Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Jackura, Andrew W."'
We derive the integral equations for partial-wave projected three-body scattering amplitudes, starting from the integral equations for three-body amplitudes developed for lattice QCD analyses. The results, which hold for generic three-body systems of
Externí odkaz:
http://arxiv.org/abs/2409.15577
Autor:
Jackura, Andrew W., Briceño, Raúl A.
As the study of three-hadron physics from lattice QCD matures, it is necessary to develop proper analysis tools in order to reliably study a variety of phenomena, including resonance spectroscopy and nuclear structure. Reconstructing the three-partic
Externí odkaz:
http://arxiv.org/abs/2312.00625
The Efimov phenomenon manifests itself as an emergent discrete scaling symmetry in the quantum three-body problem. In the unitarity limit, it leads to an infinite tower of three-body bound states with energies forming a geometric sequence. In this wo
Externí odkaz:
http://arxiv.org/abs/2309.01732
The rate of mixing between a neutral kaon and an anti-kaon ($K^0-\bar{K}^0$) is given, in part, by a long-range matrix element, defined with two insertions of the weak Hamiltonian separated by physical, Minkowski time evolution. For physical quark ma
Externí odkaz:
http://arxiv.org/abs/2212.09951
The $\gamma^\star \gamma^\star \to \pi \pi$ scattering amplitude plays a key role in a wide range of phenomena, including understanding the inner structure of scalar resonances as well as constraining the hadronic contributions to the anomalous magne
Externí odkaz:
http://arxiv.org/abs/2210.08051
Autor:
Jackura, Andrew W.
Two methodologies have been presented in the literature which connect relativistic three-particle scattering amplitudes with lattice QCD spectra -- the ``relativistic effective field theory'' approach and the ``finite-volume unitarity'' method. While
Externí odkaz:
http://arxiv.org/abs/2208.10587
Autor:
Albaladejo, Miguel, Battaglieri, Marco, Bibrzycki, Lukasz, Celentano, Andrea, Danilkin, Igor V., Dawid, Sebastian M., Doring, Michael, Fanelli, Cristiano, Fernandez-Ramirez, Cesar, Gonzalez-Solis, Sergi, Blin, Astrid N. Hiller, Jackura, Andrew W., Mathieu, Vincent, Mikhasenko, Mikhail, Mokeev, Victor I., Passemar, Emilie, Perry, Robert J., Pilloni, Alessandro, Rodas, Arkaitz, Shepherd, Matthew R., Sherrill, Nathaniel, Silva-Castro, Jorge A., Skwarnicki, Tomasz, Szczepaniak, Adam P., Winney, Daniel
We highlight the need for the development of comprehensive amplitude analysis methods to further our understanding of hadron spectroscopy. Reaction amplitudes constrained by first principles of $S$-matrix theory and by QCD phenomenology are needed to
Externí odkaz:
http://arxiv.org/abs/2203.08208
Publikováno v:
Phys.Rev.D 105 (2022) 11, 114510
We derive the on-shell form of amplitudes containing two external currents with a single hadron in the initial state and two hadrons in the final state, denoted as $1+\mathcal{J}\to 2+\mathcal{J}$. This class of amplitude is relevant in precision tes
Externí odkaz:
http://arxiv.org/abs/2202.02284
Autor:
JPAC Collaboration, Albaladejo, Miguel, Bibrzycki, Lukasz, Dawid, Sebastian M., Fernandez-Ramirez, Cesar, Gonzalez-Solis, Sergi, Blin, Astrid N. Hiller, Jackura, Andrew W., Mathieu, Vincent, Mikhasenko, Mikhail, Mokeev, Victor I., Passemar, Emilie, Pilloni, Alessandro, Rodas, Arkaitz, Silva-Castro, Jorge A., Smith, Wyatt A., Szczepaniak, Adam P., Winney, Daniel
Publikováno v:
Prog. Part. Nucl. Phys. 127 (2022) 103981
The last two decades have witnessed the discovery of a myriad of new and unexpected hadrons. The future holds more surprises for us, thanks to new-generation experiments. Understanding the signals and determining the properties of the states requires
Externí odkaz:
http://arxiv.org/abs/2112.13436
Autor:
Jackura, Andrew W.
We discuss developments in calculating multi-hadron form-factors and transition processes via lattice QCD. Our primary tools are finite-volume scaling relations, which map spectra and matrix elements to the corresponding multi-hadron infinite-volume
Externí odkaz:
http://arxiv.org/abs/2111.01098