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Featured researches published by D. Panzieri.


Physical Review Letters | 2010

Indication of a deeply bound and compact K- pp state formed in the pp- -> pLambdaK+ reaction at 2.85 GeV.

T. Yamazaki; M. Maggiora; P. Kienle; K. Suzuki; A. Amoroso; M. Alexeev; F. Balestra; Y. Bedfer; R. Bertini; L.C. Bland; A. Brenschede; F. Brochard; M. P. Bussa; Seonho Choi; M. L. Colantoni; Dressler R; M. Dzemidzic; Jc Faivre; L. Ferrero; J. Foryciarz; Fröhlich I; Frolov; R. Garfagnini; A. Grasso; S. Heinz; W. W. Jacobs; W. Kühn; A. Maggiora; D. Panzieri; H.-W. Pfaff

We have analyzed data of the DISTO experiment on the exclusive pp --> pLambdaK+ reaction at 2.85 GeV to search for a strongly bound compact K- pp(approximately = X) state to be formed in the pp --> K+ + X reaction. The observed spectra of the K+ missing mass and the pLambda invariant-mass with high transverse momenta of p and K+ revealed a broad distinct peak of 26-sigma confidence with a mass M(X)=2267+/-3(stat)+/-5(syst) MeV/c2 and a width Gamma(X)=118+/-8(stat)+/-10(syst) MeV. The enormously large cross section indicates formation of a compact K- pp with a large binding energy of B(K)=103 MeV, which can be a possible gateway toward cold and dense kaonic nuclear matter.


Physics Letters B | 1999

p̄p annihilation cross section at very low energy

A. Zenoni; A. Bianconi; G. Bonomi; M. Corradini; A. Donzella; E. Lodi Rizzini; L. Venturelli; A. Bertin; M. Bruschi; M. Capponi; S. De Castro; R. Donà; D. Galli; Benedetto Giacobbe; U. Marconi; I. Massa; M. Piccinini; R. Spighi; V. Vagnoni; S. Vecchi; M. Villa; A. Vitale; A. Zoccoli; M. Poli; C. Cicalò; A. Masoni; S. Mauro; G. Puddu; S. Serci; G. Usai

Abstract The pp total annihilation cross section has been measured, with the Obelix apparatus at LEAR, at ten values of the antiproton incident momentum between 43 and 175 MeV/c. The values of the cross section show that the well known 1 p behaviour of the annihilation cross section is drastically modified at very low momenta, which demonstrates the important role of the Coulomb force in low energy pp interaction. Moreover, they do not present any explicit resonant behaviour. Finally, when compared to potential model calculations, the data suggest that the percentage of P-wave in pp interaction around 50 MeV/c antiproton incident momentum is less than 5%.


Physical Review C | 2000

phi and omega meson production in p p reactions at p(lab) = 3.67-GeV/c

F. Balestra; V. Chalyshev; R. Bertini; A. Manara; M. P. Bussa; V. Frolov; F. Brochard; A. Grasso; L. Ferrero; E. Grosse; M. Debowski; A. Popov; J. Ritman; A. Maggiora; S. E. Vigdor; J.-Cl. Faivre; Seonho Choi; I. V. Falomkin; Y. Bedfer; G. Piragino; M. Maggiora; A. Brenschede; V.V. Ivanov; I. Fröhlich; G. Zosi; S. Heinz; H.-W. Pfaff; J. Foryciarz; P. Salabura; G. B. Pontecorvo

The exclusive production cross sections for


Nuclear Physics | 1986

Low-energy Antiproton Neon Interaction

F. Balestra; S. Bossolasco; M.P. Bussa; L. Busso; L. Ferrero; A. Grasso; D. Panzieri; G. Piragino; T. Tosello; G. Bendiscioli; V. Filippini; G. Fumagalli; C. Marciano; A. Rotondi; A. Zenoni; C. Guaraldo; A. Maggiora; Yu. A. Batusov; I. V. Falomkin; G. B. Pontecorvo; M.G. Sapozhnikov; M. Vascon; G. Zanella; E. Lodi Rizzini

\omega


Physics Letters B | 1985

Inelastic interaction of antiprotons with 4He nuclei between 200 and 600 MeV/c

F. Balestra; S. Bossolasco; M.P. Bussa; L. Bussa; L. Ferrero; D. Panzieri; G. Piragino; F. Tosello; C. Guaraldo; A. Maggiora; Yu. A. Batusov; I. V. Falomkin; G. B. Pontecorvo; M.G. Sapozhnikov; G. Bendiscioli; V. Filippini; G. Fumagalli; C. Marciano; A. Rotondi; A. Zenoni; E. Lodi Rizzini; M. Vascon; G. Zanella

and


Physics Letters B | 1992

Meson spectroscopy with antineutrons

A. Adamo; M. Agnello; F. Balestra; G. Belli; G. Bendiscioli; A. Bertin; P. Boccaccio; G.C. Bonazzola; T. Bressani; M. Bruschi; M.P. Bussa; L. Busso; D. Calvo; M. Capponi; M. Corradini; S. Costa; S. De Castro; F. D'Isep; L. Fava; A. Feliciello; L. Ferrero; V. Filippini; D. Galli; R. Garfagnini; U. Gastaldi; P. Gianotti; A. Grasso; C. Guaraldo; Felice Iazzi; A. Lanaro

\phi


Nuclear Physics | 1987

Determination of the ratio σ(p̄n)/σ(p̄p) from p̄4He reaction data

F. Balestra; M.P. Bussa; L. Busso; L. Fava; L. Ferrero; D. Panzieri; G. Piragino; F. Tosello; G. Bendiscioli; A. Rotondi; P. Salvini; A. Zenoni; C. Guaraldo; A. Maggiora; Yu. A. Batusov; I. V. Falomkin; F. Nichitiu; G. B. Pontecorvo; E. Lodi Rizzini

mesons have been measured in proton-proton reactions at


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1985

Experimental apparatus for studying the interaction of antiprotons with light nuclei

F. Balestra; M.P. Bussa; L. Busso; L. Ferrero; G. Gervino; A. Grasso; D. Panzieri; G. Piragino; F. Tosello; G. Bendiscioli; V. Filippini; G. Fumagalli; E. Lodi Rizzini; C. Marciano; A. Rotondi; A. Venaglioni; A. Zenoni; C. Guaraldo; A. Maggiora; A. Cavestro; M. Vascon; G. Zanella; Yu.K. Akimov; Yu. A. Batusov; I. V. Falomkin; G. B. Pontecorvo

p_{lab}=3.67


Physics Letters B | 1987

Neutral strange-particle production in p̄20Ne reactions at 607 MeV/c

F. Balestra; M.P. Bussa; L. Busso; L. Fava; L. Ferrero; D. Panzieri; G. Piragino; F. Tosello; G. Bendiscioli; A. Rotondi; P. Salvini; A. Zenoni; Yu. A. Batusov; I. V. Falomkin; G. B. Pontecorvo; M.G. Sapozhnikow; V.I. Tretyak; C. Guaraldo; A. Maggiora; E. Lodi Rizzini; A. Haatuft; A. Halsteinslid; K. Myklebost; J.M. Olsen; F.O. Breivik; T. Jacobsen; S.O. Sørensen

GeV/c. The observed


Physics Letters B | 1984

p4He reaction cross section at 610 MeV/c

F. Balestra; Yu. A. Batusov; G. Bendiscioli; M.P. Bussa; L. Busso; I. V. Falomkin; L. Ferrero; V. Filippini; G. Fumagalli; G. Gervino; C. Guaraldo; E. Lodi Rizzini; A. Maggiora; D. Panzieri; G. Piragino; G. B. Pontecorvo; A. Rotondi; M.G. Sapozhnikov; F. Tosello; M. Vascon; A. Venaglioni; G. Zanella; A. Zenoni

\phi/\omega

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A. Bertin

University of Bologna

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A. Maggiora

Istituto Nazionale di Fisica Nucleare

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A. Zenoni

University of Brescia

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