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Roberto Spighi

Ricercatore da altro Ateneo/Ente (legge 240/2010, art.6, comma 11)

Dipartimento di Fisica e Astronomia "Augusto Righi"

Professore a contratto a titolo gratuito

Dipartimento di Fisica e Astronomia "Augusto Righi"

Pubblicazioni

vai alle Pubblicazioni

Pubblicazioni antecedenti il 2004

[1] A. Bertin, M. Bruschi, D. Bulgarelli, V.M. Bystritsky, M. Capponi, I. D'Antone,
S. De Castro, D. Galli, U. Marconi, I. Massa, C. Moroni, M. Piccinini, M. Poli, N.
Semprini-Cesari, R. Spighi, V.A. Stolupin, S. Vecchi, M. Villa, A. Vitale, J. Wozniak,
G. Zavattini and A. Zoccoli.
Neutron Spectrometry by Means of a Two-Stage Neutron-Gamma Pulse- Shape Discriminating Apparatus.
Il Nuovo Cimento,105A, N.5 (1992) 751.

[2] A. Bertin, M. Bruschi, M. Capponi, S. De Castro, D. Galli, U. Marconi, I. Massa, M.
Piccinini, M. Poli, N. Semprini-Cesari, R. Spighi, S. Vecchi, M. Villa, A. Vitale, G.
Zavattini and A. Zoccoli.
Compatibility and Possible Implications of the Experimental Results on Solar Neutrinos.
Phys. Letters,B303 (1993) 81.

[3] S. Affatato, G. Artusi, G. Avoni, O. Baglioni, A. Bertin, M. Bruschi, D. Bulgarelli,
M. Capponi, I. D'Antone, S. De Castro, D. Galli, U. Marconi, I. Massa, M. Morganti,
G. Paolucci, M. Piccinini, M. Poli, N. Semprini-Cesari, R. Spighi, S. Tuffanelli, S.
Vecchi, M. Villa, A. Vitale, S. Zagato, G. Zavattini and A. Zoccoli.
The Electromagnetic Calorimeter for the OBELIX Experiment.
Nucl. Instr. and Meth.,A325 (1993) 417.

[4] OBELIX Collaboration.
A new measurement of the Pontecorvo reaction anti-p + d -> p pion- with the OBELIX Spectrometer
at LEAR.
Nucl. Phys.,A562 (1993) 617.

[5] A. Bertin, M. Bruschi, M. Capponi, B. Cereda, I. D'Antone, S. De Castro, D. Galli, B.
Giacobbe, U. Marconi, I. Massa, M. Piccinini, M. Poli, N. Semprini-Cesari, R. Spighi,
S. Vecchi, A. Vezzani, M. Villa, A. Vitale and A. Zoccoli.
The High-Voltage Monitor-System for the Calorimeter of the OBELIX Experiment.
Nucl. Instr. and Meth.,A334 (1993) 391.

[6] A. Bertin, M. Bruschi, V.M. Bystritsky, M. Capponi, B. Cereda, I. D'Antone, S. De
Castro, D. Galli, B. Giacobbe, U. Marconi, I. Massa, C. Moroni, M. Piccinini, M.
Poli, N. Semprini-Cesari, R. Spighi, V.A. Stolupin, S. Vecchi, A. Vezzani, M. Villa,
A. Vitale, J. Wozniak, G. Zavattini and A. Zoccoli.
Performances of a Coincidence Neutron Spectrometer with Double Pulse- Shape Discrimination.
Nucl. Instr. and Meth.,A337 (1994) 445.

[7] OBELIX Collaboration.
An Experimental Study of Antiproton - 4He annihilation at rest.
Nucl. Phys.,A569 (1994) 761.

[8] OBELIX Collaboration.
Changes in the anihilation's delay time distribution of stopped antiproton in helium gas, due to
contaminants. I.
Il Nuovo Cimento,107A, N.8 (1994) 1325.

[9] OBELIX Collaboration.
Measurement of the K+K-/pion+ pion- Annihilation Frequencies in a 5 mbar Hydrogen Gas Target.
Phys. Letters,B329 (1994) 407.

[10] OBELIX Collaboration.
Measurement of the Frequency of the Annihilation Reaction anti-p p -> pion0 pion0 at Rest in a NTP Hydrogen
Target.
Phys. Letters,B337 (1994) 226.

[11] OBELIX Collaboration.
phi and omega Meson Production in anti-np Annihilation and the OZI Rule.
Phys. Letters,B334 (1994) 237.

[12] OBELIX Collaboration.
Annihilation cross sections of Antineutrons on C, Al, Cu, Sn and Pb, at low momenta [180-280
MeV/c] with the Obelix Spectrometer.
Il Nuovo Cimento,107A, N.6 (1994) 943.

[13] OBELIX Collaboration.
Antiproton Slowing Down in H2 and He and Evidence of Nuclear Stopping Power.
Phys. Rev. Lett.,74 (1995) 371.

[14] OBELIX Collaboration.
A Study of the Pontecorvo Reactions in Antiproton Deuterium Annihilation at Rest.
Il Nuovo Cimento,107A, N.12 (1994) 2837.

[15] OBELIX Collaboration.
Measurements of the anti-pd Annihilation at Rest.
Nucl. Phys.,A585 (1995) 577.

[16] OBELIX Collaboration.
phi-p0 and phi-eta Production in Antiproton Annihilation at Rest in a Hydrogen Gas Target at NTP.
Nucl. Phys.,A594 (1995) 375.

[17] G. Avoni, P. Bacilieri, C. Baldanza, A. Bertin, M. Bruschi, D. Bulgarelli, M. Capponi,
B. Cereda, I. D'Antone, S. De Castro, A. Ferretti, D. Galli, B. Giacobbe, M.
Lolli, U. Marconi, I. Massa, S. Meneghini, M. Piccinini, M. Poli, N. Semprini-Cesari,
G. Sola, R. Spighi, G. Torromeo, S. Vecchi, A. Vezzani, M. Villa, A. Vitale and A.
Zoccoli.
Multiplicity and Energy Trigger for a Sampling Electromagnetic Calorimeter.
Nucl. Instr. and Meth.,A365 (1995) 361.

[18] OBELIX Collaboration.
E/j Decays to K+K- in anti-p p Annihilation at Rest.
Phys. Letters,BB361 (1995) 187.

[19] A. Bertin, M. Bruschi, V.M. Bystritsky, M. Capponi, B. Cereda, S. De Castro, A.
Ferretti, D. Galli, B. Giacobbe, U. Marconi, I, Massa, C. Moroni, M. Piccinini, M.
Poli, N. Semprini-Cesari, R. Spighi, S. Vecchi, A. Vezzani, M. Villa, F. Vigotti, M.
Villa, V. Vitale, J. Wozniak, G. Zavattini and A. Zoccoli.
A Monte Carlo Study of the Neutron Registration Effciency of a Multichannel NE213 Detection
System.
NUKLEONIKA,40 No. 2 (1995) 101.

[20] OBELIX Collaboration.
anti-p p annihilation cross section at very low energy.
Phys. Letters,B369 (1996) 77.

[21] OBELIX Collaboration.
Protonium annihilation into KSKL at three dierent target densities.
Phys. Letters,B386 (1996) 486.

[22] A. Bertin, M. Bruschi, V. M. Bystritsky, V. M. Bystritskii, M. Capponi, S. De Castro,
B. Cereda, V. D. Dugar-Zhabon, A. Ferretti, D. Galli, B. Giacobbe, V.I. Kirpal,
A.I. Knyazev, I.M. Kravchenko, U. Marconi, I. Massa, S.I. Merzlyakov, C. Moroni, M.
Piccinini, M. Poli, L.A. Rivkis, N.V. Samsonenko, N. Semprini-Cesari, V.N. Svetsov,
V.T. Sidorov, V.N. Smirnov, S.I. Sorokin, R. Spighi, E.P. Starshin, V. A. Stolupin,
A.V. Strelkov, S. Vecchi, A. Vezzani, M. Villa, A. Vitale, J. Wozniak, G. Zavattini,
N.I. Zhuravlev and A. Zoccoli.
Negative Result of an Experiment Aimed at Verifying the Hypothesis That Cold and Hot Nuclear
Fusion Occurs in Ti/(D-T) and ZrNbV/(D-T) Systems.
Physics of Atomic Nuclei,59 (1996) 744.

[23] A. Bertin, M. Bruschi, V. M. Bystritsky, V. M. Bystritskii, M. Capponi, S. De Castro,
B. Cereda, V. D. Dugar-Zhabon, A. Ferretti, D. Galli, B. Giacobbe, V.I. Kirpal,
A.I. Knyazev, I.M. Kravchenko, U. Marconi, I. Massa, S.I. Merzlyakov, C. Moroni, M.
Piccinini, M. Poli, L.A. Rivkis, N.V. Samsonenko, N. Semprini-Cesari, V.N. Svetsov,
V.T. Sidorov, V.N. Smirnov, S.I. Sorokin, R. Spighi, E.P. Starshin, V. A. Stolupin,
A.V. Strelkov, S. Vecchi, A. Vezzani, M. Villa, A. Vitale, J. Wozniak, G. Zavattini,
N.I. Zhuravlev and A. Zoccoli.
Negative Result of an Experiment Aimed at Verifying a Report on Cold Nuclear Fusion in Systems
of the NaxWO3/(D;D-T) Type .
Physics of Atomic Nuclei,59 (1996) 752.

[24] A. Bertin, M. Bruschi, V. M. Bystritsky, M. Capponi, S. De Castro, B. Cereda,
A. Ferretti, T. Florkowski, D. Galli, B. Giacobbe, V. V. Gushchin, U. Marconi, I.
Massa, C. Moroni, M. Piccinini, M. Poli, L. A. Rivkis, V. I. Sakharov, N. Semprini-
Cesari, R. Spighi, V. A. Stolupin, V. N. Tebus, S. Vecchi, A. Vezzani, M. Villa, A.
Vitale, J. Wozniak, G. Zavattini and A. Zoccoli.
Absence of Tritium Yield in Metal-Deuterium Systems.
Physics of Atomic Nuclei,59 (1996) 934.

[25] OBELIX Collaboration.
Measurement of the eta(1440) -> K+-K0L pion-+ production rates from pp annihilation at rest at three
different hydrogen target densities.
Phys. Letters,B385 (1996) 493.

[26] OBELIX Collaboration.
New data on OZI rule violation in anti-p p annihilation at rest.
Phys. Letters,B388 (1996) 450.

[27] OBELIX Collaboration.
Exotic trapping of antiprotons in 4He: dependence on pressure.
Il Nuovo Cimento,109A, N.10 (1996) 1505.

[28] OBELIX Collaboration.
Experimental antiproton nuclear stopping power in H2and D2.
Phys. Rev.,A54 (1996) 5441.

[29] OBELIX Collaboration.
A search for axial vectors in anti-p p -> K+-K0miss pion-+ pion+ pion-Annihilations at rest in gaseous hydrogen
at NTP.
Phys. Letters,B400 (1997) 226.

[30] OBELIX Collaboration.
Changes in the annihilation delay time distribution of stopped antiprotons in helium gas, due to
contaminants. II.
Il Nuovo Cimento,110 A, N.4 (1997) 419.

[31] OBELIX Collaboration.
New data on DELTA++ baryon production in anti-p d annihilation at rest.
Phys. Letters,B403 (1997) 177.

[32] OBELIX Collaboration.
Study of anti-n p annihilation in two mesons in the momentum range between 50 and 400 MeV/c with
OBELIX.
Phys. Letters,B410 (1997) 344.

[33] OBELIX Collaboration.
Spin-parity analysis of the nal state pion+ pion- pion0 from anti-p p annihilations at rest in hydrogen targets at
three densities.
Phys. Letters,B408 (1997) 476.

[34] OBELIX Collaboration.
Study of anti-p p -> 2pion- + 2pion+ annihilation from S states.
Phys. Letters,B414 (1997) 220.

[35] V. Alberico, C. Baldanza, A. Bertin, M. Bruschi, M. Capponi, I. D'Antone, S. De
Castro, R. Donà, A. Ferretti, D. Galli, B. Giacobbe, U. Marconi, I. Massa, M. Piccinini,
M. Poli, N. Semprini-Cesari, R. Spighi, V. Vagnoni, S. Vecchi, F. Vigotti, M.
Villa, A. Vitale and A. Zoccoli.
The HERA-B electromagnetic calorimeter pre-trigger system .
Il Nuovo Cimento,110A, N.12 (1997) 1453.

[36] OBELIX Collaboration.
A study of the f0(1500)=f2(1565) production in the exclusive annihilation anti-n p-> pion+ pion- pion+ in
flight..
Phys. Rev.,D 57 (1998) 55.

[37] OBELIX Collaboration.
Measurement of the annihilation frequency for the reaction anti-pp -> phi eta of antiprotons at rest at three
different hydrogen target densities.
Phys. Letters,B432 (1998) 427.

[38] OBELIX Collaboration.
Study of the isovector scalar mesons in the channel anti-pp->  K+- K0S pion -+  at rest with initial angular
momentum state selection.
Phys. Letters,B434 (1998) 180.

[39] OBELIX Collaboration.
Study of the and f02(1525) meson production in pp annihilation at rest.
Phys. Letters,B438 (1998) 430.

[40] OBELIX Collaboration.
Light Baryon Production in Binary anti-p d Annihilation Reaction at Rest.
Phys. Letters,B460 (1999) 248.

[41] OBELIX Collaboration.
Study of anti-np -> phi pion+   and antin-n p -> omega pion+ annihilation reaction in
flight.
Nucl. Phys.,A 655 (1999) 453.

[42] OBELIX Collaboration.
New Measurement of the anti-p p Annihilation Cross Section at Very Low Energy.
Phys. Letters,B461 (1999) 405.

[43] OBELIX Collaboration.
anti-p D and anti-p 4He Annihilation Cross Section at Very Low Energy.
Phys. Letters,B461 (1999) 413.

[44] OBELIX Collaboration.
Evidence for Two Pseudoscalar States in the 1.4 - 1.5 GeV Mass Region.
Phys. Letters,B462 (1999) 453.

[45] OBELIX Collaboration.
Study of eta and etaprime Production in anti-n p Annihilations.
Phys. Letters,B471 (1999) 263.

[46] M. Bargiotti, A. Bertin, M. Bruschi, M. Capponi, S. De Castro, R. Dona, P. Faccioli,
D. Galli, B. Giacobbe, U. Marconi, I. Massa, M. Piccinini, M. Poli, N. Semprini-
Cesari, R. Spighi, V. Vagnoni, S. Vecchi, M. Villa, A. Vitale and A. Zoccoli.
An up-to-date determination of the CKM matrix elements and of the unitarity triangle on the basis
of the available experimental results.
Il Nuovo Cimento,A 112 (1999) 1229.

[47] M. Bargiotti, A. Bertin, M. Bruschi, M. Capponi, S. De Castro, R. Dona, P. Faccioli,
D. Galli, B. Giacobbe, U. Marconi, I. Massa, M. Piccinini, M. Poli, N. Semprini-
Cesari, R. Spighi, V. Vagnoni, S. Vecchi, M. Villa, A. Vitale and A. Zoccoli.
Present knowledge of the Cabibbo-Kobayashi-Maskawa matrix.
La Rivista del Nuovo Cimento, N.3 23 (2000) 1-71
Electronic version: hep-ph/0001293

[48] OBELIX Collaboration.
Antineutron-proton total cross section from 50 to 400 MeV/c.
Phys. Letters,B475 (2000) 378.

[49] OBELIX Collaboration.
Measurement of cascade times of antiprotons in molecular hydrogen and helium.
Phys. Letters,B487 (2000) 224.

[50] OBELIX Collaboration.
An analysis of the contribution of isospin two pion pion  resonant states in the anti-np -> pion+ pion+ pion-annihilation
reaction.
Phys. Letters,B495 (2000) 284.

[51] OBELIX Collaboration.
Contribution from S and P waves in anti-p p annihilation at rest.
Nucl. Phys.,A686 (2001) 317.

[52] OBELIX Collaboration.
Protonium annihilation into pion0 pion0 at rest in a liquid hydrogen target.
Phys. Rev.,D 65 (2002) 012001.

[53] M. Bargiotti, A. Bertin, M. Bruschi, M. Capponi, S. De Castro, L. Fabbri, P. Faccioli,
D. Galli, B. Giacobbe, U. Marconi, I. Massa, M. Piccinini, M.Poli, N. Semprini-Cesari,
R. Spighi, V. Vagnoni, S. Vecchi, M. Villa, A. Vitale and A. Zoccoli.
Bayesian analysis of the constraints on gamma
from B -> Kpion rates and CP asymmetries in the
flavour-SU(3) approach.
EPJ C 24 (2002) 361

[54] OBELIX Collaboration.
Measurement of the anti-p d -> phi eta  Pontecorvo reaction for antiproton annihilation at rest.
Phys. Letters,B528 (2002) 34.

[55] OBELIX Collaboration.
Single and multinucleon anti-p He4c annihilation at rest.
Nucl. Phys.,A700 (2002) 159.

[56] M. Bargiotti, A. Bertin, M. Bruschi, M. Capponi, S. De Castro, L. Fabbri, P. Faccioli,
D. Galli, B. Giacobbe, U. Marconi, I. Massa, M. Piccinini, M.Poli, N. Semprini-Cesari,
R. Spighi, V. Vagnoni, S. Vecchi, M. Villa, A. Vitale and A. Zoccoli.
On the K-matrix formalism in partial wave analysis.
EPJ direct,A2 (2002) 1.

[57] OBELIX Collaboration.
Study of the K+K- pion+ pion- pion0 final state in antiproton annihilation at rest in gaseous hydrogen at
NTP with the OBELIX spectrometer.
Phys. Letters,B545 (2002) 261.

[58] E. Lodi Rizzini, A. Bianconi, G. Bonomi, M.P. Bussa, M. Corradini, A. Donzella,
L. Venturelli, M. Bargiotti, A. Bertin, M. Bruschi, M. Capponi, S. De Castro, L.
Fabbri, P. Faccioli, D. Galli, B. Giacobbe, U. Marconi, I. Massa, M. Piccinini, N.
Semprini Cesari, R. Spighi, S. Vecchi, V. Vagnoni, M. Villa, A. Vitale, A. Zoccoli,
O.E. Gorchakov, G.B. pontecorvo, A.M. Rozhdestvensky, V.I. Tretyak, C. Guaraldo,
C. Petrascu, F. Balestra, L. Busso, O.Y. Denisov, L. Ferrero, R. Garfagnini,
A. Grasso, A. Maggiora, G. Piragino, F. Tosello, G. Zosi, G. Margagliotti, L. Santi
and S. Tessaro.
Barkas Eect for Antiproton Stopping in H2.
Phys. Rev. Lett.,89 (2002) 183201.

[59] HERA-B Collaboration.
Measurement of the b anti-b production cross section in 920 GeV Fixed-Target Proton-Nucleus collisions.
Eur. Phys. J. C 26 (2003) 345
(hep-ex/0205106)

[60] OBELIX Collaboration.
Coupled channels analysis of pion+ pion- pion0, K+K- pion0 and K+-K0S pion -+ from anti-p p annihilation at rest in
hydrogen targets at three densities.
Eur. Phys. J. C 26 (2003) 371

[61] M. Bargiotti, A. Bertin, M. Bruschi, M. Capponi, S. De Castro, L. Fabbri, P. Faccioli,
D. Galli, B. Giacobbe, U. Marconi, I. Massa, M. Piccinini, M.Poli, N. Semprini-Cesari,
R. Spighi, V. Vagnoni, S. Vecchi, M. Villa, A. Vitale and A. Zoccoli.
A Beowulf-class Computing Cluster for the Monte Carlo Production of the LHCb Experiment.
Comp. Phys. Comm. , 150/2 (2003) 129

[62] HERA-B Collaboration.
Jpsi Production via Chic Decays in 920 GeV pA Interactions.
Phys. Letters,B561 (2003) 61.
DESY-02-187, hep-ex/0211033

[63] HERA-B Collaboration.
Inclusive V 0 Production Cross Sections from 920 GeV Fixed Target Proton-Nucleus Collisions.
Eur. Phys. J. C 29 2003 181

[64] OBELIX Collaboration.
Results of the coupled channels analysis of pion+ pion- pion0, K+K- pion0 and K+- K0S pion-+ final states from anti-p p
annihilation at rest in hydrogen targets at three densities.
Phys. Letters,B561 (2003) 233.

[65] OBELIX Collaboration.
anti-p p annihilation into four charged pions at rest and in flight.
Eur. Phys. J. C 35 (2004) 21

[66] E. Lodi Rizzini et al. and ..
Annihilation stopping power in He in the energy range 1-900 keV and the barkas effect.
Phys. Letters,B599 (2004) 190.

[67] OBELIX Collaboration.
Dynamical Selection rules from anti-p p annihilation at rest in three meson nal states.
Eur. Phys. J. C 35 (2004) 177

[68] HERA-B Collaboration.
Search for the flavor-changing neutral current decay D0- > muon+ muon- with the HERA-B detector.
Phys. Letters,B596 (2004) 173.

[69] HERA-B Collaboration.
Limits for the Central Production of THETA+ and EPSILON-- Pentaquarks in 920 GeV pA Collisions.
Phys. Rev. Lett.,93 (2004) 212003-1.

[70] HERA-B Collaboration.
Measurement of the Jpsi production cross section in 920-GeV/c xed-target proton-nucleus interactions.
Phys. Letters,B638 (2006) 407.

[71] HERA-B Collaboration.
Improved measurement of the anti-b b production cross section in 920-GeV xed-target proton-nucleus
collisions..
Phys. Rev.,D 73 (2006) 052005.

[72] F. Maltoni, J. Spengler, M. Bargiotti, A. Bertin, M. Bruschi, S. De Castro, L. Fabbri,
P. Faccioli, B. Giacobbe, F. Grimaldi, I. Massa, M. Piccinini, N. Semprini-Cesari,
R. Spighi, M. Villa, A. Vitale and A. Zoccoli.
Analysis of charmonium production at xed-target experiments in the NRQCD approach..
Phys. Letters,B638 (2006) 202.

[73] HERA-B Collaboration.
Measurement of the GAMMA production cross-section in 920-GeV xed-target proton-nucleus collisions..
Phys. Letters,B638 (2006) 13.

[74] HERA-B Collaboration.
Polarization of LAMBDA and anti-LAMBDAin 920-GeV xed-target proton-nucleus collisions..
Phys. Letters,B638 (2006) 415.

[75] G. Avoni, C. Baldanza, M. Bargiotti, A. Bertin, B. Bobchenko, M. Bruschi, M. Capponi,
I. D'Antone, S. De Castro, L. Fabbri, P. Faccioli, B. Giacobbe, Yu. Gilitsky,
A. Golutvin, O. Gouchtchine, F. Grimaldi, I. Lax, I. Massa, I. Matchikhilian, S.
Meneghini, Yu. Mikhailov, E. Novikov, M. Piccinini, M. Poli, M. Rizzi, V. Rusinov,
N. Semprini-Cesari, S. Shuvalov, A. Soldatov, R. Spighi, E. Tarkovsky, M. Villa, A.
Vitale, A. Zoccoli and M. Zuffa.
A radiation tolerant phototube power supply for the electromagnetic calorimeter of the HERA-B
experiment..
Nucl. Instr. and Meth.,A560 (2006) 539.

[76] HERA-B Collaboration.
K*0 and phi meson production in proton-nucleus interactions at sqrt(s) = 41.6-GeV..
Submitted to Eur.Phys.J.C (hep-ex/0606049)

[77] HERA-B Collaboration.
A Measurement of the 0 to J= production ratio in 920-GeV proton-nucleus interactions..
Eur. Phys. J. C 49 (2007) 545

[78] HERA-B Collaboration.
Bottom production cross-section from double muonic decays of b-hadrons in 920-GeV proton-nucleus
collision..
hep-ex/0606049

[79] G. Avoni et al. and ..
The Electromagnetic Calorimeter of the HERA-B experiment Nucl. Instr. and Meth.,A580 (2007)
1209.

[80] HERA-B Collaboration.
Production of the charmonium states chic1 and chic2 in proton nucleus interactions at sqrt(s) = 41.6 GeV..
Phys. Rev.,D 79 (2009) 012001.