Multi-nucleon pion absorption in the 4He(π+, ppp)n reaction

P. Weber; J. McAlister; R. Olszewski; A. Feltham; M. Hanna; D. Humphrey; R. R. Johnson; G. J. Lolos; Y. Mardor; S. May-tal; D. Ottewell; Z. Papandreou; M. Pavan; C. Ponting; F. M. Rozon; M. Sevior; G. Sheffer; G. R. Smith; V. Sossi; R. Tacik; D. Vetterli

doi:10.1016/0370-2693(89)91648-1

Multi-nucleon pion absorption in the ⁴He(π⁺, ppp)n reaction

P. Weber^*, J. McAlister, R. Olszewski, A. Feltham, M. Hanna, D. Humphrey, R. R. Johnson, G. J. Lolos, Y. Mardor, S. May-tal, D. Ottewell, Z. Papandreou, M. Pavan, C. Ponting, F. M. Rozon, M. Sevior, G. Sheffer, G. R. Smith, V. Sossi, R. TacikD. Vetterli

^*Corresponding author for this work

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Abstract

Three-proton emission cross sections for the ⁴He(π⁺, ppp)n reaction were measured at T_π⁺=165 MeV over a wide angular range in a kinematically complete experiment. The momentum distribution of the undetected neutron and angular correlations have been compared with three- and four-body phase space Monte Carlo calculations. The results indicate that most of the three-proton coincidences result from three nucleon absorption. The total three-nucleon absorption cross section is estimated to be σ^3N=4.5±1.0 mb from phase-space integration. This cross section does not account for the discrepancy between total absorption cross sections and two-nucleon absorption cross sections.

Original language	English
Pages (from-to)	31-35
Number of pages	5
Journal	Physics Letters B
Volume	230
Issue number	1-2
DOIs	https://doi.org/10.1016/0370-2693(89)91648-1
State	Published - 26 Oct 1989

Funding

Funders	Funder number
National Sciences and Engineering Research Council of Canada
US-Israel Blnational Science Foundation

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Weber, P., McAlister, J., Olszewski, R., Feltham, A., Hanna, M., Humphrey, D., Johnson, R. R., Lolos, G. J., Mardor, Y., May-tal, S., Ottewell, D., Papandreou, Z., Pavan, M., Ponting, C., Rozon, F. M., Sevior, M., Sheffer, G., Smith, G. R., Sossi, V., ... Vetterli, D. (1989). Multi-nucleon pion absorption in the ⁴He(π⁺, ppp)n reaction. Physics Letters B, 230(1-2), 31-35. https://doi.org/10.1016/0370-2693(89)91648-1

@article{ca3b623f57874d919cb7d0208439945d,

title = "Multi-nucleon pion absorption in the 4He(π+, ppp)n reaction",

abstract = "Three-proton emission cross sections for the 4He(π+, ppp)n reaction were measured at Tπ+=165 MeV over a wide angular range in a kinematically complete experiment. The momentum distribution of the undetected neutron and angular correlations have been compared with three- and four-body phase space Monte Carlo calculations. The results indicate that most of the three-proton coincidences result from three nucleon absorption. The total three-nucleon absorption cross section is estimated to be σ3N=4.5±1.0 mb from phase-space integration. This cross section does not account for the discrepancy between total absorption cross sections and two-nucleon absorption cross sections.",

author = "P. Weber and J. McAlister and R. Olszewski and A. Feltham and M. Hanna and D. Humphrey and Johnson, {R. R.} and Lolos, {G. J.} and Y. Mardor and S. May-tal and D. Ottewell and Z. Papandreou and M. Pavan and C. Ponting and Rozon, {F. M.} and M. Sevior and G. Sheffer and Smith, {G. R.} and V. Sossi and R. Tacik and D. Vetterli",

note = "Funding Information: We would like to thank D Ashery for his contribution during the early stage of this experiment This work was supported in part by the National Sciences and Engineering Research Council of Canada and the US-Israel Blnational Science Foundation",

year = "1989",

month = oct,

day = "26",

doi = "10.1016/0370-2693(89)91648-1",

language = "אנגלית",

volume = "230",

pages = "31--35",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-2",

}

Weber, P, McAlister, J, Olszewski, R, Feltham, A, Hanna, M, Humphrey, D, Johnson, RR, Lolos, GJ, Mardor, Y, May-tal, S, Ottewell, D, Papandreou, Z, Pavan, M, Ponting, C, Rozon, FM, Sevior, M, Sheffer, G, Smith, GR, Sossi, V, Tacik, R & Vetterli, D 1989, 'Multi-nucleon pion absorption in the ⁴He(π⁺, ppp)n reaction', Physics Letters B, vol. 230, no. 1-2, pp. 31-35. https://doi.org/10.1016/0370-2693(89)91648-1

TY - JOUR

T1 - Multi-nucleon pion absorption in the 4He(π+, ppp)n reaction

AU - Weber, P.

AU - McAlister, J.

AU - Olszewski, R.

AU - Feltham, A.

AU - Hanna, M.

AU - Humphrey, D.

AU - Johnson, R. R.

AU - Lolos, G. J.

AU - Mardor, Y.

AU - May-tal, S.

AU - Ottewell, D.

AU - Papandreou, Z.

AU - Pavan, M.

AU - Ponting, C.

AU - Rozon, F. M.

AU - Sevior, M.

AU - Sheffer, G.

AU - Smith, G. R.

AU - Sossi, V.

AU - Tacik, R.

AU - Vetterli, D.

N1 - Funding Information: We would like to thank D Ashery for his contribution during the early stage of this experiment This work was supported in part by the National Sciences and Engineering Research Council of Canada and the US-Israel Blnational Science Foundation

PY - 1989/10/26

Y1 - 1989/10/26

N2 - Three-proton emission cross sections for the 4He(π+, ppp)n reaction were measured at Tπ+=165 MeV over a wide angular range in a kinematically complete experiment. The momentum distribution of the undetected neutron and angular correlations have been compared with three- and four-body phase space Monte Carlo calculations. The results indicate that most of the three-proton coincidences result from three nucleon absorption. The total three-nucleon absorption cross section is estimated to be σ3N=4.5±1.0 mb from phase-space integration. This cross section does not account for the discrepancy between total absorption cross sections and two-nucleon absorption cross sections.

AB - Three-proton emission cross sections for the 4He(π+, ppp)n reaction were measured at Tπ+=165 MeV over a wide angular range in a kinematically complete experiment. The momentum distribution of the undetected neutron and angular correlations have been compared with three- and four-body phase space Monte Carlo calculations. The results indicate that most of the three-proton coincidences result from three nucleon absorption. The total three-nucleon absorption cross section is estimated to be σ3N=4.5±1.0 mb from phase-space integration. This cross section does not account for the discrepancy between total absorption cross sections and two-nucleon absorption cross sections.

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VL - 230

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EP - 35

JO - Physics Letters B

JF - Physics Letters B

IS - 1-2

ER -

Multi-nucleon pion absorption in the ⁴He(π⁺, ppp)n reaction

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