An unknown particle X decays very quickly into a neutron (m = 940 MeV/c2) with momentum p = (1000 MeV/c, 0, 0) and a positively charged pion (m = 140 MeV/c2) with momentum p = (500 MeV/c, 500 MeV/c, 0). What is the mass of this unknown particle?
An unknown particle X decays very quickly into a neutron (m = 940 MeV/c2) with momentum p = (1000 MeV/c, 0, 0) and a positively charged pion (m = 140 MeV/c2) with momentum p = (500 MeV/c, 500 MeV/c, 0). What is the mass of this unknown particle?
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An unknown particle X decays very quickly into a neutron (m = 940 MeV/c2) with momentum p = (1000 MeV/c, 0, 0) and a positively charged pion (m = 140 MeV/c2) with momentum p = (500 MeV/c, 500 MeV/c, 0). What is the mass of this unknown particle?
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