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Hadron Spectrum Collaboration


The Hadron Spectrum Collaboration

The Hadron Spectrum Collaboration (hadspec) makes use of the numerical approach to Quantum Chromodynamics known as lattice QCD to study the spectrum of hadrons. An international collaboration of scientists in Europe, the US and India, we aim to understand how quarks and gluons confine themselves within the strongly interacting mesons and baryons observed in nature.


News


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Trinity College, Dublin hosts hadspec collaboration meeting


Between July 26th and July 31st, the membership of the Hadron Spectrum Collaboration got together in Dublin to discuss progress and future plans.

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Raul Briceno awarded DoE Early Career Research Award


Raul is one of 84 scientists selected from across the United States to receive significant funding for research as part of the DOE Office of Science’s Early Career Research Program. Raul's proposal, entitled "Multi-Hadron Systems via Lattice Quantum Chromodynamics", will be funded for five years.

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$\pi \rho$ scattering study published in JHEP

JHEP 07 (2018) 043

Reporting on work lead by Antoni Woss of DAMTP, this preprint shows the results of computing pseudoscalar-vector meson scattering in several partial waves, including the dynamically coupled $S$ and $D$ waves with $J^P=1^+$. The successful application of the finite-volume formalism in this case suggests that the calculation of resonances decaying into final states featuring spinning mesons is practical, which will be explored in future work.

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$f_0$ and $f_2$ resonances paper selected as "Editors' Suggestion" in PRD

Phys. Rev. D 97 054513

A calculation of coupled $\pi\pi$, $K\overline{K}$, $\eta\eta$ scattering at heavier than physical light quark masses has been selected by the Editors to appear on the front-page of the PRD website. The results of the calculation show that in the scalar sector a stable $\sigma$-like state appears, along with an $f_0(980)$-like resonance appearing at the $K\overline{K}$ threshold, while in the tensor sector, two resonances are observed, one decaying dominantly into $\pi\pi$ and the other into $K\overline{K}$.