Elastic pi+ p, K+ p and p p Scattering in the Region of Coulomb-Nuclear Interference at Momenta 42.5-GeV/c and 52.2-GeV/c

Apokin, V.D. ; Vasiliev, A.N. ; Derevshchikov, A.A. ; et al.
Yad.Fiz. 25 (1977) 94-102, 1977.
Inspire Record 108613 DOI 10.17182/hepdata.19035

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18 data tables

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Study of the charge exchange reaction pi-minus + p ---> pi-neutral + n with the pi-neutral meson backward emission at 1.55-3.8 gev/c

Antipolsky, V.D. ; Bayatyan, G.L. ; Brakhman, E.V. ; et al.
Yad.Fiz. 9 (1969) 1021-1024, 1969.
Inspire Record 56935 DOI 10.17182/hepdata.40403

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9 data tables

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Charm $D$ Meson Production in 360-{GeV} $\pi^- p$ Interactions: Evidence for Leading Quarks

The LEBC-EHS collaboration Aguilar-Benitez, M. ; Allison, W.W.M. ; Bagnaia, P. ; et al.
Phys.Lett.B 123 (1983) 98-102, 1983.
Inspire Record 182456 DOI 10.17182/hepdata.30715

Charm D-meson production in 360 GeV π − p interactions has been studied using the high-resolution hydrogen bubble chamber LEBC and the European Hybrid Spectrometer. The data show evidence for leading quark effects both in the number of D-meson types and in the Feynman x distributions. The production cross section is of the form d 2 δ d x d p T 2 ∞(1-x) n exp (-ap T 2 ) with n = 2.8±0.8 and a = 1.1±0.3 (GeV/ c ) −2 . The x distribution is, however, compatible with the presence of both central ( n = 6) and leading (n = 1) D / D production. The fraction of D-messons in the leading component is estimated to be ≈30%. The rapidity gap between members of reconstructed charm pairs is small compared to the available rapidity range. The inclusive cross section for single D-messons in the forward direction is: δ(D/ D )=(40 8 +15 )μ b ( for x>0) .

1 data table

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