Study of the K+K-π+π-π0 final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer

F. Nichitiu; C. Guaraldo; A. Lanaro; V. Lucherini; C. Petrascu; A. Rosca; G. Bonomi; M. P. Bussa; A. Donzella; E. Lodi Rizzini; L. Venturelli; A. Zenoni; A. Bertin; M. Bruschi; M. Capponi; S. De Castro; 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; C. Cicalò; A. De Falco; A. Masoni; S. Mauro; G. Puddu; G. Usai; O. E. Gorchakov; S. N. Prakhov; A. M. Rozhdestvensky; V. I. Tretyak; M. Poli; V. Filippini; A. Fontana; P. Montagna; A. Rotondi; P. Salvini; F. Balestra; L. Busso; P. Cerello; O. Denisov; R. Garfagnini; A. Grasso; A. Maggiora; A. Panzarasa; D. Panzieri; F. Tosello; E. Botta; T. Bressani; D. Calvo; S. Costa; D. D'Isep; A. Feliciello; A. Filippi; S. Marcello; M. Agnello; F. Iazzi; B. Minetti; N. Mirfakhrai; S. Tessaro

doi:10.1016/S0370-2693(02)02547-9

Study of the K⁺K^-π⁺π^-π⁰ final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer

F. Nichitiu, C. Guaraldo, A. Lanaro, V. Lucherini, C. Petrascu, A. Rosca, G. Bonomi, M. P. Bussa, A. Donzella, E. Lodi Rizzini, L. Venturelli, A. Zenoni, A. Bertin, M. Bruschi, M. Capponi, S. De Castro, D. Galli, B. Giacobbe, U. Marconi, I. MassaM. Piccinini, N. Semprini-Cesari, R. Spighi, S. Vecchi, V. Vagnoni, M. Villa, A. Vitale, A. Zoccoli, C. Cicalò, A. De Falco, A. Masoni, S. Mauro, G. Puddu, G. Usai, O. E. Gorchakov, S. N. Prakhov, A. M. Rozhdestvensky, V. I. Tretyak, M. Poli, V. Filippini, A. Fontana, P. Montagna, A. Rotondi, P. Salvini, F. Balestra, L. Busso, P. Cerello, O. Denisov, R. Garfagnini, A. Grasso, A. Maggiora, A. Panzarasa, D. Panzieri, F. Tosello, E. Botta, T. Bressani, D. Calvo, S. Costa, D. D'Isep, A. Feliciello, A. Filippi, S. Marcello, M. Agnello, F. Iazzi, B. Minetti, N. Mirfakhrai, S. Tessaro

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

Abstract

A spin-parity analysis of a sample of p̄p → K⁺K^-π⁺π^-π⁰ annihilation events taken at rest in gaseous H₂ at NTP is reported. The invariant mass spectrum of the K⁺K^-π⁰ system shows the presence of the E/t resonance pattern at 1.42 GeV. The analysis of this signal confirms the results obtained by the OBELIX Collaboration in previous works, namely: the existence of two pseudoscalar states at 1.413 ± 0.002 and 1.460 ± 0.012 GeV with widths 0.051 ± 0.004 and 0.120 ± 0.015 GeV, respectively. The p̄p system in the ³P_I wave shows also a signal corresponding to the axial vector f_I (1420) decaying to K* K̄ with mass 1.420 ± 0.003 GeV and width 0.061 ± 0.005 GeV. A study of the incoherent phase space background shows that its origin is mostly due to the reflection of a resonant state in the K⁺ K^-π⁺π^- system. The isobar decomposition of this resonant state is mainly f₀(1370)(ππ)_S, its parameters are: J^PC = 0⁺⁺, m = 1.670 ± 0.02 GeV and width 0.267 ± 0.036 GeV. This signal can be probably identified with another decay mode of the f₀(1710).

Lingua originale	Inglese
pagine (da-a)	261-271
Numero di pagine	11
Rivista	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	545
Numero di pubblicazione	3-4
DOI	https://doi.org/10.1016/S0370-2693(02)02547-9
Stato di pubblicazione	Pubblicato - 10 ott 2002
Pubblicato esternamente	Sì

Accesso al documento

10.1016/S0370-2693(02)02547-9

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Cita questo

Nichitiu, F., Guaraldo, C., Lanaro, A., Lucherini, V., Petrascu, C., Rosca, A., Bonomi, G., Bussa, M. P., Donzella, A., Lodi Rizzini, E., Venturelli, L., Zenoni, A., Bertin, A., Bruschi, M., Capponi, M., De Castro, S., Galli, D., Giacobbe, B., Marconi, U., ... Tessaro, S. (2002). Study of the K⁺K^-π⁺π^-π⁰ final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 545(3-4), 261-271. https://doi.org/10.1016/S0370-2693(02)02547-9

@article{fea0b405b34444eea4ee7c84cb4fa3c3,

title = "Study of the K+K-π+π-π0 final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer",

abstract = "A spin-parity analysis of a sample of {\=p}p → K+K-π+π-π0 annihilation events taken at rest in gaseous H2 at NTP is reported. The invariant mass spectrum of the K+K-π0 system shows the presence of the E/t resonance pattern at 1.42 GeV. The analysis of this signal confirms the results obtained by the OBELIX Collaboration in previous works, namely: the existence of two pseudoscalar states at 1.413 ± 0.002 and 1.460 ± 0.012 GeV with widths 0.051 ± 0.004 and 0.120 ± 0.015 GeV, respectively. The {\=p}p system in the 3PI wave shows also a signal corresponding to the axial vector fI (1420) decaying to K* {\=K} with mass 1.420 ± 0.003 GeV and width 0.061 ± 0.005 GeV. A study of the incoherent phase space background shows that its origin is mostly due to the reflection of a resonant state in the K+ K-π+π- system. The isobar decomposition of this resonant state is mainly f0(1370)(ππ)S, its parameters are: JPC = 0++, m = 1.670 ± 0.02 GeV and width 0.267 ± 0.036 GeV. This signal can be probably identified with another decay mode of the f0(1710).",

author = "F. Nichitiu and C. Guaraldo and A. Lanaro and V. Lucherini and C. Petrascu and A. Rosca and G. Bonomi and Bussa, {M. P.} and A. Donzella and {Lodi Rizzini}, E. and L. Venturelli and A. Zenoni and A. Bertin and M. Bruschi and M. Capponi and {De Castro}, S. and D. Galli and B. Giacobbe and U. Marconi and I. Massa and M. Piccinini and N. Semprini-Cesari and R. Spighi and S. Vecchi and V. Vagnoni and M. Villa and A. Vitale and A. Zoccoli and C. Cical{\`o} and {De Falco}, A. and A. Masoni and S. Mauro and G. Puddu and G. Usai and Gorchakov, {O. E.} and Prakhov, {S. N.} and Rozhdestvensky, {A. M.} and Tretyak, {V. I.} and M. Poli and V. Filippini and A. Fontana and P. Montagna and A. Rotondi and P. Salvini and F. Balestra and L. Busso and P. Cerello and O. Denisov and R. Garfagnini and A. Grasso and A. Maggiora and A. Panzarasa and D. Panzieri and F. Tosello and E. Botta and T. Bressani and D. Calvo and S. Costa and D. D'Isep and A. Feliciello and A. Filippi and S. Marcello and M. Agnello and F. Iazzi and B. Minetti and N. Mirfakhrai and S. Tessaro",

year = "2002",

month = oct,

day = "10",

doi = "10.1016/S0370-2693(02)02547-9",

language = "English",

volume = "545",

pages = "261--271",

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

issn = "0370-2693",

publisher = "Elsevier",

number = "3-4",

}

Nichitiu, F, Guaraldo, C, Lanaro, A, Lucherini, V, Petrascu, C, Rosca, A, Bonomi, G, Bussa, MP, Donzella, A, Lodi Rizzini, E, Venturelli, L, Zenoni, A, Bertin, A, Bruschi, M, Capponi, M, De Castro, S, Galli, D, Giacobbe, B, Marconi, U, Massa, I, Piccinini, M, Semprini-Cesari, N, Spighi, R, Vecchi, S, Vagnoni, V, Villa, M, Vitale, A, Zoccoli, A, Cicalò, C, De Falco, A, Masoni, A, Mauro, S, Puddu, G, Usai, G, Gorchakov, OE, Prakhov, SN, Rozhdestvensky, AM, Tretyak, VI, Poli, M, Filippini, V, Fontana, A, Montagna, P, Rotondi, A, Salvini, P, Balestra, F, Busso, L, Cerello, P, Denisov, O, Garfagnini, R, Grasso, A, Maggiora, A, Panzarasa, A, Panzieri, D, Tosello, F, Botta, E, Bressani, T, Calvo, D, Costa, S, D'Isep, D, Feliciello, A, Filippi, A, Marcello, S, Agnello, M, Iazzi, F, Minetti, B, Mirfakhrai, N & Tessaro, S 2002, 'Study of the K⁺K^-π⁺π^-π⁰ final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 545, n. 3-4, pagg. 261-271. https://doi.org/10.1016/S0370-2693(02)02547-9

Study of the K⁺K^-π⁺π^-π⁰ final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer. / Nichitiu, F.; Guaraldo, C.; Lanaro, A. et al.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 545, N. 3-4, 10.10.2002, pag. 261-271.

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

TY - JOUR

T1 - Study of the K+K-π+π-π0 final state in antiproton annihilation at rest in gaseous hydrogen at NTP with the OBELIX spectrometer

AU - Nichitiu, F.

AU - Guaraldo, C.

AU - Lanaro, A.

AU - Lucherini, V.

AU - Petrascu, C.

AU - Rosca, A.

AU - Bonomi, G.

AU - Bussa, M. P.

AU - Donzella, A.

AU - Lodi Rizzini, E.

AU - Venturelli, L.

AU - Zenoni, A.

AU - Bertin, A.

AU - Bruschi, M.

AU - Capponi, M.

AU - De Castro, S.

AU - Galli, D.

AU - Giacobbe, B.

AU - Marconi, U.

AU - Massa, I.

AU - Piccinini, M.

AU - Semprini-Cesari, N.

AU - Spighi, R.

AU - Vecchi, S.

AU - Vagnoni, V.

AU - Villa, M.

AU - Vitale, A.

AU - Zoccoli, A.

AU - Cicalò, C.

AU - De Falco, A.

AU - Masoni, A.

AU - Mauro, S.

AU - Puddu, G.

AU - Usai, G.

AU - Gorchakov, O. E.

AU - Prakhov, S. N.

AU - Rozhdestvensky, A. M.

AU - Tretyak, V. I.

AU - Poli, M.

AU - Filippini, V.

AU - Fontana, A.

AU - Montagna, P.

AU - Rotondi, A.

AU - Salvini, P.

AU - Balestra, F.

AU - Busso, L.

AU - Cerello, P.

AU - Denisov, O.

AU - Garfagnini, R.

AU - Grasso, A.

AU - Maggiora, A.

AU - Panzarasa, A.

AU - Panzieri, D.

AU - Tosello, F.

AU - Botta, E.

AU - Bressani, T.

AU - Calvo, D.

AU - Costa, S.

AU - D'Isep, D.

AU - Feliciello, A.

AU - Filippi, A.

AU - Marcello, S.

AU - Agnello, M.

AU - Iazzi, F.

AU - Minetti, B.

AU - Mirfakhrai, N.

AU - Tessaro, S.

PY - 2002/10/10

Y1 - 2002/10/10

N2 - A spin-parity analysis of a sample of p̄p → K+K-π+π-π0 annihilation events taken at rest in gaseous H2 at NTP is reported. The invariant mass spectrum of the K+K-π0 system shows the presence of the E/t resonance pattern at 1.42 GeV. The analysis of this signal confirms the results obtained by the OBELIX Collaboration in previous works, namely: the existence of two pseudoscalar states at 1.413 ± 0.002 and 1.460 ± 0.012 GeV with widths 0.051 ± 0.004 and 0.120 ± 0.015 GeV, respectively. The p̄p system in the 3PI wave shows also a signal corresponding to the axial vector fI (1420) decaying to K* K̄ with mass 1.420 ± 0.003 GeV and width 0.061 ± 0.005 GeV. A study of the incoherent phase space background shows that its origin is mostly due to the reflection of a resonant state in the K+ K-π+π- system. The isobar decomposition of this resonant state is mainly f0(1370)(ππ)S, its parameters are: JPC = 0++, m = 1.670 ± 0.02 GeV and width 0.267 ± 0.036 GeV. This signal can be probably identified with another decay mode of the f0(1710).

AB - A spin-parity analysis of a sample of p̄p → K+K-π+π-π0 annihilation events taken at rest in gaseous H2 at NTP is reported. The invariant mass spectrum of the K+K-π0 system shows the presence of the E/t resonance pattern at 1.42 GeV. The analysis of this signal confirms the results obtained by the OBELIX Collaboration in previous works, namely: the existence of two pseudoscalar states at 1.413 ± 0.002 and 1.460 ± 0.012 GeV with widths 0.051 ± 0.004 and 0.120 ± 0.015 GeV, respectively. The p̄p system in the 3PI wave shows also a signal corresponding to the axial vector fI (1420) decaying to K* K̄ with mass 1.420 ± 0.003 GeV and width 0.061 ± 0.005 GeV. A study of the incoherent phase space background shows that its origin is mostly due to the reflection of a resonant state in the K+ K-π+π- system. The isobar decomposition of this resonant state is mainly f0(1370)(ππ)S, its parameters are: JPC = 0++, m = 1.670 ± 0.02 GeV and width 0.267 ± 0.036 GeV. This signal can be probably identified with another decay mode of the f0(1710).

UR - http://www.scopus.com/inward/record.url?scp=0037057601&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(02)02547-9

DO - 10.1016/S0370-2693(02)02547-9

M3 - Article

SN - 0370-2693

VL - 545

SP - 261

EP - 271

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 - 3-4