%0 Generic %1 padmanath2018identifying %A Padmanath, M. %A Collins, Sara %A Mohler, Daniel %A Piemonte, Stefano %A Prelovsek, Sasa %A Schaefer, Andreas %A Weishaeupl, Simon %D 2018 %K spectroscopy %R 10.1103/PhysRevD.99.014513 %T Identifying spin and parity of charmonia in flight with lattice QCD %U http://arxiv.org/abs/1811.04116 %X The spectrum of charmonium resonances contains a number of unanticipated states along with several conventional quark-model excitations. The hadrons of different quantum numbers $J^P$ appear in a fairly narrow energy band, where $J^P$ refers to the spin-parity of a hadron at rest. This poses a challenge for Lattice QCD studies of (coupled-channel) meson-meson scattering aimed at the determination of scattering amplitudes and resonance pole positions. A wealth of information for this purpose can be obtained from the lattice spectra in frames with nonzero total momentum. These are particularly dense since hadrons with different $J^P$ contribute to any given lattice irreducible representation. This is because $J^P$ is not a good quantum number in flight, and also because the continuum symmetry is reduced on the lattice. In this paper we address the assignment of the underlying continuum $J^P$ quantum numbers to charmonia in flight using a $N_f = 2 + 1$ CLS ensemble. As a first step, we apply the single-hadron approach, where only interpolating fields of quark-antiquark type are used. The approach follows techniques previously applied to the light meson spectrum by the Hadron Spectrum Collaboration. The resulting spectra of charmonia with assigned $J^P$ will provide valuable information for the parameterization of (resonant) amplitudes in future determinations of resonance properties with lattice QCD.

@misc{padmanath2018identifying, abstract = {The spectrum of charmonium resonances contains a number of unanticipated states along with several conventional quark-model excitations. The hadrons of different quantum numbers $J^P$ appear in a fairly narrow energy band, where $J^P$ refers to the spin-parity of a hadron at rest. This poses a challenge for Lattice QCD studies of (coupled-channel) meson-meson scattering aimed at the determination of scattering amplitudes and resonance pole positions. A wealth of information for this purpose can be obtained from the lattice spectra in frames with nonzero total momentum. These are particularly dense since hadrons with different $J^P$ contribute to any given lattice irreducible representation. This is because $J^P$ is not a good quantum number in flight, and also because the continuum symmetry is reduced on the lattice. In this paper we address the assignment of the underlying continuum $J^P$ quantum numbers to charmonia in flight using a $N_f = 2 + 1$ CLS ensemble. As a first step, we apply the single-hadron approach, where only interpolating fields of quark-antiquark type are used. The approach follows techniques previously applied to the light meson spectrum by the Hadron Spectrum Collaboration. The resulting spectra of charmonia with assigned $J^P$ will provide valuable information for the parameterization of (resonant) amplitudes in future determinations of resonance properties with lattice QCD.}, added-at = {2019-08-06T14:59:01.000+0200}, author = {Padmanath, M. and Collins, Sara and Mohler, Daniel and Piemonte, Stefano and Prelovsek, Sasa and Schaefer, Andreas and Weishaeupl, Simon}, biburl = {https://www.bibsonomy.org/bibtex/200eb90a21e8479780f7846740d2961b2/cmcneile}, description = {Identifying spin and parity of charmonia in flight with lattice QCD}, doi = {10.1103/PhysRevD.99.014513}, interhash = {7a7546d45f9b1b32c0796fa8a0144bea}, intrahash = {00eb90a21e8479780f7846740d2961b2}, keywords = {spectroscopy}, note = {cite arxiv:1811.04116Comment: 19 pages, 17 figures, Version published in Physical Review D}, timestamp = {2019-08-06T14:59:01.000+0200}, title = {Identifying spin and parity of charmonia in flight with lattice QCD}, url = {http://arxiv.org/abs/1811.04116}, year = 2018 }