pp Elastic Scattering at LHC in a Nucleon-Structure Model

We predict pp elastic differential cross sections at LHC at c.m. energy 14 TeV and momentum transfer range |t| = 0 - 10 GeV*2 in a nucleon-structure model. In this model, the nucleon has an outer cloud of quark-antiquark condensed ground state, an inner shell of topological baryonic charge (r ~ 0.44F) probed by the vector meson omega, and a central quark-bag (r ~ 0.2F) containing valence quarks. We also predict elastic differential cross section in the Coulomb-hadronic interference region. Large |t| elastic scattering in this model arises from valence quark-quark scattering, which is taken to be due to the hard-pomeron (BFKL pomeron with next to leading order corrections). We present results of taking into account multiple hard-pomeron exchanges, i.e. unitarity corrections. Finally, we compare our prediction of pp elastic differential cross section at LHC with the predictions of various other models. Precise measurement of pp elastic differential cross section at LHC by the TOTEM group in the |t| region 0 - 5 GeV*2 will be able to distinguish between these models.Comment: To be published in the Proceedings of the 12th International Conference on Elastic and Diffractive Scattering, DESY, Hamburg. Presented by M. M. Islam, May 200

Deep-Elastic pp Scattering at LHC from Low-x Gluons

Deep-elastic pp scattering at c.m. energy 14 TeV at LHC in the momentum transfer range 4 GeV*2 < |t| < 10 GeV*2 is planned to be measured by the TOTEM group. We study this process in a model where the deep-elastic scattering is due to a single hard collision of a valence quark from one proton with a valence quark from the other proton. The hard collision originates from the low-x gluon cloud around one valence quark interacting with that of the other. The low-x gluon cloud can be identified as color glass condensate and has size ~0.3 F. Our prediction is that pp differential cross section in the large |t| region decreases smoothly as momentum transfer increases. This is in contrast to the prediction of pp differential cross section with visible oscillations and smaller cross sections by a large number of other models.Comment: 10 pages, including 4 figure

Factors Affecting International Mergers and Acquisitions

The purpose of this paper is to investigate the factors that explain outward and inward merger and acquisition (M/A) activity for a country. The variables used to explain M/A activity include the exchange rate, interest rate, and stock market prices. Regression analysis is used to isolate and clarify the effects of these three factors for aggregate M/A activity and M/A activity within the food, beverage, and tobacco industry. The analysis shows that three variables, the exchange rate, interest rate, and stock prices, are quite important in explaining variations in M/A activity by country. Exchange rate changes in particular have a very elastic impact on outward M/A activity, indicating that price effects are important in determining outward investment flows. The stock market index positively influenced inward and outward M/A activity. The interest rate had a negative impact on M/A in the inward and outward M/A models with M/A outflows decreasing by about the same percentage that interest rates increase.Industrial Organization,