for CP violation in a sample of 20,000 Cabibbo-suppressed decays, D+ → K+KS0π+π-, and 30,000 Cabibbo-favored decays, Ds+ → K+KS0π+π-. We use 520 fb-1 of data recorded by the BABAR detector at the PEP-II asymmetric-energy e+e- collider operating at center of mass energies near 10.6 GeV. We search for CP violation in the difference between the T-odd asymmetries obtained using triple product correlations of the D+ (Ds+) and D- (Ds-) decays, respectively. The T violation parameter values obtained are ΑT (D+) = (-12.0 ± 10.0stat ± 4.6syst) x 10-3 and ΑT(Ds+) = (-13.6 ± 7.7stat ± 3.4syst) x 10-3, which are consistent with the Standard Model expectations.
[en] New metastable massive particles with electric and color charge are features of many theories beyond the Standard Model. A search is performed for long-lived gluino-based R-hadrons with the ATLAS detector at the LHC using a data sample corresponding to an integrated luminosity of 31 pb-1. We search for evidence of particles that have come to rest in the ATLAS detector and decay at some later time during the periods in the LHC bunch structure without proton-proton collisions. No significant deviations from the expected backgrounds are observed, and a cross-section limit is set. It can be interpreted as excluding gluino-based R-hadrons with masses less than 341 GeV at the 95 % C.L., for lifetimes from 10-5 to 103 seconds and a neutralino mass of 100 GeV.
[en] These lectures aim at providing a pedagogical overview of neutrino physics. We will mostly deal with standard neutrinos, the ones that are part of the Standard Model of particle physics, and with their standard dynamics, which is enough to understand in a coherent picture most of the rich data available. After introducing the basic theoretical framework, we will illustrate the experimental determination of the neutrino parameters and their theoretical implications, in particular for the origin of neutrino masses. (author)