T.T. Chou

Binomial distribution for the charge asymmetry parameter

Abstract It is suggested that for high energy collisions the distribution with respect to the charge asymmetry z = nF − nB is binomial, where nFand nB are the forward and backward charge multiplicities.

Elastic scattering at CERN collider energy and the geometrical picture

Abstract Recent UA1 and UA4 experimental results for p p collisions at 540 GeV center of mass energy are analyzed in the geometrical picture.

Bose-Einstein condensation of atoms in a trap

We point out that the local density approximation (LDA) of Oliva is an adaptation of the Thomas-Fermi method, and is a good approximation when {epsilon}={h_bar}{omega}/{ital kT}{lt}1. For the case of scattering length {ital a}{approx_gt}0, the LDA leads to a quantitative result, Eq. (14{prime}), easily checked by experiments. Critical remarks are made about the physics of the many-body problem in terms of the scattering length {ital a}. {copyright} {ital 1996 The American Physical Society.}

Elastic pp scattering from ISR to Tevatron energies

Abstract A simple expression for the proton matter distribution is proposed which fits well within the geometrical model the elastic p p scattering data from ISR to S p pS Collider energies. The proton matter form factor is of the dipole form with an energy-dependent range parameter. The p p elastic differential cross section at Tetravon energies is obtained by extrapolation.

Remarks on multiplicity fluctuations and KNO scaling in pp collider experiments

Abstract It is suggested that a major source of the recently observed large multiplicity fluctuation satisfying KNO scaling in p p collider experiments is the fluctuation of the impact parameter b . Conssequences of the association of the KNO variable z with b are discussed.

Eigenvalue problem of the Hückel Hamiltonian for carbon-240

Abstract The Huckel problem for carbon-240 involves finding the eigenvalues of a 240×240 matrix which is too large even for a modern computer. We show that by utilizing the icosahedral symmetry of the molecule the characteristic polynomial is factorized and the eigenvalues obtained.

EXACT SOLUTION OF THE VIBRATION PROBLEM FOR THE CARBON-60 MOLECULE

Abstract Utilizing the icosahedral symmetry of the C 60 molecule by amalgamating two methods, we solve the vibrational eigenfrequency problem for carbon-60 to obtain exact algebraic expressions for the characteristic polynomials of the vibration. The inter-atomic interaction consists of four force constants, two for bond-stretching and two for angle-oscillation.

MOMENTUM DISTRIBUTION FOR BOSONS WITH POSITIVE SCATTERING LENGTH IN A TRAP

The coordinate-momentum double distribution function {rho}({rvec r},{rvec p})d{sup 3}rd{sup 3}p is calculated in the local density approximation for bosons with positive scattering length a in a trap. The calculation is valid to the first order of a. To clarify the meaning of the result, it is compared for a special case with the double distribution function {rho}{sub w}d{sup 3}rd{sup 3}p of Wigner. {copyright} {ital 1997} {ital The American Physical Society}

Experimental support for a unified physical picture: Narrow multiplicity distribution for e+e− and wide multiplicity distribution for pp collisions

Abstract Recent experimental results for 29 GeV e+e− collisions confirm some earlier predictions which follow from a unified physical picture for e+e− and p p collisions. The cluster size k, however, poses an unexpected puzzle.

A unified physical picture: Narrow poisson-like distribution for e+e− two-jet events and wide approximate KNO distribution for hadron-hadron collisions☆

Abstract Based on a recently developed unified picture of hadron-hadron and e+e− collisions, comparisons are made between experimental information and theoretical predictions. Further experiments are suggested.