Zobrazeno 1 - 10
of 610
pro vyhledávání: '"Vieira, H"'
In this work we estimate the $N_{\psi(2S)} / N_{J/\psi}$ yield ratio in heavy-ion collisions, considering the interactions of the $\psi (2S) $ and $J/\psi$ states with light mesons in the hadron gas formed at the late stages of these collisions. Star
Externí odkaz:
http://arxiv.org/abs/2409.12755
In this work we evaluate the $X(3872)$ to $ \psi (2S) $ yield ratio ($N_X/N_{\psi(2S)}$) in Pb Pb collisions, taking into account the interactions of the $\psi (2S) $ and $ X(3872)$ states with light mesons in the hadron gas formed at the late stages
Externí odkaz:
http://arxiv.org/abs/2401.11320
Publikováno v:
J. Phys. G: Nucl. Part. Phys. 51, 095003 (2024)
We investigate the interactions of the charged exotic state $Z_c(3900)$ in a hadronic medium composed of light mesons. We study processes such as $Z_c \pi \to D\bar{D}$, $Z_c \pi \to D^*\bar{D}^*$, $Z_c \pi \to D\bar{D}^*$ and the inverse ones. Using
Externí odkaz:
http://arxiv.org/abs/2310.18747
Publikováno v:
Universe 10, 267 (2024)
In this paper, we examine the role played by topology, and some specific boundary conditions as well, on the physics of a higher-dimensional black hole. We analyze the line element of a five-dimensional non-extremal Reissner-Nordstr\"{o}m black hole
Externí odkaz:
http://arxiv.org/abs/2310.08518
In a previous work we computed the thermally-averaged cross sections for the production and absorption of the $\chi_{c1}(4274)$ state in the hot hadron gas formed in heavy ion collisions. In the present work we estimate the final yield of this exotic
Externí odkaz:
http://arxiv.org/abs/2310.03948
Using the coalescence model we compute the multiplicity of $Z_{cs} (3985)^-$ (treated as a compact tetraquark) at the end of the quark gluon plasma phase in heavy ion collisions. Then we study the time evolution of this state in the hot hadron gas ph
Externí odkaz:
http://arxiv.org/abs/2303.05990
Publikováno v:
Phys. Rev. D 107, 104038 (2023)
Analog models of black holes have unequivocally proven to be extremely beneficial in providing critical information regarding black hole spectroscopy, superradiance, quantum phenomena and most importantly Hawking radiation and black hole evaporation;
Externí odkaz:
http://arxiv.org/abs/2301.11480
Autor:
Vieira, H. S.
Publikováno v:
Phys. Rev. D 107, 104011 (2023)
In this work we analyze the sound perturbation of Unruh's acoustic effective geometry in both (2+1) and (3+1) spacetime dimensions and present an exact analytical expression for the quasibound states of these idealized black-hole configurations by us
Externí odkaz:
http://arxiv.org/abs/2212.13590
We study the production of heavy multiquark states in the heavy ion collisions performed at the LHC. We assume that they are produced at the end of the quark-gluon plasma phase and then interact with light hadrons during the hadron gas phase. We use
Externí odkaz:
http://arxiv.org/abs/2209.03862
In this work we study the $D^*$ and $D$ multiplicities and how they change during the hadron gas phase of heavy ion collisions. With the help of an effective Lagrangian formalism, we calculate the production and absorption cross sections of the $D^*$
Externí odkaz:
http://arxiv.org/abs/2209.03814