Quarks on land and sea and in the air
DOI: 10.1063/1.3048478
A search for quarks in meterorites, air, and sea water has been conducted by W. A. Chupka, J. P. Schiffer, and C. M. Stevens of Argonne National Laboratory [Phys. Rev. Letters 17, 60 (1966)]. Previous quark hunts have been conducted by looking for fractionally charged particles in the products of high‐energy collisions of particles from accelerators and cosmic rays. (In sum, these experiments set a probable lower bound of
