1. A.I. L’vov, P.N. Lebedev Institute of Physics, Moscow, Russia and M.I. Levchuk, B.I. Stepanov Institute of Physics, Minsk, Belarus On possible inconsistency of data on the total photoabsorption cross section for the deuteron in the Δ region

2. There are two measurements of the total photoabsorption cross section on the deuteron in the first resonance region: 1)Armstrong T.A. et al. The total deuteron hadronic cross section in the energy range 0.265–4.215 GeV, Nucl. Phys. B41, 445 (1972). (Daresbury, England) 2)MacCormick M. et al. Total photoabsorption cross sections for from 200 to 800 MeV, Phys. Rev. C53, 41 (1996). (Mainz, Germany) PDG2014

3. Partial channels in below 500 MeV 1)Deuteron photodisintegration ; 2)Coherent photoproduction ; 3)Incoherent photoproduction ; 4)Incoherent photoproduction ; 5)Incoherent photoproduction

4. Armstrong T.A. et al. Nucl. Phys. B41, 445 (1972)

5. Summing over five channels 1)Deuteron photodisintegration. There is rich experimental information on this channel. We take the total cross section from experiments with tagged photons only and fit them using the following formula Data are from Arends J. et al., Nucl. Phys. A412, 509 (1984) (○); Crawford R. et al., Nucl. Phys. A603, 303 (1996) (●); Blanpied G. et al., Phys. Rev. C61, 024604 (1999) (□).

6. 2) Coherent photoproduction.. There are data from Mainz Krusche B. et al., Eur. Phys. J. A6, 309 (1999) (□); Siodlaczek U. et al, Eur. Phys. J. A10, 365 (2001) (●). We fit them using the following formula

7. 3) Incoherent photoproduction. There are data from Mainz obtained in the same experiments Krusche B. et al., Eur. Phys. J. A6, 309 (1999) (○); Siodlaczek U. et al, Eur. Phys. J. A10, 365 (2001) (●). We fit them using the same formula

8. 4) Incoherent photoproduction. There are data from Benz P. et al, Nucl. Phys. B65, 158 (1973) ( ∎ ); Chiefari G. et al. Lett. Nuovo Cim. 13, 129 (1975) (Δ); Asai M. et al, Phys. Rev. C42, 837 (1990) (□). We also use our model L.M. et al. Phys. Rev. C74, 014004 (2006); L.M. Phys. Rev. C82, 044002 (2010).

9. 5) Incoherent photoproduction. There are no data on this reaction.

11. A consequence for the Baldin sum rule An assumption is not quite true. One should use the following integral equation where

12. Babusci D. et al. Phys. Rev. C57, 291 (1998)

13. L’vov A.I. & L.M. Nucl. Phys. A674, 449 (2000)

14. Thank you for your attention!