Abstract
360 GeV/c proton-proton elastic scattering data obtained at the European Hybrid Spectrometer (EHS) are presented. The differential cross sections of elastic and inelasticpp-interactions are studied as a function of the impact parameter. The results are compared to those obtained at other energies. They are interpreted in the framework of a simple geometrical Monte-Carlo model of inelastic collisions considering protons as composite particles having a definite effective radius with valence quarks inside. The model calculations indicate an increase of the effective radii both of protons and of valence quarks and an increase of the proton opacity with increasing energy. Using this model a description of the overlap function for the total cross section is obtained. A mechanism involving interactions of coloured quarks is proposed leading to a splitting of the overlap function for the total cross section into elastic, inelastic and inelastic diffraction components.
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U. Amaldi, K.R. Schubert: Nucl. Phys. B 166 (1980) 301
G. Alberi, G. Goggi: Phys. Rep. 74 (1981) 1;
M. Kamran: Phys. Rep. 108 (1984) 275;
R. Castaldi, G. Sanguinetti: Ann. Rev. Nucl. Part. Sci. 35 (1985) 351
J. Dias de Deus: Nucl. Phys. B 59 (1973) 231; A.J. Buras, J. Dias de Deus: Nucl. Phys. B71 (1974) 481; R. Henzi, P. Valin: Phys. Lett. 132B (1983) 443
J.L. Bailly et al.: Z. Phys. C—Particles and Fields 23 (1984) 205
V. Bartenev et al.: Phys. Rev. Lett. 31 (1973) 1367
G. Barbiellini et al.: Phys. Lett. 39B (1972) 663; A. Böhm et al.: Phys. Lett. 49B (1974) 401; N. Kwak et al.: Phys. Lett. 58B (1975) 233; M.G. Albrow et al.: Nucl. Phys. B108 (1976) 1; U. Amaldi et al.: Phys. Lett. 66B (1977) 390; L. Baksky et al.: Nucl. Phys. B141 (1978) 1; E. Nagy et al.: Nucl. Phys. B150 (1979) 221; D.S. Ayres et al.: Phys. Rev. D15 (1977) 3105; A. Schiz et al.: Phys. Rev. D24 (1981) 26; G. Arnison et al.: Phys. Lett. 128B (1983) 336
V.L. Savrin et al.: Sov. J. Nucl. Phys. 10 (1969) 495 (transl.)
U. Amaldi, M. Jacob, G. Matthiae: Ann. Rev. Nucl. Sci. 26 (1976) 385
T. Fearnly: CERN/EP 85-137
M.I. Bogoljubski et al.: Sov. J. Nucl. Phys. 33 (1981) 66 (transl.)
J. Pumplin: Phys. Rev. D 8 (1973) 2899
K. Goulianos: Phys. Rep. 101 (1983) 171
R. Henzi, P. Valin: Phys. Lett. 48B (1974) 119
D.S. Ayres et al.: Phys. Rev. D 14 (1976) 3092
A. Shiz et al.: Phys. Rev. D 4 (1981) 26
C. Bourrely, A. Martin: CERN TH 3931
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Chuo University, Tokyo, Japan
Hiroshima University, Hiroshima, 725 Japan
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EHS-RCBC Collaboration., Bailly, J.L., Banerjee, S. et al. An impact parameter analysis of proton-proton elastic and inelastic interactions at 360 GeV/c. Z. Phys. C - Particles and Fields 37, 7–16 (1987). https://doi.org/10.1007/BF01442063
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DOI: https://doi.org/10.1007/BF01442063