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  1. No Access

    Article

    Size distribution and ion composition of aerosol collected at Ny-Ålesund in the spring–summer field campaign 2013

    During the 2013 Arctic campaign, direct measurements and size-segregated samplings of atmospheric aerosol were carried out from March to September at the Gruvebadet observatory in Ny-Ålesund (78°56′N, 11°56′E;...

    F. Giardi, S. Becagli, R. Traversi, D. Frosini, M. Severi, L. Caiazzo… in Rendiconti Lincei (2016)

  2. No Access

    Article

    Spin physics with antiprotons

    New possibilities arising from the availability at GSI of antiproton beams, possibly polarised, are discussed. The investigation of the nucleon structure can be boosted by accessing in Drell-Yan processes expe...

    M. Maggiora, V. Abazov, G. Alexeev, M. Alexeev… in Czechoslovak Journal of Physics (2005)

  3. No Access

    Article

    Changes in the annihilation delay time distribution of stopped antiprotons in helium gas, due to contaminants. — II

    A different type of analysis was performed to study the effect of contaminants on the temporal distribution of delayed annihilations of antiprotons stopped in helium gas, with respect to some first results pub...

    A. Bertin, M. Bruschi, I. D’Antone, S. De Castro… in Il Nuovo Cimento A (1971-1996) (1997)

  4. No Access

    Article

    Exotic trap** of antiprotons in4He: dependence on pressure

    The behaviour of the «delayed» component of the time distribution of the annihilation of \(\bar p\) at rest in4He is...

    A. Bertin, M. Bruschi, M. Capponi, S. De Castro… in Il Nuovo Cimento A (1965-1970) (1996)

  5. No Access

    Article

    On a possible second-level trigger for the experiment DISTO

    A two-level trigger is to be applied for suppression of the background and for effective selection of events involving short-lived Λ-, Σ- and φ-particles in the experiment DISTO. The first-level trigger is int...

    M. P. Bussa, L. Fava, L. Ferrero, A. Grasso, V. V. Ivanov… in Il Nuovo Cimento A (1965-1970) (1996)

  6. No Access

    Article

    A study of pontecorvo reactions in antiproton deuterium annihilations at rest

    The results of the analysis of a new data sample of \(\bar p\) annihilations at rest on deuterium and hydrogen, ta...

    V. G. Ableev, M. Agnello, A. Andrighetto, F. Balestra… in Il Nuovo Cimento A (1965-1970) (1994)

  7. No Access

    Article

    Evidence of a new state at ∼ 1660 MeV/c2 observed in \(\bar np\) annihilationsannihilations

    A study of \(\bar np\) in-flight annihilations is presented. The 4π invariant mass spectrum resulting from the ana...

    V. Ableev, A. Adamo, M. Agnello, F. Balestra, G. Belli… in Il Nuovo Cimento A (1965-1970) (1994)

  8. No Access

    Article

    Meson spectroscopy withS- andP-wave-dominant initial-state selection in \(\bar pp\) annihilationannihilation

    The possibility of selecting the initial angular-momentum state from which antiproton-proton annihilation at rest can occur can be a fundamental tool in meson spectroscopy. With the OBELIX detector different t...

    V. G. Ableev, A. Adamo, M. Agnello, A. Andrighetto… in Il Nuovo Cimento A (1965-1970) (1994)

  9. No Access

    Article

    The φπ+/ωπ+ ratio from \(\bar np\) annihilationsannihilations

    A preliminary study of \(\bar np\) three-prong annihilations into the channels K− K+ π+ and π− π+ π+ π0 is present...

    A. Adamo, M. Agnello, F. Balestra, G. Bendiscioli… in Il Nuovo Cimento A (1965-1970) (1994)

  10. No Access

    Article

    Study of the OZI-rule violation in antiproton annihilation in deuterium at rest

    The branching ratios of Φπ− and ωπ− final states were measured for the antiproton annihilation in gaseous deuterium at rest. A significant violation of the OZI rule was found.

    V. G. Ableev, A. Adamo, M. Agnello, F. Balestra, G. Belli… in Il Nuovo Cimento A (1965-1970) (1994)

  11. No Access

    Article

    First results from OBELIX on reactions with detected neutral poins in the final state

    We describe some results obtained by the OBELIX experiment at LEAR by exploiting the whole spectrometer, including the electromagnetic calorimeter, to study the antiproton-proton annihilation at rest in an NTP...

    V. G. Ableev, A. Adamo, A. Andrighetto, M. Angello… in Il Nuovo Cimento A (1965-1970) (1994)

  12. No Access

    Article

    Changes in the Annihilation’s delay time distribution of stopped antiprotons in helium gas, due to contaminants.—I

    The effect of contaminants (H2, N2, Ne, Ar, Xe) on the time distribution of delayed annihilations (average delay time about 3 μs) of antiprotons stopped in helium gas, at 3 atm and room temperature, has been expe...

    V. G. Ableev, A. Adamo, M. Agnello, F. Balestra, G. Belli… in Il Nuovo Cimento A (1965-1970) (1994)

  13. No Access

    Article

    Annihilation cross-sections of antineutrons on C, Al, Cu, Sn and Pb at low momenta (180–280 MeV/c) with the OBELIX spectrometer

    Annihilation cross-sections σann for antineutrons on some nuclei (C, Al, Cu, Sn and Pb) at three antineutron momenta (180, 240 and 280 MeV/c) were measured at LEAR (CERN) with the OBELIX spectrometer. A behaviour...

    V. G. Ableev, A. Adamo, M. Agnello, F. Balestra, G. Belli… in Il Nuovo Cimento A (1965-1970) (1994)

  14. No Access

    Article

    Light nucleus production in \(\bar p^4 \) He annihilation between 0 and 600 MeV/cHe annihilation between 0 and 600 MeV/c

    The production rate of3H in \(\bar p^4 \) He annhilation between 0 and 600 MeV/c is deduced in an approximate way f...

    F. Balestra, S. Bossolasco, M. P. Bussa, L. Busso… in Il Nuovo Cimento A (1965-1970) (1988)

  15. No Access

    Article

    Low energy antiproton annihilation on nuclei

    Data obtained in the study of the antiproton interaction on4He, Ne and photographic emulsion nuclei are reported. Charged prong multiplicities, branching ratios and reaction cross-section values are given. Some f...

    F. Balestra, Yu. A. Batusov, G. Bendiscioli… in Czechoslovak Journal of Physics B (1986)

  16. No Access

    Article

    Inelastic reactions induced by pions on4He at 68, 120, 135, 156, 174 and 208 MeV

    Total and differential cross sections for the π+ 4He→π+p3H, π+ 4He → π+2p2n and π+ 4He → 3pn reactions have been measured atE π =68, 120, 135 and 156 MeV. Total and differential...

    F. Balestra, S. Bossolasco, M. P. Bussa, L. Busso… in Il Nuovo Cimento A (1965-1970) (1986)

  17. No Access

    Article

    4He(π±, π±p)3H and4He(π±, π±2p2n) reactions induced by pions of 120, 135 and 156 MeV

    We measured4He(π±, π±p)3H and4He(π±π{±}2p2n) reactions at 120, 135 and 156 MeV. We found that the π+π- ratio is less than for free (π+p)/(π-p) elastic scattering.

    F. Balestra, S. Bossolasco, M. P. Bussa, L. Busso… in Lettere al Nuovo Cimento (1971-1985) (1984)

  18. No Access

    Article

    Restriction on amount of antimatter in the early universe from \(\bar p^{ - 4} \) He reaction data-4He reaction data

    A limit on the possible amount of antimatter in the early universe has been deduced from \(\bar p^{ - 4} \) He reac...

    Yu. A. Batusov, I. V. Falomkin, G. B. Pontecorvo… in Lettere al Nuovo Cimento (1971-1985) (1984)

  19. No Access

    Article

    On the \(\left( {\pi ^ + ,\pi ^0 } \right)\) reaction in12Creaction in12C

    G. C. Bonazzola, T. Bressani, E. Chiavassa… in Lettere al Nuovo Cimento (1971-1985) (1974)

  20. No Access

    Article

    High-energy photodisintegration of oxygen

    The cross-section of the16O(γ, p)15N reaction has been measured, by means of a wide-solid-angle scintillation counter telescope, at bremsstrahlung and point energies from 50 to 80 MeV. The experimental results ha...

    E. Mancini, G. Ricco, M. Sanzone, S. Costa, L. Ferrero in Il Nuovo Cimento A (1965-1970) (1973)

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