28 citations · 170 across the 22 of their papers we have counts for
4 papers · 2 filters
Testing factorization in colour-suppressed beauty decays with the B -> η_c + K(K^*) modes
M. Gourdin, Y. Y. Keum, X. Y. Pham
The large discrepancy recently observed between $B \ra J/Ψ+ K (K^*)$ data and commonly used hadronic form factor models might be due to a breakdown of the factorization assumption.…
Implications of factorization for the determination of hadronic form factors in $D_s^+ \ra ϕ$ transition
M. Gourdin, A. N. Kamal, Y. Y. Keum +1
Using factorization we determine the allowed domains of the ratios of form factors, and , from the experimentally measured ratio $R_h \equiv Γ(…
On the Determination of and from Hadronic Two Body Decays
M. Gourdin, A. M Kamal, Y. Y. Keum +1
{}From Class I decays : $B^o \ra π^+ ( ρ^+ ) + D^- ( {D^*}^- )$, we determine , and from Class III decays : $B^+ \ra π^+ ( ρ^+ ) + \ol{D}^o ( {\ol{D}^*}^o )$, we determine an…
Failure of the commonly used B -> K(K^*) form factors in explaining recent data on B -> J/Ψ+ K ( K^* ) decays
M. Gourdin, A. N. Kamal, X. Y. Pham
We establish restrictions on $B \ra K ( K^* )$ form factors imposed by recent data on $B \ra J/Ψ+ K ( K^* ) $ decay rates and polarization. We show that these constraints are not s…