Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Riquer, Verónica"'
We study compact hidden charm pentaquarks in the Born-Oppenheimer approximation, previously introduced for tetraquarks, assuming the heavy pair to be in a color octet. We show that Fermi statistics applied to the complex of the three light quarks, al
Externí odkaz:
http://arxiv.org/abs/2303.04056
Tetraquarks QQq*q* are found to be described remarkably well with the Quantum Chromodynamics version of the Hydrogen bond, as treated with the Born-Oppenheimer approximation. We show the robustness of the method by computing the mass of the observed
Externí odkaz:
http://arxiv.org/abs/2208.02730
Autor:
Brambilla, Nora, Chen, Hua-Xing, Esposito, Angelo, Ferretti, Jacopo, Francis, Anthony, Guo, Feng-Kun, Hanhart, Christoph, Hosaka, Atsushi, Jaffe, Robert L., Karliner, Marek, Lebed, Richard, Lewis, Randy, Maiani, Luciano, Mathur, Nilmani, Meißner, Ulf-G., Pilloni, Alessandro, Polosa, Antonio Davide, Prelovsek, Sasa, Richard, Jean-Marc, Riquer, Veronica, Rosina, Mitja, Rosner, Jonathan L., Santopinto, Elena, Swanson, Eric S., Szczepaniak, Adam P., Takeuchi, Sachiko, Takizawa, Makoto, Wilczek, Frank, Yamaguchi, Yasuhiro, Zou, Bing-Song
In recent years there has been a rapidly growing body of experimental evidence for existence of exotic, multiquark hadrons, i.e. mesons which contain additional quarks, beyond the usual quark-antiquark pair and baryons which consist of more than thre
Externí odkaz:
http://arxiv.org/abs/2203.16583
From a study of the lineshape of the $X(3872)$, the LHCb collaboration measures a sizeable negative effective range. This cannot be reconciled with a shallow $D\bar{D}^*$ bound state hypothesis. Based on Weinberg's compositeness criterion, together w
Externí odkaz:
http://arxiv.org/abs/2108.11413
The charmonium-like exotic states $Y(4230)$ and the less known $Y(4320)$, produced in $e^+e^-$ collisions, are sources of positive parity exotic hadrons in association with photons or pseudoscalar mesons. We analyze the radiative and pion decay chann
Externí odkaz:
http://arxiv.org/abs/2103.14356
New data from BESIII and LHCb show the existence of resonances with strangeness filling multiplets of the broken SU(3)_f symmetry, with the pattern predicted by the quark model. This is the case of the newly discovered Z_{cs} (3985) and Z_{cs}(4003),
Externí odkaz:
http://arxiv.org/abs/2103.08331
Publikováno v:
Phys. Rev. D 102, 034017 (2020)
We discuss how the latest data on X(3872) in B and B_s decays speak about its tetraquark nature. The established decay pattern, including the up to date observations by CMS, are explained by the mixing of two quasi-degenerate, unresolvable, neutral s
Externí odkaz:
http://arxiv.org/abs/2005.08764
Publikováno v:
Eur. Phys. J. C (2018) 78: 1011
We study the multiquark hadrons in large $N$ QCD under the 't-Hooft limit, extending Witten's picture of the baryons. We explore the decay widths of tetraquarks, pentaquarks and dibaryons. Based on the decay behaviors, we point out in the $N\to \inft
Externí odkaz:
http://arxiv.org/abs/1810.07848
Publikováno v:
Phys. Rev. D 98, 054023 (2018)
We discuss the necessary, albeit not sufficient, conditions for tetraquark poles to occur in the 1/N expansion of QCD and find the minimum order at which such poles may appear. Assuming tetraquark poles, we find a new non-planar solution with the min
Externí odkaz:
http://arxiv.org/abs/1803.06883
Some features and predictions of a recently proposed model based on diquark-antidiquark bound states are illustrated. Its ability in accomodating newly discovered charmed resonances around 4 GeV is discussed.
Comment: To appear in the proceeding
Comment: To appear in the proceeding
Externí odkaz:
http://arxiv.org/abs/hep-ph/0603021