1,215 research outputs found
Do we understand elastic scattering up to LHC energies?
The measurements of high energy \bar p p and pp elastic at ISR, SPS and
Tevatron colliders have provided usefull informations on the behavior of the
scattering amplitude. A large step in energy domain is accomplished with the
LHC collider presently running, giving a unique opportunity to improve our
knowledge on the asymptotic regime of the elastic scattering amplitude and to
verify the validity of our theoretical approach, to describe the total cross
section \sigma_{tot}(s), the total elastic cross section \sigma_{el}(s), the
ratio of the real to imaginary parts of the forward amplitude \rho(s) and the
differential cross section d\sigma (s,t)/dt.Comment: 6 pages, 2 figures, Invited talk at " DIFFRACTION 2012"', Puerto del
Carmen, Lanzarote Canary Islands (Spain), September 10-15 2012, to appear in
AIP Conference Proceedings (2013
Looking into the Future of Spin and QCD
Several stimulating open questions in high energy spin physics will be
described together with the striking progress recently achieved in this field.
In view of the new experimental facilities and the new tools, soon available, I
will try to anticipate what we will learn next. The prospects for the future
are excellent and clearly, some exciting times are ahead of us.Comment: Closing Lecture at SPIN2002, BNL 8-14/09/02, 10 pages, 3 figure
A new search strategy for the Higgs boson
We propose a novel mechanism for exclusive diffractive Higgs production , in which the Higgs carries a significant fraction of the projectile
proton's momentum. This mechanism will then provide a clear experimental signal
for Higgs production, due to the small background in this kinematic region. The
key assumption underlying our analysis is the presence of intrinsic charm (IC)
and intrinsic bottom (IB) fluctuations in the proton bound state, whose
existence, at high light-cone momentum fraction , has a substantial and
growing experimental and theoretical support.Comment: 4 pages, 1 figure, Talk presented at the International Conference on
QCD and Hadronic Physics, Beijing, June 16-20 (2005
Recent results in the Statistical Approach of Polarized PDF and Extension to Baryon Fragmentation Functions
Parton distributions are constructed in a statistical physical picture of the
nucleon. The chiral properties of QCD lead to strong relations between quarks
and antiquarks distributions and the importance of the Pauli exclusion
principle is also emphasized. A global next-to-leading order QCD analysis of
unpolarized and polarized deep-inelastic scattering data is performed to
determine a small number of free parameters. Some predictions are compared to
recent experimental results. We also present an extension of the statistical
approach to the description of baryon fragmentation functions.Comment: 5 pages, 3 figures, talk presented at DIS2003, XI Int. Workshop on
Deep Inelastic Scattering, St. Petersburg, 23-27 April,200
Recent Progress in the Statistical Approach of Parton Distributions
We recall the physical features of the parton distributions in the quantum
statistical approach of the nucleon. Some predictions from a next-to-leading
order QCD analysis are compared to recent experimental results. We also
consider their extension to include their transverse momentum dependence.Comment: 6 pages, 3 figures, Invited talk at DIFFRACTION 2010, Otranto, Italy,
September 10 - 15, 2010, to appear in the AIP Conference Proceeding
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