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Dear all,<br class="">
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Tomorrow we will have a theory seminar, please see below for details:<br class="">
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Bluejeans connection: <a href="https://bluejeans.com/801786278" class="">https://bluejeans.com/801786278</a><br class="">
Date and time: Monday June 21, 2021, 1:00PM EDT<br class="">
Speaker: Jaume Tarrús Castellà (Universitat Autònoma de Barcelona)<br class="">
Title: Exotic Quarkonia in Effective field theory<br class="">
Abstract: Since the early days of QCD the existence of hadrons beyond the quark model baryons and mesons has been foreseen.<br class="">
These states have now been unambiguously observed in the quarkonium spectrum close and above open flavor thresholds <br class="">
and are usually referred to as exotic quarkonium. A large variety of models have been put forward to explain these states <br class="">
but no model has been able to provide a unified description of all the exotic quarkonium states. Furthermore these models have no clear connection to QCD. <br class="">
As in standard quarkonium, effective field theories can be used to relate the phenomenological descriptions to QCD. <br class="">
In this talk I will present the development of such an effective field theory framework that, together with lattice QCD inputs, <br class="">
can be used to describe all the exotic quarkonium states and can also be extended to other double heavy hadrons regardless if they are exotic. <br class="">
Afterwards I will review the application of this EFT framework to the hybrid quarkonium spectrum including hyperfine contributions <br class="">
and to the study of hybrid to standard quarkonium transitions.<br class="">
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The recording archives of our seminars can be found here:<br class="">
<a href="https://www.jlab.org/theory/seminars/2021seminars" class="">https://www.jlab.org/theory/seminars/2021seminars</a><br class="">
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In order to easier recognize the person speaking at a given time during the seminar, we would like to kindly ask each participant to enter their full name when logging on to the meeting.<br class="">
Thanks, and see you all there!<br class="">
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Best regards,<br class="">
Astrid, Christos, Filippo
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