Mario Sánchez Sánchez

Molecular P ψ pentaquarks from light-meson exchange saturation

Zi-Ying Yang, Fang‐Zheng Peng, Mao-Jun Yan, Mario Sánchez Sánchez et autres

Theoretical predictions of the spectrum of heavy meson-baryon bound states are a fundamental tool for disentangling the nature of the different pentaquark states that have been observed in experimental facilities. Here we explore this spectrum in a phenomenological model that describes the …

cn, fr, es (code pays fourni par la source)

Healing Circles for Re-rooting People of Color

Heriberto Escamilla Morales, Jerry Tello, R. Bong Vergara, Héctor Sánchez-Flores et autres

Confronting the Lippmann–Schwinger equation and the N/D method for coupled-wave separable potentials

Mario Sánchez Sánchez, J. A. Oller, D. R. Entem

We study a family of separable potentials with and without added contact interactions by solving the associated Lippmann–Schwinger equation with two coupled partial waves. The matching of the resulting amplitude matrix with the effective-range expansion is studied in detail. When a counterterm …

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Confronting the Lippmann-Schwinger equation and the $N/D$ method for coupled-wave separable potentials

Mario Sánchez Sánchez, J. A. Oller, D. R. Entem

We study a family of separable potentials with and without added contact interactions by solving the associated Lippmann-Schwinger equation with two coupled partial waves. The matching of the resulting amplitude matrix with the effective-range expansion is studied in detail. When a counterterm …

Rethinking the P(4457)+ as the PψΔ+(4457) isoquartet D¯⁎Σc molecule

Fang‐Zheng Peng, Mao-Jun Yan, Mario Sánchez Sánchez, Manuel Pavón Valderrama

The nature of the Pc(4312), Pc(4440) and Pc(4457) pentaquarks is a fascinating theoretical question. Within the molecular picture their more usual interpretation is that of I=12 D¯Σc and D¯⁎Σc bound states. Here we argue in favor of interpreting the Pc(4457) pentaquark as …

cn, fr, es (code pays fourni par la source)

Cutoff effects in Hartree-Fock calculations at leading order of chiral effective field theory

Mario Sánchez Sánchez, D. D. Dao, L. Bonneau

We explore the effects on nuclear bulk properties of using regularization cutoffs larger than the nucleon mass within the chiral effective field theory with a power counting that ensures order-by-order renormalization in the two-nucleon system. To do so we calculate ground-state properties …

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PψsΛ(4338) pentaquark and its partners in the molecular picture

Mao-Jun Yan, Fang‐Zheng Peng, Mario Sánchez Sánchez, Manuel Pavón Valderrama

The LHCb collaboration has detected a new hidden-charm pentaquark with the quantum numbers of a $\mathrm{\ensuremath{\Lambda}}$ baryon: the ${P}_{\ensuremath{\psi}s}^{\mathrm{\ensuremath{\Lambda}}}(4338)$. This pentaquark will be interpreted as a ${\overline{D}}_{s}{\mathrm{\ensuremath{\Lambda}}}_{c}\ensuremath{-}\overline{D}{\mathrm{\ensuremath{\Xi}}}_{c}$ resonance within a contact-range theory. Here we briefly comment on the relation of the new …

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Light- and heavy-quark symmetries and the Y(4230) , Y(4360) , Y(4500) , Y(4620) , and X(4630) resonances

Fang‐Zheng Peng, Mao-Jun Yan, Mario Sánchez Sánchez, Manuel Pavón Valderrama

The heavy hadron spectrum is constrained by symmetries, of which two of the most important ones are heavy-quark spin and SU(3)-flavor symmetries. Here we argue that in the molecular picture the $Y(4230)$ [or $Y(4260)$], the $Y(4360)$, and the recently discovered $Y(4500)$ and …

cn, fr (code pays fourni par la source)

Molecular $P_ψ$ pentaquarks from light-meson exchange saturation

Zi-Ying Yang, Fang‐Zheng Peng, Mao-Jun Yan, Mario Sánchez Sánchez et autres

Theoretical predictions for the spectrum of heavy meson-baryon bound states are a fundamental tool for disentangling the nature of the different pentaquark states that have been observed in experimental facilities. Here we explore this spectrum in a phenomenological model that describes the …

fr (code pays fourni par la source)

Five-flavor pentaquarks and other light- and heavy-flavor symmetry partners of the LHCb hidden-charm pentaquarks

Fang‐Zheng Peng, Ming-Zhu Liu, Y. Pan, Mario Sánchez Sánchez et autres

The discovery of three pentaquark peaks — the Pc(4312), Pc(4440) and Pc(4457) — by the LHCb collaboration has a series of interesting consequences for hadron spectroscopy. If these hidden-charm objects are indeed hadronic molecules, as suspected, they will be constrained by heavy-flavor …

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The $P_{\\psi s}^{\\Lambda}(4338)$ pentaquark and its partners in the molecular picture

Mao-Jun Yan, Fang‐Zheng Peng, Mario Sánchez Sánchez, Manuel Pavón Valderrama

The LHCb collaboration has detected a new hidden-charm pentaquark with the quantum numbers of a $\Lambda$ baryon: the $P_{\psi s}^{\Lambda}(4338)$. This pentaquark will be interpreted as a $\bar{D}_s \Lambda_c$-$\bar{D} \Xi_c$ resonance within a contact-range theory. Here we briefly comment on the relation …

fr (code pays fourni par la source)

Interpretations of the new LHCb $$P_c(4337)^+$$ pentaquark state

Mao-Jun Yan, Fang‐Zheng Peng, Mario Sánchez Sánchez, Manuel Pavón Valderrama

Abstract Recently the LHCb Collaboration has observed a new pentaquark state, the $$P_c(4337)^+$$ P c ( 4337 ) + . Owing to its proximity to the $$\chi _{c0}(1S) p$$ χ c 0 ( 1 S ) p , $${\bar{D}}^* \varLambda _c$$ D …

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