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A measurement of the complete differential cross section for the reaction pp→dπ+ at 3.00, 3.20, 3.43, 3.65, 3.83, 4.00, 4.20, and 5.05 GeVc incident proton momentum has been made in an attempt to establish the role of the Δ (1950) in this region. The data show that the previously observed enhancement in the forward cross section between 3 and 4 GeVc due to this isobar is an effect which damps out quickly as the production angle departs from zero degrees, in contrast with the well-known enhancement at 1.35 GeVc, which is evident at all angles. In particular, the one-pion-exchange model is in poor agreement with the extended set of data. A detailed description is given of a novel proportional-wire-chamber system which facilitated the selection of this rather rare reaction from a very high competing background.

3 data tables match query

Table 1

Axis error includes +- 6/6 contribution.

Table 2

Axis error includes +- 6/6 contribution.

Table 3

No description provided.

Cross sections for p p ---> d rho+ from 4.0 to 12.3 gev/c and a search for the delta+

Anderson, H.L. ; Dixit, M. ; Evans, H.J. ; et al.

Phys.Rev.Lett. 26 (1971) 108-112, 1971.

Inspire Record 69063 DOI 10.17182/hepdata.21629

Forward differential cross sections for isospin-1 bosons produced in p+p→d+x+ were measured using a deuteron missing-mass spectrometer at a small angle between 4.0- and 12.3−GeVc incident momentum. Differential cross sections for π+ and ρ+ were extracted from the spectra using phase-space backgrounds. They range from 10.4 to 0.4 μb/sr for π+ and from 1.4 to 0.3 μb/sr for ρ+. A bump near 6 GeVc appears in both dπ and dρ channels. No clear evidence is seen for higher-mass bosons. The possible δ+ cross sections average less than 0.01 μb/sr.

3 data tables match query

Table 1

TECHNIQUE USED...ELECTRONIC. TABLE 1.

Table 2

TECHNIQUE USED...MISSING MASS. BREIT WIGNER USED WITH FIXED WIDTH (150 MEV) AND VARIABLE MASS (LATTER VARIED WITH MOMENTA FROM 715 TO 765 MEV). 6 PERCENT NORMALIZATION ERROR; 20 PERCENT FROM BREIT WIGNER FIT. TABLE 1.

Table 3

TECHNIQUE USED...MISSING MASS. CROSS-SECTIONS CORRESPOND TO VERY NARROW DELTA (962).

Measurements of d p backward elastic scattering at 3.43, 4.50, 5.75, and 6.60 gev/c incident deuteron momentum

Dubal, L. ; Hargrove, C.K. ; Hincks, E.P. ; et al.

Phys.Rev.D 9 (1974) 597-603, 1974.

Inspire Record 93110 DOI 10.17182/hepdata.21938

Differential cross sections for dp elastic scattering from 60° to 175° center of momentum (c.m.) were measured at 3.43, 4.50, 5.75, and 6.60 GeVc 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 GeVc, 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 Δ of the baryon-pickup model, the s dependence is greatly reduced.

4 data tables match query

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Vector Meson Production in $\pi^- p$ Interactions at 360-{GeV}/$c$

The LEBC-EHS collaboration Aguilar-Benitez, M. ; Bailly, J.L. ; Batalov, A.A. ; et al.

Z.Phys.C 44 (1989) 531, 1989.

Inspire Record 278763 DOI 10.17182/hepdata.15359

The inclusive production of vector mesons (charged ρ(770), ω(783), ϕ(1020) and neutralK*(892)) in π−p interactions at 360 GeV/c is studied. The data are based on 160 000 reconstructed events recorded in the NA 27 Experiment using the LEBC-EHS facility at CERN. The production cross sections in the forward hemisphere in c.m.s. and the longitudinal momentum distributions are determined. The results are compared with data obtained at lower energies.

17 data tables match query

Table 1

No description provided.

Table 2

Upper limits of cross sections.

Table 3

Cross sections extrapolated to x > 0.

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Measurement of the total cross section for the pion charge-exchange reaction Cl-37(pi+,pi0)Ar-37 at energies 280-MeV, 335-MeV, and 390-MeV.

Measurement of the spin rotation parameters R and A in pi- p elastic scattering at 450-MeV and 560-MeV

FIRST MEASUREMENTS OF THE SPIN ROTATION PARAMETERS R AND A IN ELASTIC PI P SCATTERING NEAR LOW LYING PION - NUCLEON RESONANCES

MEASUREMENT OF POLARIZATION PARAMETER P IN ELASTIC PI+ P SCATTERING IN THE ENERGY RANGE 500-MEV - 600-MEV. (IN RUSSIAN)

MEASUREMENT OF POLARIZATION PARAMETER P IN ELASTIC PI- P SCATTERING FOR ENERGIES OF 490-MeV AND 600-MeV. (IN RUSSIAN)

Measurement of the polarization parameter P in elastic π+p scattering at 335, 370, and 410 MeV

Measurements of the differential cross-section of the reaction p p ---> d pi+ from 3.0 to 5.0 gev/c

Cross sections for p p ---> d rho+ from 4.0 to 12.3 gev/c and a search for the delta+

Measurements of d p backward elastic scattering at 3.43, 4.50, 5.75, and 6.60 gev/c incident deuteron momentum

Vector Meson Production in $\pi^- p$ Interactions at 360-{GeV}/$c$