Ansari, S.
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The Reactions pi+- p --> p pi+- pi+ pi- at 18.5-GeV/c

Lichtman, S. ; Biswas, N.N. ; Cason, N.M. ; et al.
Nucl.Phys.B 81 (1974) 31-44, 1974.
Inspire Record 1364 DOI 10.17182/hepdata.32176

Studies have been made of the reactions π + p→p π + π + π − and π − p→p π + π − π − , both at an incident pion momentum of 18.5 GeV/ c . The two-body (primarily Δ ++ and ϱ o and three-body (low-mass A enhancement, A 3 , N ∗ (1400), and N ∗ (1700)) subsystems are discussed. Cross sections for all significant channels of the reactions are given.

1 data table
Table 1

No description provided.


Measurement of the Backward Peaks in the Reactions pi- p --> K0 Lambda and pi- p --> K*0 (890) Lambda

Foley, K.J. ; Love, W.A. ; Ozaki, S. ; et al.
Phys.Rev.D 10 (1974) 2763, 1974.
Inspire Record 1420 DOI 10.17182/hepdata.24944

We present the differential cross sections near u=0 for the reactions π−p→K0Λ and π−p→K*0(890)Λ at incident pion momenta of 8 and 10.7 GeV/c. The differential cross section for the first reaction follows the exponential dependence on u previously observed, while the second shows a dip in the backward direction.

3 data tables
Table 1

Axis error includes +- 25/25 contribution.

Table 2

Axis error includes +- 25/25 contribution.

Table 3

Axis error includes +- 25/25 contribution.


Polarized Target Asymmetry in $\pi^+$ Photoproduction Between 0.3-GeV and 1.0-GeV at 130°

Feller, P. ; Fukushima, M. ; Horikawa, N. ; et al.
Nucl.Phys.B 102 (1976) 207, 1976.
Inspire Record 90055 DOI 10.17182/hepdata.36079

The polarized target asymmetry for γ + p → π + + n was measured at c.m. angles around 130° for the energy range between 0.3 and 1.0 GeV. A magnetic spectrometer system was used to detect π + mesons from the polarized butanol target. The data show two prominent positive peaks at 0.4 and 0.8 GeV and a deep minimum at 0.6 GeV. These features are well reproduced by the phenomenological analysis made by us.

1 data table
Table 1

No description provided.


Pion and Nucleon Dissociation in $\pi^- p \to \pi^- \pi^+ \pi^- p$ at 205 GeV/c

Bingham, H.H. ; Chew, D.M. ; Fretter, W.B. ; et al.
Phys.Lett.B 51 (1974) 397-401, 1974.
Inspire Record 90046 DOI 10.17182/hepdata.27930

In a 48 000-picture exposure of the Fermilab 30-inch hydrogen bubble chamber to a 205 GeV/ c π − beam, we have measured 169 events of the reaction, π − p → π − π + π − p, with a cross section of 635 ± 61 μ b. This reaction proceeds almost entirely via low mass π − → 3 π and p → p ππ dissociation. Factorization is satisfied for p → pππ dissociation in πp and pp interactions.

1 data table
Table 1

No description provided.


Measurement of the Polarization in the Forward Peak of pi- p --> K0 Lambda at 5-GeV/c

Beusch, W. ; Borghini, M. ; Lauper, S. ; et al.
Nucl.Phys.B 99 (1975) 53-60, 1975.
Inspire Record 89729 DOI 10.17182/hepdata.31783

The π − p→K 0 λ polarization has been measured at 5 GeV/ c in the range 0<− t <1.4 (GeV/ c ) 2 . The polarization is small for − t ⪅0.4 (GeV/ c ) 2 , becoming negative at the higher values of − t .

1 data table
Table 1

No description provided.


Approximate Scaling of Multiplicity Distributions as a Function of Missing Mass

Barshay, S. ; Engelmann, R. ; Kafka, T. ; et al.
Phys.Rev.Lett. 32 (1974) 1390, 1974.
Inspire Record 1032 DOI 10.17182/hepdata.21933

Data from p+p→p+X at 102, 205, and 405 GeV and from π−+p→p+X at 205 GeV exhibit an approximate scaling property in the charged-prong multiplicity distributions as a function of the missing mass for the range 5<~MX<~13 GeV.

1 data table
Table 1

No description provided.


A Study of the Reaction anti-p n --> anti-p p pi- at 14.6-GeV/c

Brucker, E.B. ; Koller, E.L. ; Raths, O. ; et al.
Phys.Rev.D 10 (1974) 1373, 1974.
Inspire Record 89251 DOI 10.17182/hepdata.25045

From a 98000-photograph exposure of the BNL 80-in. deuterium-filled chamber to a 14.6-GeV/c p¯ beam we have extracted those events that fit the channel p¯n→p¯pπ−. The cross section for this channel is measured to be 730 ± 50 μb. The cross section for the reaction p¯n→Δ¯−−(1238)p is determined to be 130 ± 30 μb. Evidence for target dissociation is presented. A comparison with the reaction π−n→π−pπ− at the same energy indicates agreement with factorization.

1 data table
Table 1

No description provided.


Negative Pion Production in Proton Proton Interactions at 69-GeV/c

The French-Soviet collaboration Bumazhnov, V.A. ; Ermolov, P.F. ; Fenyuk, A.S. ; et al.
Phys.Lett.B 50 (1974) 283-286, 1974.
Inspire Record 89197 DOI 10.17182/hepdata.27949

Inclusive spectra of π − production for pp interactions are discussed at 69 GeV/ c both in the central and in the fragmentation region and are compared to data at lower and higher energies. The p T dependence of the invariant structure function is also analysed.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Structure in the omega pi pi System at the A2 Mass Region

Karshon, U. ; Mikenberg, G. ; Pitluck, S. ; et al.
Phys.Rev.Lett. 32 (1974) 852, 1974.
Inspire Record 761 DOI 10.17182/hepdata.21283

Evidence is presented for an enhancement in the ωππ mass spectrum at the A2 mass region in π+p interactions at 5 GeV/c. Assuming this effect to be the A2, we calculate the decay rate relative to the ρπ decay mode and obtain the results 0.29 ± 0.08 and 0.10 ± 0.04 for the two final states A20Δ++ and A2+p, respectively. Possible explanations of the discrepancy between these numbers are suggested.

1 data table
Table 1

No description provided.


Backward production of rho0 and f0 mesons in pi+ n interactions at 6 gev/c

Dado, S. ; Engler, A. ; Kraemer, R.W. ; et al.
Phys.Lett.B 50 (1974) 275-279, 1974.
Inspire Record 95262 DOI 10.17182/hepdata.27950

Backward production of ϱ 0 and f 0 mesons in π + n interactions at 6 GeV/ c is presented. Total and differential cross sections are reported along with spin density matrix elements.

6 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

JACKSON (U) FRAME (Z=2).

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