42952650
Null vectors in super Virasoro representations of the superconformal algebra.
Using the fusion procedure, a complete and straightforward algorithm for finding null vectors in Verma modules of the {ital N}=1 superconformal algebra is given.
2508651
The Contributions of Neutral Higgs Bosons to Charmless Nonleptonic B Decays in MSSM
We investigate the contributions of neutral Higgs bosons to nonleptonic transition $b \to q \bar{s} s, q=d, s$ under the supersymmetric context. Their effects to decay width and CP violation in corresponding exclusive decays are explored. The anomalous dimension matrices of the operators which have to be incorporated to include the contributions of neutral Higgs bosons are given. We find that when tan$\beta$ is large (say, 50) and neutral Higgs bosons are not too heavy (say, 100 GeV), contributions of neutral Higgs penguin can dominate electroweak penguin contributions, and for some processes, they can greatly modify both decay width and CP asymmetry.
123741473
Hadronic Width of P-Wave Heavy Quarkonium States with Massive Gluons
The hadronic decay widths of P-wave quarkonium states are calculated in the broken QCD with massive gluons. The comparison with preliminary data is also discussed.
124195329
W-T IDENTITIES, NORMALIZATION OF THE BS WAVE-FUNCTION AND PROPERTIES OF THE PION
We discuss some problems concerned with the normalization of the BS wave function in connection with Ward-Takahashi identities in the Lorentz covariant Bethe-Salpeter formalism proposed in the previous work. Physical quantities of the pion as a Goldstone boson, including the π0 → 2γ amplitude are calculated in the QCD motivated models and results are in agreement with the experimental data.
123961702
diagonalization of anomalous dimension matrices of Higher Twist Operators and Conformal Covariance
Anomalous dimension matrices of operators based on the twist-3 operator (or )are calculated and diagonalized. We find that for these operators the diagonal operators are not conformal operators. The higher twist effects of the pionic asymptotic wave function and form factor are also investigated.
122507937
Superconformal models from super W-constrained SKP hierarchies via the super Kontsevich-Miwa transformation
8777025
Quantum chromodynamics in background fields.
We try to build a framework for quantum chromodynamics in background fields. The nonvanishing vacuum condensates are described by the classical fields, while the corresponding quantum fields are quantized in the Furry representation and the physical states are defined in the physical QCD vacuum. The complete quark and gluon propagators are discussed in this framework and running condensate parameters are introduced by the renormalization requirement. A modified Callan-Symanzik equation is derived by taking account of the nonperturbative corrections.
32279311
Hadronic wave functions in D and B decays.
We propose meson wave functions and discuss their properties, such as the moments and the average transverse momenta. We also modify the Bauer-Stech-Wirbel (BSW) model by applying these wave functions to exclusive decays of {ital D} and {ital B} mesons. Comparisons between our results and those of BSW are given. An upper limit of {ital V}{sub {ital u}{ital b}} which is smaller than that of the BSW model is found.
22146343
Effective action of a scalar field in a curved spacetime with a small inhomogeneity.
The effective action of a quantum field in an inhomogeneous spacetime is studied. We extend the Hartle-Hu method, which was developed to investigate the model in a homogeneous spacetime with a small anisotropy, to evaluate the one-loop effective action for a scalar field in a curved spacetime with a small inhomogeneity. Through a rather lengthy calculation we obtain the final expression which is then applied to numerically investigate the quantum-field effect on the dissipation of the space inhomogeneity in the early Universe
11192776
Preservation of proton polarization by a partial Siberian snake.
A 9[degree] solenoidal spin rotator or 5% partial Siberian Snake was used to successfully accelerate polarized protons for the first time to 10.8 GeV kinetic energy in the Brookhaven Alternating Gradient Synchrotron with partial depolarization due to the intrinsic resonance crossing. It was found that a 5% partial snake can effectively overcome 18 imperfection resonances in this energy range. We also observed an interference between the spin flip induced by an intrinsic resonance and linear coupling due to the solenoid field of the partial snake.
29791617
Gravitational field of radiating cosmic string.
We examine the Einstein equation with the energy-momentum tensors which correspond to an infinite line string of finite radius plus an outgoing radiation field. It is used to see the effect of the radiation field on the spacetime of a cosmic string. We make some assumptions about the metric coefficients and find a class of exact solutions. The result can be applied to studying the back reaction on a radiating cosmic string.