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TRANSVERSITY 2017

Modern developments in hadron physics emphasize the role of parton intrinsic motion and spin, and their correlations, which are crucial to our full understanding of the nucleon structure in terms of the quark and gluon degrees of freedom in QCD. The main aim of the workshop is to provide an environment in which present theoretical and experimental knowledge in the field of transversity, transverse-momentum dependent distribution and fragmentation functions as well as generalized parton distribution functions will be presented and discussed in depth, together with new theoretical ideas and experimental perspectives. An attendance of about 80 participants is expected. The scientific program will consist of some 50 presentations (by invitation only) in addition to one or two round-table discussions. The Workshop follows the successful editions held in : 2005 on Lake Como (Italy), 2008 Ferrara (Italy), 2011 in Losinj (Croatia), 2014 Cagliari (Italy).

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Flavor physics anomalies

I will discuss the recent B-physics results which indicate intriguing deviations from the Standards Model expectations. I will focus on several New Physics scenarios which are currently being explored. I will then go through several flavor physics observables and argue that they too could provide us with access to New Physics if the hadronic uncertainties are tamed by means of Lattice QCD.

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Heavy flavours and the W-boson mass measurement at the LHC

The inclusive transverse-momentum spectrum of the Z boson is measured with high precision at the LHC and used a standard candle to tune Monte Carlo event generators. In turn, this implies that any change in its theoretical description will affect the Monte Carlo predictions for other Standard Model precision measurements, such as the W mass. One of the uncertainties that currently affects the theoretical prediction of the Z transverse momentum comes from the fact that in the usually used five-flavour scheme (5FS) heavy flavours are treated as massless parton in the initial state. In this work we aim at improving the description of the inclusive Z-boson transverse momentum, by including the effects of the four-flavour scheme (4FS) computation of Z production in association with bottom-quark pairs (where the bottom quarks are massive and there are no bottom PDFs in the proton), on the top of the 5FS description of the neutral-current Drell-Yan process. Finally, we estimate the impact of these effects on the measurement of the W mass.

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The PROTO-SPHERA experiment, an innovative confinement scheme for Fusion

PROTO-SPHERA is an innovative Magnetic Confinement plasma experiment for Controlled Thermonuclear Fusion research, whose aim is to form a Spherical Torus for confining a plasma of thermonuclear interest not around a metal centerpost (as in Tokamaks), but around a Plasma Centerpost. The PROTO-SPHERA experiment is producing plasma since 2 years and has reached in Argon discharges its Phase-1 target current of 8.5 kA in the Plasma Centerpost. In future (at 60 kA plasma current) magnetic plasma instabilities will kink the Plasma Centerpost to a point such as to shed a Spherical Torus around it. The experiment can at the moment produce the Plasma Centerpost only, but it is already exploring the initial phases of the kink instability. This confinement scheme, if successful, will have advantages over Tokamaks: cylindrical and not toroidal geometry of the vacuum vessel (easing access and repairs), undefined sustainment of the toroidal current within the Spherical Torus, by DC voltage applied to the Plasma Centerpost (allowed by mixed magnetic and electrostatic plasma confinement and plasma mass motion), spontaneous re-forming of the Torus in case of ‘plasma disruption’ and finally high plasma beta (unitary ratio between plasma pressure and magnetic confinement pressure, which in conventional Tokamaks is only a few %), that could minimize the size of a future Fusion reactor.

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QCD jets in matter: new techniques and new measurements

Jets, the observable remnants of energetic quarks and gluons, are fundamental objects in QCD. Jets in elementary collisions provide essential, precise tools for the study of the Standard Model and beyond, thanks to decades of development in both theory and experimental methods. In nuclear collisions at collider energies, jets are used to probe hot QCD matter though modification of their production rates and internal structure. However, jet measurements in the complex environment of nuclear collisions require new techniques, to suppress the huge uncorrelated background in such events without imposing bias on the measured distributions. Indeed, one of the most interesting and sensitive jet measurements in heavy-ion collisions is the secondary scattering of low energy jets in the Quark-Gluon Plasma, which is especially challenging due to very small signal/background. I will discuss new approaches to accurate, unbiased jet measurements over the full jet phase space in nuclear collisions, with application to data from the ALICE experiment at the LHC and the STAR experiment at RHIC. I will also discuss the potential application of these techniques to BSM measurements in proton-proton collisions, in the high luminosity era of the LHC.

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Two particle correlations with identified trigger particles in p-Pb collisions at 5.02TeV

We report results of baryon-hadron and meson-hadron correlations at intermediate pT, where an anomalous enhancement in the inclusive baryon-to-meson ratio has been observed in p-Pb collisions at VsNN = 5.02 TeV. The choice of the trigger pT region (2.0 pT 4.0 GeV/c) is of particular interest as it is believed to have contributions from both hard (fragmentation) and soft (hydrodynamics and/or coalescence model of hadronization) processes of particle production. The associated particles are charged hadrons with 1.0 pT 4.0 GeV/c. Using the two particle correlation technique, the multiplicity evolution of the pion- and proton-triggered jet-like yields has been studied to explore the underlying mechanisms of particle production in the intermediate pT (trigger pT) region.

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Bandi ASI/ESA

Descrizione dei Bandi ASI ed ESA di potenziale interesse INFN. Come partecipare ai Bandi ed accedere ai finanziamenti. Domande e discussione finale.

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ACSIN 2016

The 13th Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures ACSIN 2016 (called also ACSIN-2016 ACSIN-13) The year 2016 will mark the 27th anniversary of the ACSIN series and it will happen in Rome at the Bruno Touschek Congress Center of Laboratori Nazionali di Frascati – Istituto Nazionale di Fisica Nucleare. The first International Symposium on Atomically Controlled Surfaces and Interfaces was held in 1991 – Tokyo, supported by the Thin Film and Surface Physics Division in The Japan Society of Applied Physics in commemoration of its 20th anniversary. Bearing in mind the developments in nanoscience and nanotechnology, the word “Nanostructures” has been added to the name of the conference since the fifth International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures (ACSIN-5) was held in Aix-en Provence in 1999. Following the successful series of ACSIN conferences in Tokyo (ACSIN-9, 2007), Granada (ACSIN-10, 2009), Saint Petersburg (ACSIN-11, 2011), and Tsukuba (ACSIN-12, 2013).

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