PBAR P --> PI- PI+
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A measurement of anti-p p ---> pi+ pi- and anti-p p ---> k- k+ for small values of t and u at 3 and 4 gev/c

Brabson, A. ; Calvelli, G. ; Cittolin, S. ; et al.
Phys.Lett.B 42 (1972) 287-290, 1972.
Inspire Record 85008 DOI 10.17182/hepdata.28189

We have measured with good statistics the differential cross section for p p →π + π − , K + K − around 0°. Our data and previous results show that the s -dependence of dσ/d t has a value compatible with the appropriate baryon exchange.

6 data tables
Table 1

No description provided.

Table 2

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Table 3

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Comparison of the Line Reversed Channels anti-p p --> pi- pi+ and pi+ p --> p pi+ at 6-GeV/c

Stein, N.A. ; Edelstein, R.M. ; Green, D.R. ; et al.
Phys.Rev.Lett. 39 (1977) 378-381, 1977.
Inspire Record 124936 DOI 10.17182/hepdata.20964

Differential cross sections have been measured for p¯p→π−π+ (1) and its line-reversed partner π+p→pπ+ (2) in the range tmin>t>−1.5 (GeV/c)2 at 6 GeV/c. Clear structure is seen in the differential cross section for Reaction (1) at t∼−0.4 (GeV/c)2. However, this feature is quite different from the striking dip seen in (2) at t∼−0.15 (GeV/c)2, indicating a failure of line reversal and disagreement with simple Regge models.

2 data tables
Table 1

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Table 2

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