Mar 1, 2000 - QCD Results from the DELPHI Measurements of. Event Shape and Inclusive Particle Distributions from 192 to 202 GeV. J.Dreesi, U.Flagmeyeri ...
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> GM J J GM %!J F M F?7 L A J F & < F < M& L A J+ < L < < J 4 AIMÔ?BA ? E > > J EGF L)E < F J0F J > E!H :Wc 1 %J ' L A J M F ? Q M %GJ J ? L >Ä< L A Jd < L < J : JIL J < L)J 4NM F ? JTL A J L < L M& L MÔ?TM < > J < NQDo?0M J F#L %!~"%$|& M) J0L MÔ? J0LNJ ? L)E > M L A7E7 A J L >Ä 4 M L Q< L)J M FH > EGF#LE!H?L A J4J J ? L > E9-h M J0L)J > J L >Ä J < J > L Q O J- J0LNJ ? LNE > 2 M F L A J O@> J > J GM EGFXk7 A J HKE > > J GM E!F M&o? E%!J > J O NM M? EGFl M F M - L N > M < F\ M`U JH J;L)J ? L)E > ' gm 5 7 (3< F O RL A Jn > M H L ?BA< O J > J0LNJ ? L)E > 5~A0 < F 5~p0 o 7 A J JPJ ? L > E < F J;L MÔ?3?w< PE N> M J0LNJ > J L A J IA M&,A J F NM Lj > E>Y J ? L M EGF ?BA< O J > $¤"0 M FL A J O@> J 4< F L A JE J < - < ?{< E N> M +J;L)J > 5M ; 0 M FDL A J HKE > > J GM EGF$ J0L !< M J M FIHKE > < L M EGF < O E Q L L A Jn J M& F < FZJ > HKE > < F ? J%E!Hi%!#"$|& ?w< F O J HKE Q F M F?2 c_4q1 5 ! =& F E > J > L)E JPJ ? L* JGJ < Q> J ?BA Jr L MÔ? PJ L >Ä L E Hp7 ! < O PJW( A< %GJ O J J0F < M JX@7 A J 0? Q L M F L A J-PE J > L E!H L A J2L < O PJ J Q J LNE Bwv>x t ! #! J%!J F#L < F L)E Q > J O E Q Fy > E ? J J +NQò?BAn, JPJ ? LZsJXs ut < L E9 A E L)EGF M F#L)J > HKJ > M EGF O E Q FX
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1/N dN/d(ECM)
1/N dN/d(ECM)
0.12
0.12
DELPHI 192 GeV (preliminary)
0.1
data
DELPHI 200 GeV (preliminary)
0.1
data
QCD+4F MC
0.08
QCD+4F MC
QCD MC
QCD MC
0.08
4F MC
4F MC
0.06 0.06
0.04 0.04
0.02
0
0.02
60
80
100
120
140
160
180
200
0
220
ECM [GeV]
60
80
100
120
140
160
180
200
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5 MGQ> J :+ Oò"8S & ; HKE >3 HKJ > M E!F NM Q < L M EGFX L J0F J > GM J ¤< O E%GJ ò: ¹(TJ 4 L A J A M,Aq?w> E H J ? L M EGF E H L A JB > J EGF < F ? J"J Ä h&zOIS < & E M F L A J ?w> J < L M EGF E!H < F J `EGF- @A JB O E EGFX 7 A J J >Ä< M < L M %GJ > J;L Q> F J%!J F#L ? EGF L M L Q LNJ < JH > EGF M? J %GJ0FL 07 A J M F M L M < L < L)J A E!L)E!F JL MÔ?w< &` < M F J < PE!F L A J O J < MÔ> J ? L M E!F < F J > J M J0F#L Mf J M F NM IJ L A Jp J0LNJ ? L)E > &=F E > J > L)E2J% < Q< LNJ L A JTJ 9 J ? L M %GJ A< > EGF M?? J0FL > JE!H E!H < F J %GJ0FL 4? EGF M J >NM F &zOIS 4)< F < E N> M L A ?{< &PJ
M&+Q J.2 56
M&+O< J EGF - EJ F#L Q ? EGF J > % < L M EGFL)EJ , < NQ> JdY J;LHKE Q> - EJ F#L < ' M F ? Q M F J L M < L)J E!H'L A J M> J >@> E
> L( nO5J%!J > < < NQ -IL M EGF ¤!< O E Q L L A J-J %GJ F#LTLNEE PE JL)J L)JXE7 A J J ? MNM E!F M& L < : J F M F LNE2L A J § E O L !< M F JRH > E L A J ? EGF L >Ä!< M F J f L M L A M 9 J > J F#L L)E E E GM J 5 M&!Q> J n: @A E L A J : ( < F (+*+* TJ J ? L >Ä< E!H L A J ?w< 0? Q < L)JRJ0F J > GM J HKE P> NM Q < L)J < F J < Q> J J %GJ0FL < M F _< & O Q LRL A J \ ? Q L 7 A J < ,> J JJ F#L O J0L J J0F < L < < F NM Q < L M EGF M& %GJ > E E_ HKE > L A J I A M&,A J F J > GM J o> JPJ% < F#L2L)E L A Mo< F < ` M&4 A M PJRL A J J < : E Q F A < J L)E O J M&,A L A M H L)J M F L A J NM Q < L M EGFX 0? Q LTEGFBL A J > J ? EGF L > Q? LNJ ? J0F#L > J E!H8 ,< J F J > \ CSG[= 5 * ] X =[Z M&'< M J LNE M ?{ > < M < L M %!J > J0L Q> FBJ %GJ0FL ' J J 7 ! < O PJ ( ( 7p Ej A E!LNEGF J%!J F#L ' J L > EGF ` NQ > J J O L A J ? Q L ?! JILNEGF M? O E Q F
< HKE Q FRL)E O JFIJ M&GM O PJ M FRL A M < F < ` NM& O M F ? J L A J L)E E E GM?{< NM F < L Q> J E!H ) 0) HKE Q> Y J0LRJ %GJ F#L < F A< > EGF M? IyI J%!J F#L ' < F E!L A J > HKE Q> HKJ > M EGF O E Q F L(1 J M M 4 F E A M&,A J Do? M J F#L J Ä< L M EGF E H4L A J L E ? < J E!HJ %GJ F#L M& E MPO J ý5 Qò> L A J > E > J < FMú8,5 > J Y J ? L M EGF M @ M J Z < J%!J > J O M ,< LNE L A J @A< JC M& L N > M O Q L M EGF E H ) 0) J %GJ0FL 4 A MÔ?BA F J J L)E O J ? E > > J ? LNJ M L Z A NM Q < L M EGFXo < M F < ? Q LE!F < F E O J > % !< O PJ ?w< 0? Q < L)JTH > E L A J F > E) J%!J F#L A J M& A J > J E!F 4 L A J O M ,< L)EJ%!J F#L @A< J4E O J > % ! < O PJ !< M F J F NM L M %!J4L)E%L A J M J4J %GJ0FL A J M& A J > J M%> J Q? JX87 A J L E M +J0F NM EGF < ? Q L M FRL A J =@?BADCSEHG[IP `bZ!cedn < F J%J U PE M L L A Jd M 9J > J F#L ? E >@> J < L M EGF O J0L J J F L I A M& E O J > % !< O PJ TM F ) 0) < F HKE Q> HKJ > M E!FBJ%!J F#L 15 M&!Q> J ( @A E 4 L A< LTJ%!J FbPE u% < Q J HKE > `bZ!ced J ?BAÄ M L M? HKE > J J ? MÔ< &`ZPJIL)EGF MÔ? J ?w< M F 8/5 O E Q F M HL A J ?BA J Q L M M? M L M& PE , < JZo L IA M&< &E L * ] E!HL A JHKE Qò> HKJ > M EGF O E Q F ?w< F O J 6
Ncharged
1/N dN/d(Bmin)
DELPHI 200 GeV (preliminary) data
MC 200 GeV 4F (hadronic decays)
60 40
Nch=500 Bmin 20
QCD+4F MC QCD MC
0
0
0.05
0.1
0.15
0.2
0.25
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4F semileptonic
10
0.3
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4F hadronic 60
4F (semileptonic decays)
40 20 0
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0.05
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Bmin 1
60
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40 20
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0.12
0.14
0.16
0
0.18
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2 c 5 ( 7 A J J ; EGF#L)JW0 E J%GJ0F#L 1 J3 > E ? J J? M L A L A J > J ? EGF L > Q? L M EGFa > E ,>Ä< < F JPJ ? L M EGF ? Q L g,< ¤ JL A J > J < < L < 3=& F E > J > LNE ? E > > J ? L4HKE >|? Q L 4 J0LNJ ? LNE > 4< F=z& OIS J9J ? L g< O M F O O M F > J ? L M EGF 4 E O L ! < M F J H > E sJXs t Bwv>x t ! #! NM Q < L M EGF 4 M¤< M J LNE L A Jd < L M O Q L M EGFX ' ( AD=[= > J > J J0FL L A J MPO Q L M E!F < E O L ! < M FIJ+ M L A L A JTH Q &$ J0LNJ ? LNE g> NM Q < L M E!FX M GQ J NM Q L M `bZ!ced@ J
b#jOv'N{LOKixymoI pqrIv3PTf &=F ? Q M %GJ L !< O PJ A< > EGF J ? L >Ä< J A M,A ` J0F NM L M %!J L)Eb > E J > L M J E!H L A J A< > EGF MSh{< L M E!F > E ? J < F L)E > J E!F < F ? J+ J ?w< o< J < L)E J;L LNEGF A E J > $J > J L A J JJ0F E!F L A J < E Q F#LDE!Hd J < F PJ < F ? E M FIJ - Q EGF >Ä< M < L M EGF < J& < EGF L A J (
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? E A J > J F ? J-E!H Q EGF >Ä< M < L M EGFXA7 A J J+J < NQò> JJ F#L L A J > J;HKE > JC > E% M IJ >NMGM ? EGF L >Ä EGF MFh{< L M EGF > E ? J ? E @ > J A J0F NM %GJ ? E- NMNM EGF E!H M F ? QNM %GJ M& L > MPO Q L M EGF M L A E_IJJ U J ? L < L M EGF M > J J0F#L)J < ¤< H Q F ? L M EGF E H L A JC L MÔ? PJn+E +J0FL Q 4 L A JCPE /NM L A E H L A J ?{< PJ A< > EGF E+J0F#L Q S T k PF ' : vMT ( ' M L A MT k /vGJADZ ( 4 L A J >Ä< M M L M L As> J J ? L LNE L A Jj7 A>NQ L U5M& k § PF J T T < J < L A JBL > < F %!J > Ja+EJ F#L < ' ce d 4 YH RQU ( M L A > J J ? L L)E L A J L AòN > Q L@- )< U J j < F XS J2L A Jj L MÔ? PJ3EJ F#L !M J > J J ? L M %GJ`@7 A J+J0F J > GM J A< %GJ O J0J F ? E- Q L)J < NQ M F L A J ?BA J^ L MÔ? PJ LNE O JC M EGF O LNJ < L M? J > > E > |A< %GJ O J J F J L M < LNJ NM M < HKE > L A J%J%GJ0F#L A< JC M& L > MPO Q L M EGF 5 M&!Q> J¤6 A E L A JHS T 44 ce d < F YH RQU J ? L >Ä< < J0LNJ > M FIJ H > E L A J(+*,*jTJ < L < 7 A JH < L < J F#L < L M E!F@E_IJ < L Q FIJ O %!~"%$|L& 7 A J A< J J < M& < L A J NMSh J E H L A J%HKE Q> HKJ > M EGF O E Q F
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0.11
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0.12
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0.135
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n-jet rates JADE 1
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