The production of high-momentum particles and resonances in pp collisions at the CERN intersecting storage rings

doi:10.1016/0550-3213(83)90076-7

Nuclear Physics B

Volume 217, Issue 1, 9 May 1983, Pages 11-30

https://doi.org/10.1016/0550-3213(83)90076-7 Get rights and content

Abstract

Data are reported on the momentum distributions of Λ, Λ (1520), φ (1020), $Λ and p$ , inclusively produced between 1° and 2° with respect to one of the primary proton beams at the CERN Intersecting Storage Rings. In addition, the decay angular distribution of the Λ(1520), the ratio of the cross sections for the production of Σ⁻ (1385) and Σ⁺ (1385) and the ratios among different charge states of the pairs Λπ, ΛK, Δ⁺⁺ (1232)π and ππ have been measured. These data are confronted with current ideas on fragmentation.

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We consider Λ and $\bar{Λ}$ production in a wide range of proton scattering experiments. The produced Λ and $\bar{Λ}$ may or may not contain a diquark remnant of the beam proton. The ratio of these two production mechanisms is found to be a simple universal function $r = {[κ / (y_{p} - y)]}^{i}$ of the rapidity difference $y_{p} - y$ of the beam proton and the produced Λ or $\bar{Λ}$ , valid over four orders of magnitude, from $r \approx 0.01$ to $r \approx 100$ , with $κ = 2.86 \pm 0.03 \pm 0.07$ , and $i = 4.39 \pm 0.06 \pm 0.15$ .
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¹: Now at CERN, Geneva, Switzerland.

²: Now at the University of Bologna, Italy.

³: Now at Hughes Aircraft Company, Los Angeles, USA.

⁴: Now at the National Institute for Nuclear and High-Energy Physics, Amsterdam, The Netherlands.

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Nuclear Physics B

Abstract

References (30)

Correlations between high momentum particles in proton-proton collisions at high energies

The production of lambdas and antilambdas in the forward region at the CERN Intersecting Storage Rings facility

Nucl. Phys.

The measurement of inclusive lambda, K-short and lambda bar production from interactions of 400 GeV/c protons with hydrogen

Z. Phys.

Phys. Rev. Lett.

Z. Phys.

Z. Phys.

Nucl. Phys.

Nucl. Phys.

Phys. Lett.

Nucl. Phys.

Phys. Lett.

Nucl. Phys.

Phys. Rev.

Cited by (17)

Ratio between two Λ and Λ¯ production mechanisms in p scattering

Estimates of relative yields of strange baryons and antibaryons from pp and pA interactions

Study of event mixing and its application to the extraction of resonance signals

Λ(1520) production at SPS and RHIC energies

Recent D0 measurements of forward-backward asymmetries for pp ? B<sup>±</sup>, ?<sup>0</sup><inf>b</inf>, and ?<sup>0</sup><inf>s</inf> production

Measurement of φ -meson production at forward rapidity in p+p collisions at s =510 GeV and its energy dependence from s =200 GeV to 7 TeV MEASUREMENT of φ -MESON PRODUCTION at ... A. ADARE et al.