Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Phi meson

In particle physics, the phi meson or ϕ meson is a vector meson formed of a strange quark and a strange antiquark. It was the ϕ meson's unexpected propensity to decay into K0 and K0 that led to the discovery of the OZI rule. It has a mass of 1019.461±0.020 MeV/c2 and a mean lifetime of 1.55±0.01 × 10−22 s .

History & Art

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around Phi meson. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Antiparticle
Self
C parity
−1
Composition
ϕ0 : ss
Decays into
K+ + K− · K0 S + K0 L · ρ + π · π+ + π0 + π−
Discovered
Connolly et al. (1963)
Electric charge
0

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

Properties

History

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

Phi meson

Nodes35
Edges34
Triples21
Avg. degree1.94
Density0.057143
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Phi meson

Top relations

Decays into · 4
Phi meson → K+ + K−, K0 S + K0 L, π+ + π0 + π−, ρ + π
Antiparticle · 1
Phi meson → Self
C parity · 1
Phi meson → −1
Composition · 1
Phi meson → ϕ0 : ss
Discovered · 1
Phi meson → Connolly et al. (1963)
Electric charge · 1
Phi meson → 0
Family · 1
Phi meson → Mesons
Hypercharge · 1
Phi meson → 0
Interactions · 1
Phi meson → Strong, Weak, Gravity, Electromagnetism
Isospin · 1
Phi meson → 0

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

meson decay mesons k0 10 rule 1963 mass mean lifetime quark state ozi connolly et al pions strong ss decays

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Phi mesonAntiparticleSelf1.00infobox
Phi mesonC parity−11.00infobox
Phi mesonCompositionϕ0 : ss1.00infobox
Phi mesonDecays intoK+ + K−1.00infobox
Phi mesonDecays intoK0 S + K0 L1.00infobox
Phi mesonDecays intoρ + π1.00infobox
Phi mesonDecays intoπ+ + π0 + π−1.00infobox
Phi mesonDiscoveredConnolly et al. (1963)1.00infobox
Phi mesonElectric charge01.00infobox
Phi mesonFamilyMesons1.00infobox
Phi mesonHypercharge01.00infobox
Phi mesonInteractionsStrong, Weak, Gravity, Electromagnetism1.00infobox
Phi mesonIsospin01.00infobox
Phi mesonMass1019.461±0.020 MeV/c21.00infobox
Phi mesonMean lifetime(1.55±0.01)×10−22 s1.00infobox
Phi mesonParity−11.00infobox
Phi mesonSpin11.00infobox
Phi mesonStatisticsBosonic1.00infobox
Phi mesonSymbolϕ, ϕ01.00infobox
Phi mesonTheorizedSakurai (1962)1.00infobox
Phi mesonTypes11.00infobox

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.