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Reference.org
Lambda baryon
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<p>The lambda baryons (Λ) are a family of <a href="/facts/Subatomic_particle/tMEzcTWQ">subatomic</a> <a href="/facts/Hadron/C0sd1zty">hadron</a> particles containing one <a href="/facts/Up_quark/Aw3Vp3vk">up quark</a>, one <a href="/facts/Down_quark/Nq10ayEE">down quark</a>, and a third quark from a higher <a href="/facts/Flavour_(particle_physics)/RR7rsuTD">flavour</a> generation, in a combination where the <a href="/facts/Wave_function/KgM5ykjY">quantum wave function</a> changes sign upon the flavour of any two quarks being swapped (thus slightly different from a neutral <a href="/facts/Sigma_baryon/ETeyRRWp">sigma baryon</a>, Σ0). They are thus <a href="/facts/Baryon/QFwAUWK2">baryons</a>, with total <a href="/facts/Isospin/mnksCIaP">isospin</a> of 0, and have either <a href="/facts/Neutral_particle/pQbmxaaE">neutral electric charge</a> or the <a href="/facts/Elementary_charge/lPcj6CoQ">elementary charge</a> +1. </p>