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<span class="elementToProof" style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; line-height: 1.5; color: rgb(0, 0, 0);"><span style="font-size:11pt">Dear all, </span></span>
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<span class="ContentPasted2" style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);">Tomorrow, at 1pm EDT, we will have a virtual seminar given by</span><span class="ContentPasted2" style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);"><span class="ContentPasted2"> </span><span data-markjs="true" class="ContentPasted2"></span></span><span data-markjs="true" class="marky2nrg0w1e ContentPasted5" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" style="font-size: 11pt; margin: 0px; background-color: rgb(255, 255, 255);">Jorge</span><span style="font-size: 16px; margin: 0px; display: inline !important; background-color: rgb(255, 255, 255);"><span class="ContentPasted5" style="margin:0px;font-size:11pt"> </span></span><span data-markjs="true" class="mark2izqaf5pm ContentPasted5" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" style="font-size: 11pt; margin: 0px; background-color: rgb(255, 255, 255);">Baeza</span><span style="font-size: 16px; margin: 0px; display: inline !important; background-color: rgb(255, 255, 255);"><span class="ContentPasted5" style="margin:0px;font-size:11pt"> </span></span><span data-markjs="true" class="markr7z3a7k5x ContentPasted5" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" style="font-size: 11pt; margin: 0px; background-color: rgb(255, 255, 255);">Ballesteros</span><span class="ContentPasted5" style="font-size: 16px; margin: 0px; display: inline !important; background-color: rgb(255, 255, 255);"><span class="ContentPasted5" style="margin:0px;font-size:11pt"> </span></span><span class="ContentPasted5" style="font-size: 11pt; margin: 0px; display: inline !important; background-color: rgb(255, 255, 255);">of
University of Valencia</span><span class="ContentPasted2" style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);"><span> </span>on the Zoom for Government link:<span class="ContentPasted2"> </span></span></div>
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</span><a href="https://jlab-org.zoomgov.com/j/1601673451?pwd=M0d0WVFJcXlsUXRKQkdvcWlBRXZiUT09" data-auth="NotApplicable" title="https://jlab-org.zoomgov.com/j/1601673451?pwd=M0d0WVFJcXlsUXRKQkdvcWlBRXZiUT09" data-linkindex="0" id="OWAa98f99e7-9b02-aee1-f6fe-d36381759359" class="OWAAutoLink ContentPasted0" data-outlook-id="dfd5473f-5266-46ba-87ab-ac8d2e8e5897" style="font-size: 14.6667px; font-family: Calibri, sans-serif; margin: 0px; line-height: 1.5; color: rgb(0, 120, 212); background-color: rgb(255, 255, 255);"><span style="font-size:11pt;margin:0px">https://jlab-org.zoomgov.com/j/1601673451?pwd=M0d0WVFJcXlsUXRKQkdvcWlBRXZiUT09</span></a></div>
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<span style="font-size:11pt;line-height:1.5">Please see below for the title and abstract. </span></div>
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<b><span class="x_x_ContentPasted0" style="text-decoration-line: underline; font-size: 12pt; margin: 0px; color: black;"><span data-markjs="true" class="x_markpmr40sqz6 ContentPasted6" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" style="font-size:11pt;margin:0px">Theory</span></span><span class="x_x_ContentPasted0" style="text-decoration-line: underline; margin: 0px; color: black;"><span class="ContentPasted6"> </span></span><span class="x_x_ContentPasted0" style="text-decoration-line: underline; font-size: 12pt; margin: 0px; color: black;"><span data-markjs="true" class="x_markrd67w8byk ContentPasted6" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" style="font-size:11pt;margin:0px">Seminar</span></span><span class="x_x_ContentPasted0 ContentPasted6" style="margin: 0px; color: black;"><u>:</u> </span></b><span class="x_x_ContentPasted0 ContentPasted6" style="color: black;">Monday
September 11</span><span style="color: black;"><sup class="x_x_ContentPasted0 ContentPasted6">th</sup></span><span class="x_x_ContentPasted0 ContentPasted6" style="color: black;">, 1pm EDT (virtual)</span></p>
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<b><u><span class="ContentPasted4" style="font-size:11pt">Speaker</span></u></b><span class="ContentPasted4" style="font-size:11pt">:<span class="ContentPasted4"> </span><span data-markjs="true" class="ContentPasted4"></span><span data-markjs="true" class="marky2nrg0w1e ContentPasted5" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Jorge</span><span style="font-size: 16px; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; display: inline !important; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"><span class="ContentPasted5" style="font-size:11pt;margin:0px"> </span></span><span data-markjs="true" class="mark2izqaf5pm ContentPasted5" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Baeza</span><span style="font-size: 16px; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; display: inline !important; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"><span class="ContentPasted5" style="font-size:11pt;margin:0px"> </span></span><span data-markjs="true" class="markr7z3a7k5x ContentPasted5" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Ballesteros</span><span data-markjs="true" class="ContentPasted4"></span><span class="ContentPasted4"> </span>(<span style="display: inline !important; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">University
of Valencia</span>) </span></p>
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<b style="font-size:11pt"><span class="ContentPasted1" style="color: black;"><b style="font-size: 13.3333px; color: rgb(36, 36, 36);"><u><span style="font-size:11pt"><br>
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<b style="font-size:11pt"><span class="ContentPasted1" style="color: black;"><b style="font-size: 13.3333px; color: rgb(36, 36, 36);"><u><span style="font-size:11pt">Title</span></u></b><span style="font-weight: 400; color: rgb(36, 36, 36);">:</span></span><span class="ContentPasted1" style="font-size: 12pt; color: black;"><span class="ContentPasted1" style="font-size:11pt"> </span></span></b><span class="ContentPasted1" style="font-size: 11pt; color: black;">Meson-meson
scattering at large Nc </span></p>
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<b><span class="ContentPasted1" style="color: black;"><b style="font-size: 13.3333px; color: rgb(36, 36, 36);"><u><span style="font-size:11pt"><br>
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<b><span class="ContentPasted1" style="color: black;"><b style="font-size: 13.3333px; color: rgb(36, 36, 36);"><u><span style="font-size:11pt">Abstract</span></u></b><span style="font-weight: 400; color: rgb(36, 36, 36);">:</span></span></b><span class="ContentPasted1" style="font-size: 12pt; color: black;"><span class="ContentPasted1" style="font-size:11pt"> </span></span><span class="ContentPasted1" style="color: black;">The
large Nc limit of QCD is a simplification of the theory of strong interactions that keeps most of its non-perturbative features and has been used by many phenomenological approaches to QCD. However, subleading Nc effects are hard to estimate and may lead to
predictions very different from experimental observations. In this talk, I will discuss how lattice QCD can be used to study these subleading effects and, in particular, how we are using it to analyze the Nc scaling of meson-meson scattering in a theory with
Nf=4 degenerate quark flavors. I will first present some results on pion-pion scattering near threshold for Nc=3-6, and how they allow to constrain the Nc dependence of different low energy constants from chiral perturbation theory. Later, I will discuss ongoing
work that extends the previous study to higher energies, with the main goal of analyzing possible tetraquark states appearing in one channel that is unique to the Nf=4 theory.</span></p>
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<span class="ContentPasted3" style="font-size:11pt;margin:0px">See you on tomorrow!</span></p>
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<span class="ContentPasted3" style="font-size:11pt;margin:0px">Best regards, </span></p>
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<span class="ContentPasted3" style="font-size:11pt;margin:0px">Caroline, Joe, and Zheng-Yang</span></p>
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