Characteristics of Charm Production by 400-GeV Protons
1986; American Physical Society; Volume: 57; Issue: 13 Linguagem: Inglês
10.1103/physrevlett.57.1522
ISSN1092-0145
AutoresM. E. Duffy, G. K. Fanourakis, Richard Loveless, D. D. Reeder, E. S. Smith, S. Childress, C. Castoldi, G. Conforto, R.C. Ball, C. T. Coffin, H.R. Gustafson, Lyndon Jones, M. J. Longo, Thomas J. Roberts, B.P. Roe, Emily Wang, M. B. Crisler, J. S. Hoftun, T. Y. Ling, T. A. Romanowski, J. Volk,
Tópico(s)Particle Detector Development and Performance
ResumoIn a beam-dump experiment at Fermilab the cross section for charm-particle production has been deduced from a measurement of the prompt neutrino flux. The reaction cross section, if we assume only $D\overline{D}$ and the dependence on atomic weight ${A}^{0.75}$, is 57.2 \ifmmode\pm\else\textpm\fi{} 2.9 \ifmmode\pm\else\textpm\fi{} 8.5 \ensuremath{\mu}b/nucleon and the dependence on Feynman $x$ and transverse momentum is $\frac{{E}_{D}{d}^{3}\ensuremath{\sigma}}{d{p}_{D}^{3}}\ensuremath{\propto}{(1\ensuremath{-}x)}^{3.2}{e}^{\ensuremath{-}1.5{p}_{\ensuremath{\perp}}}$ (${p}_{\ensuremath{\perp}}$ in GeV/c). The data are consistent with as much as 40% diffractive production of ${\ensuremath{\Lambda}}_{c}\overline{D}$.
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