Banca de DEFESA: HILDESON PAULO LESSA VIEIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : HILDESON PAULO LESSA VIEIRA
DATA : 05/12/2019
HORA: 14:00
LOCAL: Instituto de Física da Universidade Federal da Bahia
TÍTULO:

The interaction of bottomonium with a hadronic medium

PALAVRAS-CHAVES:

Meson-meson interactions, chiral perturbation theory, mesons
consisting of quark b.

PÁGINAS: 99
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Física
RESUMO:

Heavy mesons play an important role in understanding strongly interacting matter. Quarkonia (such as charmonia and bottomonia) that survived the plasma phase of quarks and gluons are expected to collide with other particles that make up hadronic matter. In this paper, we present a study on the interactions of the Upsilon meson with a hadronic medium. The meson-meson interactions are described by an effective lagrangian that is based on a theory of chiral perturbation extended to SU (4) symmetry, which gives the amplitudes of unitarized coupled channels projected in s-waves. The symmetry is explicitly broken for SU (3) by suppressing the meson-driven interactions consisting of quark b. We calculate the shock sections for scattering by pseudo-scalar and vector mesons, as well as their inverse processes. Maintaining the validity of this current approach in the low energy CM range, the most relevant channels are evaluated.

MEMBROS DA BANCA:
Externo à Instituição - FERNANDO SILVEIRA NAVARRA - USP
Interno - 284944 - JORGE MARIO CARVALHO MALBOUISSON
Presidente - 1551342 - LUCIANO MELO ABREU