Research Interests:
Research Interests:
Research Interests:
After demonstrating their general expressions valid at all x, double differential 1-particle inclusive distributions inside a quark and a gluon jet produced in a hard process, together with the inclusive k-transverse distributions, are... more
After demonstrating their general expressions valid at all x, double differential 1-particle inclusive distributions inside a quark and a gluon jet produced in a hard process, together with the inclusive k-transverse distributions, are calculated at small x in the Modified Leading Logarithmic Approximation (MLLA), as functions of the transverse momentum of the outgoing hadron. Results are compared with the Double Logarithmic Approximation (DLA) and a naive DLA-inspired evaluation.
Research Interests:
Research Interests:
Research Interests:
Research Interests: Humanities and Art
Research Interests:
Research Interests:
We examine the properties of ditauonium, an exotic atom consisting of a pair of opposite-sign $$\tau $$ τ leptons bound together by the quantum electrodynamics (QED) interaction in a hydrogen-like state. The energy levels, decay modes and... more
We examine the properties of ditauonium, an exotic atom consisting of a pair of opposite-sign $$\tau $$ τ leptons bound together by the quantum electrodynamics (QED) interaction in a hydrogen-like state. The energy levels, decay modes and associated partial widths, as well as total widths and lifetimes of the ortho- and para-ditauonium states are calculated. Higher-order QED effects – including Lamb shifts, hyperfine splitting structure, and partial decay widths corrections – are incorporated up to approximately next-to-next-to-leading-order (NNLO) accuracy. Beyond the dominant diphoton and difermion decays, the rates of rare decay channels – including Dalitz, radiative, triple-photon, double-Dalitz, four-fermion, and neutrinos final states – are determined.
Research Interests:
Research Interests:
After giving their general expressions valid at all x, double differential 1-particle inclusive distribution inside a quark and a gluon jet produced in a hard process, together with the inclusive k? distribution, are given at small x in... more
After giving their general expressions valid at all x, double differential 1-particle inclusive distribution inside a quark and a gluon jet produced in a hard process, together with the inclusive k? distribution, are given at small x in the Modified Leading Logarithmic Approximation (MLLA), as func- tions of the transverse momentum k? of the outgoing hadron.
Research Interests:
This work revisits recent results on maximal multiplicity induced-dominancy for spectral values in reduced-order time-delay systems and extends it to the general class of second-order retarded differential equations. A parametric... more
This work revisits recent results on maximal multiplicity induced-dominancy for spectral values in reduced-order time-delay systems and extends it to the general class of second-order retarded differential equations. A parametric multiplicity-induced-dominancy property is characterized, allowing to a delayed stabilizing design with reduced complexity. As a matter of fact, the approach is merely a delayed-output-feedback where the candidates’ delays and gains result from the manifold defining the maximal multiplicity of a real spectral value, then, the dominancy is shown using the argument principle. Sensitivity of the control design with respect to the parameters uncertainties/variation is discussed. Various reduced order examples illustrate the applicative perspectives of the approach.
Research Interests:
Research Interests:
Research Interests:
Research Interests:
In this paper, we report our results on charged hadron multiplicities of heavy quark initiated jets produced in high energy collisions. After implementing the so-called dead cone effect in QCD evolution equations, we find that the average... more
In this paper, we report our results on charged hadron multiplicities of heavy quark initiated jets produced in high energy collisions. After implementing the so-called dead cone effect in QCD evolution equations, we find that the average multiplicity decreases significantly as compared to the massless case. Finally, we discuss the transverse momentum distribution of light quark initiated jets and emphasize the comparison between our predictions and CDF data.
Research Interests:
Research Interests:
Research Interests:
Improvements in noise systematics are described, as also neutron calibrations of SDD modules using highly monochromatic filtered neutron beams. The impact of these on a recent multi-detector measurement with respect to new limits in... more
Improvements in noise systematics are described, as also neutron calibrations of SDD modules using highly monochromatic filtered neutron beams. The impact of these on a recent multi-detector measurement with respect to new limits in spin-dependent WIMP cross sections is described.
Research Interests:
We study the correlation between two soft particles in QCD jets. We extend the Fong--Webber analysis to the region away from the hump in the single inclusive energy spectrum and show that the correlation function should flatten off and... more
We study the correlation between two soft particles in QCD jets. We extend the Fong--Webber analysis to the region away from the hump in the single inclusive energy spectrum and show that the correlation function should flatten off and then decrease for large values of l=ln(1/x).
Research Interests:
Research Interests:
We exactely calculate the inclusive transverse momentum (kt) distributions and the 2-particle momentum correlations in high energy hadronic jets at the Modified Leading Logarithmic Approximation (MLLA) of QCD (Quantum Chromodynamics). We... more
We exactely calculate the inclusive transverse momentum (kt) distributions and the 2-particle momentum correlations in high energy hadronic jets at the Modified Leading Logarithmic Approximation (MLLA) of QCD (Quantum Chromodynamics). We first obtain the exact solution of the evolution equations at "small x", which we calculate at the so called "limiting spectrum". We then go beyond this approximation by performing the steepest descent evaluation, which allows to generalize the preceeding results. Our predictions are in good agreement with the data (LEP, Tevatron) and improve those which have been obtained in the past. The comparison with forthcoming data (Tevatron, LHC) will further test the hypothesis of Local Hadron Parton Duality, and the eventual need to incorporate NMLLA corrections.
Research Interests:
After giving their general expressions valid at all x, double differential 1-particle inclusive distribution inside a quark and a gluon jet produced in a hard process, together with the inclusive kt distribution, are given at small x in... more
After giving their general expressions valid at all x, double differential 1-particle inclusive distribution inside a quark and a gluon jet produced in a hard process, together with the inclusive kt distribution, are given at small x in the Modified Leading Logarithmic Approximation (MLLA), as functions of the transverse momentum kt of the outgoing hadron.
Research Interests:
Research Interests:
... e Inés Rodrıguez-Arguelles, mis dos ami-gas europeas más cercanas, al igual que a mis amigos cubanos y companeros de beca (12 y ... partoniques `a tr`es courtes distances (par rapport `a la taille caractérisque des hadrons ∼... more
... e Inés Rodrıguez-Arguelles, mis dos ami-gas europeas más cercanas, al igual que a mis amigos cubanos y companeros de beca (12 y ... partoniques `a tr`es courtes distances (par rapport `a la taille caractérisque des hadrons ∼ 10−13cm), o`u, grce `a la liberté asympto-tique ...
Research Interests:
Research Interests:
Research Interests: Dark Energy, General, De, CS, Inflation, and 15 moreB Physics, Gaussian, Ft, HW, Gy, Bethe Ansatz, AA, CM, E, D, J, HV, Acceleration of Particles, gap equation, and Discrete time
Skip to main content. ...
Research Interests:
Research Interests:
Research Interests:
The parton-to-hadron fragmentation functions (FFs) obtained from the YaJEM and PYTHIA6 Monte Carlo event generators, are studied for jets produced in a strongly-interacting medium and in the QCD "vacuum" respectively. The medium... more
The parton-to-hadron fragmentation functions (FFs) obtained from the YaJEM and PYTHIA6 Monte Carlo event generators, are studied for jets produced in a strongly-interacting medium and in the QCD "vacuum" respectively. The medium modifications are studied with the YaJEM code in two different scenarios by (i) accounting for the medium induced virtuality DeltaQ^2 transferred to the leading parton from the medium, and (ii) by altering the infrared sector in the Borghini-Wiedemann approach. The results of our simulations are compared to experimental jet data measured by the CMS experiment in PbPb and pp collisions at a center-of-mass energy of 2.76 TeV. Though both scenarios qualitatively describe the shape and main physical features of the FFs, the ratios are in much better agreement with the first scenario. Results are presented for the Monte Carlo FFs obtained for different parton flavours (quark and gluon) and accounting exactly, or not, for the experimental jet reconstruct...