Total cross section of the pp→pp η reaction near threshold

A. M. Bergdolt; G. Bergdolt; O. Bing; A. Bouchakour; F. Brochard; F. Hibou; A. Moalem; A. Taleb; M. P. Combes-Comets; P. Courtat; R. Gacougnolle; Y. Le Bornec; E. Loireleux; F. Reide; B. Tatischeff; N. Willis; M. Boivin; B. M.K. Nefkens; F. Plouin

doi:10.1103/PhysRevD.48.R2969

Total cross section of the pp→pp η reaction near threshold

A. M. Bergdolt, G. Bergdolt, O. Bing, A. Bouchakour, F. Brochard, F. Hibou, A. Moalem, A. Taleb, M. P. Combes-Comets, P. Courtat, R. Gacougnolle, Y. Le Bornec, E. Loireleux, F. Reide, B. Tatischeff, N. Willis, M. Boivin, B. M.K. Nefkens, F. Plouin

Department of Physics

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122 Scopus citations

Abstract

The pp→pp η reaction is studied at energies near the η production threshold. The total cross sections at nominal machine energies of 1260, 1265, and 1300 MeV are 90±15, 790±120, and 3460±690 nb, respectively. None of the existing perturbative model calculations reproduces the energy dependence, which deviates strongly from phase space. This suggests that the cross section is enhanced in the near vicinity of the production threshold by a large η-pp scattering length.

Original language	English
Pages (from-to)	R2969-R2973
Journal	Physical Review D
Volume	48
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.48.R2969
State	Published - 1 Jan 1993

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevD.48.R2969

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Bergdolt, A. M., Bergdolt, G., Bing, O., Bouchakour, A., Brochard, F., Hibou, F., Moalem, A., Taleb, A., Combes-Comets, M. P., Courtat, P., Gacougnolle, R., Bornec, Y. L., Loireleux, E., Reide, F., Tatischeff, B., Willis, N., Boivin, M., Nefkens, B. M. K., & Plouin, F. (1993). Total cross section of the pp→pp η reaction near threshold. Physical Review D, 48(7), R2969-R2973. https://doi.org/10.1103/PhysRevD.48.R2969

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title = "Total cross section of the pp→pp η reaction near threshold",

abstract = "The pp→pp η reaction is studied at energies near the η production threshold. The total cross sections at nominal machine energies of 1260, 1265, and 1300 MeV are 90±15, 790±120, and 3460±690 nb, respectively. None of the existing perturbative model calculations reproduces the energy dependence, which deviates strongly from phase space. This suggests that the cross section is enhanced in the near vicinity of the production threshold by a large η-pp scattering length.",

author = "Bergdolt, {A. M.} and G. Bergdolt and O. Bing and A. Bouchakour and F. Brochard and F. Hibou and A. Moalem and A. Taleb and Combes-Comets, {M. P.} and P. Courtat and R. Gacougnolle and Bornec, {Y. Le} and E. Loireleux and F. Reide and B. Tatischeff and N. Willis and M. Boivin and Nefkens, {B. M.K.} and F. Plouin",

year = "1993",

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doi = "10.1103/PhysRevD.48.R2969",

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Bergdolt, AM, Bergdolt, G, Bing, O, Bouchakour, A, Brochard, F, Hibou, F, Moalem, A, Taleb, A, Combes-Comets, MP, Courtat, P, Gacougnolle, R, Bornec, YL, Loireleux, E, Reide, F, Tatischeff, B, Willis, N, Boivin, M, Nefkens, BMK & Plouin, F 1993, 'Total cross section of the pp→pp η reaction near threshold', Physical Review D, vol. 48, no. 7, pp. R2969-R2973. https://doi.org/10.1103/PhysRevD.48.R2969

TY - JOUR

T1 - Total cross section of the pp→pp η reaction near threshold

AU - Bergdolt, A. M.

AU - Bergdolt, G.

AU - Bing, O.

AU - Bouchakour, A.

AU - Brochard, F.

AU - Hibou, F.

AU - Moalem, A.

AU - Taleb, A.

AU - Combes-Comets, M. P.

AU - Courtat, P.

AU - Gacougnolle, R.

AU - Bornec, Y. Le

AU - Loireleux, E.

AU - Reide, F.

AU - Tatischeff, B.

AU - Willis, N.

AU - Boivin, M.

AU - Nefkens, B. M.K.

AU - Plouin, F.

PY - 1993/1/1

Y1 - 1993/1/1

N2 - The pp→pp η reaction is studied at energies near the η production threshold. The total cross sections at nominal machine energies of 1260, 1265, and 1300 MeV are 90±15, 790±120, and 3460±690 nb, respectively. None of the existing perturbative model calculations reproduces the energy dependence, which deviates strongly from phase space. This suggests that the cross section is enhanced in the near vicinity of the production threshold by a large η-pp scattering length.

AB - The pp→pp η reaction is studied at energies near the η production threshold. The total cross sections at nominal machine energies of 1260, 1265, and 1300 MeV are 90±15, 790±120, and 3460±690 nb, respectively. None of the existing perturbative model calculations reproduces the energy dependence, which deviates strongly from phase space. This suggests that the cross section is enhanced in the near vicinity of the production threshold by a large η-pp scattering length.

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U2 - 10.1103/PhysRevD.48.R2969

DO - 10.1103/PhysRevD.48.R2969

M3 - Article

SN - 0556-2821

VL - 48

SP - R2969-R2973

JO - Physical Review D

JF - Physical Review D

IS - 7

ER -

Total cross section of the pp→pp η reaction near threshold

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