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Nonstrange and strange pentaquarks with hidden charm

Nonstrange and strange pentaquarks with hidden charm are considered as diquark–diquark–antiquark composite systems. Spin and isospin content of such exotic states is discussed and masses are…
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Constraint Algebra for Regge-Teitelboim Formulation of Gravity

We consider the formulation of the gravity theory first suggested by Regge and Teitelboim where the space-time is a four-dimensional surface in a flat ten-dimensional space. We investigate a…
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Exotic mesons with hidden charm as diquark–antidiquark states

Exotic mesons with hidden strange (ss) and heavy quark pairs (QQ), where Q = c, b, are considered as diquark–antidiquark systems, (Qs) ⋅ (Qs). Taking into account that these states can recombinate…
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Pentaquarks and resonances in the $pJ/\psi$ spectrum

We consider exotic baryons with hidden charm as antiquark-diquark-diquark composite systems. Spin and isospin structure of such exotic states is given and masses are estimated. The data for…
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Narrow pentaquarks as diquark-diquark-antiquark systems

The diquark-diquark-antiquark model describes pentaquark states both in terms of quarks and hadrons. The latest LHCb data for pentaquarks with open charm emphasize the importance of hadron components…
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Photoinduced electron transfer in pheophytin- containing liposomes

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Tidal forces in Kottler spacetimes

The article considers tidal forces in the vicinity of the Kottler black hole. We find a solution of the geodesic deviation equation for radially falling bodies, which is determined by elliptic…
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Parameters of the triplet state and spectral properties of the monomeric chlorophyll in liposomes

Interaction of π and K mesons and nucleons in the model of composite superconformal strings

We construct a model of composite superconformal strings to describe hadron interaction amplitudes and the hadron spectrum. It belongs to a new class of dual (string) models and falls outside the…
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New narrow LHCb pentaquarks as lowest antiquark-diquark-diquark systems

The antiquark-diquark-diquark model describes pentaquark states both in terms of quarks and hadrons. We discuss pentaquark states with hidden charm $$P(\bar{c} cuud)$$ P ( c ¯ c u u d ) discovered in…
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