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Observation of Resonance in the $K^{0}_{1}K^{0}_{1}$ System

Beusch, W. ; Fischer, W.E. ; Gobbi, B. ; et al.

Phys.Lett.B 25 (1967) 357-361, 1967.

Inspire Record 52538 DOI 10.17182/hepdata.29450

We have analyzed 2560 events in the final-state K O 1 K O 1 n produced in π − p interactions at 5, 7 and 12 GeV/ c . We observe the S ∗ (1070), f O and A 2 decaying into K O 1 K O 1 . Resonance parameters, cross sections, and branching ratios are given.

1 data table

Table 1

Cross section times branching ratio.

Photoproduction of Single Positive Pions Between 1.2 and 3 GeV

Buschhorn, G. ; Carroll, J. ; Eandi, R.D. ; et al.

Phys.Rev.Lett. 17 (1966) 1027-1030, 1966.

Inspire Record 50803 DOI 10.17182/hepdata.21795

Differential cross sections for the reaction γ+p→n+π+ are presented for incident photon energies between 1.2 and 3 GeV and pion center-of-mass production angles of 15 to 50 deg.

11 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Polarization Parameter in p-p Scattering from 1.7 to 6.1 BeV

Grannis, P. ; Arens, J. ; Betz, F. ; et al.

Phys.Rev. 148 (1966) 1297-1302, 1966.

Inspire Record 50914 DOI 10.17182/hepdata.26642

The polarization parameter in proton-proton scattering has been measured at incident proton kinetic energies of 1.7, 2.85, 3.5, 4.0, 5.05, and 6.15 BeV and for four-momentum transfer squared between 0.1 and 1.0 (BeV/c)2. The experiment was done with an unpolarized proton beam from the Bevatron striking a polarized proton target. Both final-state protons were detected in coincidence and the asymmetry in counting rate for target protons polarized parallel and antiparallel to the scattering normal was measured. The maximum polarization was observed to decrease from 0.4 at 1.7 BeV to 0.2 at 6.1 BeV. The maximum of the polarization at all energies studied occurs at a four-momentum transfer squared of 0.3 to 0.4 (BeV/c)2.

6 data tables

Table 1

'1'.

Table 2

'2'.

Table 3

'3'.

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Small-Angle Electron-Proton Elastic Scattering Cross Sections for Momentum Transfers between 10 and 105 f $^{-2}$

Bartel, W. ; Dudelzak, B. ; Krehbiel, H. ; et al.

Phys.Rev.Lett. 17 (1966) 608-611, 1966.

Inspire Record 846566 DOI 10.17182/hepdata.21827

None

8 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Photoproduction of the Eta Particle at 800-1000 MeV. A Comparison Between the piN and the etaN Systems

Bacci, C. ; Penso, G. ; Salvini, G. ; et al.

Phys.Rev.Lett. 16 (1966) 157-161, 1966.

Inspire Record 944921 DOI 10.17182/hepdata.21793

None

1 data table

Table 1

No description provided.

Further Evidence for a Possible I=52 N* Resonance at 1580 MeV

Alexander, G. ; Benary, O. ; Reuter, B. ; et al.

Phys.Rev.Lett. 15 (1965) 207-210, 1965.

Inspire Record 944924 DOI 10.17182/hepdata.21831

None

1 data table

Table 1

Axis error includes +- 0.0/0.0 contribution (?////Not given).

Measurement of the Recoil Proton Polarization in Elastic $\pi^-p$ Scattering at $T_\pi=410$ and 492 MeV

Bareyre, P. ; Bricman, C. ; Longo, M.J. ; et al.

Phys.Rev.Lett. 14 (1965) 878-880, 1965.

Inspire Record 945162 DOI 10.17182/hepdata.21824

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Proton-Proton Elastic Scattering Involving Large Momentum Transfers

Cocconi, G. ; Cocconi, V.T. ; Krisch, A.D. ; et al.

Phys.Rev. 138 (1965) B165-B172, 1965.

Inspire Record 49634 DOI 10.17182/hepdata.26688

Twenty-nine proton-proton differential elastic cross sections for lab momenta p0 from 11 to 31.8 BeV/c, at four-momentum transfers squared, −t, from 2.3 to 24.4 (BeV/c)2, have been measured at the Brookhaven alternating gradient synchrotron. The circulating proton beam impinged upon a thin CH2 internal target. Both scattered protons from p−p elastic events were detected by scintillation-counter telescopes which were placed downstream from deflection magnets set at the appropriate angles to the incident beam. The angular correlation of the protons, their momenta, and the coplanarity of the events were determined by the detection system. The results show that at high momentum transfers the differential cross section, dσdt, depends strongly upon the energy; for −t=10 (BeV/c)2, the value of dσdt at p0=30 BeV/c is smaller by a factor∼1000 than at p0=10 BeV/c. At all energies, dσdt falls rapidly with increasing |t| for scattering angles up to about 65° (c.m.), while in the range from 65 to 90° the cross section falls only by a factor of about 2. The smallest cross section measured was 9×10−37 cm2 sr−1 (c.m.), at p0=31.8 BeV/c and −t=20.4 (BeV/c)2; this is about 3×10−12 of the zero-degree cross section at the same energy.

1 data table

Table 1

'1'. '2'.

pi--p Interactions at 683 MeV/c

Burnstein, R.A. ; Charlton, G.R. ; Day, T.B. ; et al.

Phys.Rev. 137 (1965) B1044-B1052, 1965.

Inspire Record 944965 DOI 10.17182/hepdata.983

Interactions of 683-MeV/c negative pions with protons were investigated using the BNL 14-in. hydrogen bubble chamber in a 17-kG field. Two thousand elastic scatterings were analyzed, yielding a cross section of 18.9±1.0 mb. No evidence for powers of cosθ higher than the second was observed in the elastic angular distribution. The angular distribution obtained was dσdω=(0.384±0.026)+(1.70±0.06)cosθ+(3.36±0.11)cos2θ mb/sr. The single-pion production reactions π−+p→π−+π0+p and π−+p→π−+π++n were studied in detail. A total of 441 π0 productions and 833 π+ productions were analyzed giving cross sections of 3.99±0.50 and 7.50±0.80 mb, respectively. The differential distributions for these inelastic processes are presented and compared with the predictions of the model of Olsson and Yodh. The distribution of events on the Dalitz plots for π0 production is accounted for by the model. However, for the π+ reaction, the model (so far developed) does not describe adequately the distribution of events on the Dalitz plot. In particular, the model fails to account for the enhancement at high (π+π−) effective masses in ππ mass distribution. The center-of-mass angular distributions for π0 and π+ production reactions are presented and compared with the model.

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.