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Using an 880 events per microbarn sample of K − p interactions at 4.2 GeV/ c the production and decay properties of the δ (970) have been investigated in the following reactions: K − p → Σ + (1385) ηπ − and K − p ar Σ + (1385)K 0 K − .

1 data table match query

Table 1

No description provided.

A PARTIAL WAVE ANALYSIS OF THE (K pi pi) SYSTEM IN THE REACTION pi- p ---> (K+ pi- pi0) LAMBDA AT 3.95-GeV/c

The CERN-College de France-Madrid-Stockholm collaboration Fernandez, C. ; Aguilar-Benitez, M. ; Cerrada, M. ; et al.

Z.Phys.C 16 (1982) 95, 1982.

Inspire Record 178875 DOI 10.17182/hepdata.16389

Results from a partial wave analysis of theKππ system produced in the hypercharge exchange reaction π−p→(K+π−π0)Λ at 3.95 GeV/c are presented. SignificantQ1 production is observed but no evidence is found forQ2 production thus confirming the results obtained in a previous decay Dalitz plot analysis of the same reaction. The relative phase behaviour of the 1+(Kϱ) partial waves obtained with the present analysis provides additional confirmation of the resonance interpretation of theQ1 enhancement. Information is also obtained about its production properties and the role played by the Λ polarization in the hypercharge exchange reaction. This is compared with the results obtained in the reactionK−p→(π+π−π0)Λ at 4 GeV/c.

6 data tables match query

Table 1

LAMBDA POLARIZATION CALCULATED AS AVERAGE POLARIZATION OF ALL 1 + (K RHO0) PARTIAL WAVES IN THE QLOW(1240) REGION.

Table 2

SPIN PARITY CONTENT OF (K PI PI) SYSTEM.

Table 3

CONTRIBUTION TO THE TOTAL JP=1+ INTENSITY FROM THE K* AND RHO ISOBARS.

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Q1 Production by Hypercharge Exchange in $\pi^- p$ Interactions at 3.95-{GeV}/$c$

The CERN-College de France-Madrid-Stockholm collaboration Rodeback, S. ; Sjogren, I. ; Holmgren, S.O. ; et al.

Z.Phys.C 9 (1981) 9, 1981.

Inspire Record 156683 DOI 10.17182/hepdata.13426

Q-meson production is studied in the hypercharge exchange reaction π-p → (Kππ)Λ at 3.95 GeV/c by selecting events witht(π- →Kππ)>1.2GeV2. An enhancement with a mass of 1294±10 MeV and a width of 66±15 MeV is observed in the (Kππ) mass distribution. A spin-parity analysis of the (Kππ) decay Dalitz plot shows the enhancement to be in theJP=1+S(Kϱ) wave and is therefore attributed toQ1-meson production. No evidence is found for the decayQ1→K0ω but limited statistics allow only placing an upper limit of 30% for the decay ratioKω/Kϱ0. TheQ1 production cross section fort(π- →Kππ)>1.2GeV2 is 8±1.3 μb. No evidence is found for the process π-p→Q2Λ withQ2→K*π for which the partial wave analysis gives an upper cross section limit of 2.5 μb at the 95% confidence level.

2 data tables match query

Table 1

PRODUCTION OF Q1 OF MASS 1294 +- 10 MEV, WIDTH 66 +- 15 MEV. IN BACKWARD HEMISPHERE, CROSS SECTION IS <0.5 MUB (CL = 95 PCT).

Table 2

UPPER LIMIT FOR PRODUCTION OF Q2 OF MASS AROUND 1400 MEV.

Evidence for the b pi decay mode of the omega (1670)

The Birmingham-CERN-Glasgow-Michigan State-Paris collaboration Baubillier, M. ; Bloodworth, I.J. ; Bossen, G.J. ; et al.

Phys.Lett.B 89 (1979) 131-135, 1979.

Inspire Record 142040 DOI 10.17182/hepdata.27266

Backward production of ω (1670) is observed in the reactions K − p→ φ + φ − ω 0 Λ 0 and K − p→ φ + φ − φ 0 φ 0 for | U ' Λ |<1.0 GeV 2 . The cross section for the ω (1670) → φ + φ − ω 0 decay mode is 1.90±0.35 μ b for 8.25 GeV/ c incident K − . Evidence is presented for the importance of the sequential decay, ω (1670) → B φ → ωφφ with a branching ratio ω (1670) → B φ /all ω (1670) → ωφφ =1.0± 0.25 0.00 .

1 data table match query

Table 1

No description provided.

PRODUCTION OF F-prime (1520) IN 8.25-GEV/C K- P INTERACTIONS

The BIRMINGHAM-CERN-GLASGOW-MICHIGAN STATE-PARIS collaboration Al- Harran, S. ; Baubillier, M. ; Bloodworth, I.J. ; et al.

Nucl.Phys.B 191 (1981) 26-38, 1981.

Inspire Record 172450 DOI 10.17182/hepdata.34233

We present results for the hypercharge exchange reaction K − p→f' λ from a high statistics experiment at 8.25 GeV/ c using the CERN 2m HBC. The total and differential cross sections have been measured; the polarisation of the Λ hyperon and the f' density matrix elements have been calculated as functions of momentum transfer. We also present detailed information on the relative strength of the natural and unnatural parity exchange contributions to the production mechanism.

5 data tables match query

Table 1

D-WAVE RELATIVISTIC BREIT-WIGNER RESONANCE PLUS POLYNOMIAL BACKGROUND FIT.

Table 2

FITTED FOR INDIVIDUAL TP BINS.

Table 3

No description provided.

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Production of Sigma (1660) in K- p Interactions at 4.2-GeV/c

The Amsterdam-CERN-Nijmegen-Oxford collaboration Timmermans, Jan ; Engelen, J.J. ; Heinen, P.M. ; et al.

Nucl.Phys.B 112 (1976) 77-106, 1976.

Inspire Record 108671 DOI 10.17182/hepdata.35709

The reaction of K − p → Σ + (1660) π − was studied in a 65 event/μb sample of Σππ(π), Λππ(π) and p K 0 π − final states. The main production features observed are that the Σ (1660) decaying into Σππ is mostly Λ (1405) π and is produced only at small t ; the Σ (1660) decaying into Σπ shows both forward and backward production. This confirms earlier results suggesting the existence of two Σ (1660) resonances. An Adair analysis and a (model-dependent) moments analysis find a J = 3 2 preference for the Σ + (1660)→ Λ (1405) π + → Σ + π − π + ; a Dalitz-Miller analysis of the decay Σ + (1660) → Λ (1405) π + → Σ − π + π + determines J P to be 3 2 − . For the Σ + (1660) → Σ 0 π + a moments analysis suggests J = 3 2 . Branching ratios are determined, which (with the exceptation of the Λ (1405) π mode) are in reasonable agreement with results from formation experiments for the J P = 3 2 − Σ(1660) resonance. We compare our branching ratios with SU(3) and SU(6) predictions; the latter comparison suggests that, unless there is strong configuration mixing, Σ (1660) → Λ (1405) π , if 3 2 − , cannot be a member of the (70, 1 − ) multiplet.

3 data tables match query

Table 1

No description provided.

Table 2

PRODUCTION ANGULAR DISTRIBUTIONS OF SIG(1670D13)+ DIFFER FOR THE TWO FINAL STATES <LAM(1405S01) PI+> AND <SIGMA PION> SUGGESTING THE EXISTENCE OF TWO SIG(1660) RESONANCES.

Table 4

PRODUCTION CROSS SECTIONS. BRANCHING RATIOS ARE PRESENTED IN TABLE 8.

Exotic Exchange Processes in $K^- p$ and $\pi^- p$ Interactions at 4-{GeV}/$c$

The CERN-College de France-Madrid-Stockholm collaboration Irving, A.C. ; Loverre, P.F. ; Armenteros, R. ; et al.

Nucl.Phys.B 193 (1981) 1-20, 1981.

Inspire Record 156213 DOI 10.17182/hepdata.34203

Exotic exchange processes observed in K − p and π − p scattering in the neighbourhoood of 4 GeV/ c are analysed in terms of standard models. Some new data on π − p induced processes are presented and used in the analysis. Regge-Regge cut predictions are found to be smaller than the data up to these energies. Baryonium exchange models are shown to be indistindistinguishable from Regge cut models as regards their phenomenological predictions. The double scattering quark model of Białas and Zalewski is compatible with data on the exotic exchange production of Σ and Y ∗ (1385), but fails for Ξ and Ξ ∗ (1530) production. Modifications of this model are discussed.

6 data tables match query

Table 1

No description provided.

Table 2

FORWARD (SMALL -T) CROSS SECTIONS. THE K- P CROSS SECTIONS ARE COMPUTED FROM THE ACNO DATA AT 4.2 GEV/C, M. MAZZUCATO ET AL., NP B178, 1 (1981).

Table 3

BACKWARD (SMALL -U) CROSS SECTIONS.

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Production and Decay of xi* (1820) in K- p Reactions at 4.2-GeV/c

The Amsterdam-CERN-Nijmegen-Oxford collaboration Gay, J.B. ; Armenteros, R. ; Berge, J.P. ; et al.

Phys.Lett.B 62 (1976) 477-480, 1976.

Inspire Record 108822 DOI 10.17182/hepdata.27651

Using a high statistics sample of K − p interactions at 4.2 GeV/ c , the production and decay properties of the Ξ ∗ (1820) are discussed. The mass and width are found to be M = (1823 ± 2) MeV and Γ = (21 ± 7) MeV. Evidence is found for Ξ ∗ (2030) in the Σ K ̄ channel and for a new Ξ ∗ at a mass of 2120 MeV in the ΛK − channel.

2 data tables match query

Table 1

XI(1820)- PRODUCTION CROSS SECTIONS ARE FOR -UP < 3 GEV**2 AND ARE CORRECTED FOR ISOSPIN AND UNSEEN DECAY MODES.

Table 2

No description provided.

Spin Parity Structure of the (anti-K pi pi)0 System Produced in the Charge Exchange Reaction K- p --> (anti-K0 pi+ pi-) n at 4.2-GeV/c

The AMSTERDAM-CERN-NIJMEGEN-OXFORD collaboration Vergeest, J.S.M. ; Cerrada, M. ; Chaloupka, V. ; et al.

Phys.Lett.B 62 (1976) 471-476, 1976.

Inspire Record 114349 DOI 10.17182/hepdata.27652

A partial wave analysis of the K 0 π + π − system produced in the charge exchange reaction K − p → ( K 0 π + π − ) n at 4.2 GeV/ c has been performed both as a function of Kππ mass and of t ′. The 1 + S wave forms the largest contribution to the K ππ system and peaks at roughly the same mass as the Q in diffractive K ππ production. The polarization properties of the 1 + S ( K ∗ π) and 1 + S (Kϱ) waves differ fromt those of the diffractive 1 + wave. There is some evidence for a resonance contribution to 1 + S ( K ∗ π) . The strong 2 + wave the K ∗ (1420) and the K ϱ/ K ∗ ϱ decay branching ratio determined to be 0.36±0.10. An enhancement with spin-parity 1 − is observed under K ∗ (1420) .

2 data tables match query

Table 1

CROSS SECTION CORRECTED FOR BREIT-WIGNER TAILS, THE TP CUT, UNSEEN <AK0 PI> AND <K RHO> DECAY MODES. BRANCHING RATIO K*(1420) --> <K RHO>/<K* PI> = 0.36 +- 0.10.

Table 2

No description provided.

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Asymmetry and differential cross section for elastic scattering of K- mesons by polarized protons

Production and Decay Properties of the Delta (970) Meson

A PARTIAL WAVE ANALYSIS OF THE (K pi pi) SYSTEM IN THE REACTION pi- p ---> (K+ pi- pi0) LAMBDA AT 3.95-GeV/c

Q1 Production by Hypercharge Exchange in $\pi^- p$ Interactions at 3.95-{GeV}/$c$

Evidence for the b pi decay mode of the omega (1670)

PRODUCTION OF F-prime (1520) IN 8.25-GEV/C K- P INTERACTIONS

Production of Sigma (1660) in K- p Interactions at 4.2-GeV/c

Exotic Exchange Processes in $K^- p$ and $\pi^- p$ Interactions at 4-{GeV}/$c$

Production and Decay of xi* (1820) in K- p Reactions at 4.2-GeV/c

Spin Parity Structure of the (anti-K pi pi)0 System Produced in the Charge Exchange Reaction K- p --> (anti-K0 pi+ pi-) n at 4.2-GeV/c