P̄p annihilation into four charged pions at rest and in flight: The obelix collaboration

P. Salvini; V. I. Tretyak; V. Filippini; A. Fontana; P. Montagna; A. Panzarasa; A. Rotondi; M. Bargiotti; A. Bertin; M. Bruschi; M. Capponi; A. Carbone; S. De Castro; L. Fabbri; P. Faccioli; D. Galli; B. Giacobbe; F. Grimaldi; U. Marconi; I. Massa; M. Piccinini; N. Semprini Cesari; R. Spighi; S. Vecchi; M. Villa; A. Vitale; A. Zoccoli; A. Bianconi; M. Corradini; A. Donzella; E. Lodi Rizzini; L. Venturelli; A. Zenoni; C. Cicalò; A. De Falco; A. Masoni; G. Puddu; S. Serci; G. Usai; O. E. Gorchakov; S. N. Prakhov; A. M. Rozhdestvensky; M. G. Sapozhnikov; M. Poli; P. Gianotti; C. Guaraldo; A. Lanaro; V. Lucherini; C. Petrascu; D. Panzieri; F. Balestra; M. P. Bussa; L. Busso; P. Cerello; O. Denisov; L. Ferrero; A. Grasso; A. Maggiora; F. Tosello; E. Botta; T. Bressani; D. Calvo; F. De Mori; A. Feliciello; A. Filippi; S. Marcello; M. Agnello; F. Iazzi

doi:10.1140/epjc/s2004-01811-8

P̄p annihilation into four charged pions at rest and in flight: The obelix collaboration

P. Salvini, V. I. Tretyak, V. Filippini, A. Fontana, P. Montagna, A. Panzarasa, A. Rotondi, M. Bargiotti, A. Bertin, M. Bruschi, M. Capponi, A. Carbone, S. De Castro, L. Fabbri, P. Faccioli, D. Galli, B. Giacobbe, F. Grimaldi, U. Marconi, I. MassaM. Piccinini, N. Semprini Cesari, R. Spighi, S. Vecchi, M. Villa, A. Vitale, A. Zoccoli, A. Bianconi, M. Corradini, A. Donzella, E. Lodi Rizzini, L. Venturelli, A. Zenoni, C. Cicalò, A. De Falco, A. Masoni, G. Puddu, S. Serci, G. Usai, O. E. Gorchakov, S. N. Prakhov, A. M. Rozhdestvensky, M. G. Sapozhnikov, M. Poli, P. Gianotti, C. Guaraldo, A. Lanaro, V. Lucherini, C. Petrascu, D. Panzieri, F. Balestra, M. P. Bussa, L. Busso, P. Cerello, O. Denisov, L. Ferrero, A. Grasso, A. Maggiora, F. Tosello, E. Botta, T. Bressani, D. Calvo, F. De Mori, A. Feliciello, A. Filippi, S. Marcello, M. Agnello, F. Iazzi

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

Abstract

The spin-parity analysis of the data on the p̄p → 2π⁺ 2π^- annihilation reaction at rest in liquid and in gaseous hydrogen at 3 bar pressure and in flight at p̄ momentum of ≃ 50 MeV/c, collected by the Obelix spectrometer at the LEAR complex of CERN, is presented. The relative branching ratios (a₁(1260) → σπ)/(a₁(1260) → ρπ) = 0.06 ± 0.05 and (π(1300) → σπ)/(π(1300 → ρπT) = 2.2 ± 0.4 are obtained. It is also shown that the inclusion of the exotic meson π₁(1400), J^PC = 1^-+, mass and width M = 1.384 ± 0.028, Γ = 0.378 ± 0.058 GeV/c², in its decay to ρπm, improves the fit and some implications of these results are briefly discussed. The relative S and P-wave annihilation percentages in four charged pions at two target densities are obtained.

Lingua originale	Inglese
pagine (da-a)	21-33
Numero di pagine	13
Rivista	European Physical Journal C
Volume	35
Numero di pubblicazione	1
DOI	https://doi.org/10.1140/epjc/s2004-01811-8
Stato di pubblicazione	Pubblicato - giu 2004
Pubblicato esternamente	Sì

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10.1140/epjc/s2004-01811-8

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Salvini, P., Tretyak, V. I., Filippini, V., Fontana, A., Montagna, P., Panzarasa, A., Rotondi, A., Bargiotti, M., Bertin, A., Bruschi, M., Capponi, M., Carbone, A., De Castro, S., Fabbri, L., Faccioli, P., Galli, D., Giacobbe, B., Grimaldi, F., Marconi, U., ... Iazzi, F. (2004). P̄p annihilation into four charged pions at rest and in flight: The obelix collaboration. European Physical Journal C, 35(1), 21-33. https://doi.org/10.1140/epjc/s2004-01811-8

@article{c50c4f85bba941099640f08eba44e7ee,

title = "{\=P}p annihilation into four charged pions at rest and in flight: The obelix collaboration",

abstract = "The spin-parity analysis of the data on the {\=p}p → 2π+ 2π- annihilation reaction at rest in liquid and in gaseous hydrogen at 3 bar pressure and in flight at {\=p} momentum of ≃ 50 MeV/c, collected by the Obelix spectrometer at the LEAR complex of CERN, is presented. The relative branching ratios (a1(1260) → σπ)/(a1(1260) → ρπ) = 0.06 ± 0.05 and (π(1300) → σπ)/(π(1300 → ρπT) = 2.2 ± 0.4 are obtained. It is also shown that the inclusion of the exotic meson π1(1400), JPC = 1-+, mass and width M = 1.384 ± 0.028, Γ = 0.378 ± 0.058 GeV/c2, in its decay to ρπm, improves the fit and some implications of these results are briefly discussed. The relative S and P-wave annihilation percentages in four charged pions at two target densities are obtained.",

author = "P. Salvini and Tretyak, {V. I.} and V. Filippini and A. Fontana and P. Montagna and A. Panzarasa and A. Rotondi and M. Bargiotti and A. Bertin and M. Bruschi and M. Capponi and A. Carbone and {De Castro}, S. and L. Fabbri and P. Faccioli and D. Galli and B. Giacobbe and F. Grimaldi and U. Marconi and I. Massa and M. Piccinini and Cesari, {N. Semprini} and R. Spighi and S. Vecchi and M. Villa and A. Vitale and A. Zoccoli and A. Bianconi and M. Corradini and A. Donzella and Rizzini, {E. Lodi} and L. Venturelli and A. Zenoni and C. Cical{\`o} and {De Falco}, A. and A. Masoni and G. Puddu and S. Serci and G. Usai and Gorchakov, {O. E.} and Prakhov, {S. N.} and Rozhdestvensky, {A. M.} and Sapozhnikov, {M. G.} and M. Poli and P. Gianotti and C. Guaraldo and A. Lanaro and V. Lucherini and C. Petrascu and D. Panzieri and F. Balestra and Bussa, {M. P.} and L. Busso and P. Cerello and O. Denisov and L. Ferrero and A. Grasso and A. Maggiora and F. Tosello and E. Botta and T. Bressani and D. Calvo and {De Mori}, F. and A. Feliciello and A. Filippi and S. Marcello and M. Agnello and F. Iazzi",

year = "2004",

month = jun,

doi = "10.1140/epjc/s2004-01811-8",

language = "English",

volume = "35",

pages = "21--33",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer New York",

number = "1",

}

Salvini, P, Tretyak, VI, Filippini, V, Fontana, A, Montagna, P, Panzarasa, A, Rotondi, A, Bargiotti, M, Bertin, A, Bruschi, M, Capponi, M, Carbone, A, De Castro, S, Fabbri, L, Faccioli, P, Galli, D, Giacobbe, B, Grimaldi, F, Marconi, U, Massa, I, Piccinini, M, Cesari, NS, Spighi, R, Vecchi, S, Villa, M, Vitale, A, Zoccoli, A, Bianconi, A, Corradini, M, Donzella, A, Rizzini, EL, Venturelli, L, Zenoni, A, Cicalò, C, De Falco, A, Masoni, A, Puddu, G, Serci, S, Usai, G, Gorchakov, OE, Prakhov, SN, Rozhdestvensky, AM, Sapozhnikov, MG, Poli, M, Gianotti, P, Guaraldo, C, Lanaro, A, Lucherini, V, Petrascu, C, Panzieri, D, Balestra, F, Bussa, MP, Busso, L, Cerello, P, Denisov, O, Ferrero, L, Grasso, A, Maggiora, A, Tosello, F, Botta, E, Bressani, T, Calvo, D, De Mori, F, Feliciello, A, Filippi, A, Marcello, S, Agnello, M & Iazzi, F 2004, 'P̄p annihilation into four charged pions at rest and in flight: The obelix collaboration', European Physical Journal C, vol. 35, n. 1, pagg. 21-33. https://doi.org/10.1140/epjc/s2004-01811-8

TY - JOUR

T1 - P̄p annihilation into four charged pions at rest and in flight

T2 - The obelix collaboration

AU - Salvini, P.

AU - Tretyak, V. I.

AU - Filippini, V.

AU - Fontana, A.

AU - Montagna, P.

AU - Panzarasa, A.

AU - Rotondi, A.

AU - Bargiotti, M.

AU - Bertin, A.

AU - Bruschi, M.

AU - Capponi, M.

AU - Carbone, A.

AU - De Castro, S.

AU - Fabbri, L.

AU - Faccioli, P.

AU - Galli, D.

AU - Giacobbe, B.

AU - Grimaldi, F.

AU - Marconi, U.

AU - Massa, I.

AU - Piccinini, M.

AU - Cesari, N. Semprini

AU - Spighi, R.

AU - Vecchi, S.

AU - Villa, M.

AU - Vitale, A.

AU - Zoccoli, A.

AU - Bianconi, A.

AU - Corradini, M.

AU - Donzella, A.

AU - Rizzini, E. Lodi

AU - Venturelli, L.

AU - Zenoni, A.

AU - Cicalò, C.

AU - De Falco, A.

AU - Masoni, A.

AU - Puddu, G.

AU - Serci, S.

AU - Usai, G.

AU - Gorchakov, O. E.

AU - Prakhov, S. N.

AU - Rozhdestvensky, A. M.

AU - Sapozhnikov, M. G.

AU - Poli, M.

AU - Gianotti, P.

AU - Guaraldo, C.

AU - Lanaro, A.

AU - Lucherini, V.

AU - Petrascu, C.

AU - Panzieri, D.

AU - Balestra, F.

AU - Bussa, M. P.

AU - Busso, L.

AU - Cerello, P.

AU - Denisov, O.

AU - Ferrero, L.

AU - Grasso, A.

AU - Maggiora, A.

AU - Tosello, F.

AU - Botta, E.

AU - Bressani, T.

AU - Calvo, D.

AU - De Mori, F.

AU - Feliciello, A.

AU - Filippi, A.

AU - Marcello, S.

AU - Agnello, M.

AU - Iazzi, F.

PY - 2004/6

Y1 - 2004/6

N2 - The spin-parity analysis of the data on the p̄p → 2π+ 2π- annihilation reaction at rest in liquid and in gaseous hydrogen at 3 bar pressure and in flight at p̄ momentum of ≃ 50 MeV/c, collected by the Obelix spectrometer at the LEAR complex of CERN, is presented. The relative branching ratios (a1(1260) → σπ)/(a1(1260) → ρπ) = 0.06 ± 0.05 and (π(1300) → σπ)/(π(1300 → ρπT) = 2.2 ± 0.4 are obtained. It is also shown that the inclusion of the exotic meson π1(1400), JPC = 1-+, mass and width M = 1.384 ± 0.028, Γ = 0.378 ± 0.058 GeV/c2, in its decay to ρπm, improves the fit and some implications of these results are briefly discussed. The relative S and P-wave annihilation percentages in four charged pions at two target densities are obtained.

AB - The spin-parity analysis of the data on the p̄p → 2π+ 2π- annihilation reaction at rest in liquid and in gaseous hydrogen at 3 bar pressure and in flight at p̄ momentum of ≃ 50 MeV/c, collected by the Obelix spectrometer at the LEAR complex of CERN, is presented. The relative branching ratios (a1(1260) → σπ)/(a1(1260) → ρπ) = 0.06 ± 0.05 and (π(1300) → σπ)/(π(1300 → ρπT) = 2.2 ± 0.4 are obtained. It is also shown that the inclusion of the exotic meson π1(1400), JPC = 1-+, mass and width M = 1.384 ± 0.028, Γ = 0.378 ± 0.058 GeV/c2, in its decay to ρπm, improves the fit and some implications of these results are briefly discussed. The relative S and P-wave annihilation percentages in four charged pions at two target densities are obtained.

UR - http://www.scopus.com/inward/record.url?scp=3042600740&partnerID=8YFLogxK

U2 - 10.1140/epjc/s2004-01811-8

DO - 10.1140/epjc/s2004-01811-8

M3 - Article

SN - 1434-6044

VL - 35

SP - 21

EP - 33

JO - European Physical Journal C

JF - European Physical Journal C

IS - 1

ER -

P̄p annihilation into four charged pions at rest and in flight: The obelix collaboration

Abstract

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