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Elastic scattering of anti-protons on protons at 5 gev/c evidence for a backward peak

Chabaud, V. ; Eide, A. ; Lehmann, P. ; et al.
Phys.Lett.B 38 (1972) 449-451, 1972.
Inspire Record 75820 DOI 10.17182/hepdata.5678

Antiproton-proton elastic scattering has been measured at 5 GeV/c. A total of 30 000 events were observed in the angular range 17° < θ cm < 136°, corresponding to 0.3 < − t < 7.7 (GeV/ c 2 ). In addition to the known dip at − t = 0.5 ( GeV / c ) 2 , we observe a structure at about − t = 2 (GeV/ c ) 2 and a backward peak with a slope4.1 ± 0.6 (GeV/ c ) 2 . The extrapolated differential cross-section at u = 0 is 1.3 ± 0.8 μ b/(GeV/ c ) 2 .

2 data tables match query
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Upper limits on rare two-body processes in k- p and anti-p p scattering at high energies

Birnbaum, D. ; Edelstein, R.M. ; Hien, N.C. ; et al.
Phys.Lett.B 31 (1970) 36-39, 1970.
Inspire Record 63230 DOI 10.17182/hepdata.6079

A missing mass spectrometer search was made for several two-body, double charge exchange reactions, including backward K −p and p̄p elastic scattering at 8 and 16 GeV/ c and small momentum transfer. No examples of any of these processes were observed.

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$\bar{p} p$ Elastic Scattering for Incident Momenta Between 1.0 and 2.50 BeV/c

Barish, B. ; Fong, D. ; Gomez, R. ; et al.
Phys.Rev.Lett. 17 (1966) 720-722, 1966.
Inspire Record 944917 DOI 10.17182/hepdata.203

None

3 data tables match query
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K- n and K- p Elastic Scattering in K- d Collisions from 1.2-GeV/c to 2.2-GeV/c

Declais, Y. ; Duchon, J. ; Louvel, M. ; et al.
CERN-77-16, 1977.
Inspire Record 121681 DOI 10.17182/hepdata.1343

None

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High-energy elastic scattering of pi-plus-minus, k-minus, and anti-p on hydrogen at c.m. angles from 22 degrees to 180 degrees

Owen, D.P. ; Peterson, F.C. ; Orear, J. ; et al.
Phys.Rev. 181 (1969) 1794-1807, 1969.
Inspire Record 55381 DOI 10.17182/hepdata.5487

Elastic π±−p, K−−p, and p¯−p scattering cross sections have been measured using three different experimental arrangements covering the c.m. angular regions ∼20°-120°, ∼135°-169°, and ∼165°-180° at incident momenta from 6 to 17 GeV/c. In the region 130°-180°, only π±−p scattering was measured. In the angular region near 180°, the energy dependences and shapes of the π−p backward peaks were determined up to crossed-momentum transfers of u∼−2 (GeV/c)2. At all energies, the π+−p backward peak had a sharp dip at u=−0.13 (GeV/c)2, with no similar effect in the π−−p case. Nearly complete angular distributions of π−−p elastic scattering from 20° to 180° have been obtained at 6 and 10 GeV/c. These results at 6 and 10 GeV/c as well as at 8 GeV/c reveal a sharp dip in π−−p scattering at t=−3 (GeV/c)2. Several structures in the form of dips or shoulders were seen in the p¯−p angular distributions also, with less pronounced structure observed in K−−p scattering. At fixed momentum transfer, all cross sections when expressed as dσdt appear to be decreasing with increasing energy.

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Proton proton triple scattering at 1.9 gev

Carithers, W.C. ; Adair, R.K. ; Hawkins, C.B.J. ; et al.
Phys.Rev. 179 (1969) 1304-1314, 1969.
Inspire Record 55504 DOI 10.17182/hepdata.5476

We have measured the Wolfenstein triple-scattering parameters R, D, and A′ at 1.9 GeV for p−p scattering at 90° in the c.m. system. We find that R=0.11±0.16, A′=−0.54±0.16, and D=0.91±0.21, where these parameters are defined in the c.m. system. The possibility of a vector character for the strong inter-actions is discussed. We conclude that neither a single vector-meson exchange nor a single pseudoscalar-meson exchange can account for the data. Spin effects are found to remain an important part of the nucleon-nucleon interaction at four-momentum transfer −t=1.8 (GeV/c)2.

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STRUCTURE OBSERVED IN THE SPIN SPIN CORRELATION PARAMETER C(LL) = (L, L, 0, 0) IN P P ELASTIC SCATTERING AROUND THETA (C.M.) = 90-DEGREES IN THE REGION P(LAB) = 2.5-GEV/C - 5.0-GEV/C

Auer, I.P. ; Chang-Fang, C. ; Colton, E. ; et al.
Phys.Rev.Lett. 48 (1982) 1150-1152, 1982.
Inspire Record 180637 DOI 10.17182/hepdata.20626

The spin-spin correlation parameter CLL=(L, L; 0, 0) has been measured for p−p elastic scattering around θc.m.=90° up to plab=5 GeV/c. An interesting energy dependence is observed in CLL and the results are interpreted by comparison with other available data.

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NUMERICAL VALUES OF DATA IN FIGURE SUPPLIED BY A. YOKOSAWA.


Energy Dependence of the Spin Spin Correlation Parameter C(ll) = (L, L : O, O) in $p p$ Elastic Scattering Around $\theta$ (Center-of-mass) = 90-degrees

Auer, I.P. ; Beretvas, A. ; Colton, E. ; et al.
Phys.Rev.Lett. 41 (1978) 1436, 1978.
Inspire Record 131077 DOI 10.17182/hepdata.20865

We have measured the spin-spin correlation parameter CLL=(L, L;0, 0) in p−p elastic scattering around θc.m.=90° from plab=1.0 to 3.0 GeV/c. We observe a rapid energy dependence in CLL and describe our interpretation of the results.

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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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Anti-p p elastic scattering at 2.85 gev/c

Crawley, H.B. ; Hafen, Elizabeth S. ; Kernan, W.J. ;
Phys.Rev.D 8 (1973) 2012-2015, 1973.
Inspire Record 93404 DOI 10.17182/hepdata.22063

p¯p elastic scattering at an incident beam momentum of 2.85 GeV/c is analyzed using 18 412 events. The simple exponential parametrization of the diffraction peak is found to be a poor representation of the data. Two other parametrizations are tried and the estimates of dσdt at t=0 and of the slope of the diffraction peak are found to differ significantly between various parametrizations. It is found that two coherent interfering exponentials are able to represent the differential cross section over the range 0.04≤|t|≤1.8 (GeV/c)2 with a χ2 probability of approximately 40%.

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