论文标题
关于观察LHCB隐藏障碍的可能性，奇怪的penaquark $ p_ {cs}（4459）（4459）^0 $ in Antikaon诱导的$ J/ψ$ Meson protons in Protons and nuclei of Protons and nuclei of $ J/ψ$ j/ψ$λ$λ$生产阈值
Regarding the possibility to observe the LHCb hidden-charm strange pentaquark $P_{cs}(4459)^0$ in antikaon-induced $J/ψ$ meson production on protons and nuclei near the $J/ψ$$Λ$ production threshold
论文作者
论文摘要
我们通过考虑不连贯的直接非谐振$ k^-p \ to {j/ψ}λ$和两步谐振$ {k^ - } p \ to p_ {cs}（cs}（4459）（4459）（4459）^0 \ /con，我们研究了质子和核上的接近阈值$ j/ψ$梅森的生产。 We calculate the absolute excitation functions, energy and momentum distributions for the non-resonant, resonant and for the combined (non-resonant plus resonant) production of $J/ψ$ mesons off protons as well as off carbon and tungsten target nuclei at near-threshold incident antikaon energies by considering these elementary production channels as well as by assuming the spin-parity assignment of the hidden-charm resonance $ p_ {cs}（4459）^0 $ an n o n o o j^p =（3/2）^ - $在分支比率$ br [p_ {cs}（4459）^0 \ to {j/ψ}λ] $的六个不同方案中我们表明，所考虑的组合可观察的物体揭示了对这些情况的明确敏感性，这意味着它们可能是一个重要的工具，可以提供进一步的证据，证明存在Pentaquark $ P_ {CS}（4459）^0 $共振，并获得有关其衰减率的宝贵信息，以$ {J/ψ}λ$最终状态。他们的测量值可以在将来在J-PARC强体实验设施中进行。
We study the near-threshold $J/ψ$ meson production on protons and nuclei by considering incoherent direct non-resonant $K^-p \to {J/ψ}Λ$ and two-step resonant ${K^-}p \to P_{cs}(4459)^0 \to {J/ψ}Λ$ charmonium production processes. We calculate the absolute excitation functions, energy and momentum distributions for the non-resonant, resonant and for the combined (non-resonant plus resonant) production of $J/ψ$ mesons off protons as well as off carbon and tungsten target nuclei at near-threshold incident antikaon energies by considering these elementary production channels as well as by assuming the spin-parity assignment of the hidden-charm resonance $P_{cs}(4459)^0$ with strangeness as $J^P=(3/2)^-$ within six different scenarios for the branching ratio $Br[P_{cs}(4459)^0 \to {J/ψ}Λ]$ of the decay $P_{cs}(4459)^0 \to {J/ψ}Λ$. We show that the combined observables considered reveal definite sensitivity to these scenarios, which means that they may be an important tool to provide further evidence for the existence of the pentaquark $P_{cs}(4459)^0$ resonance and to get valuable information on its decay rate to the ${J/ψ}Λ$ final state. Their measurements could be performed in the future at the J-PARC Hadron Experimental Facility.
