Production and Polarization of the <math>Λ c+</math> and the charm of the Proton

Nota de FísicaPublicado

Production and Polarization of the $<math>\Lambda _c^{+}</math>$ and the charm of the Proton

J. dos Anjos; G. Herrera; J. Magnin; Fernando Raimundo Aranha Simão

1997

Autores: J. dos Anjos; G. Herrera; J. Magnin; Fernando Raimundo Aranha Simão
Tipo: Nota de Física
Status: Publicado
Data de publicação: 1997
Descrição: We propose a two-component model involving the parton fusion mechanism and recombination of a ''ud'' valence diquark with a sea ''c''-quark of the incident proton to describe <math>\Lambda_c^+\,\!</math> inclusive production in ''pp'' collisions. We also study the polarization of the produced <math>\Lambda_c^+\,\!</math> in the framework of the Thomas Precession Model for polarization. We show that a measurement of the <math>\Lambda_c\,\!</math> polarization is a sensitive test of its production mechanism. In particular the intrinsic charm model predicts a positive polarization for the <math>\Lambda_c\,\!</math> within the framework of the Thomas Precession Model, while according to the model presented here the <math>\Lambda_c\,\!</math> polarization should be negative. The measurement of the <math>\Lambda_c\,\!</math> polarization provides a close examination of intrinsic charm Fock states in the proton and give interesting information about the hadroproduction of charm.
Ano: 1997
Número: CBPF-NF-011/97
Vínculo com tese: Não
Vínculo com bolsa: Não