Tag Archives: Evento scientifico

The main Features of the phenomenology of WIMP dark matter candidates, as well a broad range of related processes testable at collider, can be described by simple Extension of the Standard Model by a DM candidate and a mediator of its interactions. I will show, mainly focusing on the case of fermionic DM with spin 1 mediator, how combining constraints from different dark matter search strategies can provide hints on the structure of These theories. I will also discuss possible theoretical embeddings of These simplified Setups and how current constraints and future Signals can be used to discriminate different theoretical Frameworks.

Nel seminario verranno discusse le tecniche di programmazione per l’utilizzo della macchina Mitutoyo CMM per l’assemblaggio del nuovo ITS dell’esperimento ALICE.

The discovery of two pentaquarks by LHCb has reinforced the case of “exotic’ hadrons, which have diquarks and antidiquarks as basic units. I review the cases studied until now, the so called XYZ states, the theoretical basis for this concept and the implications for the existence of further states, with baryon number equal two.

This meeting continues the series of workshops on the Cylindrical GEM detectors, held in the Frascati Laboratory of INFN. We are indebted to INFN, IHEP, USTC and MAECI (the Italian Ministry for Foreign Affairs and International Cooperation) for jointly contributing funding to this meeting, in the cadre of the 3-year Program of Great Relevance PGR00136, Italy-China 2013-2015.

Recently astronomical data are accumulated, reporting discoveries of very early formed objects, such as supermassiveblack holes (quasars), gamma bursters, supernovae, and very bright galaxies at high redshifts. Moreover, there is an evidence to existence of starts in our Galaxy which are too old, even older than the universe. All such objects cannot be created in the frameworks of accepted scenarios of their formation. An origin of supermassive black holes observed in the centers of many (maybe all) large and some small galaxies also remains mysterious. After a review of the observations a model is presented that can explain the unusual features of the data. The model is based on a slightly modified scenario of baryogenesis motivated by supersymmetry. As a byproduct the model can predict abundant cosmological antimatter, in particular almost at hand, in the Galaxy. Though the model may be rather speculative, the observed objects present serious challenge to the theory and possibly indicate that “there is something rotten in the state of the universe”

Precision is the new frontier of LHC phenomenology. Accurate theoretical predictions are essential for exploiting the full potential of the machine. I will discuss the role of all-order resummations in providing high-precision predictions for a number of observables at the LHC. I will cover different resummations in QCD, such as soft resummation, collinear resummation and high-energy resummation, and discuss alternative resummation techniques. I will finally present implications of improved theoretical predictions on New Physics searches.

A significant progress has been made in controlling the properties of the radiation emitted by a FEL amplifier. Experiments have demonstrated both the possibility to increase the temporal coherence and to reduce the amplifier length to reach saturation, by seeding it with an external source. The FERMI seeded Free Electron Laser (FEL) is based on two complementary FEL lines, FEL-1 and FEL-2. FEL-1 is a single stage cascaded FEL delivering light in the 65-20nm wavelength range, while FEL-2 is a double stage cascaded FEL where the additional stage extends the frequency up-conversion to the spectral range of 20-4nm. The main aspects and results achieved with these two beam lines will be briefly reviewed, together with the future possibilities opened by the increased control on the FEL process allowed by the interaction with the external seed.

Excellence in Detectors and Instrumentation Technologies www.lnf.infn.it/conference/edit2015