This review describes the history of the discovery of the violation of the spatial parity P, the charge conjugation parity С, and the combined parity CP. The hypothesis of the existence of mirror particles was intended by its authors to restore the symmetry between left and right. The review presents the emergence and evolution of the concepts of ’mirror particles’ and ’mirror matter’ and can serve as а concise travel guide to ’mirror land.’ An important part of the review is the list of about 200 references with their titles.

PACS: 01.10.Fv, 01.65.+g, 11.30.Er, 12.60.−i (all) DOI: 10.1070/PU2007v050n04ABEH006227 URL: https://ufn.ru/en/articles/2007/4/h/ 000248752700008 2-s2.0-34547881175 2007PhyU...50..380O Citation: Okun L B "Mirror particles and mirror matter: 50 years of speculation and searc" Phys. Usp. 50 380–389 (2007) BibTexBibNote ® (generic)BibNote ® (RIS)Medline RefWorks RT Journal T1 Mirror particles and mirror matter: 50 years of speculation and searc A1 Okun,L.B. PB Physics-Uspekhi PY 2007 FD 10 Apr, 2007 JF Physics-Uspekhi JO Phys. Usp. VO 50 IS 4 SP 380-389 DO 10.1070/PU2007v050n04ABEH006227 LK https://ufn.ru/en/articles/2007/4/h/ Оригинал: Окунь Л Б «Зеркальные частицы и зеркальная материя: 50 лет гипотез и поисков» УФН 177 397–406 (2007); DOI: 10.3367/UFNr.0177.200704h.0397