1 Ocak 2008 Dergi makalesi Açık Erişim

Vazquez-Jauregui, E.; Engelfried, J.; Akgun, U.; Alkhazov, G.; Amaro-Reyes, J.; Atamantchouk, A. G.; Ayan, A. S.; Balatz, M. Y.; Blanco-Covarrubias, A.; Bondar, N. F.; Cooper, P. S.; Dauwe, L. J.; Davidenko, G. V.; Dersch, U.; Dolgolenko, A. G.; Dzyubenko, G. B.; Edelstein, R.; Emediato, L.; Endler, A. M. F.; Eschrich, I.; Eschrich, I.

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{
  "DOI": "10.1016/j.physletb.2008.07.072", 
  "abstract": "We report the first observation of two Cabibbo-suppressed ecay modes, Xi(+)(c) -> Sigma(+)pi(-)pi(+) and Xi c+ -> Sigma(-)pi(+)pi(+). We observe 59 +/- 14 over a background of 87, and 22 +/- 8 over a background of 13 events, respectively, for the signals. The data were accumulated using the SELEX spectrometer during the 1996-1997 fixed target run at Fermilab, chiefly from a 600 Gev/c Sigma(-) beam. The branching ratios of the decays relative to the Cabibbo-favored Xi c+ -> Xi(-)pi(+)pi(+) are measured to be B(Xi(+)(c) -> Sigma(+)pi(-)pi(+))/B(Xi(+)(c) -> Xi(-)pi(+)pi(+)) = 0.48 +/- 0.20, and B(Xi(+)(c) -> Sigma(-)pi(+)pi(+))/B(Xi(+)(c) -> Sigma(-)pi(+)pi(+)) = 0.18 +/- 0.09, respectively. We also report branching ratios for the same decay modes of the Delta(+)(c) relative to Delta(+)(c) -> pK(-)pi(+.) (C) 2008 Elsevier B.V. All rights reserved.", 
  "author": [
    {
      "family": "Vazquez-Jauregui", 
      "given": " E."
    }, 
    {
      "family": "Engelfried", 
      "given": " J."
    }, 
    {
      "family": "Akgun", 
      "given": " U."
    }, 
    {
      "family": "Alkhazov", 
      "given": " G."
    }, 
    {
      "family": "Amaro-Reyes", 
      "given": " J."
    }, 
    {
      "family": "Atamantchouk", 
      "given": " A. G."
    }, 
    {
      "family": "Ayan", 
      "given": " A. S."
    }, 
    {
      "family": "Balatz", 
      "given": " M. Y."
    }, 
    {
      "family": "Blanco-Covarrubias", 
      "given": " A."
    }, 
    {
      "family": "Bondar", 
      "given": " N. F."
    }, 
    {
      "family": "Cooper", 
      "given": " P. S."
    }, 
    {
      "family": "Dauwe", 
      "given": " L. J."
    }, 
    {
      "family": "Davidenko", 
      "given": " G. V."
    }, 
    {
      "family": "Dersch", 
      "given": " U."
    }, 
    {
      "family": "Dolgolenko", 
      "given": " A. G."
    }, 
    {
      "family": "Dzyubenko", 
      "given": " G. B."
    }, 
    {
      "family": "Edelstein", 
      "given": " R."
    }, 
    {
      "family": "Emediato", 
      "given": " L."
    }, 
    {
      "family": "Endler", 
      "given": " A. M. F."
    }, 
    {
      "family": "Eschrich", 
      "given": " I."
    }, 
    {
      "family": "Eschrich", 
      "given": " I."
    }
  ], 
  "container_title": "PHYSICS LETTERS B", 
  "id": "37887", 
  "issue": "4", 
  "issued": {
    "date-parts": [
      [
        2008, 
        1, 
        1
      ]
    ]
  }, 
  "page": "299-304", 
  "title": "First observation of the Cabibbo-suppressed decays Xi(+)(c)->Sigma(+)pi(-)pi(+) and Xi(+)(c)->Sigma(-)pi(+)pi(+) and measurement of their branching ratios", 
  "type": "article-journal", 
  "volume": "666"
}