Zobrazeno 1 - 10
of 7 410
pro vyhledávání: '"A. Szczepaniak"'
Autor:
Stamen, Dominik, Winney, Daniel, Rodas, Arkaitz, Fernandez-Ramirez, Cesar, Mathieu, Vincent, Montana, Gloria, Pilloni, Alessandro, Szczepaniak, Adam P.
The construction of general amplitudes satisfying symmetries and $S$-matrix constraints has been the primary tool in studying the spectrum of hadrons for over half a century. In this work, we present a new parameterization, which can fulfill many exp
Externí odkaz:
http://arxiv.org/abs/2409.09172
Autor:
JPAC Collaboration, M. Albaladejo, I. Danilkin, S. Gonzàlez-Solís, D. Winney, C. Fernández-Ramírez, A. N. Hiller Blin, V. Mathieu, M. Mikhasenko, A. Pilloni, A. Szczepaniak
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 12, Pp 1-18 (2020)
Abstract In light of recent experimental results, we revisit the dispersive analysis of the $$\omega \rightarrow 3\pi $$ ω → 3 π decay amplitude and of the $$\omega \pi ^0$$ ω π 0 transition form factor. Within the framework of the Khuri–Trei
Externí odkaz:
https://doaj.org/article/106a37d4ec1f485bad84836c36877828
Autor:
Dawid, Sebastian M., Smith, Wyatt A., Rodas, Arkaitz, Perry, Robert J., Fernández-Ramírez, César, Swanson, Eric S., Szczepaniak, Adam P.
The Gribov--Zwanziger scenario attributes the phenomenon of confinement to the instantaneous interaction term in the QCD Hamiltonian in the Coulomb gauge. For a static quark-antiquark pair, it leads to a potential energy that increases linearly with
Externí odkaz:
http://arxiv.org/abs/2408.09007
Autor:
Montana, Gloria, Winney, Daniel, Bibrzycki, Lukasz, Fernandez-Ramirez, Cesar, Foti, Giorgio, Hammoud, Nadine, Mathieu, Vincent, Perry, Robert J., Pilloni, Alessandro, Rodas, Arkaitz, Shastry, Vanamali, Smith, Wyatt A., Szczepaniak, Adam P.
The Reggeized pion is expected to provide the main contribution to the forward cross section in light meson photoproduction reactions with charge exchange at high energies. We discuss the Reggeization of pion exchange in charged pion photoproduction
Externí odkaz:
http://arxiv.org/abs/2407.19577
Autor:
Feng, Yuchuan, Gil, Fernando, Döring, Michael, Molina, Raquel, Mai, Maxim, Shastry, Vanamali, Szczepaniak, Adam
Three-body dynamics above threshold is required for the reliable extraction of many amplitudes and resonances from experiment and lattice QCD. The S-matrix principle of unitarity can be used to construct dynamical coupled-channel approaches in which
Externí odkaz:
http://arxiv.org/abs/2407.08721
Autor:
Bibrzycki, Łukasz, Hammoud, Nadine, Mathieu, Vincent, Perry, Robert J., Akridge, Alex, Fernández-Ramírez, César, Montaña, Gloria, Pilloni, Alessandro, Rodas, Arkaitz, Shastry, Vanamali, Smith, Wyatt A., Winney, Daniel, Szczepaniak, Adam P.
Forward photoproduction of $\pi^+\pi^-$ pairs with invariant mass of the order of $m_\rho\sim 770$ MeV is traditionally understood to be produced via Pomeron exchange. Based on a detailed analysis of the CLAS photoproduction data, it is shown that th
Externí odkaz:
http://arxiv.org/abs/2406.08016
Autor:
Center, Joint Physics Analysis, Quirion, K., Fernández-Ramírez, C., Mathieu, V., Montaña, G., Perry, R. J., Pilloni, A., Rodas, A., Shastry, V., Smith, W. A., Szczepaniak, A. P., Winney, D.
The structure of hadronic form factors at high energies and their deviations from perturbative quantum chromodynamics provide insight on nonperturbative dynamics. Using an approach that is consistent with dispersion relations, we construct a model th
Externí odkaz:
http://arxiv.org/abs/2405.09517
Autor:
Joint Physics Analysis Center Collaboration, Winney, D., Pilloni, A., Perry, R. J., Bibrzycki, L., Fernandez-Ramirez, C., Hammoud, N., Mathieu, V., Montana, G., Rodas, A., Shastry, V., Smith, W. A., Szczepaniak, A. P.
Publikováno v:
Phys. Rev. D 109 (2024), 114035
Inclusive production processes will be important for the first observations of $XYZ$ states at new generation electron-hadron colliders, as they generally benefit from larger cross sections than their exclusive counterparts. We make predictions of se
Externí odkaz:
http://arxiv.org/abs/2404.05326
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
Abstract Structural material development for lightweight applications aims at improving the key parameters strength, stiffness and ductility at low density, but these properties are typically mutually exclusive. Here we present how we overcome this t
Externí odkaz:
https://doaj.org/article/3918ff9f725541db86954f5961a07190
Using effective Lagrangians constrained by the heavy quark spin symmetry and chiral symmetry, for the light quarks, we analyze the $D^0 D^0\pi^+$, $\bar{D}^0D^0\pi^0$ and $D^0\bar{D}^{*0}$ invariant mass spectra. Performing a simultaneous analysis of
Externí odkaz:
http://arxiv.org/abs/2311.16938