Cross-section measurement for quasi-elastic production of charmed baryons in nu N interactions


Kayis-Topaksu A. , Onengut G., van Dantzig R., de Jong M., Melzer O., Oldeman R., ...More

PHYSICS LETTERS B, vol.575, pp.198-207, 2003 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 575
  • Publication Date: 2003
  • Doi Number: 10.1016/j.physletb.2003.09.056
  • Title of Journal : PHYSICS LETTERS B
  • Page Numbers: pp.198-207

Abstract

A study of quasi-elastic production of charmed baryons in charged-current interactions of neutrinos with the nuclear emulsion target of CHORUS is presented. In a sample of about 46000 interactions located in the emulsion, candidates for decays of short-lived particles were identified by using new automatic scanning systems and later confirmed through visual inspection. Criteria based both on the topological and kinematical characteristics of quasi-elastic charm production allowed a clear separation between events of this type and those in which charm is produced in deep inelastic processes. A final sample containing 13 candidates consistent with quasi-elastic production of a charmed baryon with an estimated background of 1.7 events was obtained. At the average neutrino energy of 27 GeV the cross-section for the total quasi-elastic production of charmed baryons relative to the vN charged-current cross-section was measured to be sigma(QE)/sigma(CC) = (0.23(-0.06)(+0.12)(stat)(-0.03)(+0.02)(syst)) x 10(-2).