Jun 2 – 7, 2019
Carnegie Mellon University
America/New_York timezone

Hybrid meson decay widths

Jun 4, 2019, 5:30 PM
Rangos 1

Rangos 1

Contributed Hadron Spectroscopy Hadron Spectroscopy


Mr Alessandro Giachino (INFN)


We calculated the decay widths of hybrid mesons [1], considered as hadrons that carry both quark-antiquark and gluon degrees of freedom.
In the construction of hybrid wave functions we  follow the coupling scheme adopted for gluelump studies [2], in which the energy spectrum of gluelumps, which are the states obtained by considering a gluon field bound a static color octet (given for example by the quark-antiquark pair), were calculated by means of a mean-field approach based on Coulomb Gauge QCD.
In the last decades, experimental evidence for states which cannot be explained within the quark model framework has accumulated, especially in the heavy quark sector (see Particle Data Group 3). For this reason, our decay width predictions should be of great interest for the experimental community.

[1] H. Garcia Tecocoatzi, A. Giachino, E. Santopinto, and E. Swanson, work in progress;
[2] P. Guo and A. P. Szczepaniak, G. Galata', A. Vassallo, and E. Santopinto,  Phys. Rev. D 77, 056005;
[3]  M. Tanabashi et al. (Particle Data Group), Phys. Rev. D 98, 030001 (2018).

Early Consideration No
Graduate Student Yes

Primary authors

Mr Alessandro Giachino (INFN) Prof. Elena Santopinto (INFN Genova, Italy) Eric Swanson (University of Pittsburgh) Hugo García-Tecocoatzi (Unam )

Presentation materials