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<span>Dear all,<br>
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<span style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: medium; background-color: rgb(255, 255, 255); display: inline !important">Here is a reminder for</span><span style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: medium; background-color: rgb(255, 255, 255)"> the
theory seminar</span><span style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: medium; background-color: rgb(255, 255, 255)"> </span><span style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: medium; background-color: rgb(255, 255, 255)"><span><span>next</span></span></span><span style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: medium; background-color: rgb(255, 255, 255)"> </span><span style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: medium; background-color: rgb(255, 255, 255)"><span>week</span></span><span style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: medium; background-color: rgb(255, 255, 255); display: inline !important">:</span><br>
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<font size="3"><span style="margin: 0px; font-size: 12pt"><u><b><br>
Theory seminar:</b></u></span><br>
<span style="margin: 0px; font-size: 12pt">Monday, Sep 23, 1:00PM, Room L102</span></font></div>
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<span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important">Mikhail Voloshin (Minnesota U.)</span>, "Trying to understand the XYZ ... Pc</span><span>"</span></div>
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<span style="font-size: 12pt;"><u>Abstract:</u></span></div>
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<div>I discuss the charmonium-like exotic so-called mesonic XYZ states and the pentaquarks $P_c$. A number of these states have been found recently at electron-positron colliders and at LHC indicating existence of a rich spectrum of new hadronic systems. The
`internal dynamics' is likely different in different exotic resonances, with some being possibly advantageous for studies in $\gamma p$, $\bar p p$ (and also $\bar p n$) collisions. I summarize the current expectations for such studies and their possible implications
for understanding the new multiquark structures.<br>
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<span style="color: rgb(0, 0, 0);">Bluej</span><span style="font-size: medium; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif;">eans connection: </span><span style="font-size: medium; color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif;"><a href="https://bluejeans.com/610445877" target="_blank" style="color: rgb(17, 85, 204);"><span style="color: rgb(12, 100, 192);">https://bluejeans.com/610445877</span><wbr></a></span><span style="font-size: medium; color: rgb(12, 100, 192); font-family: Arial, Helvetica, sans-serif;"> </span></div>
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<pre cols="72" style="white-space:pre-wrap">--</pre>
<pre cols="72" style="white-space:pre-wrap">Raza, Miguel, Carlota</pre>
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