Theory Seminar - De-Liang Yao

  • Theory Seminar - De-Liang Yao
    https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09
    Remote
    2022-01-24EST9:00:00 ~ 2022-01-24EST10:00:00
    16397
Not all computers/devices will add this event to your calendar automatically. A calendar event file named "jlab-calendar.ics" will be placed in your downloads location. Depending on how your device/computer is configured, you may have to locate this file and double click on it to add the event to your calendar. Event dates, times, and locations are subject to change. Event details will not be updated automatically once you add this event to your own calendar. It is recommended that you confirm details prior to the event by visiting The live JLab Event Calendar. If you need assistance contact helpdesk@jlab.org

We kindly ask all attendees to provide their full name on Zoom for government when entering the event.

Speaker: De-Liang Yao

Title: Dispersive analysis of the scalar form factors in semileptonic decays

Abstract: The form factors in the semileptonic decays of heavy B/D meson decays can be represented by dispersion relations, which build an elegant bridge to communicate dynamical information from scattering regions. By fitting to the lattice QCD data on the form factors, the subtraction constants in the dispersive representations can be determined such that the form factors in the whole kinematical region are established. As byproducts, Cabibbo–Kobayashi–Maskawa elements can also be extracted with form-factor values at $q^2=0$. In this talk, I will first present a study of heavy-to-light scalar form factors with Muskhelishvili–Omnès dispersion relations, and then introduce a new parametrization of the form factors in $\bar{B}\to D\ell^-\bar{\nu}_\ell$ decays.


Event Date
-
Location
Remote
Category
Scientific Program
Seminars
Contact Name
Patrick Barry
Phone
(708) 612-0198