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Differential cross sections for the process pi +d to pp at seven energies in the region Tpi =280-450 MeV and in the angular range theta * approximately=4-90 degrees have been measured on the LNPI synchrocyclotron. The results include 94 new data points. The measurements have been carried out using a ten-channel hodoscope set-up. Statistical errors are between 2.5% and 7.8% depending on the scattering angle and Tpi . The data obtained indicate that there is an essential contribution from the partial wave with orbital angular momentum l=3 over the whole energy range considered. The authors also observe a noticeable contribution from the l=4 partial wave to the differential cross sections of the pi +d to pp reaction from Tpi >or=357 MeV. The total cross sections for the process pi +d to pp are also presented.

9 data tables

Table 1

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Table 3

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Measurement of the differential cross section of the reaction $\pi^+ d \rightarrow p p$ at medium energy

Andreev, V.A. ; Borkowski, M.Ya. ; Gaditsky, V.G. ; et al.

LENI-82-759, 1982.

Inspire Record 1509422 DOI 10.17182/hepdata.76719

None

1 data table

Table 1

No description provided.

The near-threshold production of Phi mesons in p p collisions.

Hartmann, M. ; Maeda, Y. ; Keshelashvilli, I. ; et al.

Phys.Rev.Lett. 96 (2006) 242301, 2006.

Inspire Record 713863 DOI 10.17182/hepdata.41806

The pp->pp phi reaction has been studied at the Cooler Synchrotron COSY-Juelich, using the internal beam and ANKE facility. Total cross sections have been determined at three excess energies epsilon near the production threshold. The differential cross section closest to threshold at epsilon=18.5 MeV exhibits a clear S-wave dominance as well as a noticeable effect due to the proton-proton final state interaction. Taken together with data for pp omega-production, a significant enhancement of the phi/omega ratio of a factor 8 is found compared to predictions based on the Okubo-Zweig-Iizuka rule.

7 data tables

Table 1

K+ K- invariant mass distribution.

Table 2

Total cross sections.

Table 3

Differential decay distribution of the K+ in the rest frame of the PHI-meson w.r.t. the beam.

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a0(980)+ resonance production in p p --> d K+ anti-K0 reactions close to threshold.

Kleber, V. ; Buescher, Markus ; Chernyshev, V. ; et al.

Phys.Rev.Lett. 91 (2003) 172304, 2003.

Inspire Record 617741 DOI 10.17182/hepdata.31682

The reaction pp->d K+ Kbar0 has been investigated at an excess energy of Q=46 MeV above the (K+ Kbar0) threshold with ANKE at COSY-Juelich. From the detected coincident dK+ pairs about 1000 events with a missing Kbar0 were identified, corresponding to a total cross section of sigma(pp->d K+ Kbar0)=(38 +/- 2(stat) +/- 14(syst)) nb. Invariant-mass and angular distributions have been jointly analyzed and reveal s-wave dominance between the two kaons, accompanied by a p-wave between the deuteron and the kaon system. This is interpreted in terms of a0+(980)-resonance production.

6 data tables

Table 1

Total cross section for P P --> DEUT K+ KBAR0.

Table 2

Centre of mass angular distribution of the deuteron with respect to the direction of the incoming proton.

Table 3

Centre of mass angular distribution of the vector joining the K+ and KBAR0 with respect to the direction of the incoming proton.

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Precision measurement of the quasi-free p n --> d Phi reaction close to threshold.

Maeda, Y. ; Hartmann, M. ; Keshelashvili, I. ; et al.

Phys.Rev.Lett. 97 (2006) 142301, 2006.

Inspire Record 720728 DOI 10.17182/hepdata.31513

The quasi-free pn->dphi reaction has been studied at the Cooler Synchrotron COSY-Juelich, using the internal proton beam incident on a deuterium cluster-jet target and detecting a fast deuteron in coincidence with the K+K- decay of the phi-meson. The energy dependence of the total and differential cross sections are extracted for excess energies up to 80 MeV by determining the Fermi momentum of the target neutron on an event-by-event basis. Though these cross sections are consistent with s-wave production, the kaon angular distributions show the presence of p waves at quite low energy. Production on the neutron is found to be stronger than on the proton but not by as much as for the eta-meson.

3 data tables

Table 1

Differential cross section dependence on the angle of the K+ from the PHI decay in the PHI rest frame.

Table 2

Differential cross section dependence on the polar angle of the PHI in the overall rest frame.

Table 3

Total cross section as a function of the excess energy.

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DIFFERENTIAL CROSS-SECTIONS FOR pi PRODUCTION AT THETA (pi) = 60-degrees in 1-GeV PROTON INTERACTION WITH NUCLEI

MEASUREMENT OF DIFFERENTIAL CROSS-SECTIONS OF pi+ p AND pi- p ELASTIC SCATTERING IN THE REGION 425-MeV TO 640-MeV

Differential Cross-Sections for pi- p and pi+ p Elastic Scattering Between 400-GeV/c and 590-MeV/c

STUDY OF REACTIONS WITH NEUTRON PRODUCTION IN P P AND P D COLLISIONS AT 1-GEV. (IN RUSSIAN)

Differential Cross-sections for $\pi^\pm$ Production at 0-degrees From Proton Proton and Proton - Deuteron Collisions at 1-{GeV}

MEASUREMENT OF THE DIFFERENTIAL CROSS-SECTIONS FOR THE PI+ D ---> P P REACTION AT PION ENERGIES OF 280-MEV, 300-MEV, 330-MEV, 357-MEV, 390-MEV, 420-MEV AND 450-MEV

Measurement of the differential cross section of the reaction $\pi^+ d \rightarrow p p$ at medium energy

The near-threshold production of Phi mesons in p p collisions.

a0(980)+ resonance production in p p --> d K+ anti-K0 reactions close to threshold.

Precision measurement of the quasi-free p n --> d Phi reaction close to threshold.