Arsene, I.G.
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A20 Production by Charge Exchange in pi+ n Interactions at 4-GeV/c

Emms, M.J. ; Jones, G.T. ; Kinson, J.B. ; et al.
Phys.Lett.B 58 (1975) 117-120, 1975.
Inspire Record 98783 DOI 10.17182/hepdata.27809

A partial wave analysis of the reaction π + n → π + π − π 0 p yields an A 0 2 production cross section of 225 ± 30μb for momentum transfer squared < 1 (GeV/ c ) 2 ; the differential cross-section and density matrix are presented and compared with ω 0 production in the light of theoretical models.

2 data tables
Table 1

Axis error includes +- 10/10 contribution.

Table 2

ASSUMING NO POPULATION OF HELICITY 2 DENSITY MATRIX ELEMENTS IN T-CHANNEL FRAME. THIS MM = 1+, 1-, 2+, 2- NOTATION REFERS TO THAT SUM OR DIFFERENCE OF HELICITY M DENSITY MATRIX ELEMENTS CORRESPONDING ASYMPTOTICALLY TO NATURAL (+) OR UNNATURAL (-) PARITY EXCHANGE.


Production of $\rho^0$ and $F^0$ in 4 GeV $\pi+D$ interactions

Charlesworth, J.A. ; Sekulin, R.L. ; Emms, M.J. ; et al.
AIP Conf.Proc. 13 (1973) 317-321, 1973.
Inspire Record 83445 DOI 10.17182/hepdata.32392

We have applied the Estabrooks and Martin analysis to a sample of 5279 events produced in the reactionπ+n ⇒ pρ0, and have made a density matrix study, including a positivity analysis, of theJ = 0, 1, 2density matrix in the f0 region, using a sample of 2385 events.

4 data tables
Table 1

S-CHANNEL MOMENTS.

Table 2

T-CHANNEL MOMENTS.

Table 3

S-CHANNEL FRAME.

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