haʊˈɛvɚ, ɪt wʌz lˈɜːnd æt ðə mˈɑːɹk aɪ ænd sˈʌbsᵻkwənt ɛkspˈɛɹɪmənts ðæt mˈoʊst fˌʌndəmˈɛntəl pˈɑːɹɾɪkəl ˌɪntɚɹˈækʃənz æt kəlˈaɪdɚz ɪnvˈɑːlv vˈɛɹi lˈɑːɹdʒ ɛkstʃˈeɪndʒᵻz ʌv ˈɛnɚdʒi ænd ðˈɛɹfoːɹ lˈɑːɹdʒ tɹænsvˈɜːs moʊmˈɛntə ɑːɹ nˌɑːt ʌŋkˈɑːmən; fɔːɹ ðɪs ɹˈiːzən, lˈɑːɹdʒ ˈæŋɡjʊlɚ kˈʌvɚɹɪdʒ ɪz kɹˈɪɾɪkəl fɔːɹ mˈɑːdɚn pˈɑːɹɾɪkəl fˈɪzɪks.
However, it was learned at the Mark I and subsequent experiments that most fundamental particle interactions at colliders involve very large exchanges of energy and therefore large transverse momenta are not uncommon; for this reason, large angular coverage is critical for modern particle physics.