[SEMINARI]: Dr. Schilcher: CHANGE OF DATE

[Arcadi Santamaria]

The seminar by Dr. Schilcher has been re-scheduled to
TUESDAY 3 OF OCTOBER OF 2000 AT 12
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                              S E M I N A R I

             [Image]   Departament de Física Teòrica    [Image]
                          Universitat de València
                       Institut de Física Corpuscular
                       Universitat de València - CSIC

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                     Chiral Sum Rules and their Phenomenology

                               Karl Schilcher

                  (Institut fur Physik. Universitat Mainz)

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                     Aula de Seminaris de Física Teòrica
                 Tuesday 03 of October of 2000 at 12:00 PM
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                                    Resum

    A set of well known chiral sum rules, expected to be valid in QCD is
confronted with data from the ALEPH detector. The Das-Mathur-Okubo sum rule,
  the first and second Weinberg sum rule and the Glashow-Schnitzer-Weinberg
 sum rule are not well saturated by the data. Instead a modified set of sum
   rules with suitable weight factors is proposed and motivated, which is
   saturated precociously to a remarkable extend. A new explanation of the
          Delta(I)=1/2 rule is obtained from the chiral sum rules.

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