Measurements ofdpbackward elastic scattering at 3.43, 4.50, 5.75, and 6.60GeVcincident deuteron momentum

Abstract

Differential cross sections for a$ elastic scattering from 60" to 175" center of momentum ( c n . ) were measured at 3.43, 4.50, 5.75, and 6.60 GeV/c incident deuteron momentum. The measurements were made with a two-arm magnetic spectrometer, making use of multiwire proportional chamber detectors. The deuterons were accelerated at the Bevatron of the Lawrence Berkeley Laboratory. Data are compared with predictions of the baryon-pickup model and the one-pion-exchange model. The backward dip at 180" c.m. for 4.5 GeV/c, predicted by Craigie and Wilkin using the one-pion-exchange model, is'not observed, but reasonable fits to the momentum variation and angular distributions are found. When the data are plotted against the variable A of the baryon-pickup model, the s dependence is greatly reduced.

Indication of asymptotic scaling in the reactions dd → p 3H, dd → n 3He, and pd → pd

“…The dp → dp data obtained in different experiments [22,23,24,25,26] at the c.m.s. scattering angle θ cm = 127…”

“…The high χ 2 n.d.f. value can be, probably, addressed to uncertainties in systematic errors which are different in various experiments [26]. Therefore, new, more detailed data, are requested preferably from one experiment covering the whole interval of energies T d = 1 − 5 GeV.…”

“…Experimental data in (a, b) are taken from [20]. In (c, d), the experimental data (black squares),(•), (△), (open square) and (•) are taken from [22], [23], [24], [25] and [26], respectively. The dashed curves give the s −22 (a) and s −16 (c) behaviour.…”

Deuteron breakuppd→{pp}snwith forward emission of a fastDymov1, Komarov2, Macharashvili3 et al. 2010Phys. Rev. C140110View full textAdd to dashboardCite

“…As shown in Fig. 3, the selected deuterons produce a clean peak in the momentum distributions, and the data were normalized to the available experimental data [38,[44][45][46][47][48][49] obtained under similar kinematical conditions. Based on the available data, an interpolation was carried out, using an empirical expression…”

“…In pd elastic scattering many measurements were performed at backward proton angles θ p 170 • [38,[44][45][46][47][48]50]. The measured cross sections drop monotonously with decreasing proton scattering angles, exhibiting a wide backward peak.…”