Zobrazeno 1 - 10
of 284
pro vyhledávání: '"Voloshin, M. P."'
Autor:
Voloshin, M. B.
Publikováno v:
Phys. Rev. D 100, 114030 (2019)
It is argued that the results of recent precision measurements by LHCb of the lifetimes of charmed and bottom hyperons are very well consistent with the description within heavy quark expansion and allow to accurately determine matrix elements of lig
Externí odkaz:
http://arxiv.org/abs/1911.05730
Autor:
Voloshin, M. B.
Publikováno v:
Phys. Rev. D 100, 034020 (2019)
It is pointed out that the previously suggested interpretation of the hidden-charm pentaquarks $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$ as molecular bound states of $\Sigma_c \bar D$ and $\Sigma_c \bar D^*$ baryon-meson pairs gives rise to specific r
Externí odkaz:
http://arxiv.org/abs/1907.01476
Autor:
Voloshin, M. B.
I give a brief account of current topics in description of exotic multiquark mesonic resonances with hidden heavy ($c$ or $b$) flavor, the so-called XYZ states, in terms of hadronic molecules and hadro-quarkonium systems. Also discussed are the recen
Externí odkaz:
http://arxiv.org/abs/1905.13156
Autor:
Voloshin, M. B.
Publikováno v:
Phys. Rev. D 99, 093003 (2019)
The possibility of observing formation of hidden-charm pentaquarks as $s$-channel resonances in antiproton - deuteron collisions is discussed. It is pointed out that the masses of the reported by LHCb pentaquark resonances in the $J/\psi \, p$ channe
Externí odkaz:
http://arxiv.org/abs/1903.04422
Autor:
Voloshin, M. B.
Publikováno v:
Phys. Rev. D 99, 054028 (2019)
The radiative transitions from the neutral exotic $Z_c(4020)^0$ resonance to $X(3872)$ with emission of a photon and the pionic transitions from the charged $Z_c(4020)^\pm$ to $X(3872)$ and a charged pion $\pi^\pm$ are considered for both charmoniuml
Externí odkaz:
http://arxiv.org/abs/1902.01281
Autor:
Voloshin, M. B.
It has been recently suggested that the charged charmoniumlike resonances $Z_c(4100)$ and $Z_c(4200)$ are two states of hadrocharmonium, related by the charm quark spin symmetry in the same way as the lowest charmonium states $\eta_c$ and $J/\psi$. I
Externí odkaz:
http://arxiv.org/abs/1901.01936
Autor:
Voloshin, M. B.
Publikováno v:
Phys. Rev. D 98, 094028 (2018)
It is suggested that the recently reported charged charmoniumlike resonance $Z_c(4100)$ and the previously observed $Z_c(4200)$ are two states of hadrocharmonium, related by the charm quark spin symmetry in the same way as the lowest charmonium state
Externí odkaz:
http://arxiv.org/abs/1810.08146
Autor:
Voloshin, M. B.
Publikováno v:
Phys. Rev. D 98, 074004 (2018)
The implementation of the heavy quark spin symmetry in possible molecular states at the mixed bottom-charm threshold is somewhat different from that at the open charm or bottom thresholds. In particular it depends on two parameters describing separat
Externí odkaz:
http://arxiv.org/abs/1808.00427
Autor:
Voloshin, M. B.
Publikováno v:
Phys. Rev. D 98, 034025 (2018)
The recent observation and measurement of the decay $Z_c(3900) \to \rho \eta_c$ provides the data on the relative strength of the pion and $\rho$ coupling in the corresponding transitions between exotic resonances and pure heavy quarkonium. It is arg
Externí odkaz:
http://arxiv.org/abs/1806.05651
Autor:
Voloshin, M. B.
Publikováno v:
Phys. Rev. D 97, 114023 (2018)
The recent precision measurement of the relative yield of $D^+D^-$ and $D^0 \bar D^0$ meson pairs at the $\psi(3770)$ peak in $e^+e^-$ annihilation is about 3.7 sigma away from a straightforward theoretical estimate. It is argued that combined with a
Externí odkaz:
http://arxiv.org/abs/1803.11135