On the Decay of theπ−Meson

Observations in particle physics from two neutrinos to the Standard Model

“…In its history at Nevis, the cloud chamber produced results on the decay of pions (Lederman, Tinlot, and Booth, 1951), on the mass of the neutrino born in pion decay (Lederman, 1951) (enter the muon neutrino; it would be almost a decade before this number was improved), on the scattering of pions (Byfield et ah, 1952) including the first suggestions of strong backward scattering that was later found by E. Fermi to be the indicator of the "3,3" resonance, and the Coulomb-nuclear interference of IT + and rr~ scattering in carbon. The carbon scattering led to analysis in terms of complex optical-model parameters which now, over 30 years later, are still a dominating subject in medium-energy physics convocations.…”

Nablyudeniya v fizike chastits: ot dvukh neitrino k standartnoi modeli

“… ñóìàòîøíîì ôèíàëå ýòîé äèññåðòàöèè ÿ ñäåëàë âûâîä (íåïðàâèëüíûé, êàê îêàçàëîñü), ÷òî ðàâåíñòâî âðåìåí aeèçíè ïîäðàçóìåâàåò èíâàðèàíò-íîñòü ñëàáûõ âçàèìîäåéñòâèé îòíîñèòåëüíî çàðÿäîâîãî ñîïðÿaeåíèÿ! Çà âðåìÿ ñâîåãî ïðåáûâàíèÿ â Íåâèñå êàìåðà Âèëüñîíà äàâàëà ðå-çóëüòàòû î ðàñïàäàõ ïèîíîâ [14], î ìàññå íåéòðèíî, îáðàçóþùåãîñÿ â ïèîííîì ðàñïàäå [15] (îáðàçóåòñÿ ìþîííîå íåéòðèíî; ïðîéäåò ïî÷òè äåñÿòü ëåò ïðåaeäå ÷åì ýòî ÷èñëî áóäåò óëó÷øåíî), î ðàññåÿíèè ïèîíîâ [16], âêëþ÷àÿ ïåðâûå íàìåêè íà ñèëüíîå ðàññåÿíèå íàçàä, êîòîðîå, êàê áûëî ïîçaeå ïîêàçàíî Ý. Ôåðìè, ÿâëÿåòñÿ óêàçàíèåì íà «3, 3»-ðåçîíàíñ è èíòåðôåðåíöèþ ÿäåðíîãî è êóëîíîâñêîãî ðàññåÿíèÿ π + è π íà óãëå-ðîäå. Ðàññåÿíèå íà óãëåðîäå ïðèâåëî ê àíàëèçó â òåðìèíàõ êîìïëåêñ-íûõ ïàðàìåòðîâ îïòè÷åñêîé ìîäåëè, êîòîðàÿ è ñåé÷àñ, 30 ëåò ñïóñòÿ, åùå ÿâëÿåòñÿ äîìèíèðóþùåé òåìîé íà êîíôåðåíöèÿõ ïî ôèçèêå ïðîìå-aeóòî÷íûõ ýíåðãèé.…”