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SUMMARY:Effect of $K^*$ meson magnetic dipole moment on the $e^+e^- \\to K
 ^+ K^-\\pi^0 \\pi^0 $ cross section
DTSTART;VALUE=DATE-TIME:20261022T203000Z
DTEND;VALUE=DATE-TIME:20261022T204000Z
DTSTAMP;VALUE=DATE-TIME:20261103T191957Z
UID:indico-contribution-27@cern.ch
DESCRIPTION:Speakers: Mr. JIMÉNEZ PÉREZ\, Luis Alberto (Instituto de Fí
 sica)\nWe explore the sensitivity of the $e^{+} e^{-} \\to K^+ K^- 2 \\pi^
 0$ cross section to the magnetic dipole moment (MDM) of the $K^*$ vector m
 eson. We describe the $\\gamma^* \\to 2K2\\pi$ vertex using a vector meson
  dominance model\, including the intermediate resonant contributions relev
 ant for energies below 2.4 GeV. Using BaBar data for this process\, we sho
 w that this observable is indeed sensitive to the MDM of the $K^*$\; we ob
 tain a central value for the MDM of $\\mu_{K^*}=4.5$ and an upper bound of
  $\\bar{\\mu}_{K^*} =  6.3$\, in units of $e/2 m_{K^*}$. We emphasize the 
 need for higher precision data to provide a first data-driven determinatio
 n of this parameter to confront it with theoretical predictions.\n\nhttps:
 //indico.nucleares.unam.mx/event/2675/session/3/contribution/27
LOCATION:Puebla
URL:https://indico.nucleares.unam.mx/event/2675/session/3/contribution/27
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