- Email: [email protected]
Lifetimes and Mixing at DØ
Nuclear Physics B (Proc. Suppl.) 142 (2005) 153–158 www.elsevierphysics.com
!#"%$'&)( *+&-,.)/0.1,#*32 $547698+&;:<$'=)*+>@? 8A?CBD= $FE9GH,I83>J>K*A:<8+"L*MB%NJ83& 6OEP$5Q)*A"DBDR0$'&SBT8A?VUW=X4Y2DN[Z52'\Y!#"D8M]T&-^_&)NJ`3$'"L2 NJB4 U .bac.Y!I8ed 5fAgSh \YUW"%8M`XN[( $'&)Z'$+. iTj#kSlAm lY\X^n o p;qr+sqLtuqLvMwxsqLtuySz{wtC|5vF}V~XOAs|OvFzb{Kq%wb9qLtC5vX9{ +bvSTy3tu@v3_zJsOqIt59rSzbqLt|5)tubvS5z@q#5vS93by3|Ov93'w TL|OzbzbqL%wqLM w~Sq__ 3q%wqLDw|5s|5rYq%s 'wbv3ww~SqSq%s9bz@57VR$'´ 2D8+&¯2D4X2 BD$5R2_=)*e`3$9= N[2 BD83"DNKZ'*+>J>[4>[$5(;B%8Q "%8A?µ83° &)(;N[&Y´ 2DNJ²3=SB%2 N[&3B%8Q =X4X2DNKZ'2V*MBW$5& $'"%²+4c2DZ5*A>[$52CNJ&1*+Z'Z'$52%2 N[: >[$#BD8 Q)*+" B%N[Z'>J$W*3Z'Z'$'>[$'"L*MBD83"%25. ¶= $(YNK2%Z8M`+$5"D4T8+?YRNJdYNJ&)²_*A&)( ,#UH`SN[8+>K*MB%NJ83&·N[&·BD=)$& $5°YBD"L*A>#¸M*A83&¹2 4Y2 BD$5R»º '¼ >[$5( /83:)*e43*32 = N<*A&)(-®½*32 ¸M*e]*9B%8Q)"D$O(YN[ZBTBD= $9$'dYN[2 BD$5&)Z$ 8+?V*BD= N["%(¯±1*e`+83"_²+$5& $'"L*MB%NJ83&º l ¼ ._¶= $(YN[2%Z8M`3$'"%478A? R0NJdXN[& ²NJ&BD=)$¾¿2D4X2 BD$5R ²3*e`3$_BD=)$À1"%2 B#N[&)(YNKZ'*ABDN[8+& B%=)*MB9B%= $0BD83QÁS°)*+"D¸ÂN[29Rc°)ZL=Ã= $5*e`XN[$'"BD=1*A&ÃBD= $Ä :<832D8+&ź hA¼ .7ÆCN[&)*A>[>[4+\CRNJdYNJ&)²;N[&)(Y°1Z$5(¹,#UÇ`XN[8+>K*MBDN[8+& R0$5*32 °)"D$5R$5&SB%2 N[&FB%= $I¾ ¿ 2 4Y2 BD$'RÈ=)*e`3$VQ "%$5ZNK2D$'>[4(Y$'´ B%$'"%RN[& $O(B%= $_Q =1*+2D$T8A?K*MB%NJ& ²B%8+QÁS°)*A"%¸ Z'8+° Q >[N[& ²¹o_"%²1ÉËÊ Ì ¿eÍÂÎ l gXÏ º g \{Ð ¼ .H¶= NK2R8+BDN[`M*MBD$O2 B%= $2 BD°)( 48+?xR0N@dYN[& ²N[&B%= $¾Ñ2D4X2 BD$5R-. oǾÑ#RNJdX´ N[& ²¯R0$5*32 ° "%$'R0$5&3B*+>J>[8M]_29*¯Q "%$5Z'N[2D$7(Y$'BD$'"%R0NJ&1*MBDN[8+& 8+?YBD= $R*A²3& N@B%°)(Y$I8A? B%= $P,#U½`XNJ83>[*ABDN[& ²_B%8+QZ8+°)Q >JN[& ² B%= "D83° ²+=³BD=)$7"%*ABDN[8·Ò Ê)Ì ¿AÓ Ê)ÌÑMÒª*+&)(ÃR0*e4³>J$O*+(³BD8-B%= $ (YNK2%Z8M`+$5"D408+?C& $5] Q =X4Y2DN[Z52NJ&½ÔTÕÖB%"%*+&)2 NJBDN[8+&129º × ¼ . تNJ?µ$B%NJR0$ÙR0$5*32 ° "%$'R0$5&3BL2Å8A?Ú`M*A"%NJ83°)2ÛÔÜ=)*+(Y"%8+& 2DQ1$OZN[$52*+"D$;N[( $5*A>P>[*+:183"%*ABD8+"%N[$52?µ8+"72D$'Q)*+"%*ABDN[& ²ÂB%= $ ]#$5*+¸Ã*+&)(¹2 BD"%8+& ²³(Y4X&)*AR0NKZ'2c8A?P= $O*e`X4Ã=1*+(Y"%8+&·(Y$'´ Z5*e4+.i_*MB%NJ8S2T8A?V>[N@?µ$'BDN[R$O2P:<$B]#$'$5&½(YNJÝ<$5"D$5&3B=)*+(Y"%8+& 2DQ1$OZN[$52*A"%$NJ&)2D$'&12 NJBDN[`+$cBD8Â,#/9®ÞQ =X4X2DNKZ'2*A&)(ÂQ "%8A´ `XNK(Y$Â*·(YN["%$5ZB;R0$5*+2D° "%$'R0$'&SB8+?9= NJ²3= $'"8+"L(Y$'"*A&)( & 83&7Q<$'"DBD° "%:)*MB%NJ`3$Z'8+"%"D$OZBDN[8+&12VBD88+Q<$'"L*MB%8+"IQ "D8Y(Y°1ZB $'dXQ1*A&)2DNJ83&)2º × ¼ .ßo_>K2D8)\R0$5*+2D° "%$'R0$'&SBL28+?B%= $·¾Ñ >[N@?µ$'BDN[R0$9°)2 N[& ²(Y$OZ'*e4Y2IBD8,#Uà$'N[²+$'&12BL*MBD$O2R0$5*+2D° "%$52 B%= $#¾ÑVR0NJdYNJ& ²Q)*+"%*+R$'BD$5" áâÑ Ó âÑV]T= N[ZL=0*+2C2 B%*MB%$5( *+:18M`3$Q "%8+:<$52 & $5]¹Q =X4Y2DN[Z52 NJ&ÔTÕÖ#BD"L*A&12 NJBDN[8+&)2º × ¼ . ¶= $ÈEGã±1*e`+83"äQ =X4Y2DN[Z52äQ)"D83²+"L*ARå?µ8XZ'°)2D$52Å8+& 0920-5632/$ – see front matter © 2005 Published by Elsevier B.V. doi:10.1016/j.nuclphysbps.2005.01.027
BD= $½2 BD"%$'& ²+BD=)208+?B%= $½E9Gæ(Y$'BD$OZBD83"5ç½è8X8Y(äBD"L*+ZL¸S´ NJ& ²1\0`+$'"DBD$'dYNJ& ²1\cRc° 8+&éN[( $'&SBDNJÀ1Z'*ABDN[8+&ª\*+&)(é2DN[& ²+>[$ *A&)(ä(YNJRc° 8+&¹BD"%NJ²3²+$5"DN[& ²ÂZ5*AQ)*+: NJ>[NJBDN[$525.·¶= N[2*A>[>[8M]_2 °)2BD8äZ'8+>[>J$OZB;>[*+"D²3$½2D*+RQ)>J$O28+?2 $5RN[>[$'QYB%8+& NKZÂ*+&)( ÔÕëê ÓMìí (Y$OZ'*e4Y2CBD=1*MB#*+"D$TNK(Y$O*A>)2%*AR0Q >[$52W?µ8+"WR0NJdS´ NJ& ²-*A&1(½>[N@?µ$'BDN[R$72 BD°1(YNJ$O2'.F®½8+"%$(Y$'B%*+NJ>[$5(ÂNJ&Y?µ83"DR*A´ BDN[8+& 83&ÛBD=)$³"%$52D° >JB%2Q "D$O2 $5&SBD$5(îNJ& BD= NK2;Q)*AQ<$'"-*A"%$ *e`e*+NJ>K*A:)>J$N[&;"%$?.ªº{ï ¼ . ¶= $·E9Gð(Y$B%$5ZB%8+"¯NK2½*à²+$5& $'"L*A>Q ° "%Q<832D$2DQ<$5Z´ BD"%8+R0$B%$'"9*A&)(³Z'*+>J83"DN[R0$BD$5"5.c,I=1*A"%²+$5(½Q)*A"DBDNKZ>[$52*A"%$ "D$OZ8+&12B%"D°)ZBD$O(Ú°)2DNJ& ²Ã*³2DN[>JNKZ83&·`+$5" B%$dBD"L*+ZL¸3$'"*+&)( *·2DZ'NJ&SB%NJ>[>[*ABDN[& ²ÚÀ):<$'"BD"L*+ZL¸3$'">[8XZ5*MB%$5(ÅN[&)2 NK(Y$Ã*Ú2 °Y´ Q1$5"%Z'8+&)(Y°1ZBDN[& ²Ã2 83>J$5& 8+NK(ÚZ83NJ>IBD=)*ABcQ "%8M`XN[( $52*³l½¶ R0*+²+& $'BDNKZ;À)$'>K( . U= 8AB%8+&)2*+&)(à$'>[$5ZBD"%8+&)2*+&)(³ñ$B%2 *A"%$"%$5Z'8+&)2 BD"%°)ZB%$5(¹°)2 N[& ²Ú*³>JNKÁS° N[(Å*+"D²38+&<òM° "%*+& N[° R Z'*A>[8+"%N[R$'BD$5"_*A&)(¯2%ZN[&SBDN[>J>K*MB%NJ& ²72 BD"%N[Q;Q)"D$'´2D= 8M]#$'"T(Y$´ BD$5ZBD83"%29>[8YZ'*ABD$5(83°YB%2DNK(Y$0BD= $2 83>J$5& 8+NK( .-®¯° 8+&12F*A"%$ "D$OZ8+&12B%"D°)ZBD$O(½°)2DNJ&)²;*-2DQ1$OZBD"%8+R0$'BD$'"Z83&)2DN[2 BDN[& ²;8A? R0*+²+& $'BDN[ó'$O(7N["D83&BD83"D83N[( 2I*A&)(7BD= "%$'$2 °)Q1$5"I>K*e4+$5"%28A? Q "D83Q183" B%NJ83&)*A>ABD° :<$52C*A&)(Q)>[*32B%N[Z B%"DN[²+²3$'"ª2%ZN[&SBDN[>J>K*MB%8+"L2 >J8YZ'*ABD$O(83°YB%2DNK(Y$BD= $FZ5*A>[8+"%NJR0$B%$'"O. ¶= $EGÛBD"%NJ²3²+$5"CNK2V:)*32 $O(8+&*BD= "%$'$B%NJ$5"2 4Y2 BD$5R;. ¶= $>[$'`3$'> *A&)(äl¯R°)8+&BD"%N[²+²+$5"%2F"D$5>J48+&Ú$5& $'"%²+4 (Y$'Q<832DN@B%$5(ÂNJ&¯B%= $Rc° 8+&³2 Q<$5ZBD"%8+R0$B%$'"*+&)(-?*32B"D$'´ Z8+&12B%"D°)ZBDN[8+&½8+?R°)8+&¯B%"%*3ZL¸X25.¶=)$c>[$'`3$'> h BD"%N[²+²+$5" Q1$5" ?µ83"DR2?*+2 B"D$OZ83&)2B%"D°1ZBDN[8+&ä8A?BD= $¯$5&3B%NJ"%$-$'`3$'&SB *A>[>J8M]TN[& ²;?µ8+"FN[&X`M*A"%N[*+&3B9R*+2%29*A&1(³N[R0Q)*+ZBQ)*+"%*+R$'´ BD$'"P"D$OÁ3°)NJ"%$'R0$'&SBL2?µ83"TQ)*A"DBDNKZ°)>[*+"À)&)*A>ª2 B%*ABD$O2'.
154
B.C.K. Casey / Nuclear Physics B (Proc. Suppl.) 142 (2005) 153–158
ô ¢õIö÷S¥5ø¹÷Sù«Cù5¤ú ÔÕÞê Óeìíüû ¤Cý þTÿ ¥OýY¥5÷Xù ,#*A&)(YNK( *ABD$ê Óeì R0$52D8+&12T*A"%$?µ83"DR0$O(:X4;Z8+Rc: N[&Y´ NJ&)²TB]I8T83Q Q<832DN@B%$'>[4ZL=)*+"D²3$5(R° 83&9Z'*A&1(YN[()*MBD$O2'.Va& $ R° 83&0N[2 "%$5ÁS° N["D$O(9B%8=1*e`+$*]#$'>[>YR0$5*32 ° "%$5(BD"L*+ZL¸9N[& :18+BD=B%= $_Rc° 8+&2DQ1$OZBD"%8+R0$'BD$'"I*A&)(0Z$5&SBD"L*A>YB%"%*3ZL¸SN[& ² 2 4Y2 BD$5R;.9¶= $02D$5Z83&)(¯NK2*A>[>J8M]#$5(;B%8:<$0*Z'*+>J83"DN[R0$´ BD$5"7®¯jU *+2%2 8YZNK*MB%$5(¹]TN@B%=à*ZL=)*+"D²3$5(B%"%*3ZL¸<.à¶= NK2 >J$O*+( 2B%8;*-2%*AR0Q >[$c8+? l R0NJ>[>[NJ83&¹ê Óeì R0$52D8+&12N[& *·l+l3нQ : ( *AB%*2 $'B5.Ü,#*+&)(YNK( *MB%$ÂÔ7=)*3(Y"%8+&)20*A"%$ "D$OZ83&)2B%"D°1ZBD$O(:X4Z'8+Rc: NJ&)NJ& ²½BD= $Âê ÓMì ]TNJBD=·8+BD= $5" ZL=)*A"%²+$O(·Q)*+" B%N[Z'>J$O20NJ&àB%= $0ñ$B*32D2D8YZNK*MBD$O(¹]TNJBD=àB%= $ ê Óeì .WÆCN[&)*A>2BL*MBD$O2]TN@B%=;2DN[RN[>K*A"BD83Q183>J83²+N[$522D°)ZL=;*32 *A&1( 8+" Â*A&)( F*+"D$9*+&)*A>[4Xó'$5(;N[&-Q)*AN["%2#B%8 = $'>[Q¯Z83&3B%"D83>ª2 4Y2 BD$5R0*ABDNKZ'29º fM¼ . ¶= $ >[N@?µ$'BDN[R$¯=1*+2:1$5$'&àR0$5*+2D° "%$5(¹:S4ä2 $5`+$'"D´ *A>$dYQ1$5"DN[R0$'&SB%2°)2DNJ& ²ä2 $5RN[>[$'QYB%8+& NKZ½(Y$OZ'*e4Y274XN[$'>K(X´ NJ&)²c*9]#8+"%>[(0*e`3$'"L*A²+$`M*A>[° $2 N[²+& NJÀ1Z5*A&SBD>[4>[8M]I$5"VBD=1*A& BD= $0¾ ¿ >[NJ?µ$BDN[R0$;º m ¼ .nYNJ&)Z'$FB%= $FÀ)&1*A> 2BL*MBD$c]#*32_& 8+B ?µ° >[>J4-"%$5Z83&)2 BD"%°)ZB%$5(-N[&-BD= $O2 $cR$O*+2D° "%$'R0$'&SB%25\YB%= $'"%$ *A"%$c°)&)Z$5" BL*AN[&3B%NJ$O2(Y° $BD8BD= $0"%$5Z'8+&)2 BD"%°)ZB%$5(¯:<8X832 B 8A?TB%= $ *+&)(B%= $Q °)"DNJB48A?BD= $;N[& N@B%N[*+>#2 B%*ABD$3.Âo ²+8S*A> 8+?JNJ?µ$B%NJR0$F°12 N[& ²?µ° >J´ >J4³"D$OZ83&)2B%"D°1ZBD$O(³( $5Z'*e4Y2BD8;B%= $-ê Óeì À)&)*A>W2 B%*ABD$3. a° "-ê Óeì N[&X`M*A"%N[*+&3B0R*+2%20(YN[2 BD"%N[: °YBDN[8+&äN[22D= 8M]T& NJ&¯ÆCN[²+° "%$ . ³$8+:12 $5"D`3$Ð+l Oh $'`3$'&SB%2#N[&83° " l+l3ÐQ): ()*MB%*¯2D$BO.¶= $7Z'8+"%"D$O2 Q<8+&)( NJ& ²¯2DNJ²3&)*A>VN[& BD= $¾¿ÕÞê Óeì ZL=)*+& & $'>)N[2I*A>K2 892D= 8M]T&ÆN[²+°)"D$ . ³$83:)2D$'"%`+$ h ïAÐÛlAm;¾¿0Z5*A&)( N[( *ABD$O2N[&ÃBD= $2%*AR0$ ( *MBL*2 $'B5. oî2 N[R°)>@BL*A& $58+°)2 À)BBD8FBD= $>JNJ?µ$B%NJR0$*+&)(0Q<8+>K*A"%NJóO*M´ BDN[8+&·*+RQ)>JNJBD°)( $52FN[&BD=)$¾ÑÕåê ÓMì äZL=)*A& &)$'>IZ5*A& :1$°12 $O(¯BD8-R0$5*32 °)"D$áâÑ Ó âCÑ7º × ¼ .cÆCN[²+° "%$0l2D= 8M]_2 BD= $ê Óeì ¯N[&X`e*+"DNK*A&SB#R0*32D2(YNK2 BD"%NJ: ° BDN[8+&?µ8+"T¾ÑPZ'*+&Y´ (YNK( *MB%$52T*A&1(7B%= $ê ÓMì N[&X`e*+"DNK*A&SB#R0*32D2(YNK2 BD"%NJ: ° ´ BDN[8+&Â?µ8+"¾ ¿ Z'*+&)(YNK( *MB%$525. Ã$83:)2 $5"D`3$ g k h h+f ¾Ñ Z'*+&)(YNK( *MB%$520*A&)( 5f Ð3ïÇïAl³¾ ¿ Z5*A&)(YNK( *ABD$52cN[&ä83° " l+l3ÐQ): ( *AB%*02D$B5. ³$$dXB%"%*3ZBT>JNJ?µ$B%NJR0$O2T:X4Q<$'"D?µ8+"%RN[& ²0*cÀ BTBD80B%= $ BD"L*A&)2D`+$5"%2D$9Q "%8+Q<$'"P±)NJ²3=SB>[$'& ²+BD=Â(YNK2 BD"%NJ: ° BDN[8+&ª.¶= $ 2 N[²+&1*A>K2Ú*A"%$àR08Y(Y$5>J$O( *+2$dYQ<8+& $5&SBDNK*A>K2ÚZ8+&X`38+>[`+$5( ]TN@B%=Çè*+°)2D2DNK*A&Û"%$52D8+>[°YBDN[8+&Å?µ° &1ZBDN[8+&12'. ¶= $Â:1*+ZL¸S´ ²+"%8+° &1( 2 *A"%$IR08Y(Y$'>[$5(*+2Vè*+°)2D2DNK*A&F"%$52D8+>[°YBDN[8+&?µ° &)Z´ BDN[8+&)2C?µ83" BD= $Q "%8+R0QYBWZ'8+R0Q183& $'&SBL2V*A&)(c$dYQ<8+& $5&3B%N[*+> B%*+NJ>K2F?µ83"= $O*e`X4½±1*e`38+"Z'8+R0Q183& $'&SBL2'.¯ju&·R08S2BcZ5*+2 ´ $525\XB]I80(YN[R0$'&)2DNJ83&)*A><À BL2T*A"%$*+Q Q >[NJ$O(N[&)Z'>J°)( NJ& ²B%= $ NJ&X`M*A"%NK*A&SBR*+2%22DQ1$OZB%"D° R B%8³Z83&)2 BD"L*AN[&BD= $;2 N[²+&)*+>
D∅ Run II Preliminary, Luminosity =225pb
40
Λ b → J/ ψ + Λ
35
N = 52 ± 13
-1
30 25 20 15
10
5 0
250
200
5.2
B0d
$
# "
5.4
→ J/ ψ +
!
5.6
5.8
6
6.2 GeV/c 2 -1
D∅ Run II Preliminary, Luminosity = 225 pb
K 0s
N = 375 ± 29
150
100
50
0
4.9
5
5.1
5.2
5.3
5.4
5.5
5.6
5.7 2 GeV/c
ÆCN[²+° "%$ ._¶= $&%Éuê Óeì Í (YN[2 BD"%N[: °YBDN[8+&-?µ83" Z5*A&Y´ ( N[( *ABD$O2ɵBD8+Q Í *+&)(0BD=)$'%Éuê Óeì ( Í (YNK2B%"DN[: °YB%NJ83&7?µ8+" ¾ ¿ Z5*A&)( N[( *ABD$O29ɵ:<8AB B%8+R Í . B%8F:)*3ZL¸S²3"D83° &)(F?µ"%*3ZBDN[8+&12V*A&)(:)*3ZL¸S²3"D83° &)(cQ)*A"L*AR0$'´ B%$'"%NJóO*MB%NJ83&)2'._oP&¯$d *AR0Q >[$(YNK2 BD"%NJ: ° BDN[8+&½NK2P2D= 8M]T&¯N[& ÆCN[²+° "%$ h ?µ83"WBD=)$_NJ&1Z>[°)2 N[`+$_BD= $P¾*)Õüê Óeì +)½À1&)*A> 2 B%*ABD$3.0¶=)$>JNJ?µ$B%NJR0$529?µ8+"92 $5`+$5"%*+>VÔ=)*3(Y"D83&³2DQ1$OZN[$52 ( $BD$5"DR0N[& $5(Å°12 N[& ² Î l+kÃQ : *A"%$;>[NK2B%$5(àNJ&î¶C*M´ :)>J$ .F¶= $O2 $c"D$O2 °)>@BL2*+"D$cNJ&³²+8X8Y(½*A²3"D$5$'R0$'&SB]TN@B%= B%= $9]#8+"%>[(;*e`+$5"%*+²+$P`M*+>J° $O29º m ¼ .
,x¢õöË÷S¥Oø·÷Xù«ùO¤Cú·ÿª÷Xø·þ÷.-¥O¨1¤C¬0/;÷X¬+ý21ªù Ã$³NK(Y$'&SB%N@?µ4î2D$'R0N[>J$5QYBD83& N[Z³(Y$5Z5*e4Y27:X4Å"D$OÁ3°)NJ"%NJ&)²
B%= $9Q "%$52D$'&)Z'$8A?C*Rc° 8+&;"D$OZ83&)2B%"D°1ZBD$O(N[&;BD= $9Z'$'&Y´ B%"%*+>BD"L*+ZL¸XN[& ²à2D4Y2B%$'R *+&)( BD= $ÚRc° 8+&È2 Q<$5ZBD"%8+R0$´ B%$'"]TNJBD=äBD"L*A&)2D`+$5"%2D$7R08+R0$5&3B%° R4365ܲ3"D$O*MB%$'"cBD=)*+& lÂè$87 :Ó 9 *A&)(ÃB%8ABL*A>WR08+R0$5&3B%° R;3·²+"%$5*ABD$'"B%=)*A& h è$<7 :Ó 9 . ³$?µ8+"%R *c2D*+R0Q >J$$'& "%NKZL= $5(0]TNJBD=;¾=)Ú*A&1( ¾¿0(Y$OZ'*e4Y2P:X4¯"%$5ÁS° N["DN[& ²BD= $0Q "%$52D$'&)Z'$8+?#*?A>@ 0*32´ 2D8YZNK*MB%$5(0]TNJBD=B%= $_R°)8+&ª. ¶= $BA>@ _N[2"D$OZ83&)2B%"D°1ZBD$O( N[&îB%= $)DC ZL=)*+& & $5>P?µ"%8+RëBD"L*+ZL¸Y2NJ& BD= $2D*+R0$
155
B.C.K. Casey / Nuclear Physics B (Proc. Suppl.) 142 (2005) 153–158 -1
G F E
B0s → J/ψ + φ
140
10
120
N = 403 ± 28
100
+
B Lifetime Events/ 40 µm
Events / 20 MeV
D0 RunII preliminary. Luminosity ~ 225 pb 160
D∅ data Total Fit B+ signal Background
3
λ B + = 495 ± 25 µm (stat) +29/-37 (syst)
10
2
D∅ Run II Preliminary
80 60
10
40 20 0 5
5.1
5.2
5.3
5.4
5.5
5.6
5.7 2 Mass Gev/c -1
JI H
Events /20 MeV
D0 RunII preliminary. Luminosity ~ 225 pb 700
1
-0.05
0
0.05
0.1
0.15
0.2
0.25
0.3 cm
Bd0 → J/ψ + K*
600
N = 1857 ± 72
500 400 300
ÆN[²+°)"D$ h .V¶= $9"%$5Z'8+&)2 BD"%°)ZBD$5(Q "%8+Q<$'"T(Y$5Z5*e4>J$5& ²AB%= (YN[2 BD"%N[: °YBDN[8+&;?µ83"_¾=)ÚÕëê Óeì )¹Z5*A&)( N[( *ABD$O2'.
200 100 0 4.9
5
5.1
5.2
5.3
5.4
5.5
5.6
5.7 5.8 2 Mass GeV/c
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¶ *+: >J$ UW"%$'>[NJR0N[&)*A"%4E9GÇ>[N@?µ$'BDN[R0$"%$52D° >JB%2?µ8+"_Ô=)*3(Y"%8+&)2°)2´ NJ& ²À)&1*A> 2BL*MB%$52Z83&3BL*AN[& N[& ²*ê Óeì R0$52D8+&:1*+2D$5(783& BD= $ Î l+kQ : ( *AB%*02 $'B5. ®¯8Y(Y$ EG >JNJ?µ$B%NJR0$7ÉQ)2 Í ÔÕëê ÓMìí ÐA×3lY¹k k Oh ¹k k g Ð ×3ÐAk\¹k k f3h )] <<^^ `L_`bdac ¾ ) ÕÞê Óeì ) ¾ ¿ ÕÞê Óeì L Ð )e 88^^ L_f ·k l+k ¾ ¿ ÕÞê Óeì ÐA× )e 88^^ c`b`bg ·k Oh ¾ Ñ ÕÞê ì
m )e 88^^ _a ·k 5g
=¾ )T\*A&)(Çl2ZÞ¾ Ñ ?µ8+"BD= $h@X 2D*+RQ)>J$Ã*A&)( f 2l Z =¾ )T\ ×.Z ¾¿A\*A&)(Hl.Z»¾ Ñ ?µ8+"ÂBD= $i0>@ ä2%*AR0Q >[$+. èNJ`3$'& 8+° ">K*A"%²+$Å2 $5RN[>[$'QYB%8+& NKZÅ( *MBL*Ü2%*AR0Q >[$+\0]#$ ]TNJ>[>F:<$¹*A: >[$ÃBD8ÛQ<$'"D?µ8+"%R»R08+"%$Q "D$OZNK2 $R0$5*32 °)"D$'´ R$5&SB%28A? *A>[>ª2 $5R0NJ>[$'QYB%8+& NKZÔP(Y$OZ'*e4Y2#NJ&BD=)$&)$5*A"#?µ°Y´ BD° "%$+.oP29*+&³$'d *AR0Q >[$+\x]#$=)*e`+$:1$5²+° &Ú*-2 BD°)(Y4Â8A? í k )l:mÂ(Y$OZ'*e4Y2'.*³$7Z'>J$O*A"%>J4¯83:)2D$'"%`+$ ¾ßÕj@X Ce) BD= $n0>@ *+&)(oX>@ b L N[&SBD$5"DR0$5( N[*ABD$2 B%*ABD$52N[&BD= $@X Ce) NJ&X`M*A"%N[*+&SBR*32D2T(YNK2 BD"%NJ: ° BDN[8+&-2 = 8M]T&;N[&-ÆCN[²+° "%$FÐY. ¶= $ž (Y$5Z5*e4Ç`3$'"DBD$'dÈNK2Ã"D$OZ83&)2B%"D°1ZBD$O(ÙN[& BD=)$ BD"L*A&)2D`+$5"%2D$¯Q >K*A& $³:S4äÀ)"L2B;"D$OZ83&)2B%"D°1ZBDN[& ²B%= $ >@ `+$'"DBD$'d7*A&)($dXBD"L*AQ<8+>K*MB%NJ& ²FBD= $M0>@ R83R0$'&SBD° R `3$5Z´ BD8+"BD8N@BL2NJ&SBD$5"%2D$5ZBDN[8+&¯]TNJBD=ÂBD= $cR° 83&¯BD"L*+ZL¸¦.¶=)$ :18X832 BN[2"%$5Z'8+&)2 BD"%°)ZB%$5(Ú°12 N[& ²³BD= $;BD"L*A&12 `3$'"L2 $7R08+´ R$5&SBD° R8+?TBD= $p0>@ q k ) 2 4Y2 BD$5R ?µ"%8+R ]T= NKZL=·]#$
156
B.C.K. Casey / Nuclear Physics B (Proc. Suppl.) 142 (2005) 153–158
Events / 0.01 GeV/c
2
D* -π + invariant mass
0
523 ± 40 candidates
-1
100
DØ Run II Preliminary
*0 B → µ ν ( D1 , D2 ) X → µ ν D* π+ X
120
250 pb
80
60
40
20
r
0 2.2
DØ RunII Preliminary, Luminosity = 250 pb-1
2.3
2.4
2.5
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24944±750 D*-→D π
2000
0
0.14
0.145
0.15
r
0.155 0.16 –0 –0 M(D π)-M(D ) (GeV/c2)
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2.7 2.8 2 M D* - π+ (GeV/c )
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DØ RunII Preliminary, Luminosity = 250 pb-1
0
–0
2 χ /NDF = 4.0/5
0.35
*
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µ+ D π+
N(µD X)/N(µD X)
ss rr
µ+ D π-
4000
2.6
0.3
0.25
0.2
0.15 -0.1
0
0.1
0.2 0.3 0.4 Visible Proper Decay Length (cm)
CÆ N[²+° "%$Û× .ã¶= $Å"%*ABDN[8È8A?@ BD80>@ Û4XN[$'>K( 2N[& 2D$'R0N[>J$5QYBD83& NKZ;¾( $5Z'*e4Y20*+20*³?µ° &)ZBDN[8+&Å8A?BD= $¯`XNK2´ N[: >[$9Q "%8+Q<$'"_(Y$OZ'*e4>[$'& ²+BD=ª.
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157
B.C.K. Casey / Nuclear Physics B (Proc. Suppl.) 142 (2005) 153–158
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DØ Run II Preliminary Asymmetry=(N
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158
B.C.K. Casey / Nuclear Physics B (Proc. Suppl.) 142 (2005) 153–158
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BD= $½2 BD"%$'& ²+BD=)208+?B%= $½E9Gæ(Y$'BD$OZBD83"5ç½è8X8Y(äBD"L*+ZL¸S´ NJ& ²1\0`+$'"DBD$'dYNJ& ²1\cRc° 8+&éN[( $'&SBDNJÀ1Z'*ABDN[8+&ª\*+&)(é2DN[& ²+>[$ *A&)(ä(YNJRc° 8+&¹BD"%NJ²3²+$5"DN[& ²ÂZ5*AQ)*+: NJ>[NJBDN[$525.·¶= N[2*A>[>[8M]_2 °)2BD8äZ'8+>[>J$OZB;>[*+"D²3$½2D*+RQ)>J$O28+?2 $5RN[>[$'QYB%8+& NKZÂ*+&)( ÔÕëê ÓMìí (Y$OZ'*e4Y2CBD=1*MB#*+"D$TNK(Y$O*A>)2%*AR0Q >[$52W?µ8+"WR0NJdS´ NJ& ²-*A&1(½>[N@?µ$'BDN[R$72 BD°1(YNJ$O2'.F®½8+"%$(Y$'B%*+NJ>[$5(ÂNJ&Y?µ83"DR*A´ BDN[8+& 83&ÛBD=)$³"%$52D° >JB%2Q "D$O2 $5&SBD$5(îNJ& BD= NK2;Q)*AQ<$'"-*A"%$ *e`e*+NJ>K*A:)>J$N[&;"%$?.ªº{ï ¼ . ¶= $·E9Gð(Y$B%$5ZB%8+"¯NK2½*à²+$5& $'"L*A>Q ° "%Q<832D$2DQ<$5Z´ BD"%8+R0$B%$'"9*A&)(³Z'*+>J83"DN[R0$BD$5"5.c,I=1*A"%²+$5(½Q)*A"DBDNKZ>[$52*A"%$ "D$OZ8+&12B%"D°)ZBD$O(Ú°)2DNJ& ²Ã*³2DN[>JNKZ83&·`+$5" B%$dBD"L*+ZL¸3$'"*+&)( *·2DZ'NJ&SB%NJ>[>[*ABDN[& ²ÚÀ):<$'"BD"L*+ZL¸3$'">[8XZ5*MB%$5(ÅN[&)2 NK(Y$Ã*Ú2 °Y´ Q1$5"%Z'8+&)(Y°1ZBDN[& ²Ã2 83>J$5& 8+NK(ÚZ83NJ>IBD=)*ABcQ "%8M`XN[( $52*³l½¶ R0*+²+& $'BDNKZ;À)$'>K( . U= 8AB%8+&)2*+&)(à$'>[$5ZBD"%8+&)2*+&)(³ñ$B%2 *A"%$"%$5Z'8+&)2 BD"%°)ZB%$5(¹°)2 N[& ²Ú*³>JNKÁS° N[(Å*+"D²38+&<òM° "%*+& N[° R Z'*A>[8+"%N[R$'BD$5"_*A&)(¯2%ZN[&SBDN[>J>K*MB%NJ& ²72 BD"%N[Q;Q)"D$'´2D= 8M]#$'"T(Y$´ BD$5ZBD83"%29>[8YZ'*ABD$5(83°YB%2DNK(Y$0BD= $2 83>J$5& 8+NK( .-®¯° 8+&12F*A"%$ "D$OZ8+&12B%"D°)ZBD$O(½°)2DNJ&)²;*-2DQ1$OZBD"%8+R0$'BD$'"Z83&)2DN[2 BDN[& ²;8A? R0*+²+& $'BDN[ó'$O(7N["D83&BD83"D83N[( 2I*A&)(7BD= "%$'$2 °)Q1$5"I>K*e4+$5"%28A? Q "D83Q183" B%NJ83&)*A>ABD° :<$52C*A&)(Q)>[*32B%N[Z B%"DN[²+²3$'"ª2%ZN[&SBDN[>J>K*MB%8+"L2 >J8YZ'*ABD$O(83°YB%2DNK(Y$BD= $FZ5*A>[8+"%NJR0$B%$'"O. ¶= $EGÛBD"%NJ²3²+$5"CNK2V:)*32 $O(8+&*BD= "%$'$B%NJ$5"2 4Y2 BD$5R;. ¶= $>[$'`3$'> *A&)(äl¯R°)8+&BD"%N[²+²+$5"%2F"D$5>J48+&Ú$5& $'"%²+4 (Y$'Q<832DN@B%$5(ÂNJ&¯B%= $Rc° 8+&³2 Q<$5ZBD"%8+R0$B%$'"*+&)(-?*32B"D$'´ Z8+&12B%"D°)ZBDN[8+&½8+?R°)8+&¯B%"%*3ZL¸X25.¶=)$c>[$'`3$'> h BD"%N[²+²+$5" Q1$5" ?µ83"DR2?*+2 B"D$OZ83&)2B%"D°1ZBDN[8+&ä8A?BD= $¯$5&3B%NJ"%$-$'`3$'&SB *A>[>J8M]TN[& ²;?µ8+"FN[&X`M*A"%N[*+&3B9R*+2%29*A&1(³N[R0Q)*+ZBQ)*+"%*+R$'´ BD$'"P"D$OÁ3°)NJ"%$'R0$'&SBL2?µ83"TQ)*A"DBDNKZ°)>[*+"À)&)*A>ª2 B%*ABD$O2'.
154
B.C.K. Casey / Nuclear Physics B (Proc. Suppl.) 142 (2005) 153–158
ô ¢õIö÷S¥5ø¹÷Sù«Cù5¤ú ÔÕÞê Óeìíüû ¤Cý þTÿ ¥OýY¥5÷Xù ,#*A&)(YNK( *ABD$ê Óeì R0$52D8+&12T*A"%$?µ83"DR0$O(:X4;Z8+Rc: N[&Y´ NJ&)²TB]I8T83Q Q<832DN@B%$'>[4ZL=)*+"D²3$5(R° 83&9Z'*A&1(YN[()*MBD$O2'.Va& $ R° 83&0N[2 "%$5ÁS° N["D$O(9B%8=1*e`+$*]#$'>[>YR0$5*32 ° "%$5(BD"L*+ZL¸9N[& :18+BD=B%= $_Rc° 8+&2DQ1$OZBD"%8+R0$'BD$'"I*A&)(0Z$5&SBD"L*A>YB%"%*3ZL¸SN[& ² 2 4Y2 BD$5R;.9¶= $02D$5Z83&)(¯NK2*A>[>J8M]#$5(;B%8:<$0*Z'*+>J83"DN[R0$´ BD$5"7®¯jU *+2%2 8YZNK*MB%$5(¹]TN@B%=à*ZL=)*+"D²3$5(B%"%*3ZL¸<.à¶= NK2 >J$O*+( 2B%8;*-2%*AR0Q >[$c8+? l R0NJ>[>[NJ83&¹ê Óeì R0$52D8+&12N[& *·l+l3нQ : ( *AB%*2 $'B5.Ü,#*+&)(YNK( *MB%$ÂÔ7=)*3(Y"%8+&)20*A"%$ "D$OZ83&)2B%"D°1ZBD$O(:X4Z'8+Rc: NJ&)NJ& ²½BD= $Âê ÓMì ]TNJBD=·8+BD= $5" ZL=)*A"%²+$O(·Q)*+" B%N[Z'>J$O20NJ&àB%= $0ñ$B*32D2D8YZNK*MBD$O(¹]TNJBD=àB%= $ ê Óeì .WÆCN[&)*A>2BL*MBD$O2]TN@B%=;2DN[RN[>K*A"BD83Q183>J83²+N[$522D°)ZL=;*32 *A&1( 8+" Â*A&)( F*+"D$9*+&)*A>[4Xó'$5(;N[&-Q)*AN["%2#B%8 = $'>[Q¯Z83&3B%"D83>ª2 4Y2 BD$5R0*ABDNKZ'29º fM¼ . ¶= $ >[N@?µ$'BDN[R$¯=1*+2:1$5$'&àR0$5*+2D° "%$5(¹:S4ä2 $5`+$'"D´ *A>$dYQ1$5"DN[R0$'&SB%2°)2DNJ& ²ä2 $5RN[>[$'QYB%8+& NKZ½(Y$OZ'*e4Y274XN[$'>K(X´ NJ&)²c*9]#8+"%>[(0*e`3$'"L*A²+$`M*A>[° $2 N[²+& NJÀ1Z5*A&SBD>[4>[8M]I$5"VBD=1*A& BD= $0¾ ¿ >[NJ?µ$BDN[R0$;º m ¼ .nYNJ&)Z'$FB%= $FÀ)&1*A> 2BL*MBD$c]#*32_& 8+B ?µ° >[>J4-"%$5Z83&)2 BD"%°)ZB%$5(-N[&-BD= $O2 $cR$O*+2D° "%$'R0$'&SB%25\YB%= $'"%$ *A"%$c°)&)Z$5" BL*AN[&3B%NJ$O2(Y° $BD8BD= $0"%$5Z'8+&)2 BD"%°)ZB%$5(¯:<8X832 B 8A?TB%= $ *+&)(B%= $Q °)"DNJB48A?BD= $;N[& N@B%N[*+>#2 B%*ABD$3.Âo ²+8S*A> 8+?
D∅ Run II Preliminary, Luminosity =225pb
40
Λ b → J/ ψ + Λ
35
N = 52 ± 13
-1
30 25 20 15
10
5 0
250
200
5.2
B0d
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5.6
5.8
6
6.2 GeV/c 2 -1
D∅ Run II Preliminary, Luminosity = 225 pb
K 0s
N = 375 ± 29
150
100
50
0
4.9
5
5.1
5.2
5.3
5.4
5.5
5.6
5.7 2 GeV/c
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B%= $9Q "%$52D$'&)Z'$8A?C*Rc° 8+&;"D$OZ83&)2B%"D°1ZBD$O(N[&;BD= $9Z'$'&Y´ B%"%*+>BD"L*+ZL¸XN[& ²à2D4Y2B%$'R *+&)( BD= $ÚRc° 8+&È2 Q<$5ZBD"%8+R0$´ B%$'"]TNJBD=äBD"L*A&)2D`+$5"%2D$7R08+R0$5&3B%° R4365ܲ3"D$O*MB%$'"cBD=)*+& lÂè$87 :Ó 9 *A&)(ÃB%8ABL*A>WR08+R0$5&3B%° R;3·²+"%$5*ABD$'"B%=)*A& h è$<7 :Ó 9 . ³$?µ8+"%R *c2D*+R0Q >J$$'& "%NKZL= $5(0]TNJBD=;¾=)Ú*A&1( ¾¿0(Y$OZ'*e4Y2P:X4¯"%$5ÁS° N["DN[& ²BD= $0Q "%$52D$'&)Z'$8+?#*?A>@ 0*32´ 2D8YZNK*MB%$5(0]TNJBD=B%= $_R°)8+&ª. ¶= $BA>@ _N[2"D$OZ83&)2B%"D°1ZBD$O( N[&îB%= $)DC ZL=)*+& & $5>P?µ"%8+RëBD"L*+ZL¸Y2NJ& BD= $2D*+R0$
155
B.C.K. Casey / Nuclear Physics B (Proc. Suppl.) 142 (2005) 153–158 -1
G F E
B0s → J/ψ + φ
140
10
120
N = 403 ± 28
100
+
B Lifetime Events/ 40 µm
Events / 20 MeV
D0 RunII preliminary. Luminosity ~ 225 pb 160
D∅ data Total Fit B+ signal Background
3
λ B + = 495 ± 25 µm (stat) +29/-37 (syst)
10
2
D∅ Run II Preliminary
80 60
10
40 20 0 5
5.1
5.2
5.3
5.4
5.5
5.6
5.7 2 Mass Gev/c -1
JI H
Events /20 MeV
D0 RunII preliminary. Luminosity ~ 225 pb 700
1
-0.05
0
0.05
0.1
0.15
0.2
0.25
0.3 cm
Bd0 → J/ψ + K*
600
N = 1857 ± 72
500 400 300
ÆN[²+°)"D$ h .V¶= $9"%$5Z'8+&)2 BD"%°)ZBD$5(Q "%8+Q<$'"T(Y$5Z5*e4>J$5& ²AB%= (YN[2 BD"%N[: °YBDN[8+&;?µ83"_¾=)ÚÕëê Óeì )¹Z5*A&)( N[( *ABD$O2'.
200 100 0 4.9
5
5.1
5.2
5.3
5.4
5.5
5.6
5.7 5.8 2 Mass GeV/c
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¶ *+: >J$ UW"%$'>[NJR0N[&)*A"%4E9GÇ>[N@?µ$'BDN[R0$"%$52D° >JB%2?µ8+"_Ô=)*3(Y"%8+&)2°)2´ NJ& ²À)&1*A> 2BL*MB%$52Z83&3BL*AN[& N[& ²*ê Óeì R0$52D8+&:1*+2D$5(783& BD= $ Î l+kQ : ( *AB%*02 $'B5. ®¯8Y(Y$ EG >JNJ?µ$B%NJR0$7ÉQ)2 Í ÔÕëê ÓMìí ÐA×3lY¹k k Oh ¹k k g Ð ×3ÐAk\¹k k f3h )] <<^^ `L_`bdac ¾ ) ÕÞê Óeì ) ¾ ¿ ÕÞê Óeì L Ð )e 88^^ L_f ·k l+k ¾ ¿ ÕÞê Óeì ÐA× )e 88^^ c`b`bg ·k Oh ¾ Ñ ÕÞê ì
m )e 88^^ _a ·k 5g
=¾ )T\*A&)(Çl2ZÞ¾ Ñ ?µ8+"BD= $h@X 2D*+RQ)>J$Ã*A&)( f 2l Z =¾ )T\ ×.Z ¾¿A\*A&)(Hl.Z»¾ Ñ ?µ8+"ÂBD= $i0>@ ä2%*AR0Q >[$+. èNJ`3$'& 8+° ">K*A"%²+$Å2 $5RN[>[$'QYB%8+& NKZÅ( *MBL*Ü2%*AR0Q >[$+\0]#$ ]TNJ>[>F:<$¹*A: >[$ÃBD8ÛQ<$'"D?µ8+"%R»R08+"%$Q "D$OZNK2 $R0$5*32 °)"D$'´ R$5&SB%28A? *A>[>ª2 $5R0NJ>[$'QYB%8+& NKZÔP(Y$OZ'*e4Y2#NJ&BD=)$&)$5*A"#?µ°Y´ BD° "%$+.oP29*+&³$'d *AR0Q >[$+\x]#$=)*e`+$:1$5²+° &Ú*-2 BD°)(Y4Â8A? í k )l:mÂ(Y$OZ'*e4Y2'.*³$7Z'>J$O*A"%>J4¯83:)2D$'"%`+$ ¾ßÕj@X Ce) BD= $n0>@ *+&)(oX>@ b L N[&SBD$5"DR0$5( N[*ABD$2 B%*ABD$52N[&BD= $@X Ce) NJ&X`M*A"%N[*+&SBR*32D2T(YNK2 BD"%NJ: ° BDN[8+&-2 = 8M]T&;N[&-ÆCN[²+° "%$FÐY. ¶= $ž (Y$5Z5*e4Ç`3$'"DBD$'dÈNK2Ã"D$OZ83&)2B%"D°1ZBD$O(ÙN[& BD=)$ BD"L*A&)2D`+$5"%2D$¯Q >K*A& $³:S4äÀ)"L2B;"D$OZ83&)2B%"D°1ZBDN[& ²B%= $ >@ `+$'"DBD$'d7*A&)($dXBD"L*AQ<8+>K*MB%NJ& ²FBD= $M0>@ R83R0$'&SBD° R `3$5Z´ BD8+"BD8N@BL2NJ&SBD$5"%2D$5ZBDN[8+&¯]TNJBD=ÂBD= $cR° 83&¯BD"L*+ZL¸¦.¶=)$ :18X832 BN[2"%$5Z'8+&)2 BD"%°)ZB%$5(Ú°12 N[& ²³BD= $;BD"L*A&12 `3$'"L2 $7R08+´ R$5&SBD° R8+?TBD= $p0>@ q k ) 2 4Y2 BD$5R ?µ"%8+R ]T= NKZL=·]#$
156
B.C.K. Casey / Nuclear Physics B (Proc. Suppl.) 142 (2005) 153–158
Events / 0.01 GeV/c
2
D* -π + invariant mass
0
523 ± 40 candidates
-1
100
DØ Run II Preliminary
*0 B → µ ν ( D1 , D2 ) X → µ ν D* π+ X
120
250 pb
80
60
40
20
r
0 2.2
DØ RunII Preliminary, Luminosity = 250 pb-1
2.3
2.4
2.5
–0 -
24944±750 D*-→D π
2000
0
0.14
0.145
0.15
r
0.155 0.16 –0 –0 M(D π)-M(D ) (GeV/c2)
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(YNK( *MB%$52FÉ:18+B BD83R Í .
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2.7 2.8 2 M D* - π+ (GeV/c )
ÆCN[²+° "%$7ÐY.0¶= $N%ÃÉT@X d)C Í N[&S`M*+"DNK*A&SBR0*32D29( N[2 BD"%N@´ :)°YBDN[8+&;?µ8+"_¾ Õ@X L í(k )ulvm;Z'*+&)(YNK( *MB%$525. ÆCN[²+° "%$×).#¶= $"D$O2 ° >JB%2_8A? BD= $* b À)B*A"%$98M`+$5"D>K*e4+$O( . ¶=)$9"D$O2 ° >JBDN[& ²0>[N@?µ$'BDN[R$"%*ABDN[8cNK2 x ɾ ) ÍDÓvx ɾ ¿eÍ Q k3m h ·k kSl ¹k k3l+l ]TNJBD=ß* b |Ó @A Q g k Ó Ð . ¶=)N[2ÅNK2àNJ& ²+8X8Y( *+²+"%$'$5R$5&SBx]TN@B%=FB%= $]#8+"%>[(9*e`3$'"L*A²3$V`e*+>J°)$8A? k f × k k ïº m ¼ .
DØ RunII Preliminary, Luminosity = 250 pb-1
0
–0
2 χ /NDF = 4.0/5
0.35
*
–0
µ+ D π+
N(µD X)/N(µD X)
ss rr
µ+ D π-
4000
2.6
0.3
0.25
0.2
0.15 -0.1
0
0.1
0.2 0.3 0.4 Visible Proper Decay Length (cm)
CÆ N[²+° "%$Û× .ã¶= $Å"%*ABDN[8È8A?@ BD80>@ Û4XN[$'>K( 2N[& 2D$'R0N[>J$5QYBD83& NKZ;¾( $5Z'*e4Y20*+20*³?µ° &)ZBDN[8+&Å8A?BD= $¯`XNK2´ N[: >[$9Q "%8+Q<$'"_(Y$OZ'*e4>[$'& ²+BD=ª.
¢0 ª¤ú«Cù5¤ú·ÿx÷Xø·þ÷2-C¥5¨<¤C¬ û ¤ý þTÿª¥5ýY¥O÷Sù
¶= $5"D$ *+"D$é?µ8+° "HR0*Añ8+"ÈN[& ²+"%$5(YN[$'&SBL2ÇBD8ßBDN[R0$´ ( $'Q<$'&)(Y$5&SBR0NJdXN[& ²ÃR0$5*+2D° "%$'R0$'&SBL2'.¶=)$À)"L2 BB]#8
157
B.C.K. Casey / Nuclear Physics B (Proc. Suppl.) 142 (2005) 153–158
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DØ Run II Preliminary Asymmetry=(N
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158
B.C.K. Casey / Nuclear Physics B (Proc. Suppl.) 142 (2005) 153–158
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