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Inclusive Production of Meson Resonances in $K^- p$ Interactions at 110-{GeV}/$c$

The Aachen-Berlin-CERN-Cracow-London-Vienna-Warsaw collaboration Gottgens, R. ; Ransone, G. ; Sixel, P. ; et al.

Z.Phys.C 12 (1982) 323, 1982.

Inspire Record 169125 DOI 10.17182/hepdata.2138

Total and differential cross sections ofK*−(890),K*−(890),$\bar K^{ * 0} $(890),K*0(890),$\bar K^{ * 0} $(1430) andϱ0(770) produced inK−p interactions at 110 GeV/c are presented. The cross sections of the neutral resonances show a smooth increase with energy from 10 to 110 GeV/c incident momentum. For theK*+(890) and theK*0(890), i.e. the resonances with strangenessS=+1, this rise is quite significant: their cross sections practically double between 32 GeV/c and 110 GeV/c incidentK− momentum. About 50% of the neutral kaons and 30% of charged pions produced inK−p interactions at our energy are found to be decay products of the resonances considered.

8 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Inclusive Production of Sigma+- (1385) in K- p Interactions at 10-GeV/c and 16-GeV/c

The Aachen-Berlin-CERN-London-Vienna collaboration Grassler, H. ; Seyfert, H.H. ; Wieczorek, H. ; et al.

Nucl.Phys.B 118 (1977) 189-198, 1977.

Inspire Record 110722 DOI 10.17182/hepdata.35526

The inclusive production of Σ + (1385) and Σ − (1385) has been studied in K − p interactions at 10 and 10 and 16 GeV/ c . It is found that the cross sections for the reactions K − p → Σ ± (1385) + anything are approximately constant in the energy range form 10 to 32 GeV/ c , being ≈ 350 μ b for Σ + (1385) and ≈ 250 μ b for Σ − (1385). The d σ d p ⊥ 2 distributions for Σ ± (1385) fall off exponentially with increasing p ⊥ 2 , with sloped of about 3 (GeV/ c ) −2 . The d σ /d x distributions for Σ + (1385) and Σ − (1385) are markedly different: the production of Σ − (1385) is symmetrical forwards and backwards in the c.m.s.; for Σ + (1385), the distribution is the same as for Σ − (1385) in the forward direction, but presents a large excess of events in the backward direction. This indicates that for the production of both Σ + (1385) and Σ − (1385) the fragmentation of the incoming kaon is negligible. The fragmentation of the target proton is negligible for Σ − (1385), but it is important for Σ + (1385) and is responsible for the excess (∼100 μ b) of its cross section over that for Σ − (1385).

4 data tables

Table 1

Axis error includes +- 0.0/0.0 contribution (?////RES-DEF(RES=SIG(1385P13) ,BACK=CORRECTED)//CORRECTED FOR UNSEEN DECAY MODES (PDG 1974)).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////RES-DEF(RES=SIG(1385P13) ,BACK=CORRECTED)//CORRECTED FOR UNSEEN DECAY MODES (PDG 1974)).

Table 3

Axis error includes +- 0.0/0.0 contribution (?////RES-DEF(RES=SIG(1385P13) ,BACK=CORRECTED)//CORRECTED FOR UNSEEN DECAY MODES (PDG 1974)).

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Inclusive $\phi$ Production in $K^- p$ Interactions at 110-{GeV}/$c$ and Search for Structure in $\phi \pi^-$

The Bombay-CERN-Cracow-Innsbruck-London-Vienna-Warsaw collaboration Banerjee, S. ; Ganguli, S.N. ; Gurtu, A. ; et al.

Z.Phys.C 31 (1986) 401, 1986.

Inspire Record 217420 DOI 10.17182/hepdata.15873

Results on inclusive ϕ production inK−p interactions at 110 GeV/c are presented. The production cross section is found to be larger than in πp andpp interactions at similar energies, suggesting OZI allowed$s\bar s$ fusion to be the dominant mechanism in ϕ production. Thex distributions of ϕ and$\bar K^{*0} $ are found to be similar to each other over the entirex range suggesting an overall strangeness suppression factor of 0.20±0.04 in the sea to be the dominant source of the difference in the cross section for ϕ and$\bar K^{*0} $. There is no evidence of a narrowφπ− state around 2.1 GeV/c2 as suggested byK+ experiments, but there is some excess of events in the region 1.94−1.98 GeV/c2 consistent with theF-meson mass as observed ine+e− experiments.

2 data tables

Table 1

Errors contain both statistics and systematics.

Table 2

F(XL) is invariant cross section.