NT/RBRC seminar

"Meson-meson scattering at large Nc"

Presented by Jorge Baeza Ballesteros, IFIC

Friday, September 22, 2023, 11:00 am — Large Seminar Room, Bldg. 510

Abstract: 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.

Hosted by: Andrew Hanlon

Join Videoconference More Information

19333  |  INT/EXT  |  Events Calendar


Not all computers/devices will add this event to your calendar automatically.

A calendar event file named "calendar.ics" will be placed in your downloads location. Depending on how your device/computer is configured, you may have to locate this file and double click on it to add the event to your calendar.

Event dates, times, and locations are subject to change. Event details will not be updated automatically once you add this event to your own calendar. Check the Lab's Events Calendar to ensure that you have the latest event information.