To embed the seesaw mechanism in the MSSM, two or three right-handed neutrino supermultiplets, Ni, have to be added to the model. In this framework, the supersymmetry breaking potential will include a new term called neutrino B-term: MBνÑÑ/2. In this talk, we present a toy model that generates a large neutrino B-term keeping other supersymmetry breaking parameters small. We then review the cons...

Let (H,B) be an abstract Wiener space and let μs be the Gaussian measure on B with variance s. Let ∆ be the Laplacian (not the number operator), that is, a sum of squares of derivatives associated to an orthonormal basis of H. I will show that the heat operator exp(t∆/2) is a contraction operator from L2(B,μs) to L2(B,μs−t), for all t < s. More generally, the heat operator is a contraction from...

The first motivation1 for yq collisions was indeed the study of C = +l resonances. After the pioneer works listed in Ref. 1, one can trace back from the four preceeding 7~ workshops2-5 and other high energy physics conference8 how the subject developed since this time. The theoretical concern progressively evolved from kinematical considerations (properties of the eSe+ e+e-X processes) to dynam...

This paper comprises the written version of the lectures on string theory delivered at the 31st British Universities Summer School on Theoretical Elementary Particle Physics which was held in Manchester, England, August 28 – September 12 2001.

I summarize here and discuss the results of presently operating neutrino telescopes in searching for a singnal of dark matter weakly interacting massive particles (WIMPs).

A natural explanation for the smallness of the neutrino mass requires them to be Majorana particles violating lepton number by two units. Since lepton number violation can have several interesting consequences in particle physics and cosmology, it is of utmost importance to find out if there is lepton number violation in nature and what is its magnitude. The neutrinoless double beta decay exper...

With almost 0.5 fb −1 of p¯ p-collisions delivered in Tevatron Run II, both experiments CDF and DØ are reporting first results from a vast number of search analyses. This article summarizes the current status of Tevatron searches for Higgs bosons within the Standard Model and its extensions as well as direct searches for supersymmetric particles. Signatures for production of squarks, gluinos, c...

With almost 0.5 fb −1 of p¯ p-collisions delivered in Tevatron Run II, both experiments CDF and DØ are reporting first results from a vast number of search analyses. This article summarizes the current status of Tevatron searches for Higgs bosons within the Standard Model and its extensions as well as direct searches for supersymmetric particles. Signatures for production of squarks, gluinos, c...

I give a short review of the holographic approach to quantum gravity, with emphasis on its application to deriving the properties of elementary particles.

To embed the seesaw mechanism in the MSSM, two or three right-handed neutrino supermultiplets, Ni, have to be added to the model. In this framework, the supersymmetry breaking potential will include a new term called neutrino B-term: MBνÑÑ/2. In this talk, we present a toy model that generates a large neutrino B-term keeping other supersymmetry breaking parameters small. We then review the cons...