[Theory-seminars] Joint Physics/Theory seminar TODAY - Abhishek Mohapatra (11:00, Auditorium)

[Gloria Montana-Faiget]

Dear all,

Today at 11:00AM EDT, we will have a joint physics/theory hybrid seminar given by Abhishek Mohapatra from the Technical University of Munich, in person in CC Auditorium and on the following Zoom link:

https://jlab-org.zoomgov.com/j/1615256898?pwd=NwqZyf1RL8I8ppEQQBPXo8acHZkMEU.1

Please see below for the title and abstract.

Theory Seminar: April 11th, 11am EDT (hybrid, CC Auditorium)

Speaker: Abhishek Mohapatra (TUM)

Title: One Born-Oppenheimer Effective Theory to rule all multiquark states


Abstract: 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.

See you all there!

Best regards,

Joe, Zheng-Yang, Gloria and Adam

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