Tag Archives: Evento scientifico

The relativistic mean-field (RMF) models either with higher order couplings or density-dependent couplings can be used to explain neutron stars properties with and without kaon or baryons. The nuclear interactions are described by the exchange of the sigma, omega and rho mesons. RMF parameterizations consistent with the recently studied constraints related to nuclear matter, pure neutron matter and symmetry energy were used to calculate the equations of state of star. The properties of nonrotating and rotating neutron stars are considered for a set of equations of state.

Aim of the workshop: This meeting aims at gathering theorists and experimentalists working in the Rome area in the field of collider physics. In an informal environment, we shall discuss several issues, which are relevant at present (SPS and LHC) and future accelerators. In particular, we shall debate the hunting for new physics with the NA62 detector, the coupling of the Higgs boson to gluons and top quarks, top-Higgs associated production and discuss the physics of future facilities, such as ILC and FCC, in both hadron-hadron and electron-positron modes.

The top quark plays a central role in many LHC analyses that test the Standard Model and that search for new physics. I will review why this is so, and discuss in particular recent advances in how to describe the top quark production and decay processes precisely, including the spin of the top quark, and with possible new physics influences. Recent experimental results and theoretical advances will be reviewed, and an outlook given.

Aim of the workshop: In spite of its consolidated experimental success, the standard model of particle physics falls short of describing all observed phenomena. For instance, the cosmological matter/antimatter asymmetry, dark matter, neutrino masses, all require some extension of the standard model. Well motivated theoretical considerations also support the expectation that physics beyond the standard model should sooner or later show up. Presently, it is far from clear which directions should be taken to extend the theory, and while the high energy frontiers keep being explored at the LHC, it is important to maintain under attentive scrutiny any discrepancy between theory predictions and experimental results. In this 3-day workshop we plan to review the status of a few particle physics puzzles of different typologies: long-standing unresolved issues awaiting for further experimental clarification (muon g-2, neutrino physics anomalies), recent hints of anomalies in specific measurements where signals of new physics might preferentially show up (bottom and top physics), and discrepancies particularly robust, which cannot be ascribed to statistical fluctuations (internal e+e- production in 8Be nuclear transitions, proton charge radius). We plan to have only two or three talks each day, and plenty of time to jointly reanalyse the status of the various issues, confront and discuss strategies and ideas. The general approach and format of the talks (on invitation only) will be pedagogical, and should favor extended interaction among participants. Scientific Program and Speakers:  Javier Virto  (Bern) "Flavor anomalies in B physics" Andrea Giammanco (Louvain, CP3) "Who ordered that? Investigations of the …

A possibility that the spin-statistics theorem is broken in neutrino physics is discussed. The impact of such violation on double beta decay, big bang nucleosynthesis, and the cosmological dark matter problems are considered. A possible transition of the statistics breaking from the neutrino sector to other particles is estimated.

Pauli and Bohr watch a spinning top. Photograph by Erik Gustafson, courtesy of AIP Emilio Segrè Visual Archives, Margrethe Bohr Collection This training school is organized in the framework of the John Templeton Foundation financed project: " Hunt for the “impossible atoms”: the quest for a tiny violation of the Pauli Exclusion Principle. Implications for physics, cosmology and philosophy” and is sponsored by the Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Roma and by INFN. The main aim of the school is to train the young generation in hot issues of modern physics, such as the theoretical, philosophical and experimental aspects of the spin-statistics connection & quantum mechanics tests. Expert scientists and philosophers will give lectures on spin-statistics and spin-statistics violation and on theories beyond the “standard” quantum mechanics, with an overview of hottest topics in these sectors. Experiments testing spin-statistics (as VIP) and quantum mechanics and related philosophical issues will be introduced. Young female students and researchers are strongly encouraged to participate. Assessment of knowledge before and after the event will be realised (questionnaire).   Organizers Angelo Bassi, Univ. and INFN Trieste, Italy Catalina Curceanu, LNF-INFN, Italy Johann Marton, SMI-Vienna, Austria Matteo Morganti, Univ. Roma Tre, Italy  

A major goal of axion searches is to reach inside the parameter space region of realistic axion models. Currently, the boundaries of this region depend on somewhat arbitrary criteria, and it would be desirable to specify them in terms of precise phenomenological requirements. I will start with a brief description of the strong CP problem, of the Peccei-Quinn solution predicting the existence of the axion, and of axions as cold Dark Matter. I will then consider the hadronic axion models which involve new heavy quarks Q. By requiring that i) the Q are sufficiently short lived to avoid issues with long lived strongly interacting relics, ii) no Landau poles are induced below the Planck scale, fifteen cases are selected, which define a phenomenologically preferred axion window.

Website: http://www.lnf.infn.it/conference/2016/3DPDF/