$\bf D^{\pm}$ and $\bf D^0(\bar{D}^0)$ production asymmetries in $\bf \pi p$ collisions

E. Cuautle; G. Herrera; J. Magnin

doi:doi:10.1007/s100529800841

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b
c
d
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2023 Impact factor 4.2

Particles and Fields

Eur. Phys. J. C 2, 473-476
DOI 10.1007/s100529800841

$\bf D^{\pm}$ and $\bf D^0(\bar{D}^0)$ production asymmetries in $\bf \pi p$ collisions

E. Cuautle¹ - G. Herrera¹, J. Magnin²

¹ Centro de Investigación y de Estudios Avanzados, Apdo. Postal 14 740, México 07000, D.F (e-mail: cuautle@fis.cinvestav.mx, gherrera@fis.cinvestav.mx)
² Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud 150, 22290-180, Rio de Janeiro, Brazil (e-mail: jmagnin@lafex.cbpf.br)

Received: 23 October 1997 / Published online: 10 March 1998

Abstract
We use a two-component model to describe the production mechanism of D mesons in $\pi p$ collisions. The model combines the usual QCD processes plus fragmentation and recombination of charm that has been produced by nonperturbative QCD mechanisms. A hard charm component in the pion must be responsible of the particle anti-particle production asymmetries observed.

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$\bf D^{\pm}$ and $\bf D^0(\bar{D}^0)$ production asymmetries in $\bf \pi p$ collisions