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<div class="elementToProof"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 11pt; color: black; background-color: white;">Dear all, </span></div>
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Tomorrow, at 1pm </span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">EST</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36); background-color: white;">,
we will have a </span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">hybrid</span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0); background-color: white;"> seminar
given by </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Dominik Stamen of Bonn University in CC L102 and</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36); background-color: white;"> </span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">on
the Zoom for Government link: </span></div>
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<div><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"><a href="https://jlab-org.zoomgov.com/j/1603009263?pwd=blNmNVFqM253R1RoZWp4VXRxMXJhUT09" target="_blank" id="OWA5a05bb43-e71e-d259-2f65-26c327ba542f" class="x_OWAAutoLink" rel="noopener noreferrer" style="margin: 0px; background-color: rgb(255, 255, 255); text-align: left;" data-auth="NotApplicable" data-linkindex="0">https://jlab-org.zoomgov.com/j/1603009263?pwd=blNmNVFqM253R1RoZWp4VXRxMXJhUT09</a></span></div>
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<span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: black;">Please see below for the title and abstract. </span></div>
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<span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><b><u>Theory Seminar</u></b>:<b> </b></span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 14.6667px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">March
4<sup>th</sup></span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">, 1pm
</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">EST</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"> (</span><span style="font-family: Calibri, sans-serif; font-size: 14.6667px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">hybrid</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">)</span></p>
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<span style="font-size: 11pt; color: rgb(36, 36, 36);"><b><u><br>
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<span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);"><b><u>Speaker</u></b>:
</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 14.6667px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Dominik Stamen</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);"> (</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 14.6667px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Bonn
University</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);">) </span></p>
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<span style="font-size: 11pt; color: rgb(36, 36, 36);"><b><u><br>
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<span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);"><b><u>Title</u></b>:</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: black;"><b> </b></span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Dispersion-theoretical
methods for three-body decays and Primakoff reactions </span></p>
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<span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);"><b><u>Abstract</u></b>:</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: black;"> </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">In
this talk, I will discuss how dispersion-theoretical methods can be used in three-body decays and Primakoff reactions. Decays into three particles are often described in terms of two-body resonances and a non-interacting spectator particle. To go beyond this
simplest isobar model, crossed-channel rescattering effects need to be accounted for. Inclusion of crossed-channel effects is achieved by solving the Khuri-Treiman integral equations. We quantify the importance of these rescattering effects in three-pion systems
for different decay masses and angular-momentum quantum numbers. Furthermore a dispersion-theoretical analysis of the reaction amplitudes $\gamma K\to K\pi$, based on modern pion-kaon P-wave phase shift input, will be introduced. Thereby providing a model-independent
framework for future analyses of high-precision kaon Primakoff data. Additionally these amplitudes can be used in kaon Compton scattering to extract kaon polarizabilities. </span></p>
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<span style="font-size: 11pt; color: rgb(36, 36, 36);">See you on tomorrow. </span></p>
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<span style="font-size: 11pt; color: rgb(36, 36, 36);">Best regards,<br>
Caroline, Joe & Zheng-Yang<br>
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