Zobrazeno 1 - 10
of 51
pro vyhledávání: '"JPAC collaboration"'
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:
JPAC Collaboration, Smith, W. A., Glazier, D. I., Mathieu, V., Albaladejo, M., Albrecht, M., Baldwin, Z., Fernández-Ramírez, C., Hammoud, N., Mikhasenko, M., Montaña, G., Perry, R. J., Pilloni, A., Shastry, V., Szczepaniak, A. P., Winney, D.
We describe the formalism to analyze the mathematical ambiguities arising in partial-wave analysis of two spinless mesons produced with a linearly polarized photon beam. We show that partial waves are uniquely defined when all accessible observables
Externí odkaz:
http://arxiv.org/abs/2306.17779
Autor:
JPAC Collaboration, Winney, D., Fernandez-Ramirez, C., Pilloni, A., Blin, A. N. Hiller, Albaladejo, M., Bibrzycki, L., Hammoud, N., Liao, J., Mathieu, V., Montana, G., Perry, R. J., Shastry, V., Smith, W. A., Szczepaniak, A. P.
Publikováno v:
Phys. Rev. D 108 (2023) 5, 054018
The study of $J/\psi$ photoproduction at low energies has consequences for the understanding of multiple aspects of nonperturbative QCD, ranging from mechanical properties of the proton, to the binding inside nuclei, and the existence of hidden-charm
Externí odkaz:
http://arxiv.org/abs/2305.01449
Autor:
JPAC Collaboration, Albaladejo, M., Gonzàlez-Solís, S., Bibrzycki, Ł., Fernández-Ramírez, C., Hammoud, N., Mathieu, V., Mikhasenko, M., Montaña, G., Perry, R. J., Pilloni, A., Rodas, A., Smith, W. A., Szczepaniak, A., Winney, D.
We study the decay $J/\psi\to\pi^{+}\pi^{-}\pi^{0}$ within the framework of the Khuri-Treiman equations. We find that the BESIII experimental di-pion mass distribution in the $\rho(770)$-region is well reproduced with a once-subtracted $P$-wave ampli
Externí odkaz:
http://arxiv.org/abs/2304.09736
Autor:
JPAC Collaboration, Winney, D., Pilloni, A., Mathieu, V., Blin, A. N. Hiller, Albaladejo, M., Smith, W. A., Szczepaniak, A.
Publikováno v:
Phys. Rev. D 106 (2022) 09, 094009
Semi-inclusive processes are very promising to investigate $XYZ$ hadrons at the next generation of electron-hadron facilities, because they generally boast higher cross sections. We extend our formalism of exclusive photoproduction to semi-inclusive
Externí odkaz:
http://arxiv.org/abs/2209.05882
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:
JPAC Collaboration, Ng, L., Bibrzycki, L., Nys, J., Fernandez-Ramirez, C., Pilloni, A., Mathieu, V., Rasmusson, A. J., Szczepaniak, A. P.
Publikováno v:
Physical Review D 105 (2022) L091501
We perform the first model independent analysis of experimental data using Deep Neural Networks to determine the nature of an exotic hadron. Specifically, we study the line shape of the $P_c(4312)$ signal reported by the LHCb collaboration and we fin
Externí odkaz:
http://arxiv.org/abs/2110.13742
Autor:
JPAC Collaboration, Rodas, A., Pilloni, A., Albaladejo, M., Fernandez-Ramirez, C., Mathieu, V., Szczepaniak, A. P.
We perform a systematic analysis of the $J/\psi \to \gamma \pi^0\pi^0$ and $\to \gamma K_S^0 K_S^0$ partial waves measured by BESIII. We use a large set of amplitude parametrizations to reduce the model bias. We determine the physical properties of s
Externí odkaz:
http://arxiv.org/abs/2110.00027
Autor:
JPAC Collaboration, Bibrzycki, L., Fernandez-Ramirez, C., Mathieu, V., Mikhasenko, M., Albaladejo, M., Blin, A. N. Hiller, Pilloni, A., Szczepaniak, A. P.
Publikováno v:
Eur. Phys. J. C 81, 647 (2021)
The production of $\eta^{(\prime)}\pi$ pairs constitutes one of the golden channels to search for hybrid exotics, with explicit gluonic degrees of freedom. Understanding the dynamics and backgrounds associated to $\eta^{(\prime)}\pi$ production above
Externí odkaz:
http://arxiv.org/abs/2104.10646
Autor:
JPAC Collaboration, Albaladejo, M., Blin, A. N. Hiller, Pilloni, A., Winney, D., Fernández-Ramírez, C., Mathieu, V., Szczepaniak, A.
Publikováno v:
Phys. Rev. D 102, 114010 (2020)
The next generation of electron-hadron facilities has the potential for significantly improving our understanding of exotic hadrons. The XYZ states have not been seen in photon-induced reactions so far. Their observation in such processes would provi
Externí odkaz:
http://arxiv.org/abs/2008.01001