Analysis of Single-Pion Production Reactions π++p→ π++ π0+p, π++ π++nbelow 1 BeV

′ π ) . . . reactions in nuclei

We study the inclusive (e, eN), (e, eNN), (e, eπ), (e, eπN) reactions in nuclei using a Monte Carlo simulation method to treat the multichannel problem of the final state. The input consists of reaction probabilities for the different steps evaluated using microscopical many body methods. We obtain a good agreement with experiment in some channels where there is data and make predictions for ot...

Neural Network analysis for γγ → π + π − π 0 at Daphne 1

Parity - Violating Pion - Nucleon Coupling h ( 1 ) πNN from π + - Electroproton Production Near the Threshold

We study the possibility of measuring parity-violating pion-nucleon coupling h (1) πNN from π+-electroproton production in the threshold region. We calculate the electronhelicity asymmetry in terms of h (1) πNN and the Z-boson exchange between the electron and proton in leading-order heavy-baryon chiral perturbation theory. From the result, we demonstrate that the coupling can be determined to ...

RELEVANCE OF NUCLEON SPIN IN AMPLITUDE ANALYSIS OF REACTIONS π−p → ππn AND π−p → ηηn

The measurements of reactions πp → ππn and πn → ππp on polarized targets at CERN found a strong dependence of pion production amplitudes on nucleon spin. Analyses of recent measurements of πp → ππn reaction on unpolarized targets by GAMS Collaboration at 38 GeV/c and BNL E852 Collaboration at 18 GeV/c use the assumption that pion production amplitudes do not depend on nucleon spin, in conflict ...

Determination of the a 0 − a 2 pion scattering length from K + → π + π 0 π 0 decay