Production of hidden-charm strange pentaquarks <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>P</mml:mi><mml:mrow><mml:mi>c</mml:mi><mml:mi>s</mml:mi></mml:mrow></mml:msub></mml:math> from the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>K</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:mi>p</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:mi>J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi><mml:mi mathvariant="normal">Λ</mml:mi></mml:math> reaction
Samson Clymton, Hee‐Jin Kim, Hyun-Chul Kim
Abstract
We investigate the production of the hidden-charm pentaquark ${P}_{cs}^{0}(4459)$ with strangeness in the ${K}^{\ensuremath{-}}p\ensuremath{\rightarrow}J/\ensuremath{\psi}\mathrm{\ensuremath{\Lambda}}$ reaction, employing two different theoretical frameworks, i.e., the effective Lagrangian method and the Regge approach. Having determined all relevant coupling constants, we are able to compute the total and differential cross sections for the ${K}^{\ensuremath{-}}p\ensuremath{\rightarrow}J/\ensuremath{\psi}\mathrm{\ensuremath{\Lambda}}$ reaction. We examine the contributions of ${P}_{cs}$ with different sets of spin-parity quantum number assigned. The present results may give a guide for possible future experiments.