Zobrazeno 1 - 10
of 6 528
pro vyhledávání: '"Shastry A"'
Autor:
Shastry, B Sriram
A fundamental question about the nature of quantum materials such as High-T$_c$ systems remain open to date -- it is unclear whether they are (some variety of) Fermi liquids, or (some variety of) non Fermi liquids. A direct avenue to determine their
Externí odkaz:
http://arxiv.org/abs/2408.07682
In a Fermi system near or at half-filling, a specific superconducting pairing channel, if not explicitly included in the Hamiltonian, can be boosted by suppressing a competing pairing channel; this is exemplified by the enhancement of extended $s$-wa
Externí odkaz:
http://arxiv.org/abs/2408.05578
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
Autor:
Giacosa, Francesco, Shastry, Vanamali
We present the so-called Sill distribution, both in the nonrelativistic and relativistic cases, as a natural and simple way to include the effect of threshold(s) on the energy line shapes of resonances. The Sill is correctly normalized (even for broa
Externí odkaz:
http://arxiv.org/abs/2310.06346
We revisit the somewhat less studied problem of Yang-Lee zeros of the Ising antiferromagnet. For this purpose, we study two models, the nearest-neighbor model on a square lattice, and the more tractable mean-field model corresponding to infinite-rang
Externí odkaz:
http://arxiv.org/abs/2309.14562
We study the effects of off-shellness in the generalized parton distributions of the pion. On general grounds, these distributions exhibit a richer structure than in the on-shell case due to absence of the crossing symmetry. In particular, their mome
Externí odkaz:
http://arxiv.org/abs/2308.09236