HEPData Search

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Study of the k0 lambda and k0 sigma0 final states from pi- p interactions at 3.9 gev/c

Abramovich, M. ; Blumenfeld, H. ; Chaloupka, V. ; et al.

Nucl.Phys.B 27 (1971) 477-485, 1971.

Inspire Record 68729 DOI 10.17182/hepdata.33623

Differential cross sections and polarizations have been measured for the reaction π − p → K 0 Λ and π − p → K 0 Σ 0 at 3.9 GeV/ c π − momentum. Comparison of these data with those of the related reactions K − n → π − Λ and K − p → π − Σ + (at approximately the same c.m. energy) indicate that simple Regge-pole models involving only K ∗ (890) and K ∗ (1420) exchange are unable to describe all the features of the data. On the other hand, comparison of the π − p → K 0 Σ 0 data with that of π + p → K + Σ + shows that the data are consistent with absence of exotic strange-meson exchange.

1 data table

Table 1

No description provided.

A study of k pi pi states produced in 10 gev/c k+ p interactions

Barnham, K.W.J. ; Colley, D.C. ; Dodd, W.P. ; et al.

Nucl.Phys.B 25 (1970) 49-74, 1971.

Inspire Record 68842 DOI 10.17182/hepdata.33832

We present an analysis of the K ππ system produced in 10 GeV/ c K + p interactions. We show that the low-mass enchancement between 1.2 and 1.4 GeV/ c 2 on the K ππ mass spectrum is predominantly 1 + throughout, give the relative amplitudes for the decay of this system into K ∗ (890) π and K ρ , and offer new evidence for the presence of two 1 + resonances in this mass region.

2 data tables

Table 1

No description provided.

Table 2

DIFFERENTIAL CROSS SECTION FOR THREE MASS BANDS IN Q-REGION. NORMALIZATION UNCERTAIN - NO UNITS FOR D(SIG)/DT GIVEN ON FIGURE. NUMERICAL VALUES TAKEN FROM THE COMPILATION LST7V2 FOX 72B. ERRORS ADDED AS 1/SQRT(EVENTS).

Polarization parameter in k+- p and anti-p p elastic scattering at 10 and 14 gev/c

Borghini, M. ; Dick, L. ; Olivier, J.C. ; et al.

Phys.Lett.B 36 (1971) 497-500, 1971.

Inspire Record 69141 DOI 10.17182/hepdata.37261

Results on polarization in K − p, K + p and p̄p forward elastic scattering at 10 and 14 GeV/ c are presented.

6 data tables

Table 1

No description provided.

Table 2

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Table 3

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K- p elastic scattering at 14.25 gev/c

Miller, R.J. ; Phelan, J.J. ; Smith, J.R. ; et al.

Phys.Lett.B 34 (1971) 230-232, 1971.

Inspire Record 69333 DOI 10.17182/hepdata.28529

The K − p differential and total elastic cross-sections have been measured at 14.25 GeV/ c . The results have been compared with various Regge models.

1 data table

Table 1

No description provided.

Evidence for b(1220) production in an analysis of the reaction k- d ---> p(s) lambda pi+ pi- pi- pi0 at 3 gev/c

The SABRE collaboration Hoogland, W. ; Kluyver, J.C. ; De Vries, T. ; et al.

Phys.Lett.B 33 (1970) 631-634, 1970.

Inspire Record 69351 DOI 10.17182/hepdata.28535

In an analysis of the reaction K − n →Λ4π at 3 GeV c we find evidence for the production of the B(1220) resonance, mainly decaying in ωπ. For the mass and width we find (1236 ± 15) MeV c 2 and (132±20) MeV c 2 respectively. The cross section for the reaction K − n→ Λ +B(1220) is found to be (102±26) μ b.

1 data table

Table 1

No description provided.

Observation of k(l) - k(s) regeneration from liquid hydrogen. aachen-cern-turin collaboration,

Darriulat, P. ; Grosso, C. ; Holder, M. ; et al.

Phys.Lett.B 33 (1970) 433-437, 1970.

Inspire Record 69387 DOI 10.17182/hepdata.28718

The K L K S transmission regeneration of a K L beam traversing a liquid hydrogen target has been observed over the momentum interval 3.0–6.0 GeV/ c . Results are in good agreement with predictions based on dispersion relations.

2 data tables

Table 1

Regeneration amplitude.

Table 2

No description provided.

A study of the k0 pi+ p final state produced in k+ p interactions at 10 gev/c

Barnham, K.W.J. ; Colley, D.C. ; Jobes, M. ; et al.

Nucl.Phys.B 28 (1971) 171-183, 1971.

Inspire Record 68704 DOI 10.17182/hepdata.32749

We present the results of a study of 1173 uniquely identified events of the K 0 π + p final state produced in 10 GeV/ c K + p interactions. This final state is dominated by the quasi two-body processes K + p → K 0 N ∗+ (890 p and K + p → K ∗+ (1420) p . The background is very low and there is little overlapping of resonance bands. We present cross sections, t -distributions and decay angular distributions for the contributing reaction channels. Dips are observed near t = 0 in the differential cross sections for all three processes.

5 data tables

Table 1

BREIT-WIGNER FIT.

Table 2

NUMERICAL VALUES TAKEN FROM THE COMPILATION LST7V2 FOX 72B.

Table 3

No description provided.

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PHOTOPRODUCTION OF K+ HYPERON FROM HYDROGEN AND DEUTERIUM AT 11-GeV

Boyarski, A. ; Diebold, Robert E. ; Ecklund, Stanley D. ; et al.

Phys.Lett.B 34 (1971) 547-550, 1971.

Inspire Record 60853 DOI 10.17182/hepdata.5801

Using an 11-GeV bremsstrahlung beam and the SLAC 20-GeV spectrometer, we have measured K + missing mass spectra from hydrogen and deuterium at five angles with momentum transfer squared ranging from 0.025 to 0.46 GeV 2 . Steps in the spectra as a function of missing mass were found corresponding to production of Λ , Σ , Σ 1385 + Λ 1405 and Λ 1520 . The ratio Σ − and Σ 0 production is not consistent with pure isotopic spin 1 2 in the t -channel for the reaction γ N→K + Σ . The cross sections for γ N → K + Σ 1385 compared with γ N→ πΔ violate an SU(3) prediction.

4 data tables

Table 1

'3'.

Table 2

No description provided.

Table 3

No description provided.

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ASYMMETRY IN pi+ PHOTOPRODUCTION FROM A POLARIZED TARGET AT 5-GeV AND 16-GeV

Morehouse, Charles C. ; Borghini, M. ; Chamberlain, Owen ; et al.

Phys.Rev.Lett. 25 (1970) 835, 1970.

Inspire Record 60947 DOI 10.17182/hepdata.3373

We have measured the asymmetry of the cross section for γp→π+n from a polarized target at 5 and 16 GeV. The range of four-momentum transfer was 0.02<~−t<~1.0 GeV2. The π+ mesons were produced in a polarized butanol target and detected with the Stanford Linear Accelerator Center 20−GeVc spectrometer. A sizable asymmetry was found at both 5 and 16 GeV, a typical value being -0.6 near −t=0.3 GeV2. A small amount of data on the asymmetry of other photoproduction processes was also obtained.

5 data tables

Table 1

No description provided.

Table 2

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Table 3

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