  Possible existence of deeply bound kaonic nuclear systems was proposed
Akaishi and Yamazaki (2002} more than a decade ago, based on an ansatz that the
Lambda* = Lambda(1405) mass is 1405 MeV/c2, where the Lambda* is a Kbar-N
quasi-bound state decaying to Sigma-pi. Recently, a large number of data on
photo-production of Lambda(1405) in the gamma p to K+ pi{0+-} Sigma{0-+}
reaction were provided by the CLAS collaboration Moriya et al.(2013}, and
double-pole structure of the Lambda* has been intensively discussed by chiral
dynamics analyses {Roca (2013),Mai 2015}, whereas we show that a Lambda* mass
of 1405 MeV/c2 is deduced from the same CLAS data.
