+1fb most commonly refers to one [femtobarn](/wiki/femtobarn), a unit of [cross-section](/wiki/cross-section) used in particle physics. This minuscule measure quantifies the probability of interaction between subatomic particles, revealing the fleeting dance of matter at its smallest scales.
+## See also
+- [Particle Physics](/wiki/particle_physics)
+- [Standard Model](/wiki/standard_model)
+- [Quantum Field](/wiki/quantum_field)
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