5 papers
Spin Structure of heavy-quark hybrids
Jaume Tarrús Castellà
Exotic quarkonia are candidates to new types of hadrons including four quarks or gluonic degrees of freedom as constituents, the latter being a unique feature of QCD. We review rec…
QCD spin effects in the heavy hybrid potentials and spectra
Nora Brambilla, Wai Kin Lai, Jorge Segovia +1
The spin-dependent operators for heavy quarkonium hybrids have been recently obtained in a nonrelativistic effective field theory approach up to next-to-leading order in the heavy-…
Order corrections to Higgs boson decay into
Nora Brambilla, Hee Sok Chung, Wai Kin Lai +2
The process , where is the Higgs particle, provides a way to probe the size and the sign of the Higgs-charm coupling. In order to improve the theoretical control…
EFT determination of the heavy-hybrid spin potential
Wai Kin Lai
We study the spin splitting in the heavy quarkonium hybrid spectrum within the framework of an nonrelativistic effective field theory. We derive for the first time the spin-depende…
Spin structure of heavy-quark hybrids
Nora Brambilla, Wai Kin Lai, Jorge Segovia +2
A unique feature of quantum chromodynamics (QCD), the theory of strong interactions, is the possibility for gluonic degrees of freedom to participate in the construction of physica…