508 research outputs found
Phenomenology of Transverse Momentum Dependent Parton Densities
This talk provides a short overview of the phenomenology of transverse
momentum depedent distribution and fragmention functions, focussing on the most
recent phenomenological developments in the study of their scale evolution and
energy depedence.Comment: 9 pages, 6 figures, talk presented at the International Workshop QCD
Evolution 2013, May 6-10, 2013, Thomas Jefferson National Accelerator
Facility, Newport News, V
The Jigsaw Puzzle of Scalar Mesons
This is a brief overview of light scalar meson spectroscopy, addressing
longstanding problems, recent developments and future perspectives. In
particular, a new comprehensive data analysis is introduced which will help to
unravel the structure of the f_0(980).Comment: 3 pages, 1 postscript figure, to appear in the conference Proceedings
of "Quark Confinement and the Hadron Spectrum IV", Villasimius (Italy), Sept.
21-25, 200
Transverse Momentum Dependent Partonic Distribution and Fragmentation Functions
Our knowledge on the three-dimensional momentum structure of hadrons is
encoded in the Transverse Momentum Dependent partonic distribution and
fragmentation functions (TMDs). A brief and updated review of the TMDs and of
the processes in which they might play a role is presented.Comment: 5 pages, two figures. To appear in the Proceedings of the 19th
Particles & Nuclei International Conference (PANIC 2011), July 24th--29th,
2011, Massachusetts Institute of Technology, Cambridge, MA, US
Phenomenology of Sivers Effect with TMD Evolution
Following the TMD evolution scheme recently proposed for the unpolarized and
the Sivers distribution function, we propose a simple strategy to take into
account this TMD Q^2 dependence in our phenomenological extraction of the
Sivers function from SIDIS data. New results are presented and possible future
applications are discussed.Comment: Contribution to the Proceedings of the XX International Workshop on
Deep-Inelastic Scattering and related subjects (DIS2012), 26-30 March 2012,
Bonn, Germany. One figure correcte
Perspectives in Polarized Leptoproduction
We discuss specific observables that can be measured in deep inelastic
leptoproduction in the case of 1-particle inclusive measurements, namely
azimuthal asymmetries and power-suppressed (higher twist) corrections. These
quantities contain information on the intrinsic transverse momentum of partons,
with close connection to the gluon dynamics in hadrons.Comment: 10 pages with figures, LaTex, uses espcrc1.sty and epsfig.sty.
Invited talk at the workshop on The Structure of the Nucleon (NUCLEON99),
Frascati, June 7-9, 199
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