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6 papers · 2 filters
Comment on: "Nucleon-nucleon scattering lengths in QCD sum rules,"
R. J. Furnstahl, T. Hatsuda
In a recent Physical Review Letter, Kondo and Morimatsu present a QCD sum rule calculation of nucleon-nucleon scattering lengths. They also relate the empirical scattering lengths…
The Semileptonic Decay Fraction of B Mesons in the Light of Interfering Amplitudes
K. Honscheid, R. Waldi, K. Schubert
Consequences of the interference between spectator amplitudes for the lifetimes and semileptonic decay fractions of B^0 and B^+ mesons are discussed. Assuming duality and construct…
Spontaneous symmetry breaking of (1+1)-dimensional theory in light-front field theory (II)
Stephan Pinsky, Brett van de Sande
We discuss spontaneous symmetry breaking of (1+1)-dimensional theory in light-front field theory using a Tamm-Dancoff truncation. We show that, even though light-front field…
Observation of D+ -> rho0(770) mu+ nu
Fermilab E653 Collaboration
We report the first observation of the Cabibbo disfavored semileptonic decay mode D+ -> rho0(770) mu+ nu, and measure its decay rate relative to the Cabibbo favored mode D+ -> K*0(…
A Systematic SO(10) Operator Analysis for Fermion Masses
G. Anderson, S. Raby, S. Dimopoulos +2
A new approach for deducing the theory of fermion masses at the scale of grand unification is proposed. Combining SO(10) grand unification, family symmetries and supersymmetry with…
Analyticity Properties and Unitarity Constraints of Heavy Meson Form Factors
Eduardo de Rafael, Josep Taron
We derive new bounds on the b-number form factor of the B meson. (Revised version of hep-ph/9306214).