Istituto Nazionale di Fisica Nucleare, Sezione di Pavia

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19912026

most citedAdvances in Quantum Metrology

3.9k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 1999Show all

27 papers · 1 filter

hep-ex1999★ 1 cited

The upgraded Outer em calorimeter of FOCUS at Fermilab

S. Bianco, F. L. Fabbri, M. Giardoni +17

Operational performance, algorithms, stability and physics results of the Outer em calorimeter of FOCUS are overviewed.

nucl-th1999★ 17 cited

Coulomb corrections to low energy antiproton annihilation cross sections on protons and nuclei

A. Bianconi, G. Bonomi, E. Lodi Rizzini +2

We calculate, in a systematic way, the enhancement effect on antiproton-proton and antiproton-nucleus annihilation cross sections at low energy due to the initial state electrostat…

cond-mat.str-el1999★ 43 cited

Superconducting fluctuations and anomalous diamagnetism in underdoped YBa2Cu3O6+x from magnetization and 63Cu NMR-NQR relaxation measurements

P. Carretta, A. Lascialfari, A. Rigamonti +2

Magnetization and 63Cu NMR-NQR relaxation measurements are used to study the superconducting fluctuations in YBa2Cu3O6+x (YBCO) oriented powders. In optimally doped YBCO the fluctu…

chao-dyn1999★ 18 cited

Classical statistical mechanics of a few-body interacting spin model

F. Borgonovi, F. M. Izrailev

We study the emergence of Boltzmann's law for the "single particle energy distribution" in a closed system of interacting classical spins. It is shown that for a large number of pa…

nucl-ex1999★ 20 cited

A Compact Solid State Detector for Small Angle Particle Tracking

S. Altieri, O. Barnaba, A. Braghieri +11

MIDAS (MIcrostrip Detector Array System) is a compact silicon tracking telescope for charged particles emitted at small angles in intermediate energy photonuclear reactions. It was…

nucl-th1999★ 27 cited

Antiproton annihilation on light nuclei at very low energies

K. V. Protasov, G. Bonomi, E. Lodi Rizzini +1

The recent experimental data obtained by the OBELIX group on $p ˉ$ D and $p ˉ^{4}$ He total annihilation cross sections are analyzed. The combined analysis of these data with e…

hep-ph1999★ 32 cited

Single top production at the LHC as a probe of R parity violation

P. Chiappetta, A. Deandrea, E. Nagy +3

We investigate the potential of the LHC to probe the R parity violating couplings involving the third generation by considering single top production. This study is based on partic…

quant-ph1999★ 300 cited

Phase covariant quantum cloning

D. Bruss, M. Cinchetti, G. M. D'Ariano +1

We consider an N -> M quantum cloning transformation acting on pure two-level states lying on the equator of the Bloch sphere. An upper bound for its fidelity is presented, by esta…

hep-ph1999★ 3 cited

Power corrections and the interplay between perturbative and non-perturbative phenomena

G. P. Salam, G. Zanderighi

We discuss the issue of interplay between perturbative and non-perturbative phenomena for power corrections to e+e- event shapes.

nucl-ex1999★ 131 cited

Determination of the E2/M1 Ratio in the γN \to Δ(1232) Transition from a Simultaneous Measurement of p(\vecγ,p)π^0 and p(\vecγ,π^+)n

R. Beck

Tagged linearly polarized photons have been used at the Mainz Microtron MAMI for simultaneous measurements of the p(\vecγ,p)π^0 and p(\vecγ,π^+)n reaction channels to study the γN…

hep-ex1999★ 15 cited

Hadroproduction of the Chi1 and Chi2 States of Charmonium in 800 GeV/c Proton-Silicon Interactions

E771 Collaboration

The cross sections for the hadroproduction of the Chi1 and Chi2 states of charmonium in proton-silicon collisions at sqrt{s}=38.8 GeV have been measured in Fermilab fixed target Ex…

hep-ph1999★ 56 cited

Angular dependences in electroweak semi-inclusive leptoproduction

Daniel Boer, R. Jakob, P. J. Mulders

We present the leading order unpolarized and polarized cross sections in electroweak semi-inclusive deep inelastic leptoproduction. The azimuthal dependences in the cross section d…

hep-ph1999★ 45 cited

Two-hadron interference fragmentation functions. Part II: a model calculation

A. Bianconi, S. Boffi, R. Jakob +1

We present a model calculation of leading order interference fragmentation functions arising from the distribution of two hadrons produced in the same jet of a fragmenting quark in…

nucl-th1999★ 20 cited

Overlap functions in correlation methods and quasifree nucleon knockout from $^{16}$ O

M. K. Gaidarov, K. A. Pavlova, A. N. Antonov +3

The cross sections of the ( $e, e^{'} N$ ) and ( $γ, p$ ) reactions on $^{16}$ O are calculated, for the transitions to the $1/ 2^{-}$ ground state and the first $3/ 2^{-}$ excited state of the…

astro-ph1999

Gamma ray emission from a baryonic dark halo

F. De Paolis, G. Ingrosso, Ph. Jetzer +1

A recent re-analysis of EGRET data by Dixon et al. has led to the discovery of a statistically significant diffuse $γ$ -ray emission from the galactic halo. We show that this emissi…

cond-mat.mes-hall1999★ 77 cited

Proton NMR for Measuring Quantum-Level Crossing in the Magnetic Molecular Ring Fe10

M. -H. Julien, Z. H. Jang, A. Lascialfari +4

The proton nuclear spin-lattice relaxation rate 1/T1 has been measured as a function of temperature and magnetic field (up to 15 T) in the molecular magnetic ring Fe10. Striking en…

hep-ph1999★ 17 cited

Top-quark physics in six-quark final states at the Next Linear Collider

F. Gangemi, G. Montagna, M. Moretti +2

The processes of six-quark production with one $b b ˉ$ pair are studied by means of a complete tree-level electroweak calculation. The top-quark signal is examined: the importanc…

hep-ph1999★ 12 cited

Light-Pair Corrections to Small-Angle Bhabha Scattering in a Realistic Set-up at LEP

G. Montagna, M. Moretti, O. Nicrosini +2

Light-pair corrections to small-angle Bhabha scattering have been computed in a realistic set-up for luminosity measurements at LEP. The effect of acollinearity and acoplanarity re…

hep-ph1999★ 2 cited

On Large-Angle Bhabha Scattering at LEP

G. Montagna, O. Nicrosini, F. Piccinini

The theoretical accuracy of the program TOPAZ0 in the large-angle Bhabha channel is estimated. The physical error associated with the full Bhabha cross section and its forward and…

cond-mat.supr-con1999★ 105 cited

Charge Segregation, Cluster Spin-Glass and Superconductivity in La1.94Sr0.06CuO4

M. -H. Julien, F. Borsa, P. Carretta +3

A 63Cu and 139La NMR/NQR study of superconducting (Tc=7 K) La1.94Sr0.06CuO4 single crystal is reported. Coexistence of spin-glass and superconducting phases is found below ~5 K fro…

chao-dyn1999★ 2 cited

Chaotic dynamics of a classical radiant cavity

Giuliano Benenti, Giulio Casati, Italo Guarneri

The statistical properties of a classical electromagnetic field in interaction with matter are numerically investigated on a one-dimensional model of a radiant cavity, conservative…

cond-mat.str-el1999

On the estimate of the spin-gap in quasi-1D Heisenberg antiferromagnets from nuclear spin-lattice relaxation

R. Melzi, P. Carretta

We present a careful analysis of the temperature dependence of the nuclear spin-lattice relaxation rate $1/ T_{1}$ in gapped quasi-1D Heisenberg antiferromagnets. It is found that in…

cond-mat.str-el1999★ 30 cited

Spin dynamics and magnetic correlation length in two-dimensional quantum Heisenberg antiferromagnets

P. Carretta, T. Ciabattoni, A. Cuccoli +4

The correlated spin dynamics and the temperature dependence of the correlation length $ξ (T)$ in two-dimensional quantum ( $S = 1/2$ ) Heisenberg antiferromagnets (2DQHAF) on square lat…

nucl-th1999★ 34 cited

Short-range and tensor correlations in the $^{16}$ O(e,e $^{'}$ pn) reaction

C. Giusti, H. Müther, F. D. Pacati +1

The cross sections for electron induced two-nucleon knockout reactions are evaluated for the example of the $^{16}$ O(e,e $^{'}$ pn) $^{14}$ N reaction leading to discrete states in the re…