LETT~,,I~E A L NUOVO CIMENT0
VOL. 13, N. 9
28 Giugno 1975
Parity Nonconserving Effects in the Reaction n~-p-+ d A-~'. K . R . LASSEY (*) a n d B . H . J . MCKELLAR
School o/ Physics, University o/ .Melbourne - Parkville, Victoria (Lett. Nuovo Cimento, l l , 161 (1974))
Following discussions w i t h B. DESPLANQUES and H. J. PIRNER, ~he presence of a sign error in our work has emerged. This error resulted in p a r t from a misunderstanding of Danilov's paper (5) whose r e l a t i v e m o m e n t u m is defined (*') by k = 89 whereas ours is defined b y (9)
k =
89
Consequently, a r e t e n t i o n of t h e same definition of 2~, Xt, C as Danilov, requires t h a t we redefine t h e p.n.c, scattering a m p l i t u d e of eq. (2) as
(2')
]p..... (k', k ) = Ca~(% + an).(k" + k) + § ( % - - on)" {]ttat(k'Pt + kP~) + .~a~(k'l:'~§ kPt)) 9
The expressions for C, 28, ~t of eqs. (7) should also be redefined as: (7a')
(7b')
-
4/i2
a~s+14~+l = ~
(-- 1) ~ (2S + 1)~/4~s;1.1_a(0) ;
a misplacement of t h e subscripts of 2 has also been corrected. The expressions of eqs. (1) a n d (3) for Pv and ~ r e m a i n correct. The manifestations of t h i s sign error are t h a t all quoted numerical values of ~, ~, C, Pv(s), P~(t), Pv and a should have t h e i r signs reversed. I t is useful to point out t h a t t h e fair agreement obtained w i t h Danilov's dispersion calculations (a) is not
l*) Address from J u l y 1, 1975 : School of Physical Sciences, t he Flinders U ni ve rs i t y of South Australia, Bedford Park , South Australia, Australia 5042. (**) We t h a n k Dr. B. DESPLAlqQUES, who learned of the details of Danilov's work through private communication with him, for bringing t h i s to our attention.
351
S~2 d e s t r o y e d , b e c a u s e h i s c a l c u l a t i o n s also f l o t a t i o n ) of t h e w r o n g s i g n (*). More d e t a i l e d c a l c u l a t i o n s m a y b e has propagated. W e a r e g r a t e f u l t o D r s . PIRNE~ Dr. D~,SeL~NQUES for b r i n g i n g t o our
(*) See footnote previous page. (15) K. R. LASSEY and B. H. J. ~r
K. 1%. LASSEY a n d B. H. J. MCK]~LLAR r e p o r t v a l u e s for 2t, $~, C (21, A2, C in DaI~ilov's f o u n d i n ref. (1~), in w h i c h t h e s a m e sign e r r o r a n d D~SPLANQUES for u s e f u l d i s c u s s i o n s , a n d a t t e n t i o n d e t a i l s of D a n i l o v ' s w o r k .
A u s f . J o u r n . P h y s . , 27, 637 (1974).
~) by Societ~ ItMiana di Fisica Propriet~ letteraria riservata Direttore responsabile: CARLO CASTAGNOLI Stampato in Bologna dalla Tipografia Compositori coi tipi della Tipografia Monograf Questo fascicolo ~ stato licenziato dai torchi il 14-Vi1-1975
