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By Richard P. Feynman
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2 value of q (SW O o r m) ;uz S mwt be resolved t o get trhe g r e a t e s t otherwise i f v(qL) is k r ) m sawwhere a t some s p e c i a l we can convert t o a subtracted dfspersion r e l a t i o n . e. suppose f t i s k n m S Ss a constant, but n o t a p o l y n o d a l i n,'q 2 is k n m . 10) S does not appear. f o r q 2 its value when q2 and 2 ql t o get This s m e t r i c k helps i f the i n t e g r a l on mL looks divergent. Cer~eralTheorerim/ Bmkgr~und Ihe integral on m2 may n w converge b e t t e r f o r large m 2 .
G11-Mnn has proposed t h a t $U3, although nor: exactly s a t i s f i e d f o r the e n t i r e hadronic system may be more and w x e accurately s a t i s f i e d as shorter aad shorter space-tim i n t e r n a l s a r e invalved, That is how i t would behave i f an wderlying f i e l d theory had propagator gradient terms s a t i s f y i n g SU3, but mass-like terms violating SUy + Gmq where m is a nonSU3 invariant matrix, q a r e quark operators). is a strangeaeas changing curreat, h a d n g f o r e-plf?
I f three are equal only the S sunrivm Im>S Im>. Codfning two suck statefir in a product- we f gnd With theae rules and the rules for co&inlng state fa the. quark w d e l can be constmcted, angular momnta. $q s ; ' $ P S p S3 O $ Quark Model of Resonances 8 q u Photon-Haa'ronInteractions Resonance m a e s ml goes t o photon wmentum Q and f i n a l hadrons (see IE col-) m2, -8 JZ is the reeonance spin projectLon along the direction of m t i c n of the decw photon of b e l t c i t y 4-1. ) N m 2, P Two o r b i t a l e x c i t a t i m each af Eype X can n&e S, X , A m d tbe t o t a l o r b i t & angular ma, eari b e 2, 1, O rsa it t u r n out the s t a t e of sy-trg hm t o t a l L l, s t a t e s S or II caa have 2 ox 0 .
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