Energy dependence of nucleon-nucleon inelastic total cross-sections

Bystrický, J.; Lehar, F.; Perrot, F.; Siemiarczuk, T.; Winternitz, P.

doi:10.1051/jphys:0198700480110190100

Cited by 101 publications

(117 citation statements)

References 25 publications

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“…Isospin decomposition according to Refs. [53][54][55] gives roughly half of the background processes to be isovector, i.e. about 15% of the total cross section.…”

Section: Description Of the D * (2380) Resonance Processmentioning

confidence: 99%

Examination of the nature of the ABC effect

2017

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Recently it has been shown by exclusive and kinematically complete experiments that the appearance of a narrow resonance structure in double-pionic fusion reactions is strictly correlated with the appearance of the so-called ABC effect, which denotes a pronounced low-mass enhancement in the ππ-invariant mass spectrum. Whereas the resonance structure got its explanation by the d * (2380) dibaryonic resonance, a satisfactory explanation for the ABC effect is still pending. In this paper we discuss possible explanations of the ABC effect and their consequences for the internal structure of the d * dibaryon. To this end we examine and review a variety of proposed explanations for the ABC effect, add a new hypothesis and confront all of them with the experimental results for the np → dπ 0 π 0 and np → npπ 0 π 0 reactions, which are the most challenging ones for this topic.

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“…Isospin decomposition according to Refs. [53][54][55] gives roughly half of the background processes to be isovector, i.e. about 15% of the total cross section.…”

Section: Description Of the D * (2380) Resonance Processmentioning

confidence: 99%

Examination of the nature of the ABC effect

2017

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“…Other cross sections, like the total π 0 -n cross sections and the cross section for particular channels, have been obtained from the data following the method of Ref. [14], which tries to exploit the isospin symmetry as far as possible. A model for the generation of the final states is nevertheless needed, as we explained, and the features of this model were chosen as simple as possible.…”

Section: Discussionmentioning

confidence: 99%

“…First of all the cross sections σ T (NN → NNnπ) for the production of n pions in a collision between two nucleons in a given isospin state T are constructed, from adjusted parametrizations of experimentally known cross sections for specific final channels, following closely the method of Ref. [14] (we used more data, compiled in Ref. [15], especially at high energy).…”

Section: Description Of Multipion Productionmentioning

confidence: 99%

Extension of the Liège intranuclear cascade model at incident energies between 2 and 12 GeV. Aspects of pion production

Pedoux

2011

Nuclear Physics A

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The validity of the standard version of the Liège Intra-Nuclear Cascade (INCL4) model, which has been shown to be quite successful for the description of spallation reactions, is limited to an upper incident energy of ∼2 GeV, because inelastic elementary processes are restricted to the excitation and de-excitation of the Delta resonance. In this paper, the INCL4 model is extended to higher incident energy by including other inelastic elementary collisions. However, excitation of heavier baryonic resonances is replaced by direct multipion production in elementary nucleon-nucleon and pion-nucleon collisions. The predictions of the modified model for production of charged pions by proton and pion beams off nuclei are compared with experimental data of the HARP Collaboration for beam energies between 2 and 12 GeV. The apparent duality between the approach based on excitation of numerous baryonic resonances and our approach is briefly discussed.

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“…At the present bombarding energy the production of π 0 and η mesons is known to proceed mostly via resonance excitation (e.g., R = (1232), N * (1440), N * (1520), N * (1535), etc.) and is dominated by one-meson and two-meson channels [16,[22][23][24]. For ρ 0 and ω production we have, however, assumed phase-space population in the pp → ppX reactions (X = ρ 0 or ω) with no further attempt at a more refined description of the high-mass region.…”

Section: Comparison With a Simulated Cocktailmentioning

confidence: 99%

“…A wealth of information on exclusive pion production in nucleon-nucleon reactions has indeed been accumulated over the past 50 years (see Refs. [22,23] for reviews and Ref. [25] for a compilation).…”

Section: Inclusive Meson Productionmentioning

confidence: 99%

Inclusive dielectron production in proton-proton collisions at 2.2 GeV beam energy

Agakishiev¹,

Álvarez‐Pol²,

Bałanda³

et al. 2012

Phys. Rev. C

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Data on inclusive dielectron production are presented for the reaction p + p at 2.2 GeV measured with the high acceptance dielectron spectrometer (HADES). Our results supplemented data obtained earlier in this bombarding energy regime with the dilepton spectrometer (DLS) and HADES. The comparison with the 2.09 GeV DLS data is discussed. The reconstructed e + e − pair distributions are confronted with simulations, revealing an excess yield at invariant masses around 0.5 GeV/c 2 . Inclusive cross sections of neutral pion and η production are obtained.

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Energy dependence of nucleon-nucleon inelastic total cross-sections

Cited by 101 publications

References 25 publications

Examination of the nature of the ABC effect

Examination of the nature of the ABC effect

Extension of the Liège intranuclear cascade model at incident energies between 2 and 12 GeV. Aspects of pion production

Inclusive dielectron production in proton-proton collisions at 2.2 GeV beam energy

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