Published March 2012 | Version v1
Journal article Metadata-only

The strong CP problem

Creators

  • 1. Department of Physics, University of Florida, Gaineswille, FL 32611 (United States)

Description

QCD depends on an extra parameter θ-bar. When θ-bar equals 0, P and CP are violated. Because the strong interactions conserve P and CP, θ-bar must be very small, of order 10-10 or less. However, within the Standard Model, θ-bar is expected to be of order one. This puzzle is called the strong CP problem. Possible solutions are briefly described. (author)

Availability note (English)

Available from doi: <http://dx.doi.org/10.1016/j.crhy.2011.10.002

Additional details

Identifiers

DOI
10.1016/j.crhy.2011.10.002;

Publishing Information

Journal Title
Comptes Rendus. Physique
Journal Issue
no.2t.13
Journal Page Range
p. 176-179
ISSN
1631-0705

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
44026539
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
AXIONS; CP INVARIANCE; P INVARIANCE; QUANTUM CHROMODYNAMICS; SYMMETRY BREAKING
Descriptors DEC
BOSONS; ELEMENTARY PARTICLES; FIELD THEORIES; GOLDSTONE BOSONS; INVARIANCE PRINCIPLES; POSTULATED PARTICLES; QUANTUM FIELD THEORY

Optional Information

Notes
53 refs.