Are missing-mass measurements the key for understanding subthreshold particle production?

Müller, H.

doi:10.1007/bf02769688

Cited by 4 publications

(9 citation statements)

References 10 publications

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“…Thus, one can conclude from the viewpoint of the ROC model that the key quantity for understanding subthreshold particle production is the number of participating nucleons. A direct experimental determination of this number for subthresholdp production is highly desirable as discussed in [34] for the case of K − production in pA reactions. If we consider particle production far above the threshold as in figure 3 then the main difference to subthreshold production consists in the higher value of the energy available for the production of the considered particle.…”

Section: Comparison With Experimental Datamentioning

confidence: 99%

“…The ROC model is implemented as a Monte Carlo generator which samples complete events for hadronic as well as nuclear reactions. It was successfully tested for pp interactions up to ISR energies in [29,30], while nuclear reactions were considered in the papers [28,[31][32][33][34]. A detailed description of the model is given in [30] for the case of pp interactions and in a recent publication [28] for hadron-nucleus interactions.…”

Section: The Modelmentioning

confidence: 99%

Section: Comparison With Experimental Datamentioning

confidence: 99%

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Subthreshold antiproton production in pC, dC and C reactions

Müller¹,

Komarov²

2004

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

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Abstract. Data from KEK on subthresholdp as well as on π ± and K ± production in pC, dC and αC reactions at energies between 3.5 and 12.0 A GeV are described for the first time within a unified approach. We use a model which considers a nuclear reaction as an incoherent sum over collisions of varying numbers of projectile and target nucleons. It samples complete events and thus allows for the simultaneous consideration of all final particles including the decay products of the nuclear residues. The enormous enhancement of thep cross section, as well as the moderate increase of meson production in dC and αC compared to pC reactions, is well reproduced. In our approach, the observed enhancement near the production threshold is mainly due to the contributions from the interactions of few-nucleon groups.

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Section: Comparison With Experimental Datamentioning

confidence: 99%

Section: The Modelmentioning

confidence: 99%

Section: Comparison With Experimental Datamentioning

confidence: 99%

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Subthreshold antiproton production in pC, dC and C reactions

Müller¹,

Komarov²

2004

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

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“…The model was successfully tested for pp interactions up to ISR energies in [38,39], while nuclear reactions were considered in the papers [34,40,41,42]. In the following the basic ideas of the ROC model relevant for this paper are summarised.…”

Section: The Modelmentioning

confidence: 99%

Subthreshold antiproton production in proton–carbon reactions

Komarov

Müller

Sibirtsev

2004

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

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Data from KEK on subthresholdp as well as on π ± and K ± production in proton-nucleus reactions are described at projectile energies between 3.5 and 12.0 GeV. We use a model which considers a hadron-nucleus reaction as an incoherent sum over collisions of the projectile with a varying number of target nucleons. It samples complete events and allows thus for the simultaneous consideration of all particle species measured. The overall reproduction of the data is quite satisfactory. It is shown that the contributions from the interaction of the projectile with groups of several target nucleons are decisive for the description of subthreshold production. Since the collective features of subthreshold production become especially significant far below the threshold, the results are extrapolated down to COSY energies. It is concluded that anp measurement at ANKE-COSY should be feasible, if the high background of other particles can be efficiently suppressed.

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“…The Rossendorf collision (ROC) model [11,12,13,14,15,16,17] is basically a statistical approach in deriving the relative contributions of the various final channels by calculating their statistical weights from the phase-space factors, which are, however, strongly modified by empiri-cal transition matrix elements. It aims at describing soft hadron production in the energy region between particle production thresholds and ISR energies.…”

Section: Introductionmentioning

confidence: 99%

Soft hadron production in pp interactions up to ISR energies

Müller

2001

Eur. Phys. J. C

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Abstract. Soft hadron production is described as a two-step process, where the interaction of the partonic constituents of the colliding hadrons leads to the production of intermediate subsystems (fireballs), which decay subsequently into hadrons. The weights of the various final states are derived from the corresponding phase-space factors modified by empirical transition elements. The results compare well with data at energies between particle production thresholds and ISR energies. Special emphasis is put on correlation data, which offer the opportunity to shed some light on the question whether particle production proceeds via fireballs or strings.

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Are missing-mass measurements the key for understanding subthreshold particle production?

Cited by 4 publications

References 10 publications

Subthreshold antiproton production in pC, dC and C reactions

Subthreshold antiproton production in pC, dC and C reactions

Subthreshold antiproton production in proton–carbon reactions

Soft hadron production in pp interactions up to ISR energies

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