<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)">Hello All,</span>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)"><br>
</div>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)">Tomorrow, 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" target="_blank" rel="noopener noreferrer" data-auth="NotApplicable" data-linkindex="0">
https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09</a><br>
</div>
<div class="x__Entity x__EType_OWALinkPreview x__EId_OWALinkPreview x__EReadonly_1">
</div>
<br>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)"><span style="font-family:Calibri,Helvetica,sans-serif">Please see below for the title and abstract of De-Liang's talk.</span><br>
</div>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)"><br>
</div>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)"><span style="font-family:Calibri,Helvetica,sans-serif"><u>Theory Seminar</u></span></div>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)"><span style="font-family:Calibri,Helvetica,sans-serif">Monday, January 24th at
</span><span style="background-color:rgb(255,0,0);font-family:Calibri,Helvetica,sans-serif">9:00AM</span></div>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)"><br>
</div>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)"><span style="font-family:Calibri,Helvetica,sans-serif"><u>De-Liang Yao</u></span><span style="font-family:Calibri,Helvetica,sans-serif"> (Hunan University) will speak about "</span><span style="font-family:Calibri,Helvetica,sans-serif">Dispersive
analysis of the scalar form factors in semileptonic decays</span><span style="font-family:Calibri,Helvetica,sans-serif">"</span></div>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)"><br>
</div>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)"><span style="font-family:Calibri,Helvetica,sans-serif"><u>Abstract</u></span><span style="font-family:Calibri,Helvetica,sans-serif">:</span><br>
</div>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)"><span></span><span><span style="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>
</span></div>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)"><br>
</div>
<div style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)"><span style="font-family:Calibri,Helvetica,sans-serif">See you tomorrow!<br>
</span></div>
<span style="font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255)">Caroline, Colin, & Patrick</span><br>
</div>
</body>
</html>