Time-reversal noninvariance in nucleon-nucleon scattering. I. General formalism and zero-range parameterization

Journal Article · Fri May 01 04:00:00 EDT 1981 · Ann. Phys. (N.Y.); (United States)

DOI:https://doi.org/10.1016/0003-4916(81)90255-4· OSTI ID:5953980

Binstock, J; Bryan, R; Gersten, A

The observation that, in a time-irreversible one-boson-exchange nucleon-nucleon potential model due to Bryan and Gersten, T-violation occurs mostly in the lowest-permitted angular momentum states, leads us to construct a phase-shift parameterization of the 50 to 450 MeV NN data where T-violation takes place only in the lowest possible angular momentum states. The five ordinary (T-symmetric) Wolfenstein amplitudes are taken from phase shift analysis, and the sixth, T-asymmetric amplitude, t(theta), is parameterized by a single infinitesimal phase parameter lambda/sub 1/(lambda/sub 2/) in the case of np(pp) scattering. This leads to unique predictions for the relative angular distributions of time-reversal-asymmetric observables P-Ot and P/sub A/-P/sub B/, even though the absolute magnitudes remain undetermined. The model corresponds to an ordinary interaction that yields the usual experimental data, plus a superimposed very short-range T-noninvariant force.

• Research Organization: Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87544
• OSTI ID: 5953980
• Journal Information: Ann. Phys. (N.Y.); (United States), Journal Name: Ann. Phys. (N.Y.); (United States) Vol. 133:2; ISSN APNYA
• Country of Publication: United States
• Language: English

Related Subjects

645303* -- High Energy Physics-- Particle Invariance Principles & Symmetries-- Applications to Strong Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ANGULAR DISTRIBUTION
BARYON-BARYON INTERACTIONS
BOSON-EXCHANGE MODELS
DIAGRAMS
DISTRIBUTION
ENERGY RANGE
FEYNMAN DIAGRAM
FUNCTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
INVARIANCE PRINCIPLES
ISOSPIN
LAGRANGIAN FUNCTION
MATHEMATICAL MODELS
MATRICES
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NUCLEON-NUCLEON INTERACTIONS
OBE MODEL
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PERIPHERAL MODELS
PHASE SHIFT
POLARIZATION
S MATRIX
SCATTERING AMPLITUDES
T INVARIANCE
ZERO-RANGE APPROXIMATION