Mesure du rapport d'embranchement de B → π⁰lv et extraction de l'élément |V[indice]u[indice]b| de la matrice CKM à l'expérience BABAR à l'aide de la technique des étiquettes B → D⁽*⁾lv

Texte intégral

(1)

(2)

(3) . !#"$&%#!'"$()*),+-"/.0%21354&6*"$(87#9;:<54=57>.?%# B → π0`ν .@BAC./"$(89.$DE+>7F%# G 13H G H54=57>. |V | %# G (I4=(J./"KDL9NMPO Q G 13AR),HB"KDL57#9TSVU2SVU-WXQ G 13(8DL%#%# G ( ub . 9K:#7*DLYZ!<T%<5@H.$DLYZ!<B. ./5 B → D(∗)`ν [. \ ]5^ _à bJc. d \

(4) f@ gihkj ^ _lBb e m-n boJ

(5) pcg g ncqcn c. rpjs

(6) \

(7)

(8) cutvwxm-n bJ_e gc b g b \ c qcb c y bJiJi{z|}JcB q~Jb ih,jq_ \ jwde5nc i{h,jZ|dP cTh,j ^ qlBb. T

(9) >. n ]5^ _à bJc C; .

(10) q

(11)

(12) m-n b c cbJ g b \

(13) qcb c. . c

(14) jsc q _bJq . !#"$&%#!'"$()*),+-"/.0%21354&6*"$(87#9;:<54=57>.?%# B → π0`ν .@BAC./"$(89.$DE+>7F%# G 13H G H54=57>. |V | %# G (I4=(J./"KDL9NMPO Q G 13AR),HB"KDL57#9TSVU2SVU-WXQ G 13(8DL%#%# G ( ub . 9K:#7*DLYZ!<T%<5@H.$DLYZ!<B. ./5 B → D(∗)`ν [. \

(15)

(16) c \ ]5^ _à bJc. vc ;qbc \ pb

(17) b ^ ncf \

(18) \

(19) c

(20) b_;

(21) .

(22) cb _ \

(23) _ \\

(24) cb h ;bRr ; c _ n cb p cn j

(25) n j o Znc - f@ fu}

(26) b

(27) b ^ h,qc ] /;

(28) Z Jf@q;cb V 5 J. rpjsc Pn nc \ iq c c c c c c c c c.

(29) y d ; <qk5scq ] 8; ? ] qVf0; _n ;}q}} }8 ^ j T; K Vi i o lBb8;B

(30) 8qif?cwJP / b e l5b B <@;qcb gPq@ f@ z _ f@ V ub Cz|c

(31) \ \

(32) \ qx ] ] ~f@ bJ vn

(33) _bJvnvbJvn q vn _l5bJub r# q_Cz g_ P \ o_ Le f f@ b ] qbJ f f@ g onc8_ n c /5q J @y z c by L_}qc P ;b yc q ;_ B → X `ν F_ |Vub | \ u ^

(34) scf?xj8; JqlBbx8 {z| ;

(35) 8 \ bJ

(36) @

(37) nc

(38) bqncqb

(39) _ f@ ? X u \ cn

(40) 8/Vby ncqb

(41) _cf?cu X \ cn

(42) /V ybJ qq_ pb Jy c qlBb c < \ u ncq

(43) q J@nc f@

(44) b c ic

(45) _qf@_c \ oqc n_n b_ o \

(46) b }; E evq n j f@5 ^ f?_lBblBb8;B qlBbu d lBb abJ_qq

(47) \ b a 5 ;q |V | t \ q kc a ;b @ ub J _ ; q~f@

(48) b c -doJ pqon p bc n _b c8qc pn_n b_ V d

(49) \

(50)

(51) c \ c !#"%$'&%(#)+*-,#& ./)10& do; <n c

(52) js

(53) /bJ # bJq Rqac q ;_ cf?_q \ _lBb Jncqb

(54) _ B + → < ` ub fubIbIb=cq n

(55) Z<lBbkqf \ q_l5bJubx _Nb=lBb8 b π 0 `+ ν

(56) aq lBb8 u 2 gb 2f?c b

(57) q \J\ 2Zz|cfu} n jcf?cB 8gn

(58) q ; q _ <lBbin b \ ;

(59) _ _ 8; _ g_ ;q_ p q2 -qxf?

(60) iq; qib n

(61) JbT ^ s f@P_ \ bJ _4 3, \ qb g g \\

(62) gZz fu}J n jJ f@ e R \

(63) q _ 5 z c boen pJ _ ; q ab \

(64) f? pZz 5 q

(65) |Vub| poncf \ c _ 5 Lnc b

(66) 6 E

(67) f? b i 7Cc cB \ cqn q # j qlBbc 8 2 c b ;*bJ_q_ ,qc Jc

(68) _

(69) c \ p_oc n bJ: 9<;=9;?>gJ

(70) _bJb ] ;@ E A R_ pn n cqc ; c e ] 2 B ; gq c 2c _s c k \ 5bc \ ,b@n _qq

(71) qJ b e+e− Enc q2t{z|c

(72) qpJb?nc

(73) f?

(74) wo c n Υ (4S) l5bJ

(75)

(76) qsc t 96% b? f \ 2 \ q

(77) kgf?c BB c Jc a

(78) \

(79)

(80) cBVbe_bf@q

(81) _ _ yTD C/ F EGE} −1 I H bJ C LKB g

(82) T;8 ^

(83) b q_q

(84) ~ @c cf?cB BB lBb

(85) pZz|} ~ qlBb c \ Vq cnc_~Zz b~f@ B cn

(86) b_p V

(87) pc q ; q p

(88) f@q_ \ qlBbc pcM E cl5bJ c B − → D(∗)0 `−ν Ri _8 B + → π0 `+ν c

(89) c bJ_

(90) n jc n j8 qc \

(91) qncbqc V c

(92) ;B n J f@ c_lBbc . .

(93) _. g

(94) ef@ bJ ocn fP}qce n cb 0 bJ

(95) p;8 ^

(96) ancf \ qcf?cBq

(97) Lb q_ . qlBb cf?_q \ _lBb V gj8

(98) qlBbc a q p

(99)

(100) b_; p \ b}Jqqc qe bJ *" &

(101) & &%$ $ &%) *p ? h,j ^ c?H c ?Rc

(102) >#CC

(103) @Co cb nca \ c cB @qc \

(104) f@q

(105)

(106)

(107) b_; \ b}_q 0{z| bJ0c u

(108) qc Kq noc 2 n jJqlBb aZz| _l5bJc cJ q_q kq 2 cw; qJ ,Zz|_ \ q@ e_. B → π`ν qc B + → π0`+ν B 0 → π−`+ν qe \\ pZz fu} n jcf?c Cc

(109) c;_b t 3,~bJ q_q ;B 7Cc pn_n b_ B(B 0 → π − `+ ν) = (1.33 ± 0.17stat ± 0.11syst ) × 10−4 j qlBbc \ b k_ Lnc b

(110) J E f@bJ 2}Jc 2 k;qcb k |V | ; qk ub t . . n b c n j _ 5 l J b. e. C | z q B l b . . . . > . n c e. c . b ; lBb< 3.2 × 10−3 4.5 × 10−3 _qf@_ <

(111) ;_

(112) _lBb f@ K,q \ qbJ \ ac

(113) b ^

(114) cf0KqlBbpJab q f?c b

(115) . n qbJ _ q c e e_ b \

(116) n _ _~q encf \ ;}qtxn cqqiwvf@ _qqcb Cz|cB @ _q cRde \ _b Rc if?cq_ ; qJ

(117) q

(118) 8nK_ icn?ncc v n jJqlBb@ t EbJbJ \

(119) n jq

(120) lBb \ qb PJc c eq \ Jq}_ gco_

(121) lBb \ cq 8 q _ Ln cb g E f@o

(122) Bn;qn bJq n \ qb pJ \ ncq

(123) qZ +8.$e9 G H5

(124) + R! ./"$v95!<A %#H Q %#(87# G P.$D ./"$5h,j ^

(125) qlBbpc \ qncbqc ;5s _ ] Z8f@

(126) B 8 r# w;qeZz g_ ;J cf?_q \ qlBb;@Lnc b pJE f@ dP.

(127) . M. 5(!#"$54=57>.?+g.$:< B + → π0`+ ν "$(87#9K:*DL7 R"$(89.$DE+>7F(87*%

(128) ~./B";4=D{7<(J.$DE+ 7 + .$:#NMPOT (J.";D A G 4 7 . |Vub| D .$:' 54 D G B)<./+ 7*DL9 ./( v(J.@.$:< SVU2SVU-WXBAZ),5"KDL4=57>.. j ] 8

(129) c? ] pj }_}}> '}8 ^

(130) j T K a i ~f?;

(131) lBb8;B 8

(132) c jelBb8 B z8/ an j_ \

(133) }8}Jqq_. ;rpj;_bg ZjJe _ f@ V _ J \ cqn c } ^ j ] pf? bJ f@ _ pvn _n n J

(134) q ~ j

(135) _ ^ r# q_vNjBb NjJ ] c o b B _ @ |V | n f@ E

(136) f f@

(137) b f@ # jJ

(138) f0_ B → X `ν cn ^ ; . 4 jc jij8J _n ^

(139) f q~jJ8

(140) ub. ub. ; n P} 2 nc bJnccv jc #_n _b c ^ # ncqb

(141) _c ^ b

(142) qg i #b f@c j5 Rrpj \

(143) n _ _ i x_qf@_c } ^ j@bnc _B qc i_I jx \ c

(144) b }8K_ d n_n bq;_ pE C j n_qc ./)%0 !#"%$ ./)+*qvj Jncqb

(145) _e \J\ ;n j- j8;

(146) bJ x 5 n |V | E

(147) f jf? bJ cn ^ ; c u. ub. ij_ # j

(148) q a b ^ j n j f@qc < n _b f@q_ \ _n B → π ` ν n ^ . jJ ` n ~}>e _ j aPfub~ V0 qcnc Z# jqn j~_f \ qqc 2 b → u J _ qC

(149) \

(150) , ;J} n j_E n qv \ qJ} n j_ E ;nc_ _uj

(151) }_ q j2q; q<f0

(152) *

(153) lBb8 cu j2q \ cbJ

(154) qg ^

(155) f $rpjq *q_ #bJ # ec;_b8; ?n f \

(156) i jPf@

(157) b c E

(158) f L nc p \ n bJf qyj

(159) u}Jq g q j |V | J >7 cg j c qn \ cqn _ 8rpjJ c b g }8; T; vn c \ _x ; qc K 0qbf@q _ ^ 8 210.5 E } gH bJ C LBK 2ncq_ nc ~KajJ Υ (4S) c 8;n . j@j:9;=9<;?> Jccnc aK j ] @E R _ pncn _ ; ] ] rpjJ Υ (4S)

(160) 8nc \

(161) bJn j e e n _qqJ. 5cn ^ g_ BB f@

(162) \ q

(163) . j 96% \ }8}_q_ ^ rpjJ;8 ^

(164) q Vb

(165) v f@q_ \ _n ;u n jJqlBb jqn jA8

(166)

(167)

(168) _ 8

(169) c BB c V j8;p; } ^ B f@

(170)

(171) n

(172) bn ~_? je

(173) f@qq \ Jqn B → D ` ν n ^ c8rpj q8 B → π ` ν cn ^ e

(174) o n jJ E Vq j

(175) f?qJq \

(176) qn _ p # jJcycc +. 0 +. 2. 2. ub. −1. + −. −. (∗)0 −. +. 0 +.

(177) 5 pr j_ f? b

(178) f@ j8 } cncfu}_ _ j~ a@jJ n f \ _ f@ ^ ;8 ^

(179) . Eb _ j8

(180) _nN f@q_ \ _nT jJI

(181)

(182) b_ j/ } c \ b}q_ jc _ j * " &

(183) & 5&%$ $'&%)+*

(184) b <qT Ch,j ^ Hg ><Rc

(185) C>DC C

(186) @C0 rpjJ xj

(187) 8

(188)

(189) \ b}q_ jc

(190)

(191) b_ P B → π`ν cn ^ *

(192) bJqc _ j n j JqlBb ck

(193) qIq

(194) \ _ q;_ u} c c B + → π0`+ν B 0 → π−`+ν cn ^ j=ncfu}_ } ;n jqJ E n _ _ Tn qncbw; '} B(B 0 → π−`+ν) = _=J 7> c? j

(195) c qn;gn qncbwKq v o j (1.33 ± 0.17stat ± 0.11syst ) × 10−4 E f L;nc = @}J _&;qbc i8 |Vub| _ E f 3.2 × 10−3 4.5 × 10−3 <à n b

(196) ~ pj? n jJqlBbc jJ c b jqn j ; 0 ; q qn q ^ q_f?cZRj8 j

(197) f0;qqc

(198) v ^

(199) cf0KqnybJn _ ^ f@&jy J_

(200) qN ncqb

(201) _yf@

(202) b cf?c ? jv/c _ \ cn _ q&q oncf \ }Jq jx} Rm8b jc f@ ;C _

(203) 8n _f \ / f@ b

(204) q jJq cn j_l5bJ? q_J} \

(205) q}JqV_x j ; EbJb

(206) j ?f?

(207) V8; qq } i;qw;}qe _ j f@

(208) \ cn q

(209) E f LLn an_n bq;_ O + "K%#

(210) +8.$:<5"x.$:<(87F.$:< +>7<5v)*"$5 57>.@DL7 $. :< ./DE. G Ch qncq \ j ^

(211) qnc ] T5 { B f?c Z-g_ ^ r# q_#E f L nc dP.

(212) y

(213) J.

(214) . < \ j ^

(215) qlBbi \ _n b_. J} Jn jJiq \ j ^ qlBb f@f@eb i

(216) i cn pJp \ J b PlBb _ E 8;f?cBqc & (. ./$ )+& &%) * & *%$ ! $ ( & *%!$ " "& ( <$ #& 4$5$ ./(D$ " & -&#@* &% 0 $ "& % ,3 q_2 bJkJ n

(217) q

(218) ac \ cq

(219) aqc n f \ . f@ \ qb \ gn b8 euJ

(220) Pg_ c b n bJ eJb&

(221) qc

(222) qs ncq; Jb ~ ~ \\ q ?lBb wIf0Kqsc lBbeb 0cB b

(223) ~n f \ c Zz|;f@ c _ lBbcq \

(224) s cbJ J ^ b bJ b VbJl5bJ Rc p qcnc p 5_cde pqe ^ bZJ b Pq \

(225) cq cbJ

(226) ilBbk n bc @lBb8 5 c< \

(227) qncbqc E8f@ ;q P~ ~g_ c6 R \

(228) f@q

(229) ulBb8 5 c u c d lBban f \ x_. \ xc?qc @J bJ @lBbTJb @n q

(230) ck? qc

(231) @tIq

(232) Fc J C& b

(233) b

(234) Zz j5bJ -b n q

(235) ? / b

(236) 7>

(237) c q glBb8; J Jq

(238) c s t c b Zx x

(239) bJc \ ; i v 5q

(240) cf?cP;ncbJ Cf0_ _ \ c cB 8J @_ \ cf?_

(241) @_

(242) x z|c \ b \

(243) s @q( ' * )+':,-) B bqc cgn f \

(244)

(245) nc glBb8 B PLlBb<cB: c n

(246) c e w;}> ;q 5q t f@qcb n f \

(247)

(248) V z|J_c te u bJ

(249) cb ; z|c

(250) kncVlBbpb * Lq

(251) t z \ c _ nc 9;=9<;?>; _ b Vb ] @ E

(252) <_; pn nc _ K c e ] B,; gq c . 9<;=9;?>g<b n nc _ * n?b ;n n cqc ; b iq__ u_ 0 / Bf #J. cqcnc

(253) o oc \ _ J et0bJu J qu}_ \ ncq

(254) = R

(255) lBbunc c _

(256) o

(257) cNn _qq

(258) qC8 \ ;

(259) _n b_ oJf?f@ c 021 * .@*' LlBb

(260) n f \ c Zz bNl5b b Zz byl5b u b da B \ 5b_ c .n

(261) bJ b p J ;n n bJfubq \ qb

(262) q bJ nc ;qc if@qq_qJ D <i}bJgi z \

(263) q Jn i

(264) eZz cbJqc g_n f \

(265) cf?cJnc. \

(266) qn bJq /

(267) 8yf?_ b n f \ c

(268) q lBb8 B b f0_ pb

(269) R_ E nc lBb<_

(270)

(271) b pn c

(272) qc 3ky% 7C c \ qb p q E

(273) n olBb Jb p c

(274) J etub _

(275) b cCZz|bJ c E nc o J_

(276) coqc

(277) 5qc J L, 3 T q

(278) 8n ;t z n jcq_ J p; f@

(279) 5w E ncecq n

(280) f0;c qlBb; q E

(281) n : E

(282) cpq E

(283) n M Lq}_ z nc tucq_ alBb _ pKf@ l5bJZb a bJ g c

(284) q_ ac cfu}_ pb~

(285)

(286) qsc cB . R cn j

(287) n j vcn

(288) _c Pq \

(289) ?jsc 0

(290) 0ncn c cv b ib ?f 5x J _ ; q \

(291) qncbq_ x 0f?c B B → π `ν 2' _ π c

(292) ~bJ \ _n b_ 0. 0.

(293) 5qq ncf \

(294) vxlBb8 B u c d cNqc ` ν

(295) \

(296) c Pq _ \ ? ` = _ nc b fub-x _ @ bJ _ @l5bJ

(297) c \ qncbqc E8f@ qc 0bFf cf?y

(298) lBb~_ ulBb8; B c @J _ ; q i

(299) s v ; E _q P b _ J x 5q

(300) b E_

(301) b C/a w \ _n bq eCz|_f \ _qlBbc Vb n j8cf?cJi bJ elBb8 3, %7C _olBb8 b \

(302) c V_of?c B o J E

(303) f?ocyl5b u n Bby8 _ π0 2 < E

(304) lBbcn n \ j Jf?scB

(305) \

(306) c ef0; j f?; qlBb f@ \ k z qcf?c Cz|bJ?f?;

(307) qncv nc _;iw \ }8;}q__Pxn j8cf?cPx / b ilBb8 5 c |Vub | Cz|c

(308) \ ; \ c_ \ ; aqo5s _ ] 8

(309) N ] 5jc _ \ E f?gf0_ J \ L;_el5bJZ iJ b \ \ cq

(310) qoncf \ f@ pJ bJ qc \

(311) qncbqc q

(312) c u8 z|c q

(313) kl5bJ0c E nc E8;f?cBqc J0wJ eKb

(314) eqJ bJq p f?c b

(315) p_o b n iJ _ ; q~

(316) Jb_pcy z|/;Jn f@ q ncf \ cj

(317) q f?c J B -cTbT eb ] ecTq@ncf \ jJ

(318) q \ qb \

(319) Eoew E n M E

(320) @ c;qbJ aq E clBb nc onc Vc _B ;_ pt 0.7 ± 0.2 Eq

(321) b C/ec

(322) bJ_ K k \ bJ}q_ 8; w \ c

(323) _qcb a c5b \ j ^

(324) qlBb * " &

(325) & 5 &%$I$ &%)+*Pt@{z b f@ -h,j ^ c< H c Rc

(326) > D CC

(327) @ C@ . < \ j ^

(328) qlBb \ qncbqc \ bq

(329) l5bCz|cqq iZz \ q_lBb qc g \ n E8f@ . b =? bJvnc lBbaJb ucB b

(330) ^ n f \

(331) q iqc u; f?c Pncf \ u \ \

(332) nc \ b b

(333) \ ; _8;Bqc J qq \ bJ =

(334) qf@q_ . cn

(335) ic nc8_ n c i sc \ b

(336) c Pc \ j ^

(337) qlBb@ci If0Kjcf0; qlBbc \ b c eqJ 8_q n cb JT \ ef?_ gncb _ b =Ebi n cq_ cqc

(338) Pq 5bn q=tyw \ j ^ qlBb? \ qncbqc @ c b 0c_ f@ i b iqx @qc

(339) @

(340) Pn j8_ b

(341) b

(342) f@ u_B5?t \

(343) n bJ q i z q 5bn q w \ c N js

(344) NqJ elBb&_

(345) n q C C C 5 C / K Eq

(346) Jbnc q- F KJ NL_ 5bn _- F K /JF K KI /J C /J /J / K=L_B 5bn q- / F E J /JF E5 J K E /J K KJ C/?qJ lBbPw0ncn _b _Z lBb

(347) qs cB \ qb Zz|_ Jbnc q cePf@q

(348) g nc 5 uPJ e

(349) n jc n jc ilBbPJc ;qq

(350) s g n jJqlBbc < ; f@q

(351) q?c anc8_ n c V ncqcB

(352) 8lBbc V Vb0 b

(353) VlBbeJb V/ 7Ccnc_ bJ \ ;

(354) _n b_qsc f@ p b ! 7>

(355) \ cn w;Rvc \ q ^ /

(356) 8Jo bJq

(357) q

(358) pn c

(359) qc \

(360) q pJb \

(361)

(362) ebJ5 ;.

(363)

(364) y.

(365) . . 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. D{D . DA. . . .

(366) . .

(367) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. M

(368) A M . . D{DLD. .

(369) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A<D. A . . . . . . . . . . . . . . . . . . . . . . . . . . . . A D . . . . . . . . . . . . . . . . . . . . . . . . . . AZA + . .AZA<DLD{D.

(370) .

(371)

(372) / M M . M

(373) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. y

(374) J. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. M. . . .

(375). AZA D{D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AZA D.

(376) $M- 2

(377)

(378) X /M PM O . . . . . . . . . . . . . . . CC

(379) Jbnc q iiiiiiiiiiiiiii C h*

(380) qn bJq p E nc bT ] cb q_q Vq q;on f?fubJ ii C / h*

(381) qn bJq ecE

(382) n Jb= ] cIb q_q oqPwPJvw0jJ

(383) quc n j8;f \ g iiiiiiiiiiiiiiiii C /J C R #; Jqc Jb 5scq ] 8

(384) iiiiiii C /J R f?cn_ f@ _ viiiiiiiiii C /J / nc q c MEc f@q niqn j8f \ q pcf0K _n i iiiiiiiiiiiiiii. . . C/. C$ C K C$.

(385) . DE6 G DE+ "$()*:#DL %#! MP:#()*D ./"$ M

(386) . . . .

(387) 0

(388) B =A

(389) |V | 1

(390)

(391) g1

(392)

(393)

(394) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . ub. . B → π 0 `ν . . . . . . . . . . . . . . . . . . . . . . . . . .. C

(395) Jbnc q iiiiiiiiiiiiiii e d c _B ;_ p

(396) f@qq \ qlBbc pbf@

(397) B iiiiiiiii / B bJqncqb

(398) _ J g

(399) qc ; qJ B → X `ν iiiiiiii u K B bJ n _b i c q ;_ B → X `ν iiiiiiii u K C \\ 5n jvjc _l5bJvv z c bx n _b xc iJ _ ; q \ qbJ \

(400) qn bJqqsc cf?cBV B → π0`ν iii B → Xu `ν K 5s _ VjJ

(401) qlBb g d \ b p_ pc _B ;_ B → π`ν K 5 C Hgscqe f@f?

(402) b q n qbf@qsc x p] He K 5 d

(403) b

(404) b=I d iiiiiii K / \\ 5n j @ \ _f?c _ x z cbJy n _b TJ @

(405) q Kq B → X `ν iiiiiiiiiiiiii u K K _

(406) qlBb J f?c b

(407) g \ _f?c _ p B → π`ν iii K KJ C Hgc b ; \ b}_qc /;g f@

(408) b iiii K KJ ebJ c: H

(409) b_; iiiiiiiii K KJ / H

(410) b_; iiiiiiiiii. DE6 G DE+ "$()*:#DL %#! MP:#()*D ./"$ M

(411) . . 1 . . . . . . . . . . . . . . . . . . . . . . . . . . .. NM. . .

(412) iM . VS U2SVU W . . /JC

(413) Jbnc q iiiiiiiiiiiiiii /J ,z|n nc qc ; b p_qc _ o q ncq_q _cb Vh63kh iiii /J / àc _ \

(414) \ c etv;

(415) n jc n j \ c _f?cBq iiiii /J K R n cb 9<;=9;?>'iiiiiiiiiiiiii /J KC ] or iiiiiiiiiiiiiii /J K d iiiiiiiiiiiiiii . . E /. /@C /?E / / BK KK KK K2E. K . E E,/. . ,E & @C . /.

(416) . /J K / /J K K. d ' H iiiiiiiiiiiiiii 32 iiiiiiiiiiiiiii R _ =iiiiiiiiiiiiii m H iiiiiiiiiiiiiii ]5^

(417) s f@iJiJ n _ n jJ f@ iiiiiiiii ]5^

(418) s f@iCz nclBbq

(419) __~c c viiiiiii q_ VZz|8 ^ iiiiiiiiiiiiii Hgcn J

(420)

(421) bnc qyc g nc n j8

(422) c iiiiiii <xn q qf@c _ iiiiiiiiiiii

(423) 8n ;_y \ _n b_ iiiiiiiii ] qfPbw; qJ VB ; q iiiiiiiii de ncf \ c gf@

(424) B ( b ' " ./( 4$ -) iiiiiiii q qul5bq c gJc iiiiiii Hgc

(425) b nc gq@ E f?;_l5bJ @iiiiiiiii Hgc

(426) b nc gjBbf0;qc iiiiiiiiiii. /J K E /J K . /J K /J E. /J K . R b /J E C /J E /J E / /J E K /J E E /J E /J E /J E . DE6 G DE+ "$()*:#DL %#! MP:#()*D ./"$ M

(427) . . . . . =. .

(428) . B − → D 0 `− ν(X). +.

(429) M. . . . → π 0 `+ ν. . 5 .

(430) . K 8 ^

(431) q p

(432) ; ^ iiiiiiiiiiiiii. K / od K v f \ _ iiiiiiiiiiiiiii K /JC

(433) qxn cnc q -h dP n B_ π ?ncqcn ^ i K /J B → X `ν } Jn jq E ;nc_ xiiiiiiiiii K K Jq8K cqcnc_ iiiiiiiiiiiiii K K C 3 \ c cq n _ iiiiiiiiiii K K B → D ` ν(X)

(434) qcnc q iiiiiiiiiii K K / B → π ` ν cqcnc_ iiiiiiiii − +. 0 −. 0 +. ,& ,&. @C . /. . &. . &@C &/ . . KC

(435) Jbnc q iiiiiiiiiiiiiii. c/u. 8K . . . . . . . . . . . . . . . .. 0. DC 8K. . . . . . . . . . . . . . . . . . . . . . . . . .. NM + M " B

(436) Υ (4S) → BB . &. . C C C / C K C/? E C? E C C/ C.

(437) . K K K K K E K K K K K K K K & K K C/ K K CC. _ } b}J n _ iiiiiiiii deq

(438) n

(439) qf@q8; qi; q}q iiiiiiiiii bJg \ qf@ Kq iiiiiiiiiiii 3 ?ncqcn ^ n b }Jq yiiiiiiiii do; n f \ ; q

(440) iiiiiiiiii

(441) q qq q ; * 7

(442) 8nci; iiiiiii }8n B

(443) bn f \ q iiiiiiii BB j8 \ E g }8n B b iiiiiii cos2 φB K E oq _~5 nc q iiiiiiiiiiiiii K E C m _V

(444) n \ _ iiiiiiiiiiii K E m _a;qq;_ iiiiiiiiiiiii K E 5 C

(445) n jcn

(446) vj Eb_R f \ q iii K E 5 Hg q_

(447) qn ^ b ^ iiiiiii K E / ] q8 ^ _ qy_ ; iiiiiiiiiii K q2

(448) qb qZ- q8Z ?ncqcn ^ J Jb}_cycc i K J C q2

(449) qbJ q iiiiiiiiiiiiii K J

(450) qZ @ncq Jn ^ iiiiiiiiiii K J / @n qcn ^ nc

(451) n q 8Jb}_o iiiiiii K J / C

(452) n qA L;nc iiiiiiiii K J / ] qJ }8J

(453) b}J n q iiiiiiii K J / / 8; n f \ ; q

(454) E pJb}_o yc K J / K r*

(455) b8; b #j Viiiiiiii K J / F E ] ;}q__ ^ #jn cnc q Ln E cq n _ extra K J /

(456) n qA L;nc V;qb~iiiiiiii K h*

(457) w>} Jn jq E ;nc_ Iiiiiiiiiiii K C h qC} n j_ E n q n

(458)

(459) n j n iiii K h qC} n j_ E n q 8; iiiiiii K ]5^ f?; qn bnc _B qc iiiiiiiiiiii K J C ]5^

(460) f?;_n bn c

(461) q_ b x j \ j ^ qnc f@5 _ Kq K J C C B → X `ν ; B → X `ν }J n jJq E ;nc_ F D0. . . c. u. _. C CC C CC C C / CCE CCE. C$ C/ C/ C%/ / C%/ / C%/ C%/ & CKC C KK C KB C KB C KB C E C E C EDC C E C E8K C EE C EE C E C E C E C @ C C @ C C

(462) @C.

(463) qq . K J C K J C / K J C K K J C FE. ] q8<E f L;nc iiiiiiiii m q

(464) Ke q;_ iiiiiiii m _ \ ;f?

(465) ;_ iiiiiiii Rq ^

(466) bf \ qy #jncfu}_8; qn D0 i K J ]5^

(467) f?;_n bn c

(468) q_ b @Jccnc ! 7> nc iii K J 5 C r ;qJv @n _ n ^ iiiiiiiii K J 5 π0 @ncq Jn ^ iiiiiiiiii K J 5 / r* n Bqx ?ncqcn ^ iiiiiiiii K J 5 K R \ d iiiiiiiiiii K J 5F E q2 c _bJ_ iiiiiiiiii K J 5 ] j8 \ #j }8n B b cos2 φB Jq

(469) _}bJ_ K J 5 h,j

(470) j qx;

(471) f? _ iiiii K J / ejc p ^

(472) f?;_nibJn c

(473) ;q_ iiiiiiiii K J / C ; q qnc iiiiiiiiii K J / B n bqJ iiiiiiiiiii K J / / Υ (4S) → B +B − E nc qI f ~iiii +− K J K ] bf@f0; ^ }_ #j ^ f?; qnbnc

(474) q q yiiii K &

(475)

(476) n j n B iiiiiiiiiiiiiii KC/ ] bJf?f? ^ iiiiiiiiiiiiiiii. DE6 G DE+ "$()*:#DL %#! MP:#()*D ./"$ M

(477) . . . . . . . C/ C/. C/ CK CK CK CK CK CK C ?E C ?E C ?E C ?E. C C C C /C DC . . . . . . . . . . . . . . . . . . . . . . . . . .. = B → π`ν NM

(478) + M

(479)

(480) ~ |V |

(481) . . . . . . . . . . . . . . . . . . . DE6 G DE+ "$()*:#DL %#! MP:#()*D ./"$. ub. . . . . . . . . . . . . . . . . . . . . . . . . .. @ M-. C @C. ! M

(482) NM

(483) /M- y . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . .

(484) . . . . . M "

(485)

(486)

(487) π

(488) iM

(489)

(490) M

(491) M . /M &M τ

(492)

(493) M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M

(494) @. .

(495) 0. C

(496) Jbnc q iiiiiiiiiiiiiiiI; 3 ce

(497) qcnc q iiiiiiiiiiiiiiI; / / TK _n q>f@c j5 iiiiiiiiiiiiiiI; K K H

(498) b_ E p cq; /C v c qc @;@C 8; iiiiI; K C do;x f \ qc iiiiiiiiiiiiiI; K gH c b oiiiiiiiiiiiiiiiI; K /

(499) n q V@}> \\ q_ iiiiiiiiiI; K K ,3 iiiiiiiiiiiiiiiI; E Jn qbJ q iiiiiiiiiiiiiiiiI; & DE6 G DE+ "$()*:#DL %< G 1 7#7<BAZ. . . . ZO c . . . . . . . . . . . . . . . . . . . . . . . . . . .. XSLBtoXulnu. yM . . .

(500) $M. b→u. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. C

(501) Jbnc q iiiiiiiiiiiiiiiI#C K 3 ce

(502) qcnc q iiiiiiiiiiiiiiI#C K / doK v f \ _ iiiiiiiiiiiiiiiIDC K ] cqcnc_~ @ncq Jn qc e;y

(503) b_ iiiiiiiiiIDC FE 3 7> nc q iiiiiiiiiiiiiiiI,/ ] <` ebqBbyn 5 iiiiiiiiiiiiiiI8K Jn qbJ q iiiiiiiiiiiiiiiiI 2. .

(504) . . . . . . . . . . . . . . . . . . C j8; c n B q_

(505) viiiiiiiiiiiiiiI .

(506) 5. Jg bJ k \ j p_q iiiiiiiiiiiiI,& / π _q

(507) iiiiiiiiiiiiiiiiiI,& 0. . . . . #. 2#

(508) cos φ . . . . . . . . . . . . . . . . M

(509) @ + B → π`ν =

(510) B . . . . . . . . . . . . . . . . . .. .

(511) . 2. . B.

(512) . . C bJ f@ IiiiiiiiiiiiiiiiI /?E. P. P P. /. fP}q8Kq iiiiiiiiiiiiiiiI / de c f@q8; q0 |V | iiiiiiiiiiiiI/K . ub. DE6 G DE+ "$()*:#DL %< G 1 7#7<BAZ. . . . . . . . . . . . . . . . . . . . . . . . .. .

(513) C.

(514) A . H \

(515)

(516) ; q wuJ _ ; q. B → π 0 `ν. . /. iiiiiiii. CC R #r w;qeZz g_ Fiiiiiiiiiiii C R #r w;qeZz g_ oJ f?q_ iiiiiiiii C /. . _B gn bcqqc p b _ f@f? pb r*

(517) wJqoCz g_ vii . C e d c _B ;_y cf?_q \ _lBbob f?c B iiiiiiiiii e d c _B ;_yj8

(518) _l5bJ bf@

(519) B iiiiiiiiiii / H

(520) bf? J g 7>

(521) c \\ 5n jc \

(522) qf@ ;q pb q_q

(523) \ b pf@

(524) b c |V | tv{z _oc _B ;_ p

(525) f@qq \ qlBbc B → X `ν ub u K r*b

(526) qc ; q

(527) f0_q

(528) \ b # 7Cc f@ scqc * Lnc b

(529) E

(530) f? iiiiiiiiiiiiiiii E H

(531) b_; oJ p] H \ bJ oqvn qncb b Ln cb E f@ f (q2) 8J + _ pc q ;_ B → π`ν iiiiiiiiiiiii H

(532) b_; d _5_ \ _ p;qcb \

(533) qf@ _ \ b Ec gl5b_ gcn } bn _ c glBb8; B Jiquf?c i f \ q

(534) oc *

(535)

(536) b_; Rc <n _w} Kq Cm ?c eh d \ b _n qncb*J Ln cb oJ E

(537) f? f (q2) c f (q2) 8 o_

(538) qc + 0 q B → π`ν iiiiiiiiiiiiiiiii _qb Kq If@cjJ c NZz ;8 ^

(539) F Jncqb

(540) _Fc J _ ; q niby ; c_lBbc

(541) iiiiiiiiiiii B → X `ν. /JC /J /J / /J K. /J E. u. ] cnc q @nnca \ 5bn _J

(542) 8nc Υ c-En _Ja z J _ b n fJ gn _q_ q e+ e− iiiiiiiiii pncn _ ;cb qqJ_ eJb ] gh632h iiiiiii H _~Zz qc n _y L_ n b iiiiiiiii Rbf@q _ _

(543) 3cb c c cq c \ V_e cnccbM 9;=9<;?> \ bJq p c J }bJ Niiiiiiiiiiiiii de _q VJb cnccb: 9;=9;?>F b Ln ;88 _ \ w x y iii. ,&. / / /& KC. / K E8K. E . E E K.

(544) . 5_. /J . de _q VJb cnccb :9;=9;?>F bn 88; q \ q y z iii /J ] n jJ f?xJb ] er 5bJ L;n ? \ q x y iiiiiiiiiii /J ] n jJ f?xJb ] er 5bJin ? \ w y z iiiiiiiiiii /J & H

(545) qbJ q J @n qJl n bn jJ 0Jb ] er z ?c φ c En _ {z JqZz|_n _ Jn wu n iiiiiiiiii /JC/ ] n jJ f?xJiqxd bJn ? \ w y z iiiiiiiii /JCC ] n jJ f?u wPncb \ e

(546) _ K \ f@qsc c V b \

(547) n bJn j goq d iiiiiiiiiiiiiiiiii /JC$ ] n jJ f?xJiqvc nc qyc \ j c / \ p_d 'H ii /JC/ ] n jJ f?xJb 32 5b n ? \ q y z iiiiiiiiiii /JC K ] n jJ f?xJb m H iiiiiiiiiiiiii /JC E _qb Kq n c

(548) ;q \ ; f@sc cn

(549) _; qc nc n j8

(550) c /JC

(551) T; q b V ^ \ _l5bJ g π0 cn

(552) b_ t 9;9;?> iii /J C$ c b

(553) N dE/dx 8; ~w d \ b 0 \ _n b_ &J 7> c ^ \ cgqf \ b_ _ iiiiiiiiiiiiii /J C

(554) q

(555) ;/ f@ bJ \ b g

(556) e ^ \ c o \

(557) qncbqc c En q _ b p_f \ bJq _ tx z bd 'H iiiiiiii /J C& 3 @nnc_ iCz|_

(558) 8nKq~ _ n A Enc qy_ b p_f \ bJq _ /J 3 @nnc_ iCz|_

(559) 8nKq~ fub A Enc q~Ji_ b _f \ bJq _ . ?E ,/. E . /. . K ?E ?E . KC g_ ^ r# q_uiiiiiiiiiiiiii C K m8 ^ f?yq ;f # jJi

(560) f@q_ \ qn B J n ^ B → π ` ν i C / K / ] n jJ f?;_no _! * j cf?_q \ _nv n jJqlBb iiii C / K K m

(561) au pj j ^ \ ;jc q V j8;V joncfu}_8; qn}8n B

(562) byq _q a_ m iiiiiiiiiiiiiii C $C K E qc φ θ θ 8; γ qf \ q_ ?q cos φ iiiii C C / K bJg \ qf@ ;_ iiiiiiiiiiiiiii C C K K doK ncf \ _ J E pc ;

(563) w}Jq ?iiiiiii /C DC K doK ncf \ _ J E q> j_~c ~iiii /C K & doK ncf \ _ J E \ _ V; w;}qc $C iiiiii /C ,/ −. D0. D0. B. BY. Bπ 0 `. 2. B. 0 −.

(564) 55qq. KC/ KCC K$C K C / K C K K C E K

(565) C . doK ncf \ _ J E \ _ V; w;}qc iiiiii doK ncf \ _ J E \ _ V; w;}qc / iiiiii f \

(566) q

(567) ~ } c qq J 87

(568) 8Jn 8;'C$ cos2 φB f \

(569) q

(570) ~ } c qq J 87

(571) 8Jn 8;{ cos2 φB f \

(572) q

(573) ~ } c qq J 87

(574) 8Jn 8;!/ cos2 φB f \

(575) q

(576) ~ } c qq J 87

(577) 8Jn 8; KB cos2 φB doK ncf \ _ x >j cos2 φ _

(578) q}JbJ_ _@ j }8n B b B

(579) g f \ q iiiiiiiiiiiiiii KC$ cos2 φB j8 \ n f \ ; q

(580) y}> ac BB BB c c ii KC

(581) hkdom8 }Jqcy} ^

(582) qvjJ EbJq< f \ _ iiiii KC& cos2 φ Jq

(583) _}bJ_ /c w ^ _ j jJ0 c b E f jJ

(584) P VjJ B Eb_R f \ q iiiiiiiiiiiiii K H _q qnr* ^ c

(585) g c b iiiiiiiiii K DC cos2 φB Jq

(586) _}bJ_ /c w ^ _ j jJ0 c b E f jJ

(587) P VjJ 8K v f \ _ iiiiiiiiiiiiiii K cos2 φ Jq

(588) _}bJ_ /c w ^ _ j jJ0 c b E f jJ

(589) P VjJ B 8K v f \ _ _ jTu_f?c Vf@ }_ ~j x q iiii K ,/ cos2 φB Jq

(590) _}bJ_ /c w ^ _ j jJ0 c b E f jJ

(591) P VjJ 8K v f \ _oqy q2 }JqZ iiiiiiiiiii K 8K q2

(592) qb q'iiiiiiiiiiiiiii K E m

(593) au pj j ^ \ ;jc q V j8;V joncfu}_8; qn}8n B

(594) byq D _q a_ m E pb}qocycc iiiiiiii D K doK ncf \ _ E pJb}_o yc c iiiii K 'h*