A successful interpretation of the cross sections for elastic and inelastic vector meson production can be made if one assumes the underlying dynamics to be governed by hard partonic subprocesses. Extending these partonic approaches to longitudinally polarized electron-proton collisions, we estimate the expected production asymmetries at the HERA collider. The anticipated statistical errors on ...

The postulate that ordinary hadrons contain intrinsic charm quark states-(such as luudcc> in the proton) at the 1% level is shown to explain two sets of unexpected experimental results: (l).the copious diffractive. production of charmed hadrons at large longitudinal momentum in high energy proton-nucleon and pion-nucleon collisions, and (2) the anomalously large number of same-sign dimuon event...

Hard scattering in p-p collisions, discovered at the CERN ISR in 1972 by the method of leading particles, proved that the partons of Deeply Inelastic Scattering strongly interacted with each other. Further ISR measurements utilizing inclusive single or pairs of hadrons established that high pT particles are produced from states with two roughly back-to-back jets which are the result of scatteri...

We investigate the pair production of charged heavy leptons via photoninduced processes at the proposed CERN Large Hadron Collider (LHC). Using effective photon and Z approximations, rates are given for L+L− production due to γγ fusion and Zγ fusion for the cases of inelastic, elastic and semielastic pp collisions. These are compared with the corresponding rates for production via the gluon fus...

We describe basic features of multisoliton collisions in nearly integrable systems taking a perturbed nonlinear Schrödinger equation as an example. Collision of two solitons is shown to become inelastic only due to radiation losses, so that the change of the soliton parameters is small (;e, where e is the perturbation amplitude!. For three-soliton collisions we demonstrate, by using a simplecti...

We consider cold collisions of OH molecules in the P3/2 ground state, under the influence of a magnetic field. We find that modest fields of several thousand gauss can act to suppress inelastic collisions of weakfield-seeking states by two orders of magnitude. We attribute this suppression to two factors: sid an indirect coupling of the entrance and the exit channel, in contrast to the effect o...

In the framework of Quark-Gluon String Model we calculate the inclusive spectra of secondaries produced in d+Au collisions at intermediate (CERN SPS) and at much higher (RHIC) energies. The results of numerical calculations at intermediate energies are in reasonable agreement with the data. At RHIC energies numerically large inelastic screening corrections (percolation effects) should be accoun...

We present an experimental and theoretical study of atom-molecule collisions in a mixture of cold, trapped N atoms and NH molecules at a temperature of ∼600  mK. We measure a small N+NH trap loss rate coefficient of k(loss)(N+NH)=9(5)(3)×10(-13)  cm(3) s(-1). Accurate quantum scattering calculations based on ab initio interaction potentials are in agreement with experiment and indicate the magn...

Hard scattering in p-p collisions was discovered at the CERN ISR in 1972, by the method of leading particles, which proved that the partons of Deeply Inelastic Scattering strongly interacted with each other. Further ISR measurements utilizing inclusive single or pairs of hadrons established that high pT particles are produced from states with two roughly back-to-back jets which are the result o...

The initial conditions in high energy nucleus-nucleus collisions are determined by the small momentum fraction part of the nuclear wavefunction. This is the regime of gluon saturation and the most direct way to experimentally study it would be deep inelastic scattering at a high energy electron ion collider (EIC). This talk discusses some of the connections between physics at the EIC and the in...