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We present the  calculation of the form factor of the χc01P→J/ψγ and χb0(1P)→Υ1Sγ  decays in the frame work of QCD sum rules. We also find  branching ratio Brχc01P→J/ψγ = 1.36-0.6+0.9×10-2 which is in agreement with the experimental data. Furthermore, we estimate the Γtot(χb0(1P))=4.2-2.21+3.18 MeV, where experimental bound for full width of χb0 is  Γtot(χb0(1P))<6 MeV

advances in high energy physics

Study of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:msub><mml:mrow><mml:mi>χ</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi><mml:mn>0</mml:mn></mml:mrow></mml:msub><mml:mfenced separators="|"><mml:mrow><mml:mn>1</mml:mn><mml:mi>P</mml:mi></mml:mrow></mml:mfenced><mml:mo>→</mml:mo><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi><mml:mi>γ</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M2"><mml:msub><mml:mrow><mml:mi>χ</mml:mi></…

Study ofχc01P→J/ψγandχ