Measurement of the pp→π+π- and pp→K+K- annihilation frequencies in a 5 mb hydrogen gas target

V. G. Ableev; A. Adamo; M. Agnello; A. Andrighetto; 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; P. Cerello; C. Cicalo; M. Corradini; S. Costa; I. D'Antone; S. De Castro; F. D'Isep; A. Donzella; L. Fava; A. Feliciello; L. Ferrero; A. Filippi; V. Filippini; D. Galli; R. Garfagnini; U. Gastaldi; P. Gianotti; A. Grasso; C. Guaraldo; F. Iazzi; A. Lai; A. Lanaro; E. Lodi Rizzini; M. Lombardi; V. Lucherini; A. Maggiora; G. Maneva; S. Marcello; U. Marconi; G. Margagliotti; G. Maron; A. Masoni; I. Massa; B. Minetti; M. Morando; P. Montagna; L. Musa; F. Nichitiu; D. Panzieri; G. Pauli; M. Piccinini; G. Piragino; M. Poli; G. Puddu; R. A. Ricci; E. Rossetto; A. Rotondi; A. M. Rozhdestvensky; P. Salvini; L. Santi; M. G. Sapozhnikov; N. Semprini Cesari; S. Serci; R. Spighi; S. Vecchi; P. Temnikov; S. Tessaro; F. Tosello; V. I. Tretyak; G. Usai; L. Vannucci; G. Vedovato; L. Venturelli; M. Villa; A. Vitale; A. Zenoni; A. Zoccoli; G. Zosi

doi:10.1016/0370-2693(94)90794-3

Measurement of the pp→π⁺π^- and pp→K⁺K^- annihilation frequencies in a 5 mb hydrogen gas target

V. G. Ableev, A. Adamo, M. Agnello, A. Andrighetto, 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, P. Cerello, C. Cicalo, M. Corradini, S. CostaI. D'Antone, S. De Castro, F. D'Isep, A. Donzella, L. Fava, A. Feliciello, L. Ferrero, A. Filippi, V. Filippini, D. Galli, R. Garfagnini, U. Gastaldi, P. Gianotti, A. Grasso, C. Guaraldo, F. Iazzi, A. Lai, A. Lanaro, E. Lodi Rizzini, M. Lombardi, V. Lucherini, A. Maggiora, G. Maneva, S. Marcello, U. Marconi, G. Margagliotti, G. Maron, A. Masoni, I. Massa, B. Minetti, M. Morando, P. Montagna, L. Musa, F. Nichitiu, D. Panzieri, G. Pauli, M. Piccinini, G. Piragino, M. Poli, G. Puddu, R. A. Ricci, E. Rossetto, A. Rotondi, A. M. Rozhdestvensky, P. Salvini, L. Santi, M. G. Sapozhnikov, N. Semprini Cesari, S. Serci, R. Spighi, S. Vecchi, P. Temnikov, S. Tessaro, F. Tosello, V. I. Tretyak, G. Usai, L. Vannucci, G. Vedovato, L. Venturelli, M. Villa, A. Vitale, A. Zenoni, A. Zoccoli, G. Zosi

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

Abstract

We report the first measurement of the K⁺K^-, π⁺π^- frequencies for p annihilations at rest in a gaseous H₂ target at low pressure (5 mbar). We have obtained: f_ππ = (4.26±0.11)×10^-3, f_KK = (0.46±0.03)×10^-3. The ratio R = f_KK/f_ππ has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that f_KK decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence.

Lingua originale	Inglese
pagine (da-a)	407-412
Numero di pagine	6
Rivista	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	329
Numero di pubblicazione	2-3
DOI	https://doi.org/10.1016/0370-2693(94)90794-3
Stato di pubblicazione	Pubblicato - 16 giu 1994
Pubblicato esternamente	Sì

Accesso al documento

10.1016/0370-2693(94)90794-3

Altri file e collegamenti

Link to publication in Scopus

Cita questo

Ableev, V. G., Adamo, A., Agnello, M., Andrighetto, A., Balestra, F., Belli, G., Bendiscioli, G., Bertin, A., Boccaccio, P., Bonazzola, G. C., Bressani, T., Bruschi, M., Bussa, M. P., Busso, L., Calvo, D., Capponi, M., Cerello, P., Cicalo, C., Corradini, M., ... Zosi, G. (1994). Measurement of the pp→π⁺π^- and pp→K⁺K^- annihilation frequencies in a 5 mb hydrogen gas target. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 329(2-3), 407-412. https://doi.org/10.1016/0370-2693(94)90794-3

@article{c47f805de19b40ad96ebda0cb24fc662,

title = "Measurement of the pp→π+π- and pp→K+K- annihilation frequencies in a 5 mb hydrogen gas target",

abstract = "We report the first measurement of the K+K-, π+π- frequencies for p annihilations at rest in a gaseous H2 target at low pressure (5 mbar). We have obtained: fππ = (4.26±0.11)×10-3, fKK = (0.46±0.03)×10-3. The ratio R = fKK/fππ has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that fKK decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence.",

author = "Ableev, {V. G.} and A. Adamo and M. Agnello and A. Andrighetto and F. Balestra and G. Belli and G. Bendiscioli and A. Bertin and P. Boccaccio and Bonazzola, {G. C.} and T. Bressani and M. Bruschi and Bussa, {M. P.} and L. Busso and D. Calvo and M. Capponi and P. Cerello and C. Cicalo and M. Corradini and S. Costa and I. D'Antone and {De Castro}, S. and F. D'Isep and A. Donzella and L. Fava and A. Feliciello and L. Ferrero and A. Filippi and V. Filippini and D. Galli and R. Garfagnini and U. Gastaldi and P. Gianotti and A. Grasso and C. Guaraldo and F. Iazzi and A. Lai and A. Lanaro and {Lodi Rizzini}, E. and M. Lombardi and V. Lucherini and A. Maggiora and G. Maneva and S. Marcello and U. Marconi and G. Margagliotti and G. Maron and A. Masoni and I. Massa and B. Minetti and M. Morando and P. Montagna and L. Musa and F. Nichitiu and D. Panzieri and G. Pauli and M. Piccinini and G. Piragino and M. Poli and G. Puddu and Ricci, {R. A.} and E. Rossetto and A. Rotondi and Rozhdestvensky, {A. M.} and P. Salvini and L. Santi and Sapozhnikov, {M. G.} and {Semprini Cesari}, N. and S. Serci and R. Spighi and S. Vecchi and P. Temnikov and S. Tessaro and F. Tosello and Tretyak, {V. I.} and G. Usai and L. Vannucci and G. Vedovato and L. Venturelli and M. Villa and A. Vitale and A. Zenoni and A. Zoccoli and G. Zosi",

year = "1994",

month = jun,

day = "16",

doi = "10.1016/0370-2693(94)90794-3",

language = "English",

volume = "329",

pages = "407--412",

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

issn = "0370-2693",

publisher = "Elsevier",

number = "2-3",

}

Ableev, VG, Adamo, A, Agnello, M, Andrighetto, A, Balestra, F, Belli, G, Bendiscioli, G, Bertin, A, Boccaccio, P, Bonazzola, GC, Bressani, T, Bruschi, M, Bussa, MP, Busso, L, Calvo, D, Capponi, M, Cerello, P, Cicalo, C, Corradini, M, Costa, S, D'Antone, I, De Castro, S, D'Isep, F, Donzella, A, Fava, L, Feliciello, A, Ferrero, L, Filippi, A, Filippini, V, Galli, D, Garfagnini, R, Gastaldi, U, Gianotti, P, Grasso, A, Guaraldo, C, Iazzi, F, Lai, A, Lanaro, A, Lodi Rizzini, E, Lombardi, M, Lucherini, V, Maggiora, A, Maneva, G, Marcello, S, Marconi, U, Margagliotti, G, Maron, G, Masoni, A, Massa, I, Minetti, B, Morando, M, Montagna, P, Musa, L, Nichitiu, F, Panzieri, D, Pauli, G, Piccinini, M, Piragino, G, Poli, M, Puddu, G, Ricci, RA, Rossetto, E, Rotondi, A, Rozhdestvensky, AM, Salvini, P, Santi, L, Sapozhnikov, MG, Semprini Cesari, N, Serci, S, Spighi, R, Vecchi, S, Temnikov, P, Tessaro, S, Tosello, F, Tretyak, VI, Usai, G, Vannucci, L, Vedovato, G, Venturelli, L, Villa, M, Vitale, A, Zenoni, A, Zoccoli, A & Zosi, G 1994, 'Measurement of the pp→π⁺π^- and pp→K⁺K^- annihilation frequencies in a 5 mb hydrogen gas target', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 329, n. 2-3, pagg. 407-412. https://doi.org/10.1016/0370-2693(94)90794-3

TY - JOUR

T1 - Measurement of the pp→π+π- and pp→K+K- annihilation frequencies in a 5 mb hydrogen gas target

AU - Ableev, V. G.

AU - Adamo, A.

AU - Agnello, M.

AU - Andrighetto, A.

AU - Balestra, F.

AU - Belli, G.

AU - Bendiscioli, G.

AU - Bertin, A.

AU - Boccaccio, P.

AU - Bonazzola, G. C.

AU - Bressani, T.

AU - Bruschi, M.

AU - Bussa, M. P.

AU - Busso, L.

AU - Calvo, D.

AU - Capponi, M.

AU - Cerello, P.

AU - Cicalo, C.

AU - Corradini, M.

AU - Costa, S.

AU - D'Antone, I.

AU - De Castro, S.

AU - D'Isep, F.

AU - Donzella, A.

AU - Fava, L.

AU - Feliciello, A.

AU - Ferrero, L.

AU - Filippi, A.

AU - Filippini, V.

AU - Galli, D.

AU - Garfagnini, R.

AU - Gastaldi, U.

AU - Gianotti, P.

AU - Grasso, A.

AU - Guaraldo, C.

AU - Iazzi, F.

AU - Lai, A.

AU - Lanaro, A.

AU - Lodi Rizzini, E.

AU - Lombardi, M.

AU - Lucherini, V.

AU - Maggiora, A.

AU - Maneva, G.

AU - Marcello, S.

AU - Marconi, U.

AU - Margagliotti, G.

AU - Maron, G.

AU - Masoni, A.

AU - Massa, I.

AU - Minetti, B.

AU - Morando, M.

AU - Montagna, P.

AU - Musa, L.

AU - Nichitiu, F.

AU - Panzieri, D.

AU - Pauli, G.

AU - Piccinini, M.

AU - Piragino, G.

AU - Poli, M.

AU - Puddu, G.

AU - Ricci, R. A.

AU - Rossetto, E.

AU - Rotondi, A.

AU - Rozhdestvensky, A. M.

AU - Salvini, P.

AU - Santi, L.

AU - Sapozhnikov, M. G.

AU - Semprini Cesari, N.

AU - Serci, S.

AU - Spighi, R.

AU - Vecchi, S.

AU - Temnikov, P.

AU - Tessaro, S.

AU - Tosello, F.

AU - Tretyak, V. I.

AU - Usai, G.

AU - Vannucci, L.

AU - Vedovato, G.

AU - Venturelli, L.

AU - Villa, M.

AU - Vitale, A.

AU - Zenoni, A.

AU - Zoccoli, A.

AU - Zosi, G.

PY - 1994/6/16

Y1 - 1994/6/16

N2 - We report the first measurement of the K+K-, π+π- frequencies for p annihilations at rest in a gaseous H2 target at low pressure (5 mbar). We have obtained: fππ = (4.26±0.11)×10-3, fKK = (0.46±0.03)×10-3. The ratio R = fKK/fππ has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that fKK decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence.

AB - We report the first measurement of the K+K-, π+π- frequencies for p annihilations at rest in a gaseous H2 target at low pressure (5 mbar). We have obtained: fππ = (4.26±0.11)×10-3, fKK = (0.46±0.03)×10-3. The ratio R = fKK/fππ has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that fKK decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence.

UR - http://www.scopus.com/inward/record.url?scp=0000403212&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(94)90794-3

DO - 10.1016/0370-2693(94)90794-3

M3 - Article

SN - 0370-2693

VL - 329

SP - 407

EP - 412

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 - 2-3