Search for V+A Current in Top Quark Decay in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV

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(1)Search for V+A Current in Top Quark Decay in p¯ p √ Collisions at s = 1.96 TeV A. Abulencia, J. Adelman, T. Affolder, T. Akimoto, M. G. Albrow, D. Ambrose, S. Amerio, D. Amidei, A. Anastassov, K. Anikeev, et al.. To cite this version: A. Abulencia, J. Adelman, T. Affolder, T. Akimoto, M. G. Albrow, et al.. Search for V+A Current √ p Collisions at s = 1.96 TeV. Physical Review Letters, American Physical in Top Quark Decay in p¯ Society, 2007, 98, pp.072001. �10.1103/PhysRevLett.98.072001�. �in2p3-00133633�. HAL Id: in2p3-00133633 http://hal.in2p3.fr/in2p3-00133633 Submitted on 27 Feb 2007. HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers.. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés..

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(45) 3{ bzIeUONK VzKmaKNMKXe1z &QcOj3ceUbcI M WZYlb"W"KNJLP>M o y4mQtmUPLy m1PdONy ¡ MP>m1PdQ[J Ó PLM Q[Jy mUQ[m1Kp° w eQcW"PdQtmUP>bzM o³IJ>m1PLJLj K 5 5³PLMkm1KNeQcOm1PLbcM y }mUQcpKNªZONP>KXM O ALCi oÇ cKXMKNeQtmUbce Q[e1m1bzM W"KXM y1PmUP>Kfy ^§b[mUQcJ. « M ONKNe1mUQ[PLMkm4 ÚAE Â Ú ÚE Ú(Ð ÚE Ú(Ð ÚE Ú ÚE Ú ÚE Ú ÚE ÚÜÂ ÚE ÚÜÂ ÚAE Â. Lepton+jets 1 b-tag. Likelihood. 15. Lepton+jets 2 b-tag Dilepton Combined. 10. 95% CL. 5. 0 -1.5. -1. Data (695 pb ) t t f V+A =-0.06 t t f V+A = 1.00 Background. 30 20 10 0 0. 10000. 2. 20000. 30000. M2lb (GeV /c 4). @F H. y %`n §qT?Y* XY89[1%,-89c5K1-89/4h@A/ ,á1-?*P79*.Y1-/ 40Gi*1-[i[-2 : .79*T8<1-? 2'[%894] 79*r~ 1B2 ] ]*NXt*61Nn\yY/ ,O QRNSl a( apKMK1-?* .Y,-/c2 cY8;798<1Zv8;[ po=n. ¡ M9m1 KFQ[H y1KNMOKxbc'Qý1PLcM QcJRsKuKX~QcJ>IQtm1KpQ[M9IGKNeJ>PLYlPm bzM Å I y1PLM Q QzKXy1PLQcMqQ[eUbzQzOE±^&K eUb[¨ JLK£JLP>jzKNJLP bkb"W¯IM O¢mUP>bzM±Pdy¨ eUy muW"KmUKNeUYBPLMKfW±QcyQ£IM O¢mUP>bzM bc- Å R YpIJ>m1PLJ>PLKXW±H39Q eUP>bz e Q[mHGKm4sKNKX M ÚE Ú£QcM W ÂzE Ú R+QcM W³Mbze YZQcJ>PLNKfWlm1bpkPLKNJdWZmUKbky4mUKNeUP>bzeW"Pdy4mUe1PLHI"mUP>bzMZbcj e E ^&K I KXelJ>PLYlPm£Q[I m ÉÒYÊ ObzM"¨W"KXM OKJLKN~cKXJ pPdypbceUÅYB KfWH3 PLMkm1KXceQtm1PLMZmUKBbky4mUKNeUP>bzeeUbcY

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(47) Events per bin. Events per bin. 0 ≤ M2lb2 < 1500 GeV2/c 4. 8. -1. Data (695 pb ) t t fV+A =-0.06 t t fV+A = 1.00 Background. 6 4 2. 3000 ≤ M2lb2 < 4500 GeV2/c 4. 8. Events per bin. Events per bin. Events per bin. Ñ. 6 4 2 14 12 10 8 6 4 2 0. 2. 2. 0. 100002. @F H. 4500 ≤ M2lb2 < 7500 GeV2/c 4. 4 2 0. 100002. 20000. M2lb1 (GeV /c 4). ? ? J?. 20000. M2lb1 (GeV /c 4). y %`n qT?Y*894K 2 ,-8;2 4(1=:=2 [%[ [-UL5V2 ,-*X>/ @t1-?Y*ICB?V2 ,-] *NX>79*.K1-/4 2 4XI1-?*'?89]?Y*[1~ 1B2 ]] *NX *1NM MÜ894¡*t,-*]89/4Y[t/ @á1-?* 894(2 ,-82 4L1b:=2 [%[[-U(52 ,-*NX/ @1-?*tCB?V2 ,-]*NXf 7;*.Y1-/4I2 4VX31-?*t[%*C/ 4VX ?89] ?*[ 1 v~ 1B2 ]] *NXT*1NM MN@ / ,1-?*§79*.Y1-/ 40Gi*61-[[-2 : .Y79*§8<1-? 1\/h~ 1B2 ]] *NXF*1-[niy/ ,O Q R S+ laK ap(MY1-?Y* .Y,-/ cV2 cY897;8<1-89*[2 ,-* o 3M 3MmNa=M m 3M2 4V

(48) X L_ 894I/ ,BXY*,/ @894C,-*N2 [%894] n 2. 8 6 4 2 4000 ≤. 12. M2lb2. 2. < 6000 GeV /c. 6 4 2. @F H. 10000. 20000. 2 M2lb1 (GeV /c 4). 20. 2000 ≤ M2lb2 < 4000 GeV /c. 30000. 4. 10 8 6 4 2 2. 8. 0. 12. 4. 10. 0. Entries per bin. 4. -1. Data (750 pb ) t t fV+A =-0.06 t t fV+A = 1.00 Background. 10. Entries per bin. Entries per bin. Entries per bin. 2. 0 ≤ M2lb2 < 2000 GeV /c. 12. M2lb2 ≥ 6000 GeV /c. 10 5 0. 10000. 20000. 2 M2lb1 (GeV /c 4). 30000. y %` n PqT?Y*`894( 2 ,-8;2 4L1b:=2 [%[[-U(52 ,-*NXI/ @i2vC6?2 ,-]*XI7;*.Y1-/42 4VX 1-?*P?Y89]?*[1 *61NM M8;4`@ /5K,i,-*]89/4Y[\/ @01-?Y*P894K 2 ,-8;2 4(1á:=2 [%[ [-UL5V2 ,-*NX3/ @1-?Y*xCB?V2 ,-] *NX=f 7;*.Y1-/42 4X=1-?Y*x[%*C/4VX3?89]?Y*[13*1NM MN@ / ,e1-?*áXY8979*.K1-/4F[-2 : .Y7;* nqT?Y*,-*\2 ,-*á1¯T/*4L1%,-89*[.0*6,**4L1NM /4Y*` @A/ ,F*N2 C6?79*.Y1-/ 4en`y/ ,FO Q R S l a( apKMe1-?* .K,-/c2 c89798<1-89*[ 2 ,-*' 3Mem 3MÜ L3M2 4X(mN 8;4/ ,BXY*6,b/ @894C,-*2 [%894] n . Q[m1PLbcM QcJ W"K 3"y PkIK I OJLKXQcP>eUKpKNm 3"y PkIKBWKXy Q[e1m1PdO¢ I JLKXy Óc { m1 K I y1y1PdQ[M bcIMWQtmUP>bzM£bze&&Qzy PdO KXy1KXQ[eO m1 K bcYlPLy1Pfcg©b M ¡ Mkm1KNeUYlP>M PLy m1KXe1PdQ[JW"K PLKNMOPdQ ^KfOMbzJ>bz² © QgR {3 QcP>M m1K00IeUbcGKXQ[M bzYBYpIMP>m4+¤ y IYZQ[M bcm1KXMzmUPLQcJ eUb[ ceQ[YlYlg KFI M W"KNe_ObzMkm1eQcO¢m * ^ ÚKÚ %ÚKÚ É Q[M W9mUK g D*OXQcW"KXYF´bc' PLMJdQ[M WE. ?. B LB. mxy\n c0*x*12 7 n u\wtyu\/ 7972 c0/ ,B2 1-8;/ 406M§?LZK[n*0n e*61%1NnM. L?. @B. ? ?. ? ? ?. )A. ?. D. B A. @?. B A. @F. ?. N. 4. 15. 0. ? B.

(49) ? A

(50) A B. 6. 4. "%n$&*N2 c0*W'2 4X' &Yn('n")t5Y?4M*x5C7 n"§?LZY[n ,+.-#MYmxmo$ o6n b `n ánF ) 2 4*MY`n Fn 2 XY894[%WLZLM(2 4VX3ubn n#i/ 5V2 4eM§?LZK[nb*0n w0Ü1 MemN mNo o 6n p % nVy8;[%CB?*6,NMÜ nVb,-/L/ 1-* MY& n0`n t ) / ,-4Y*,NM2 4VX2 % n0ubnI % 2 5[%*6,NM ?LZY[n § *0nYw03 + M0a"KmN aKm4r t a aKmN6n _' ( n5Ü newr/KM6Ü nb,-/L/ 1-*M6Y& n`n7t ) / ,-4Y*,NM§2 4X8 % náubn7I % 2 5[%*6,NM ?LZY[n § *0nYw03Ü M0a oKmN aKm4r t a a$6n % n 'n bn i*]YM#F n s`n \5VXK4LZLM$F n$ % /?V2 .V2 1%,B2KM(2 4VX Fn9( 8<,-7;894M ?LZY[n § *0n *1%1Nn + : Mm mNo__6n ob `nVqe,-8;2 4L1B2 .Y?(ZK7979/5M Y& n;§ ?(ZK[nV0< 3 MVoo aaa6n ma whnu\?/5XY?(5Y,%ZLMqxn % n nq2 8<1NMx2 4Xubn n % nP)2 ] 4*,NM ?LZY[n § *0nYw03 1 M0a" aaI aa 6n m m= whn bC/[1B2`*612 7¢n u\wtyu\/ 7972 c0/ ,B2 1-8;/ 406M§ ?LZK[n *0nKw>- M a"KmmaKm4r F aa6n mN Fn bc5Y79*4C8;2=*1t2 7¢ni u\wry u\/797;2 c0/ ,B2 1-89/4V6M5á ?LZK[n *0n0w ;Ü+ Mmm mma$Y4x t aa p6n ms'n % n cV2 / +*1v2 7¢n¢w u\/797;2 c0/ ,B2 1-89/406Má ?LZK[n *1%1Nn 3.-!ÜMm aa6n m= " s'n % n cV2 / +*1 2 7 n¢w u\/797;2 c0/ ,B2 1-89/4V6Má ?LZK[n7 *0nw ;Ü< M0aKm mma" 4x t aa6n mN y\n 2 ,-89/ [M % n 'n? *,-*Má2 4VXubn n?i/ 5V2 4M7§ ?LZY[n e*61%1Nn 1 Ü M"" mNo oo6n mpP )+*t5[%*r79*.K1-/41-/ XK*4/ 1-*t2 4*79*C1%,-/4/ ,x2h:h5Y/4en mN_ whn bC/[1B2`*612 7¢n u\wtyu\/ 7972 c0/ ,B2 1-8;/ 406M§ ?LZK[n *0nKw>- M "a a aKm3 a a 6n m Fn Ü@ / 7;XY*,h*1v2 7¢n;MAb * 5C7¢n ¯4[1%,-5Y:In7 % *1-?Y/(XY[ B1 < 3 M\ o aa" 6n moP )+*t5[%*'2hCZK79894VXK,-89CN2 7C/L/ ,BXY894V2 1-*`[ZK[1-*:Æ?Y*,-*t1-?*= C 2 ^Y89[ 89[2 79/4Y]1-?*.Y,-/ 1-/4Dc0*2 : XY8<,-*C1-89/ 42 4VXE D 89[=1-?Y*.0/7;2 , 2 4]79*ná [%*5VXY/ ,B2 .Y8XK8<1Z89[ F lJI794T1B2 4GD9 H 6Me?8979*v1%,B2 4[ *6,-[%*': / : *4L1-5: 8;[ág l>I gI [%894(D M02 4VX1%,B2 4[%*,-[%*F*4Y*,-] Z 89[6 lJ [%894KD n# % 89[%[%8;4Y]r1%,B2 4YK [%*,-[%**4*6,-] ZLM# ML89[áXY*6¡V4*X 2 [§1-?Y*T:=2 ] 48<1-5VXK*T/ @ >K M L K M ?*,-* M L K 89[§1-?Y*T54Y8<1§*C. B. 4. 8. LA. ?2 4VXK*NXcLZ=,-89]?L1 ?V2 4VXY*X3.0/ 72 ,-89N2 1-89/4MÜ2 ,-*F89: .7989C8<1Nn. 6. 0 M2lb2 ≥ 7500 GeV /c. bu\?2 ,-]*JC/ 4 5]2 1-* XY*CN2ZK[MD8<1-? ,-*.Y7;2 C*: *4(1 / @79*@A1 . 1500 ≤ M2lb2 < 3000 GeV2/c 4. 8. p pImNoo6n 0n bc2 CB?8L*1á2 7 nY¢w >u\/797;2 c0/ ,B2 1-89/406M!§?LZK[n"*0n e*61%1Nn#M $p mNoo6n. . 1-/ ,i894'1-?*P2 89:h5Y1-?2 7(.7;2 4*\1-?2 1§.0/894L1-[@A,-/ : 1-?*Tc0*2 :#79894* 1-/h1-?Y * NGOGPvCN2 79/ ,-89: *1-*6,1-/N\*,Nn a Fn (8;797¢ M *b5C7¢n 4Y[1%,-5:In %*1-?Y/(XY[ Q ÜMemv aa a6n Lm=whn bC/[1B2È*12 7¢n;R M *b5C7¢n 4[1%,-5Y:I n %*1-?/(XK[ ST!Mh_ aa 6n whn bC/[1B2`*612 7¢n u\wtyu\/ 7972 c0/ ,B2 1-8;/ 406M §?LZK[n *0nK> w -M a a $a a a 6n %n áUn %I2 4]2 4/I*61F2 7¢n97M &Y.n (b8;] ? §4*,-] V Z á?LZK[. n W+;WÜMa aKm a$a 6n "('n án e2 8*1r2 7¢n uTq 6XÆu\/797;2 c0/ ,B2 1-89/4V6M §5Y,Nn á?LZK[n &Yneu -!<ÜM _ a aa6n qxAn N/ [1%,B2 4VX*1v2 7¢n;Miu\/ : .5K1N?n §?LZK[n§u\/: :`547n -!+ 1Mi $ aaKmN6n p Pn x*,-C6?L1-*894 2 4Y X %Z n 2 5798948¢M * u\/4K\ @ ['W +;W+ <U-VM q ]%IqPaaI a$a 6n _ Fn á,-54*61x2 7¢n;M0u A* wrwt \ " m m$o _6n whn C/[1B23*1t2 7¢ni u\wry u\/797;2 c0/ ,B2 1-89/4V65M á?LZK[n *0n e*1%1Nn T +ÜMm a aKm3 a "a L6n o %nVuT2 CC82 ,-8*12 7¢n;;M &Yn (x89]? á4Y*,-]

(51) Z §?LZY[!n WMV"p a"a 6n a*' n )t8XK/42 W(89[2 4V^ X Fnsi/ ] 1N M §?LZK[ n b*0n_ w 3 :Mvm m a(m a$a 6n (m= Fn \?V2 1%1-8r*1I2 7¢n9 M *x5YC7¢n 4Y[1%,-5:I n %*1-?/(XK[ `1 3;3 M _ aap6n P) n %;n /\2 /`*1b2 7¢n9M &Y;n §?(ZK[nV> + +Mm a ap6n. ? $? ?. F. B. 0B 0B. D. JA?. ? A. ?. F. D. D. CD. F. )DD D. ?. @D. ?. 0B.

(52)