[Theory-seminars] Farewell and theory seminar (starting at 12:30pm)

[Miguel Albaladejo]

Dear all,

this is a reminder on tomorrow's Raza and Tianbo farewell meeting (12:30pm) and theory seminar (1:00pm).

Best regards,
Astrid, Christos, Filippo, Miguel

Bluejeans connection: https://bluejeans.com/801786278<https://urldefense.proofpoint.com/v2/url?u=https-3A__bluejeans.com_801786278&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=AIMSQQ81YDyrZuJNGks2qw&m=aT_3J5jjiFmHtFXffqbfPqEY_A73NEWw2ebyFyL_eCA&s=YNm3qgT5e8sJgKfZ9vFA_w--imuXwmeAjg0C4AslLwg&e=>

Theory seminar information:

Date and time: Monday September 14, 1:00pm
Speaker: Glòria Montaña (University of Barcelona)
Title: "Thermal modification of open-charm mesons from an effective hadronic theory".

Abstract: The high-temperature and vanishing baryon density regime of the QCD phase diagram, where the quark-gluon plasma (QGP) is expected to be produced, is explored experimentally with heavy-ion collisions at RHIC and LHC. Due to the large mass and relaxation time of the c quark, charmed mesons are a powerful probe of the QGP and a proper theoretical understanding of their propagation in a hot medium is required. While lattice QCD is becoming an increasingly important tool in this regime, we employ a complementary theoretical approach that allows one to reach the QGP transition from the hadron phase. In particular, we study the modification of open-charm mesons in a hot mesonic medium below Tc within an effective field theory based on chiral and heavy-quark spin-flavor symmetries within the imaginary-time formalism. The in-medium unitarized amplitudes of the scattering of the heavy mesons with the pseudoscalar light mesons and the ground-state self-energies are calculated self-consistently. We show that the D(∗) and Ds(∗) mesons acquire a substantial width and their masses drop with increasing temperatures. This also implies the thermal modification of the excited mesonic states generated dynamically in our heavy-light molecular model, namely the nonstrange D0*(2300) and D1*(2430) mesons, as well as the Ds0*(2317) and Ds1*(2460) resonances. From the thermal ground-state spectral functions we have computed for the first time open-charm Euclidean correlators that can be compared with those obtained with lattice QCD. For temperatures well below Tc we obtain a similar behavior to that found in the lattice, upon the inclusion of the full-energy dependent spectral functions in the calculation of the Euclidean correlators.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/theory-seminars/attachments/20200913/fe61e126/attachment.html>