Positronium is the bound state of an electron and a positron. Consider only the states of zero orbital angular momentum l = 0. The most probable decay product of any such state of positronium with spin zero (singlet is)
A. 0 photons
B. 1 photons
C. 2 photons
D. 3 photons
E. 4 photons
(GR9677 #53)
The singlet state, s = 0 of Positronium is known as para-Positronium, decays preferentially into two gamma rays.
It can decay into any even number of photons (2, 4, 6, ...), but the probability quickly decreases with the number.
Thus, the most probable decay product of singlet state of positronium is 2 photons.
It can decay into any even number of photons (2, 4, 6, ...), but the probability quickly decreases with the number.
Thus, the most probable decay product of singlet state of positronium is 2 photons.
Answer: C
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