{epsilon}{prime} and the decay {eta}{r_arrow}{pi}{pi} in a theory with both explicit and spontaneous {ital CP} violation

Journal Article · Fri Dec 01 04:00:00 EST 1995 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.52.6327· OSTI ID:132986

Jarlskog, C; Shabalin, E ^[1]

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1. Department of Mathematical Physics, LTH, Lund University, Box 118, S-22100 Lund (Sweden)

In an extended version of the standard model, containing three Higgs doublets but with a {ital CP}-invariant strong interaction sector, there are two sources of {ital CP} violation. For the parameter {epsilon}{prime}, of the {ital K}{r_arrow}{pi}{pi} system, such a theory allows any value less than or equal to its present experimental mean value. If the present experimental magnitude of {epsilon}{prime} is used one obtains that the rate for the {ital CP}-violating decay {eta}{r_arrow}{pi}{pi} is 10{sup 12} times larger than the corresponding rate in a theory without spontaneous {ital CP} violation. Our estimates also yield that the upper limit on the rate of {eta}{r_arrow}{pi}{pi} in such a theory is about a factor of 16 larger than the corresponding present upper limit obtained in a theory where {ital CP} is violated in strong interactions due to the {theta} term.

• OSTI ID: 132986
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 11 Vol. 52; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CP INVARIANCE
ETA MESONS
HIGGS BOSONS
KAONS
PIONS
STANDARD MODEL
STRONG INTERACTIONS
VIOLATIONS
WEAK HADRONIC DECAY