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We search for bottomonium states in Upsilon(2S)-> (bb-bar) gamma decays withan integrated luminosity of 24.7fb^-1 recorded at the Upsilon(2S) resonancewith the Belle detector at KEK, containing (157.8+-3.6) X 10^6 Upsilon(2S)events. The (bb-bar) system is reconstructed in 26 exclusive hadronic finalstates composed of charged pions, kaons, protons, and K^0_S mesons. We find noevidence for the state recently observed around 9975 MeV (X_(bb-bar)) in ananalysis based on a data sample of 9.3 X 10^6 Upsilon(2S) events collected withthe CLEO III detector. We set a 90 % confidence-level upper limit on thebranching fraction B[Upsilon(2S)-> X_(bb-bar) gamma] X \sum_i{B[X_(bb-bar)->h_i]}< 4.9 X 10^-6, summed over the exclusive hadronic final states employed inour analysis. This result is an order of magnitude smaller than the measurementreported with CLEO data. We also set an upper limit for the eta_b(1S) state ofB[Upsilon(2S)-> eta_b(1S) gamma] X \sum_i{B[eta_b(1S)-> h_i]}< 3.7 X 10^-6.

Search for Bottomonium States in Exclusive Radiative Upsilon(2S) Decays