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

Physics NotePublished

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

Authors: J. dos Anjos; G. Herrera; J. Magnin; Fernando Raimundo Aranha Simão
Type: Physics Note
Status: Published
Publication date: 1997
Description: 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.
Year: 1997
Number: CBPF-NF-011/97
Linked to a thesis: No
Linked to a grant: No