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Sara Lucatello03/12/2007, 09:00The low end of the Galaxy halo stellar metallicity distribution is characterized by the presence of a large population of peculiar composition objects. In particular, a large fraction of very metal poor stars show large overabundances in C. It is estimated that at least 20% of stars with [Fe/H]<-2 have [C/Fe]>1, and such fraction likely increases with decreasing metallicity (the...Go to contribution page
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Martin Asplund03/12/2007, 09:45I will describe how the chemical compositions of stars can be used to probe stellar, galactic and cosmic evolution. Besides tracing things like stellar nucleosynthesis and the history of the Milky Way Galaxy and its different stellar populations, the elemental information imprinted in stellar spectra can also shed light on for example the baryon density of the Universe and...Go to contribution page
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Roland Diehl03/12/2007, 10:05Massive stars are major agents to influence their surrounding gas: Winds and supernovae blow cavities and inject turbulence, and also eject freshly- produced and partially radioactive isotopes, ionizing radiation produces free electrons. We discuss how we can test our understanding of these processes on astronomical observations.Go to contribution page
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Oleg Andreev03/12/2007, 11:00The thermodynamic properties of a gauge theory without quarks are derived using a string (gravity) formulation for a temperature window 1.2 T_c – 3 T_c. The results are in good agreement with available lattice simulations. As a cross-check, we calculate the spatial string tension. Finally, we make some predictions about SU(N) gauge theories.Go to contribution page
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Franz von Feilitzsch03/12/2007, 11:45BOREXINO, a detector for low energy neutrinos, is operational since summer 2007. The experiment is aiming for low energy solar neutrinos, supernova neutrinos, and terrestrial antineutrinos. The performance of the detector is as well a basis for the design of the next generation neutrino detection in LAGUNA, and in particular for LENA (low energy neutrino astronomy). The latest...Go to contribution page
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Kazushi Iwasawa03/12/2007, 14:00NGC4395 harbors the lowest luminosity type-I AGN, known to exhibit strong X-ray variability, in a bulge- less dwarf host. The low black hole mass (~10^5 solar masses) makes this object of great interest for the formation of massive black holes and the mass- scaling of AGN phenomena. We observed NGC4395 with Suzaku for the net exposures of 100 ks and 83 ks with the XIS and the...Go to contribution page
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Thomas Kruehler03/12/2007, 14:20It is general believe that long Gamma Ray Bursts (GRBs) are connected to the death of very massive stars and are detectable up to redshifts of 15 to 20. However, identifying GRB afterglows at high redshifts remained difficult as it requires rapid and sensitive near-IR capabilities. I will introduce the Gamma Ray Burst Optical and Near Infrared Detector (GROND), an imager capable...Go to contribution page
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Marcella Brusa03/12/2007, 14:45One of the main goals of the XMM-Newton COSMOS survey is to provide a comprehensive characterization of the multiwavelength properties of AGN selected in the X-rays over a wide range of redshift and luminosities, and eventually, build up the first bolometric selected AGN sample, fulfilling the promise of many years of multi-wavelength studies of quasars. Here I present the...Go to contribution page
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Stefanie Phleps03/12/2007, 16:00In the coming years a number of very wide angle, deep surveys will enable us to carry out detailed analyses of the large scale distribution of galaxies, that have not been feasible before, and a wealth of information about the nature of the universe - its mass content, the ratio of luminous to dark matter, and last not least its dark energy density - is encrypted in the...Go to contribution page
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Sabine Roth03/12/2007, 16:20Weakly Interacting Massive Particles (WIMPs) are candidates for non-baryonic Dark Matter. WIMPs are supposed to interact with baryonic matter via scattering off nuclei producing a nuclear recoil with energies of a few 10 keV with a very low interaction rate of ≤10−6 events per kg of target material and day in the energy region of interest. The Dark Matter experiments CRESST...Go to contribution page
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Guido Altarelli03/12/2007, 17:15We present a concise review of the most fundamental questions in particle physics that will be explored at the LHC, together with a discussion of the current ideas on possible solutions of these issues.Go to contribution page
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Luca Martucci04/12/2007, 09:00String theory predicts the existence of dynamical extended objects called D-branes, which can be seen as electric or magnetic sources of corresponding fluxes and, at low energy, are described by (non- abelian) gauge theories. D-branes and fluxes enter many string theory models of an effective four- dimensional physical universe and in particular those with minimal supersymmetry,...Go to contribution page
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Sandra Horvat04/12/2007, 09:45The Standard Model of particle physics predicts the existence of a new, so far unobserved particle, the Higgs boson needed to explain particle masses different from zero. The ATLAS experiment has been designed to search for the Higgs boson over its full allowed mass range from 114 to about 800 GeV in proton-proton collisions of 14 TeV center-of-mass energy at the Large Hadron...Go to contribution page
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Bela Majorovits04/12/2007, 10:10Neutrinoless double-beta-decay could be the key to understanding the nature of the neutrino: If observed it would prove its Majorana-nature and the half-life of the decay would be a direct measure of the yet unknown absolute scale of the neutrino mass. The GErmanium Detector Array (GERDA) at the Gran Sasso Underground Laboratory in Italy is designed to search for neutrinoless...Go to contribution page
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Kai Schmidt-Hoberg04/12/2007, 11:00We study dark matter for gaugino-mediated supersymmetry breaking and extra dimensions of order the grand unification scale. At different points in parameter space, the gravitino, a neutralino or a scalar lepton can be the lightest or next-to-lightest superparticle. We investigate constraints from primordial nucleosynthesis on the different scenarios.Go to contribution page
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Steve Blanchet04/12/2007, 11:25The recent understanding of flavor effects in thermal leptogenesis modified the conventional picture in many aspects. One of them is the role played by the CP violating phases in the lepton mixing matrix. As I will show, it turns out that both the Dirac and the Majorana phases can be the unique source of CP violation required to explain the origin of the matter- antimatter...Go to contribution page
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Wolfgang Hollik04/12/2007, 11:45Higgs bosons contribute as virtual states through quantum corrections to the predictions for precision observables in the electroweak theory. Precision data thus constrain the mass of the Higgs boson. Recent improvements in the calculation of electroweak precision observables are discussed that have considerable impact to pinning down the Higgs boson mass and to set the stage for...Go to contribution page
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Gerhard Buchalla04/12/2007, 12:10Rare and CP violating decays of B mesons test and constrain ideas in flavour physics beyond the standard model. Sensitivity to new physics requires the control of strong interaction effects described by QCD. For this purpose the factorization of amplitudes for exclusive B decays provides a useful framework. Current topics and applications will be discussed.Go to contribution page
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Jesper Sommer-Larsen04/12/2007, 14:00From observations of the cosmic star-formation history, as probed by young galaxies at z>3 (that is during the first 15% of the age of the Universe), one can infer the cosmic density of heavy elements, like Oxygen and Iron, expected by z~3. However, searches for such metals at z~3 have only been able to account for 10-20% of the amount expected - this has been coined 'the Missing...Go to contribution page
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Björn Duling04/12/2007, 14:45Little Higgs models offer an alternative way to the solution of the little hierarchy problem. Particularly interesting is the Littlest Higgs model with T-parity (LHT). The talk's main attention is paid to the motivation of the LHT and an analysis of the impact of the additional particles introduced in the framework of the LHT on a wide array of lepton flavour violating (LFV)...Go to contribution page
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Philipp Haegler04/12/2007, 15:10The spin structure of hadrons in terms of quarks and gluons is an important domain of modern particle physics. Of particular interest is the origin of the total spin of the proton, summarized in form of the proton spin sum rule. Other exciting questions concern possible correlations of spin, orbital and coordinate degrees of freedom inside hadrons. Lattice Quantum Chromodynamics...Go to contribution page
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Luigi Guzzo04/12/2007, 16:00I will review the current status of studies of the large- scale structure of the Universe, in the light of the surprising evidence for acceleration of the cosmic expansion rate. Deep redshift surveys with 8-m class telescopes are just starting to be large enough to estimate 'global' quantities that directly probe the parameters of the cosmological model at z~1, in particular in...Go to contribution page
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Ben Metcalf04/12/2007, 16:45The gravitational lensing of pregalactic HI could be a tremendously important tool for doing cosmology in the future. Low-frequency radio observations of neutral hydrogen during and before the epoch of cosmic reionization will provide hundreds of quasi- independent source planes. These planes can be used to reconstruct the projected mass distribution of foreground material,...Go to contribution page
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Moster & Rust (MPP)04/12/2007, 17:05
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Genest et al.04/12/2007, 17:10
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Hollik et al.04/12/2007, 17:15
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Hollik et al.04/12/2007, 17:20
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Buras & Ratz04/12/2007, 17:25
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Paul et al.04/12/2007, 17:30
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Fabbietti et al.04/12/2007, 17:35
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Pradler04/12/2007, 17:40
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Das et al.04/12/2007, 17:45
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Giodini et al.04/12/2007, 17:50
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Lee et al.04/12/2007, 17:55
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Merloni et al.04/12/2007, 18:00
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Dillmann et al.04/12/2007, 18:05
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Marek et al.04/12/2007, 18:10
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Morgan et al.04/12/2007, 18:15
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Burkert & Gritschneder04/12/2007, 18:20
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Frank Simon05/12/2007, 09:00The International Linear Collider ILC is currently planned as a machine to provide precision measurements at the Terascale, following up the discoveries likely to be made at the Large Hadron Collider LHC. To achieve the anticipated precision, the detector systems at such a future facility have to go well beyond the present state of the art. I will highlight the physics potential...Go to contribution page
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Wolfgang Hollik05/12/2007, 09:45Precision measurements at high and low energies and theoretical predictions of supersymmetric models provide an indirect access to SUSY particles. Present data and global analyses are shown and their implications for forthcoming LHC experiments are discussed.Go to contribution page
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Marie-Helene Genest05/12/2007, 10:10Supersymmetry is a well-motivated particle theory beyond the Standard Model which predicts new particles yet to be discovered. The talk will review the possible experimental signatures of supersymmetric particles produced at the Large Hadron Collider (LHC), with a special focus on the first years of data.Go to contribution page
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Frank Steffen05/12/2007, 11:00The identity of dark matter is one of the greatest puzzles of our Universe. Its solution may be associated with supersymmetry which is a fundamental space-time symmetry that has not been verified experimentally so far. In many supersymmetric extensions of the Standard Model of particle physics, the lightest supersymmetric particle cannot decay and is hence a promising dark matter...Go to contribution page
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Nicolas Moeller05/12/2007, 11:25I will explain why supersymmetry is a natural, and perhaps necessary, ingredient of string theory, and what that implies for string phenomenology at the TeV scale . I will then shortly address the question of whether we can do string theory without supersymmetry.Go to contribution page
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Alexey Golovnev05/12/2007, 11:45One of the most interesting and difficult issues of cosmology concerns understanding the very early Universe at the Planck scales. The main obstacle in a way of getting a clear notion of this phase is the necessity to have a fully quantized theory of gravity. And since general relativity, which we believe to describe gravity correctly at the classical level, is a theory with...Go to contribution page
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Piero Madau05/12/2007, 14:00I will review scenarios for the assembly of massive black holes (MBHs) that trace their hierarchical build- up far up in the dark halo merger tree. The first active galactic nuclei may have formed 200 Myr after the big bang in one million solar mass halos. I will discuss the conditions under which MBHs become incorporated through a series of mergers into larger and larger halos,...Go to contribution page
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Murad Alim05/12/2007, 14:45The realization of background independence in Topological String Theory leads to a set of equations which have to be satisfied by the topological string partition function. These so called holomorphic anomaly equations lead to interesting insights into the structure of the partition function and provide an efficient calculation tool. The so computed partition function carries...Go to contribution page
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Stephan Paul06/12/2007, 09:00
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Dieter Lüst06/12/2007, 09:45
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Dorothee Schaile06/12/2007, 11:00
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Andrzej Buras06/12/2007, 11:45
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Siegfried Bethke06/12/2007, 13:30
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Stella Seitz06/12/2007, 14:15
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Andrea Merloni06/12/2007, 15:30
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Reiner Krücken06/12/2007, 16:15
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