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Dear all, </div>
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<span style="font-size: 11pt; color: black;"><b>Tomorrow</b>,</span><span style="font-size: 14.67px; color: black;"> </span><span style="font-size: 11pt; color: rgb(0, 0, 0); background-color: white;"><b>April 11</b></span><span style="font-size: 14.67px; color: black;"><b><sup>th</sup></b>, 2025 at
<b>11:00AM</b> EDT, </span><span style="font-size: 11pt; color: black;">we will have a
<b>joint physics/theory hybrid seminar</b> given by </span><span style="font-size: 11pt; color: rgb(0, 0, 0); background-color: white;">Abhishek Mohapatra from the Technical University of Munich, in person in
<b>CC Auditorium</b> and</span><span style="font-size: 11pt; color: black;"> on the following Zoom link: </span></div>
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<span style="background-color: rgb(255, 255, 255);"><a href="https://jlab-org.zoomgov.com/j/1615256898?pwd=NwqZyf1RL8I8ppEQQBPXo8acHZkMEU.1" id="LPlnkOWAf461b23c-e723-503e-547d-241067e7694d" class="OWAAutoLink" title="https://jlab-org.zoomgov.com/j/1615256898?pwd=NwqZyf1RL8I8ppEQQBPXo8acHZkMEU.1" data-auth="NotApplicable" data-linkindex="0" data-olk-copy-source="MessageBody" style="margin: 0px; background-color: rgb(255, 255, 255); text-align: left;">https://jlab-org.zoomgov.com/j/1615256898?pwd=NwqZyf1RL8I8ppEQQBPXo8acHZkMEU.1</a></span></div>
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Please see below for the title and abstract. </div>
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<span style="color: black;"><b><u>Theory Seminar</u></b>:<b> </b></span><span style="color: rgb(0, 0, 0); background-color: white;">April 11</span><span style="color: black;"><sup>th</sup>, 11am EDT (hybrid, CC Auditorium) </span></div>
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<b><u>Speaker</u></b>: Abhishek Mohapatra (TUM)</div>
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<b><u>Title</u></b>:<b> </b><span style="background-color: white;">One Born-Oppenheimer Effective Theory to rule all multiquark states </span></div>
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<span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: black;"><b><u>Abstract</u></b>: The discovery of XYZ exotic states in the hadronic sector, particularly those containing two heavy quarks, remains one of the most intriguing open
problems in particle physics. In this talk, I present the Born-Oppenheimer Effective Field Theory (BOEFT), a framework derived from QCD, capable of describing exotic hadrons of any composition. I discuss the general Schrödinger coupled equations governing
arbitrary angular momentum of light degrees of freedom, capturing the dynamics of hybrids, tetraquarks, pentaquarks, doubly heavy baryons, and quarkonia at leading order—including nonadiabatic effects. I also explore the predicted multiplet structures, selection
rules, and key nonperturbative gauge-invariant correlators—such as static energies, generalized Wilson loops, gluelumps, and adjoint mesons—which serve as essential lattice QCD inputs for BOEFT. Moreover, I show for the first time new results on the behavior
of static energies at short distances and mixing with the threshold at long distances based on BOEFT. As an application, I show results for the hybrid spectrum, hybrid decays to quarkonium, results for X(3872) and T_cc (3875), and preliminary results on pentaquark
states. </span></p>
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See you tomorrow. </div>
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Best regards, </div>
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Joe, Zheng-Yang, Gloria and Adam</div>
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