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An Estimate Of the Branching Fraction Of Tau -> Pi Eta 'Nu(Tau)

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اقرأ أكثر حفظ في قائمتي
  • المؤلفون: Nussinov, Shmuel; Soffer, A.
  • المصدر:
    Mathematics, Physics, and Computer Science Faculty Articles and Research
  • نوع التسجيلة:
    Electronic Resource
  • معلومة اضافية
    • Publisher Information:
      Chapman University Digital Commons 2009-01-01T08:00:00Z
    • نبذة مختصرة :
      We calculate the expected branching fraction of the second-class-current decay tau -> pi eta 'nu(tau), motivated by a recent experimental upper-limit determination of this quantity. The largest contribution to the branching fraction is due to the intermediate a(0)(980) scalar meson, assuming it is a (u) over bard state. Smaller contributions arise from a(0)(1450), rho(770), and rho(1450). Our calculated values are substantially below the experimental upper limit, and are smaller still if the a(0)(980) is a four-quark state, as often suggested. Thus, a precise measurement or tight upper limit has the potential to determine the nature of the a(0)(980), as well as provide information about new scalar interactions.
    • الموضوع:
      Decay; Mesons; Quantum Physics; text
    • Availability:
      Open access content. Open access content
      American Physical Society
    • Note:
      application/pdf
    • Other Numbers:
      CCX oai:digitalcommons.chapman.edu:scs_articles-1280
      https://digitalcommons.chapman.edu/scs_articles/288
      https://digitalcommons.chapman.edu/cgi/viewcontent.cgi?article=1280&context=scs_articles
      908658403
    • Contributing Source:
      CHAPMAN UNIV
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.ocn908658403
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