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A study of the reactions K-d → K-d and K-d → K-(ps) at 4.5 GeV/c

par De Clercq, Catherine;Johnson, Denis;Lemonne, Jacques ;Peeters, Philippe ;Renton, Peter;Van Binst, Paul ;Vanhomwegen, G.;Wickens, John H.
Référence Nuclear physics. B, 126, 3, page (397-416)
Publication Publié, 1977-08

Article révisé par les pairs

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Résumé :

Results are presented concerning K-d and K-n elastic scattering at an incident momentum of 4.5 GeV/c. The high-energy Glauber formalism has been used in analyzing the data in which the nucleon scattering amplitudes are parameterized and employing the spherical and quadrupole deuteron form factors. An impulse approximation analysis of the K-n differential scattering cross section fitted to a single exponential of the form dσ/dt)0eBt, leads to the result (dσ/dt)0 = 21.3 + mn; 5.5 mb/(GeV/c)2and B = 6.9 + mn; 0.5 (GeV/c)-2. A global fit has been made to existing K + mn;N two-body scattering data at this energy in order to determine the scattering amplitudes. It was found that the K-n and K-p elastic amplitudes are dominantly imaginary with a relatively small contribution from spin-flip amplitudes. The slopes of the differential elastic cross sections for K-n and K-p are nearly equal, as are those for K + n and K + p. However, the value of the slope for K + is smaller than that for K- at this energy. © 1977.