Research Interests

These are the links to the JLab lectures "Transverse thinking: an introduction to TMDs" Lecture 1 - Feb 11, 2009 Lecture 2 - Mar 4, 2009 Lecture 3 - Mar 18, 2009 Lecture 4 - Apr 15, 2009 Lecture 5 - May 14, 2009 Lecture 6 - May 29, 2009

My field of research is Hadronic Physics, i.e., the physics of protons, neutrons, and the like. In particular, the topic of my research work is the spin structure of hadrons.
We know that protons and neutrons are made of quarks and gluons but we are far from understanding their inner structure in a satisfactory way. One of the fundamental problems to be answered is: where does the spin of the hadrons come from? Answering this and similar questions is the ultimate goal of my research field.

1. An overview of Hadronic Physics can be found in this e-print.
2. An overview of Hadronic Spin Physics can be found in this review article.
3. Nice and recent books about my field of research are "Spin in Particle Physics" by E. Leader, and "Transverse Spin Physics" by V. Barone and P. Ratcliffe for the specific case of transversity.
4. A lot of information about spin physics has been gathered by the RIKEN BNL Spin Physics collaboration
5. Experimental collaborations investigating hadronic spin are: HERMES at DESY, PHENIX and STAR at RHIC, COMPASS at CERN, CLAS at JLab.

Get all my publications from SLAC SPIRES.

Here is a copy of my Ph.D. dissertation. If you wish to have a hard copy, contact me.

1. The beautiful site "The Particle Adventure" offers a popular overview of particle physics for the general public.
2. Other interesting sites for laymen can be found at this URL.
3. Watch the movie "The mistery of quarks" (RealMedia, 9.5 Mb) and a movie of a quark smash-up (RealMedia, 111 Kb). These movies are done by Jefferson Lab.

A list of talks I gave at international conferences and workshops

3 Oct 2006	SPIN2006 - Kyoto, JP	Transverse-momentum dependent functions in semi-inclusive DIS
14 Jun 2006	2nd Workshop on the QCD Structure of the Nucleon - Frascati, IT	TMD and Transversity for non-experts
9 Nov 2005	Workshop on spin and parton structure of the nucleon - Tokyo, JP	Overview on quark transversity
7 Sep 2005	Transversity Workshop- Como, IT	Single-spin asymmetries and Qiu-Sterman effect(s)
18 May 2005	Workshop on Semi-Inclusive Reactions (SIR 2005)- Jefferson Lab, USA	Models of Collins and Sivers function
11 May 2005	Workshop on Partonic structure of hadrons- ECT*, Trento, IT	Calculations of T-odd distribution and fragmentation functions
31 Jan 2005	DESY Theory Seminar- DESY, Hamburg, DE	Gauge links and single-spin asymmetries
16 Oct 2004	SPIN2004 - Trieste, IT	Transversity and dihadron fragmentation function.
17 Jun 2004	Workshop on Transversity - Trento, IT	Interference fragmentation functions
16 Apr 2004	DIS2004 - Strbske Pleso, SK	Single-spin asymmetries with two-hadron fragmentation functions
22 May 2003	LNF Spring School 2003 - Frascati, IT	A theorist's contributions to the hunt for transversity
1 May 2002	DIS 2002 - Krakow, PL	Estimate of the Collins fragmentation function in a chiral invariant approach,
29 Nov 2001	HERMES Collaboration meeting - DESY, DE	Fragmentation functions as probes for the transversity distribution,  invited talk
10 Jul 2001	Workshop on Transverse Spin Physics - Zeuthen, DE	Fragmentation into spin-1 hadrons.
28 Apr 2001	DIS 2001 - Bologna, IT	Measuring transversity with T-odd single-particle production
19 Sep 2000	Workshop on Future Transversity Measurements - Brookhaven, US	Measuring transversity with spin-one hadrons.
27 Jul 2000	Workshop - Leiden, NL	Distribution and fragmentation functions in(to) polarized hadrons.
29 Apr 2000	DIS 2000 - Liverpool, UK	Vector meson production in DIS.
27 Apr 2000	DIS 2000 - Liverpool, UK	Bounds on distribution and fragmentation functions.
30 Mar 2000	Workshop HiX2000 - Philadelphia, USA (invited talk by P.J. Mulders)	The full helicity structure of the proton.