Fulvio Piccinini

Matching matrix elements and shower evolution for top-quark production in hadronic collisions

We study the matching of multijet matrix elements and shower evolution in the case of top production in hadronic collisions at the Tevatron and at the LHC. We present the results of the matching algorithm implemented in the ALPGEN Monte Carlo generator, and compare them with results obtained at the parton level, and with the predictions of the MC@NLO approach. We highlight the consistency of the matching algorithm when applied to these final states, and the excellent agreement obtained with MC@NLO for most inclusive quantities. We nevertheless identify also a remarkable difference in the rapidity spectrum of the leading jet accompanying the top quark pair, and comment on the likely origin of this discrepancy.

Diquark-Antidiquarks with Hidden or Open Charm and the Nature of X(3872)

Heavy-light diquarks can be the building blocks of a rich spectrum of states which can accommodate some of the newly observed charmoniumlike resonances not fitting a pure

Strong Double Higgs Production at the LHC

coverline{c}

New Look at Scalar Mesons

assignment. We examine this possibility for hidden and open charm diquark-antidiquark states deducing spectra from constituent quark masses and spin-spin interactions. Taking the

Four-quark hadrons: An updated review

X(3872)

Four quark interpretation of Y ( 4260 )

as input we predict the existence of a

Anomalous Couplings in Double Higgs Production

{2}^{++}

Large-angle Bhabha scattering and luminosity at flavour factories

state that can be associated to the

Higgs Boson production in e+e− → μ+μ−bb

X(3940)

Matching perturbative and parton shower corrections to Bhabha process at flavour factories

observed by Belle and reexamine the state claimed by SELEX,