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Particle Correlation in Quantum Field Theory. II
Author(s) -
Manoukian E.B.,
Sattayatham P.
Publication year - 1998
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/(sici)1521-3978(199803)46:2<189::aid-prop189>3.0.co;2-u
Subject(s) - physics , annihilation , charged particle , quantum field theory , scalar (mathematics) , pair production , quantum fluctuation , quantum , quantum mechanics , field (mathematics) , quantum electrodynamics , mathematics , ion , geometry , pure mathematics
This is the second and last instalment of the investigation of particle correlation in quantum field theory for fundamental processes with two‐mono‐energetic particle productions. The angular correlation is defined as the average (epectation value) of the cosine of the angle between the momenta of the two outgoing particles. A positive correlation indicates, in a statistical sense, that the particles tend to travel in the same directions (as in beam formation) while a negative one that they tend to travel in opposing directions. The angular correlation of γγ produced in pair annihilation of charged particles in scalar quantum electrodynamics, scalar‐pair production by charged and neutral Nambu strings, as well as e + e — pair‐production by a Neutral Nambu string are studied in detail.