Measurement of Polarization in K- p Elastic Scattering at Low-Energies

Ehrlich, R.D. ; Lovett, B. ; Mishina, M. ; et al.
Phys.Lett.B 71 (1977) 455-459, 1977.
Inspire Record 126323 DOI 10.17182/hepdata.27506

The polarization parameter has been measured in K − p elastic scattering at eight incident beam momenta between 650 MeV/ c and 1071 MeV/ c throughout a center of mass angular range of −0.75 < cos θ ∗ < 0.85 . Experimental results and coefficients of Legendre polynomial fits to the data are presented and compared with other measurements and partial wave analysis.

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

Zeller, M. ; Ehrlich, R.D. ; Etkin, A. ; et al.
In *Durham Conference, Hyperon Resonance - 70*, Durham 1970, 169, 1970.
Inspire Record 63648 DOI 10.17182/hepdata.37181

abstract only

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Asymmetry measurements for elastic scattering of k+ mesons by polarized protons

Ehrlich, R.D. ; Etkin, A. ; Glodis, P. ; et al.
Phys.Rev.Lett. 26 (1971) 925-928, 1971.
Inspire Record 69016 DOI 10.17182/hepdata.21466

We report measured values of the asymmetry in the elastic scattering of K+ mesons from polarized protons. The data were obtained at fourteen incident K+ momenta from 1.33 to 2.58 GeVc; the approximate angular range covered was −0.85<cosθKc.m.<0.9. We compare our results with other available measurements and note several significant differences.

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New Measurements of Polarization and Differential Cross-Sections in K+ p Elastic Scattering in the 1.7-GeV/c-3-GeV/c Range

Patton, R. ; Barletta, W.A. ; Ehrlich, R.D. ; et al.
Phys.Rev.Lett. 34 (1975) 975-978, 1975.
Inspire Record 102699 DOI 10.17182/hepdata.21222

We have measured the polarization parameter and differential cross sections in K+p elastic scattering from a polarized target from small |t| and small |u| at five momentum points: 1.7, 2.1, 2.4, 2.7, and 3.0 GeV/c. The polarized-proton target was butanol cooled at 0.5° by a He3-He4 refrigerator; a combination of multiwire proportional chambers and scintillation counters detected the scattered particles. The results for small |u| are discussed in the context of pure Regge-pole models with exchange-degenerate Λ trajectories.

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Coulomb-Nuclear Interference in pi+- p and K+- p Elastic Scattering Below 3-GeV: Measurements, Real Parts and K+- p Dispersion Relations

Baillon, P. ; Bricman, C. ; Ferro-Luzzi, M. ; et al.
Nucl.Phys.B 105 (1976) 365-430, 1976.
Inspire Record 101037 DOI 10.17182/hepdata.13243

The differential cross sections for π + p elastic scattering at0.6, 1.0, 1.5, 2.0, GeV/ c for π - p at 1.0, 1.5, 2.0 GeV/ c , for K - p at 1.2, 1.8, 2.6 GeV/ c and for K - p at 0.9, 1.2, 1.4, 1.6, 1.8, 2.6 GeV/ c have been measured with an overall accuracy ofthe order of 1 to 2% in an electronics experiment over the angular region corresponding to momentum transfer t between 0.0005 and 0.10 GeV 2 . Making use of the interference effects between the Coulomb and the nuclear interaction, we have determined the magnitude and sign of the real part of the scattering amplitude near t = 0. The K ± p real parts have been used in a dispersion relation to derive the value of the KNΛ coupling constant.

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Polarization in proton-beryllium and proton-proton scattering at 1.7 GeV

Bareyre, P. ; Detoeuf, J.F. ; Van Rossum, L. ; et al.
Nuovo Cim. 20 (1961) 1049-1066, 1961.
Inspire Record 1185005 DOI 10.17182/hepdata.37750

The polarization in p-Be and p-p scattering has been measured by counter techniques at a proton kinetic energy of 1.74 GeV. The maximum polarization in p-Be scattering was found to beP max==0.19±0.04 and occurs at an angleθ max⩾3.5°. Inelastic scatters were rejected when the inelastic momentum loss was more than about 1% in the first scatter (magnetic analysis) or more than about 5% in the second scatter (Čerenkov threshold counter). The maximum polarization in p-p scattering isP max=0.30±0.09 and occurs at an angle 35°<θ max<<55° (c.m.). The angular dependence of the polarization is consistent with a distribution proportional to sin 2θ within large statistical errors. Optical model calculations applied to the data on p-Be scattering yield an almost all imaginary central potential of about 43 MeV and a spin-orbit potential of between 0.9 MeV and 2.0 MeV which is also almost all imaginary, in contrast with the predominantly real spin-orbit potential needed to explain the large polarization in the region of several hundred MeV.

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Makdisi, Y. ; Marshak, M.L. ; Mossberg, B. ; et al.
Phys.Rev.Lett. 45 (1980) 1529-1533, 1980.
Inspire Record 159455 DOI 10.17182/hepdata.20701

The large-angle analyzing power A in proton-neutron elastic scattering at 2, 3, and 6 GeV/c with use of the polarized proton beam at the Argonne zero-gradient synchrotron and a liquid deuterium target have been measured. The measurements, the first at high energy, show that A is large (20-40%) and negative over much of the angular range and shows no decrease with incident energy, unlike the earlier data at smaller angles.

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Polarization in p p Elastic Scattering at Small |t|

Klem, R.D. ; Courant, H.W. ; Lee, J. ; et al.
Phys.Rev.D 15 (1977) 602-603, 1977.
Inspire Record 124114 DOI 10.17182/hepdata.24547

We have measured the polarization parameter for proton-proton elastic scattering at p0 = 6 GeV/c for |t|<0.5 (GeV/c)2 using the polarized proton beam at the Argonne Zero Gradient Synchrotron. These data, together with all previous measurements in this t region, are well fitted by the empirical relation P = (0.481±0.010)(−t)12exp(2.291±0.085)t.

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Hollas, C.L. ; Cremans, D.J. ; Ransome, R.D. ; et al.
Phys.Lett.B 143 (1984) 343-346, 1984.
Inspire Record 208375 DOI 10.17182/hepdata.30531

The depolarization parameter D NN for pp elastic scattering at θ cm = 90 ° has been measured at twelve momenta between 0.9 and 1.5 GeV/ c . The moduli of the three transversity amplitudes T 1 , T 3 , and T 4 have been extracted from these data and from previous measurements of the differential cross section and spin correlation parameter A NN (90 °). Smooth energy dependence is found for all three amplitude moduli.

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The Real Part of the Forward Scattering Amplitude in pi+- p Elastic Scattering Below 2-GeV/c

Baillon, P. ; Bricman, C. ; Eberhard, P. ; et al.
Phys.Lett.B 50 (1974) 387-390, 1974.
Inspire Record 89683 DOI 10.17182/hepdata.27947

The differential cross section for π ± p elastic scattering below 2 GeV/ c has been measured at small forward pion angles by an electronics experiment. The interference effects observed between the Coulomb and the nuclear interaction have been used to determine the magnitude and sign of the real parts of the π ± p forward scattering amplitude. The latter are compared to the values predicted by the dispersion relations.

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A Test of the Optical Theorem

Eberhard, P.H. ; Tripp, R.D. ; Declais, Y. ; et al.
Phys.Lett.B 53 (1974) 121-124, 1974.
Inspire Record 90454 DOI 10.17182/hepdata.27919

Forward differential cross sections for π − p elastic scattering at 1.0, 1.5 and 2.0 GeV/ c show that the square of the imaginary parts of the nuclear scattering agrees with the optical theorem prediction within ±3%, when averaged over the three momenta.

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Backward $K^- p$ Elastic Scattering and 0-degree $\Sigma^- \pi^+$ Production

Alston-Garnjost, M. ; Hamilton, R.P. ; Kenney, R.W. ; et al.
Phys.Rev.D 21 (1980) 1191-1205, 1980.
Inspire Record 131715 DOI 10.17182/hepdata.24193

In this paper we report measurements of the backward K−p differential cross section at 49 momenta covering the momentum range 476-1084 MeV/c. The statistical precision achieved, typically 2.5%, is an order of magnitude better than previous measurements. The systematic errors for this reaction are about 1%. The differential cross section for the reaction K−p→Σ−π+ where the π+ emerges at 0° has also been measured at 32 momenta with comparable improvement in precision over previous experiments. A partial-wave analysis of the K¯N channels including the new K−p backward elastic data is presented.

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Absolute p p elastic cross-sections from 492-MeV to 793-MeV using CH-2 targets

Simon, A.J. ; Glass, G. ; McNaughton, M.W. ; et al.
Phys.Rev.C 53 (1996) 30-34, 1996.
Inspire Record 429629 DOI 10.17182/hepdata.25831

pp-elastic differential cross sections are reported at 492 MeV from 40° to 90°, and at 576, 642, 728, and 793 MeV from 75° to 90° c.m., with an absolute accuracy of less than 1%. These data, obtained with polyethylene targets, agree with recent measurements at the same energies obtained with a liquid-hydrogen target. © 1996 The American Physical Society.

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Absolute p p elastic cross-sections from 492-MeV to 793-MeV

Simon, A.J. ; Glass, G. ; McNaughton, M.W. ; et al.
Phys.Rev.C 48 (1993) 662-675, 1993.
Inspire Record 363783 DOI 10.17182/hepdata.26001

Absolute pp-elastic-differential cross sections were measured at incident energies 492, 576, 642, 728, and 793 MeV from about 30° to 90° c.m. The total uncertainty was determined to be less than 1%, made possible by particle counting for beam normalization and extensive cross-checks of systematic effects. These new data are consistent with previous data above 600 MeV but have uncertainties about a factor of 10 smaller. Near 500 MeV these data are consistent with 90° data from TRIUMF, but differ significantly from similar data from PSI; the cause of this discrepancy is discussed.

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Topological and Leading Particle Cross-Sections for 147-GeV/c pi- p Interactions.

Fong, D.G. ; Heller, M. ; Shapiro, A.M. ; et al.
Phys.Lett.B 53 (1974) 290-296, 1974.
Inspire Record 93415 DOI 10.17182/hepdata.27916

Results are reported based on a study of π − p interactions at 147 GeV/ c in the FERMILAB 30-inch Proportional Wire Hybrid Bubble Chamber System. We have measured the topological cross sections and separated two-prong elastic and inelastic channels. In addition, we have extracted leading particle cross sections using the increased momentum resolution of the downstream proportional wire chambers. We have compared our results with experiments and predictions of a simple fragmentation hyphothesis.

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Measurement of the Real Part of the Forward Scattering Amplitude in K+- p Elastic Scattering Between 0.9-GeV/c and 2.6-GeV/c

Baillon, P. ; Bricman, C. ; Ferro-Luzzi, M. ; et al.
Phys.Lett.B 50 (1974) 377-382, 1974.
Inspire Record 89483 DOI 10.17182/hepdata.27960

The differential cross section for K ± p elastic scattering has been measured in the forward meson direction (0.0008 < t < 0.1 GeV 2 ) in an electronics experiment at incident momenta between 0.9 and 2.06 GeV/ c . The high statistics and absolute normalisation of the data allow a good determination of the real part of the forward nuclear scattering amplitude by means of the Coulomb-nuclear interference effect.

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Elastic scattering of pi- p, K- p and anti-p p at 25-GeV/c and 40-GeV/c

Antipov, Yu.M. ; Ascoli, G. ; Busnello, R. ; et al.
Nucl.Phys.B 57 (1973) 333-347, 1973.
Inspire Record 80976 DOI 10.17182/hepdata.32554

Elastic diffraction scattering of π − , K − and p on protons has been measured at 25 and 40 GeV/c at the Serpukhov Proton Accelerator. Differential elastic cross sections and diffraction slopes are presented in the momentum-transfer interval 0.07–0.80 (GeV/ c ) 2 and compared with existing data at lower energies.

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Elastic pi- p, k- p and anti-p p scattering at momenta of 25 and 40 gev/c

Antipov, Yu.M. ; Ascoli, G. ; Busnello, R. ; et al.
Yad.Fiz. 18 (1973) 353-363, 1973.
Inspire Record 84824 DOI 10.17182/hepdata.19259
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