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<span style="font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Hello All,</span>
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This coming Monday, January 24th at 9:00AM (EST) we will resume our (virtual) theory seminar series. To kick off the new year of scientific exchange, De-Liang Yao of Hunan University will give a (virtual) seminar on:
<a href="https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09" id="LPNoLPOWALinkPreview">
https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09</a><br>
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<span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">Please see below for the title and abstract of De-Liang's talk.</span><br>
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<span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;"><u>Theory Seminar</u></span></div>
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<span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">Monday, January 24th at
</span><span style="background-color: rgb(255, 0, 0); font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">9:00AM</span></div>
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<span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;"><u>De-Liang Yao</u></span><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;"> (Hunan University) will speak about "</span><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">Dispersive
analysis of the scalar form factors in semileptonic decays</span><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">"</span></div>
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<span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;"><u>Abstract</u></span><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">:</span><br>
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<span></span><span><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">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.</span><br>
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<span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">Have a pleasant weekend!</span></div>
<span style="font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Caroline, Colin, & Patrick</span><br>
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