  High resolution angle-resolved photoemission spectroscopy data along the
(0,0)-($\pi$,$\pi$) nodal direction with significantly improved statistics
reveal fine structure in the electron self-energy of the underdoped
(La$_{2-x}$Sr$_x$)CuO$_4$ samples in the normal state. Fine structure at
energies of (40$\sim$46) meV and (58$\sim$63)meV, and possible fine structure
at energies of (23$\sim$29)meV and (75$\sim$85)meV, have been identified. These
observations indicate that, in LSCO, more than one bosonic modes are involved
in the coupling with electrons.
