The bound system of top and antitop quarks, called toponium, can be used for spectroscopic studies at distance scales of less than 10$^{-14}$ cm. Physics at such short distance scales is an abundant source of new information. The possibilities of creation of new particles in toponium decays, the determination of quark structure from spectroscopic data on toponium, and the verification of basic ideas on strong and electroweak interactions are reviewed.

RT Journal
T1 Toponium
A1 Dremin,I.M.
PB Physics-Uspekhi
PY 1986
FD 10 Oct, 1986
JF Physics-Uspekhi
JO Phys. Usp.
VO 29
IS 10
SP 903-923
DO 10.1070/PU1986v029n10ABEH003525
LK https://ufn.ru/en/articles/1986/10/a/