Proton-proton hollowness at the LHC from inverse scattering

Applying Artificial Neural Network Proton - Proton Collisions at LHC

this paper shows that the use the optimal topology of an Artificial Neural Network (ANN) for a particular application is one of the difficult tasks. Neural Network is optimized by a Genetic Algorithm (GA), in a hybrid technique, to calculate the multiplicity distribution of the charged shower particles on Larger Hadron Collider (LHC). Moreover, ANN, as a machine learning technique, is usually u...

Why the Real Part of the Proton-proton Forward Scattering Amplitude Should Be Measured at the Lhc

For the energy of 14 TeV, to be reached at the Large Hadron Collider (LHC), we have had for some time accurate predictions for both the real and imaginary parts of the forward proton-proton elastic scattering amplitude. LHC is now scheduled to start operating in two years, and it is timely to discuss some of the important consequences of the measurements of both the total cross-section and the ...

Duality and Proton - Proton Scattering at All Angles

: \ We obtain a very good description of all available large angle pp elastic scattering data using a dual model with logarithmic trajectories. Our fit strongly suggests that the dual amplitude is responsible for filling in ,a pronounced dip produced by the Pomeranchuk singularity. This new explanation of the shoulder in pp data survives the test of an enormous extrapolation from s N, 26-(GeV/~...

Bounds in proton-proton elastic scattering at low momentum transfer

We present a bound on the imaginary part of the single helicity-flip amplitude for spin 1/2-spin 1/2 scattering at small momentum transfer. The variational method of Lagrange multipliers is employed to optimize the single-flip amplitude using the values of σtot, σel and diffraction slope as equality constraints in addition to the inequality constraints resulting from unitarity. Such bounds prov...

Unique Determination of Three Proton - Proton Scattering Parameters at 9