New data on Δ++-baryon production in p̄d annihilation at rest

A. Bertin; M. Bruschi; M. Capponi; A. Collamati; S. De Castro; R. Donà; A. Ferretti; D. Galli; B. Giacobbe; U. Marconi; M. Piccinini; M. Poli; N. Semprini Cesari; R. Spighi; S. Vecchi; A. Vezzani; F. Vigotti; M. Villa; A. Vitale; A. Zoccoli; M. Corradini; A. Donzella; E. Lodi Rizzini; L. Venturelli; A. Zenoni; C. Cicalò; A. Masoni; G. Puddu; S. Serci; P. Temnikov; G. Usai; O. Gortchakov; S. Prakhov; A. Rozhdestvensky; M. Sapozhnikov; V. Tretyak; P. Gianotti; C. Guaraldo; A. Lanaro; V. Lucherini; F. Nichitiu; C. Petrascu; A. Rosca; V. Ableev; C. Cavion; U. Gastaldi; M. Lombardi; G. Maron; L. Vannucci; G. Vedovato; G. Bendiscioli; V. Filippini; A. Fontana; P. Montagna; A. Rotondi; A. Saino; P. Salvini; C. Scoglio; F. Balestra; E. Botta; T. Bressani; M. P. Bussa; L. Busso; D. Calvo; P. Cerello; S. Costa; O. Denisov; L. Fava; A. Feliciello; L. Ferrero; A. Filippi; R. Garfagnini; A. Grasso; A. Maggiora; S. Marcello; D. Panzieri; D. Parena; E. Rossetto; F. Tosello; L. Valacca; G. Zosi; M. Agnello; F. Iazzi; B. Minetti; G. Pauli; S. Tessaro; L. Santi

doi:10.1016/S0370-2693(97)00490-5

New data on Δ⁺⁺-baryon production in p̄d annihilation at rest

A. Bertin, M. Bruschi, M. Capponi, A. Collamati, S. De Castro, R. Donà, A. Ferretti, D. Galli, B. Giacobbe, U. Marconi, M. Piccinini, M. Poli, N. Semprini Cesari, R. Spighi, S. Vecchi, A. Vezzani, F. Vigotti, M. Villa, A. Vitale, A. ZoccoliM. Corradini, A. Donzella, E. Lodi Rizzini, L. Venturelli, A. Zenoni, C. Cicalò, A. Masoni, G. Puddu, S. Serci, P. Temnikov, G. Usai, O. Gortchakov, S. Prakhov, A. Rozhdestvensky, M. Sapozhnikov, V. Tretyak, P. Gianotti, C. Guaraldo, A. Lanaro, V. Lucherini, F. Nichitiu, C. Petrascu, A. Rosca, V. Ableev, C. Cavion, U. Gastaldi, M. Lombardi, G. Maron, L. Vannucci, G. Vedovato, G. Bendiscioli, V. Filippini, A. Fontana, P. Montagna, A. Rotondi, A. Saino, P. Salvini, C. Scoglio, F. Balestra, E. Botta, T. Bressani, M. P. Bussa, L. Busso, D. Calvo, P. Cerello, S. Costa, O. Denisov, L. Fava, A. Feliciello, L. Ferrero, A. Filippi, R. Garfagnini, A. Grasso, A. Maggiora, S. Marcello, D. Panzieri, D. Parena, E. Rossetto, F. Tosello, L. Valacca, G. Zosi, M. Agnello, F. Iazzi, B. Minetti, G. Pauli, S. Tessaro, L. Santi

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

New experimental results on p̄d annihilation at rest into pions plus a high momentum proton in the final state are discussed. The data sample was collected using the OBELIX spectrometer at the LEAR facility (CERN). The annihilation probabilities, or more precisely the yields (Y) via channels p̄d → 2π^-π⁺π⁰p and p̄d → 2π^-π⁺π⁰p with proton momenta p > 400 MeV/c have been measured for the first time: Y = (93.2 ± 1.6) × 10^-4 and Y = (52.2 ± 1.4) × 10^-4, respectively. The signal in the invariant mass distribution of the pπ⁺ system in the region of the well-known Δ⁺⁺ (1232)-isobaris clearly seen in reactions p̄d → 2π^-π⁺p, p̄d → 2π^-π⁺π⁰p, p̄d → 3π^-2π⁺p and p̄d → 3π^-2π⁺π⁰p. The upper limit on reaction p̄ (Δ^-Δ⁺⁺) → 2π^-π⁺p in the pd̄ annihilation at rest, which could be interpreted as a manifestation of the ΔΔ component of the deuteron, was found to be Y ≤ 6.5 × 10^-5 with a 90% confidence level.

Lingua originale	Inglese
pagine (da-a)	177-184
Numero di pagine	8
Rivista	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	403
Numero di pubblicazione	1-2
DOI	https://doi.org/10.1016/S0370-2693(97)00490-5
Stato di pubblicazione	Pubblicato - 19 giu 1997
Pubblicato esternamente	Sì

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10.1016/S0370-2693(97)00490-5

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Bertin, A., Bruschi, M., Capponi, M., Collamati, A., De Castro, S., Donà, R., Ferretti, A., Galli, D., Giacobbe, B., Marconi, U., Piccinini, M., Poli, M., Semprini Cesari, N., Spighi, R., Vecchi, S., Vezzani, A., Vigotti, F., Villa, M., Vitale, A., ... Santi, L. (1997). New data on Δ⁺⁺-baryon production in p̄d annihilation at rest. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 403(1-2), 177-184. https://doi.org/10.1016/S0370-2693(97)00490-5

@article{4703882e29b241749be9fdd31e87366e,

title = "New data on Δ++-baryon production in {\=p}d annihilation at rest",

abstract = "New experimental results on {\=p}d annihilation at rest into pions plus a high momentum proton in the final state are discussed. The data sample was collected using the OBELIX spectrometer at the LEAR facility (CERN). The annihilation probabilities, or more precisely the yields (Y) via channels {\=p}d → 2π-π+π0p and {\=p}d → 2π-π+π0p with proton momenta p > 400 MeV/c have been measured for the first time: Y = (93.2 ± 1.6) × 10-4 and Y = (52.2 ± 1.4) × 10-4, respectively. The signal in the invariant mass distribution of the pπ+ system in the region of the well-known Δ++ (1232)-isobaris clearly seen in reactions {\=p}d → 2π-π+p, {\=p}d → 2π-π+π0p, {\=p}d → 3π-2π+p and {\=p}d → 3π-2π+π0p. The upper limit on reaction {\=p} (Δ-Δ++) → 2π-π+p in the p{\=d} annihilation at rest, which could be interpreted as a manifestation of the ΔΔ component of the deuteron, was found to be Y ≤ 6.5 × 10-5 with a 90% confidence level.",

author = "A. Bertin and M. Bruschi and M. Capponi and A. Collamati and {De Castro}, S. and R. Don{\`a} and A. Ferretti and D. Galli and B. Giacobbe and U. Marconi and M. Piccinini and M. Poli and {Semprini Cesari}, N. and R. Spighi and S. Vecchi and A. Vezzani and F. Vigotti and M. Villa and A. Vitale and A. Zoccoli and M. Corradini and A. Donzella and {Lodi Rizzini}, E. and L. Venturelli and A. Zenoni and C. Cical{\`o} and A. Masoni and G. Puddu and S. Serci and P. Temnikov and G. Usai and O. Gortchakov and S. Prakhov and A. Rozhdestvensky and M. Sapozhnikov and V. Tretyak and P. Gianotti and C. Guaraldo and A. Lanaro and V. Lucherini and F. Nichitiu and C. Petrascu and A. Rosca and V. Ableev and C. Cavion and U. Gastaldi and M. Lombardi and G. Maron and L. Vannucci and G. Vedovato and G. Bendiscioli and V. Filippini and A. Fontana and P. Montagna and A. Rotondi and A. Saino and P. Salvini and C. Scoglio and F. Balestra and E. Botta and T. Bressani and Bussa, {M. P.} and L. Busso and D. Calvo and P. Cerello and S. Costa and O. Denisov and L. Fava and A. Feliciello and L. Ferrero and A. Filippi and R. Garfagnini and A. Grasso and A. Maggiora and S. Marcello and D. Panzieri and D. Parena and E. Rossetto and F. Tosello and L. Valacca and G. Zosi and M. Agnello and F. Iazzi and B. Minetti and G. Pauli and S. Tessaro and L. Santi",

year = "1997",

month = jun,

day = "19",

doi = "10.1016/S0370-2693(97)00490-5",

language = "English",

volume = "403",

pages = "177--184",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

Bertin, A, Bruschi, M, Capponi, M, Collamati, A, De Castro, S, Donà, R, Ferretti, A, Galli, D, Giacobbe, B, Marconi, U, Piccinini, M, Poli, M, Semprini Cesari, N, Spighi, R, Vecchi, S, Vezzani, A, Vigotti, F, Villa, M, Vitale, A, Zoccoli, A, Corradini, M, Donzella, A, Lodi Rizzini, E, Venturelli, L, Zenoni, A, Cicalò, C, Masoni, A, Puddu, G, Serci, S, Temnikov, P, Usai, G, Gortchakov, O, Prakhov, S, Rozhdestvensky, A, Sapozhnikov, M, Tretyak, V, Gianotti, P, Guaraldo, C, Lanaro, A, Lucherini, V, Nichitiu, F, Petrascu, C, Rosca, A, Ableev, V, Cavion, C, Gastaldi, U, Lombardi, M, Maron, G, Vannucci, L, Vedovato, G, Bendiscioli, G, Filippini, V, Fontana, A, Montagna, P, Rotondi, A, Saino, A, Salvini, P, Scoglio, C, Balestra, F, Botta, E, Bressani, T, Bussa, MP, Busso, L, Calvo, D, Cerello, P, Costa, S, Denisov, O, Fava, L, Feliciello, A, Ferrero, L, Filippi, A, Garfagnini, R, Grasso, A, Maggiora, A, Marcello, S, Panzieri, D, Parena, D, Rossetto, E, Tosello, F, Valacca, L, Zosi, G, Agnello, M, Iazzi, F, Minetti, B, Pauli, G, Tessaro, S & Santi, L 1997, 'New data on Δ⁺⁺-baryon production in p̄d annihilation at rest', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 403, n. 1-2, pagg. 177-184. https://doi.org/10.1016/S0370-2693(97)00490-5

TY - JOUR

T1 - New data on Δ++-baryon production in p̄d annihilation at rest

AU - Bertin, A.

AU - Bruschi, M.

AU - Capponi, M.

AU - Collamati, A.

AU - De Castro, S.

AU - Donà, R.

AU - Ferretti, A.

AU - Galli, D.

AU - Giacobbe, B.

AU - Marconi, U.

AU - Piccinini, M.

AU - Poli, M.

AU - Semprini Cesari, N.

AU - Spighi, R.

AU - Vecchi, S.

AU - Vezzani, A.

AU - Vigotti, F.

AU - Villa, M.

AU - Vitale, A.

AU - Zoccoli, A.

AU - Corradini, M.

AU - Donzella, A.

AU - Lodi Rizzini, E.

AU - Venturelli, L.

AU - Zenoni, A.

AU - Cicalò, C.

AU - Masoni, A.

AU - Puddu, G.

AU - Serci, S.

AU - Temnikov, P.

AU - Usai, G.

AU - Gortchakov, O.

AU - Prakhov, S.

AU - Rozhdestvensky, A.

AU - Sapozhnikov, M.

AU - Tretyak, V.

AU - Gianotti, P.

AU - Guaraldo, C.

AU - Lanaro, A.

AU - Lucherini, V.

AU - Nichitiu, F.

AU - Petrascu, C.

AU - Rosca, A.

AU - Ableev, V.

AU - Cavion, C.

AU - Gastaldi, U.

AU - Lombardi, M.

AU - Maron, G.

AU - Vannucci, L.

AU - Vedovato, G.

AU - Bendiscioli, G.

AU - Filippini, V.

AU - Fontana, A.

AU - Montagna, P.

AU - Rotondi, A.

AU - Saino, A.

AU - Salvini, P.

AU - Scoglio, C.

AU - Balestra, F.

AU - Botta, E.

AU - Bressani, T.

AU - Bussa, M. P.

AU - Busso, L.

AU - Calvo, D.

AU - Cerello, P.

AU - Costa, S.

AU - Denisov, O.

AU - Fava, L.

AU - Feliciello, A.

AU - Ferrero, L.

AU - Filippi, A.

AU - Garfagnini, R.

AU - Grasso, A.

AU - Maggiora, A.

AU - Marcello, S.

AU - Panzieri, D.

AU - Parena, D.

AU - Rossetto, E.

AU - Tosello, F.

AU - Valacca, L.

AU - Zosi, G.

AU - Agnello, M.

AU - Iazzi, F.

AU - Minetti, B.

AU - Pauli, G.

AU - Tessaro, S.

AU - Santi, L.

PY - 1997/6/19

Y1 - 1997/6/19

N2 - New experimental results on p̄d annihilation at rest into pions plus a high momentum proton in the final state are discussed. The data sample was collected using the OBELIX spectrometer at the LEAR facility (CERN). The annihilation probabilities, or more precisely the yields (Y) via channels p̄d → 2π-π+π0p and p̄d → 2π-π+π0p with proton momenta p > 400 MeV/c have been measured for the first time: Y = (93.2 ± 1.6) × 10-4 and Y = (52.2 ± 1.4) × 10-4, respectively. The signal in the invariant mass distribution of the pπ+ system in the region of the well-known Δ++ (1232)-isobaris clearly seen in reactions p̄d → 2π-π+p, p̄d → 2π-π+π0p, p̄d → 3π-2π+p and p̄d → 3π-2π+π0p. The upper limit on reaction p̄ (Δ-Δ++) → 2π-π+p in the pd̄ annihilation at rest, which could be interpreted as a manifestation of the ΔΔ component of the deuteron, was found to be Y ≤ 6.5 × 10-5 with a 90% confidence level.

AB - New experimental results on p̄d annihilation at rest into pions plus a high momentum proton in the final state are discussed. The data sample was collected using the OBELIX spectrometer at the LEAR facility (CERN). The annihilation probabilities, or more precisely the yields (Y) via channels p̄d → 2π-π+π0p and p̄d → 2π-π+π0p with proton momenta p > 400 MeV/c have been measured for the first time: Y = (93.2 ± 1.6) × 10-4 and Y = (52.2 ± 1.4) × 10-4, respectively. The signal in the invariant mass distribution of the pπ+ system in the region of the well-known Δ++ (1232)-isobaris clearly seen in reactions p̄d → 2π-π+p, p̄d → 2π-π+π0p, p̄d → 3π-2π+p and p̄d → 3π-2π+π0p. The upper limit on reaction p̄ (Δ-Δ++) → 2π-π+p in the pd̄ annihilation at rest, which could be interpreted as a manifestation of the ΔΔ component of the deuteron, was found to be Y ≤ 6.5 × 10-5 with a 90% confidence level.

UR - http://www.scopus.com/inward/record.url?scp=0000549945&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(97)00490-5

DO - 10.1016/S0370-2693(97)00490-5

M3 - Article

SN - 0370-2693

VL - 403

SP - 177

EP - 184

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2