2.8k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of MilanIT3.7k papers
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- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT2.4k papers
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30 papers · 2 filters
Heavy quarkonium decays and transitions in the language of effective field theories
Antonio Vairo
Heavy quarkonium decays and transitions are discussed in the framework of non-relativistic effective field theories. Emphasis is put on the matching procedure in the non-perturbati…
Model-independent Study of Magnetic Dipole Transitions in Quarkonium
Nora Brambilla, Yu Jia, Antonio Vairo
We study magnetic dipole (M1) transitions between two quarkonia in the framework of non-relativistic effective field theories of QCD. Relativistic corrections of relative order v^2…
Perturbatively Stable Resummed Small x Evolution Kernels
Guido Altarelli, Richard D. Ball, Stefano Forte
We present a small x resummation for the GLAP anomalous dimension and its corresponding dual BFKL kernel, which includes all the available perturbative information and nonperturbat…
Double Transverse-Spin Asymmetries in Drell-Yan Processes with Antiprotons
Vincenzo Barone, Alessandro Cafarella, Claudio Coriano' +2
We present next-to-leading order predictions for double transverse-spin asymmetries in Drell--Yan dilepton production initiated by proton--antiproton scattering. The kinematic regi…
Re-evaluation of the Gottfried sum using neural networks
Riccardo Abbate, Stefano Forte
We provide a determination of the Gottfried sum from all available data, based on a neural network parametrization of the nonsinglet structure function F_2. We find S_G=0.244 +- 0.…
On the nonperturbative charm effects in inclusive B -> X_c lνdecays
I. I. Bigi, N. Uraltsev, R. Zwicky
We address the nonperturbative effects associated with soft charm quarks in inclusive B decays. Such corrections are allowed by the OPE, but have largely escaped attention so far.…
Likelihood scan of the Super-Kamiokande I time series data
Gioacchino Ranucci
In this work a detailed spectral analysis of the time series of the 8B solar neutrino flux published by the Super-Kamiokande Collaboration is presented, performed through a likelih…
Fermion masses in E_6 grand unification with family permutation symmetries
Francesco Caravaglios, Stefano Morisi
Neutrino masses have been extensively studied in the context of discrete symmetries. A family permutation symmetry easily explains all neutrino oscillations and their mixing angles…
Neural network approach to parton distributions fitting
Andrea Piccione, Joan Rojo
We will show an application of neural networks to extract information on the structure of hadrons. A Monte Carlo over experimental data is performed to correctly reproduce data err…
A Study of Heavy Flavoured Meson Fragmentation Functions in e+ e- annihilation
Matteo Cacciari, Paolo Nason, Carlo Oleari
We compare QCD theoretical predictions for heavy flavoured mesons fragmentation spectra in e+ e- annihilation with data from CLEO, BELLE and LEP. We include several effects in our…
Progress in Small x Resummation
Stefano Forte
I review recent theoretical progress in the resummation of small x contributions to the evolution of parton distributions, in view of its potential significance for accurate phenom…
Soft gluons at large angles in hadron collisions
Yu. L. Dokshitzer, G. Marchesini
A general discussion is presented of the single logarithmic soft factor that appears in two scale QCD observables in processes involving four partons. We treat it as the ``fifth fo…
Improved Hartree--Fock resummations and spontaneous symmetry breaking
Claudio Destri, Andrea Sartirana
The standard Hartree--Fock approximation of the invariant model suffers from serious renormalization problems. In addition, when the symmetry is spontaneously broken,…
Baryon asymmetry in the Universe resulting from Lorentz violation
E. Di Grezia, S. Esposito, G. Salesi
We analyze the phenomenological consequences of a Lorentz violating energy-momentum dispersion relation in order to give a simple explanation for the baryon asymmetry in the Univer…
Hadron collisions and the fifth form factor
Yu. L. Dokshitzer, G. Marchesini
Logarithmically enhanced effects due to radiation of soft gluons at large angles in QCD scattering processes are treated in terms of the "fifth form factor" that accompani…
Effective Field Theory Lagrangians for Baryons with Two and Three Heavy Quarks
Nora Brambilla, Thomas Roesch, Antonio Vairo
By analogy with pNRQCD, we construct Effective Field Theories suitable to describe the heavy-quark sector of baryons made of two and three heavy quarks. A long-standing discrepancy…
The flavor physics in unified gauge theory from an S_3*P discrete symmetry
Stefano Morisi, Marco Picariello
We investigate the phenomenological implication of the discrete symmetry S_3*P on flavor physics in SO(10) unified theory. We construct a minimal renormalizable model which reprodu…
Hadronic mass and q^2 moments of charmless semileptonic B decay distributions
Paolo Gambino, Giovanni Ossola, Nikolai Uraltsev
We report OPE predictions for hadronic mass and q^2 moments in inclusive semileptonic B decays without charm, taking into account experimental cuts on the charged lepton energy and…
Perturbative corrections to semileptonic b decay distributions
V. Aquila, P. Gambino, G. Ridolfi +1
We compute O(alpha_s) and O(alpha_s^n beta_0^{n-1}) (BLM) corrections to the five structure functions relevant for b->q l nu decays and apply the results to the moments of a few di…
Crossing Heavy-Flavour Thresholds in Fragmentation Functions
Matteo Cacciari, Paolo Nason, Carlo Oleari
In analogy with parton distribution functions, also parton fragmentation functions obey matching conditions when crossing heavy-flavour thresholds. We compute these matching condit…
The renormalized and Renormalization-Group invariant Hartree-Fock approximation
Claudio Destri, Andrea Sartirana
We study the renormalization problem for the Hartree--Fock approximation of the invariant model in the symmetric phase and show how to systematically improve the corre…
Laboratory bounds on Lorentz symmetry violation in low energy neutrino physics
E. Di Grezia, S. Esposito, G. Salesi
Quantitative bounds on Lorentz symmetry violation in the neutrino sector have been obtained by analyzing existing laboratory data on neutron decay and pion leptonic decays. In…
Renormalization group approach to Sudakov resummation in prompt photon production
Paolo Bolzoni, Stefano Forte, Giovanni Ridolfi
We prove the all-order exponentiation of soft logarithmic corrections to prompt photon production in hadronic collisions, by generalizing an approach previously developed in the co…
QCD Predictions for Charm and Bottom Production at RHIC
Matteo Cacciari, Paolo Nason, Ramona Vogt
We make up-to-date QCD predictions for open charm and bottom production at RHIC in nucleon-nucleon collisions at \sqrt{S} = 200 GeV. We also calculate the electron spectrum resulti…