Close-to-threshold meson production in hadronic interactions

Moskal, P.; Wolke, M.; Khoukaz, A.; Oelert, W.

doi:10.1016/s0146-6410(02)00143-6

Cited by 113 publications

(124 citation statements)

References 385 publications

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“…On the other hand, the spectra do not seem to be affected by the existence of the 3 He bound state. Nevertheless, the data are well represented by the phenomenological form [210] σ T (pd → pd η) = C (Q/ε) 2 …”

Section: The Pd → Pdη Reactionmentioning

confidence: 99%

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Production of η and η′ mesons on nucleons and nuclei

Krusche¹,

Wilkin²

2015

Progress in Particle and Nuclear Physics

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The production of η and η mesons in photon-and hadron-induced reactions on free and quasifree nucleons and on nuclei is reviewed. The extensive database on γN → ηN , for both proton and neutron targets, is described in detail and its implications for the search for N resonances much heavier than the dominant S 11 (1535) discussed. Though less is currently known about the production of the η or of ηπ pairs, these also offer tantalizing prospects in the search for the missing isobars. The more limited data available on pion-induced production are still necessary ingredients in the partial wave analysis discussed.The production of the η-meson in pp and pn collisions shows once again the strong influence of the S 11 (1535) isobar, which is in contrast to the relatively weak behaviour seen near threshold for η production. This difference is reflected in the important final state interaction effects of the η in nuclei that may even lead to this meson being "bound" in some systems. The evidence for this is reviewed for both γA and pA collisions. The inclusive photoproduction of η, η , and ηπ pairs from nuclei provides further information regarding the production mechanism and the interaction of the η and η with nuclei and the ηπ pairs may even allow access to low mass ηA systems that are forbidden in direct single-meson photoproduction.

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Section: The Pd → Pdη Reactionmentioning

confidence: 99%

“…Earlier articles have surveyed various aspects of the field [1,2,3,4,5], but possibly with not such a wide remit. Our primary thrust will be to discuss physics phenomena rather than the details of theoretical models.…”

Section: Introductionmentioning

confidence: 99%

Production of η and η′ mesons on nucleons and nuclei

Krusche¹,

Wilkin²

2015

Progress in Particle and Nuclear Physics

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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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“…It is also important to underline that the correlation of protons was never exploited till now in near threshold meson productions, and as an observable different from the distributions of cross sections, it may deepen our understanding of the dynamics of meson production. Particularly favourable are exclusive experiments conducted close to the kinematical threshold where the fraction of the available phase-space associated with low relative momenta between the ejectiles is large [8].…”

Section: Introductionmentioning

confidence: 99%

Two-proton correlation function for thepp→pp+ η andpp→pp+pionsreactions

Klaja¹,

Moskal²,

Czerwiński³

et al. 2010

J. Phys. G: Nucl. Part. Phys.

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Abstract. For the very first time, the correlation femtoscopy method is applied to a kinematically complete measurement of meson production in the collisions of hadrons. A two-proton correlation function was derived from the data for the pp → ppX reaction, measured near the threshold of η meson production. A technique developed for the purpose of this analysis permitted to establish the correlation function separately for the production of the pp + η and of the pp + pions systems. The shape of the two-proton correlation function for the ppη differs from that for the pp(pions) and both do not show a peak structure opposite to results determined for inclusive measurements of heavy ion collisions.

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Close-to-threshold meson production in hadronic interactions

Cited by 113 publications

References 385 publications

Production of η and η′ mesons on nucleons and nuclei

Production of η and η′ mesons on nucleons and nuclei

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

Two-proton correlation function for thepp→pp+ η andpp→pp+pionsreactions

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