Probing $D_s^{+}\to {\eta }^{(\prime )}{\ell }^{+}{\nu }_{\ell }$ semileptonic decay within LCSR under chiral heavy quark effective field theory

Ruiyu Zhou, Hai-Bing Fu, Yi Zhang +1

Motivated by the successful application of Heavy Quark Effective Field Theory in describing decays from heavy to light mesons, this work explores its applicability to the semilepto…