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TRANSCRIPT
1
Mea
sure
men
tof
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M.T
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19Ju
ly20
03
2
Intr
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19Ju
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03
4
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03
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M.T
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19Ju
ly20
03
7
Man
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ase
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M.T
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son
19Ju
ly20
03
8
Fro
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M.T
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son
19Ju
ly20
03
9
❶B
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son
19Ju
ly20
03
10
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19Ju
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03
11
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//// ):
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etho
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M.T
hom
son
19Ju
ly20
03
12
All
Met
hods
basi
call
y:
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cate
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peak
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cons
truc
ted
inva
riant
mas
sdi
strib
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n
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seM
onte
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for
bias
es
Rec
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a Inva
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6070
8090
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by:
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vent
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ecti
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cert
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eed
prec
ise
Mon
teC
arlo
Pre
dict
ions
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.Tho
mso
n19
July
2003
13
Sys
tem
atic
Unc
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intie
sI:
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ect
orE
ffec
ts
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etec
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nly
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pica
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est
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ect:
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ter
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M.T
hom
son
19Ju
ly20
03
14
E1
E2
Ele
pt
E1
E2+
δ
Ele
pt★
Inth
eev
ent
rec
onst
ruct
ion
Sat
ellit
ecl
us-
ters
are
not
ass
ocia
ted
with
lept
on★
The
refo
reas
soc
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ithne
are
stje
t★
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tan
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all:
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July
2003
15
QE
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ncer
tain
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ow
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ch
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tem
atic
sat
leve
lof
Î MeV
M.T
hom
son
19Ju
ly20
03
16
Fra
gmen
tatio
n/H
adr
oniz
atio
n
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roce
ssof
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hadr
ons
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ckm
agi
c
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ely
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onte
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lltu
ned
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re:
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ter
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icun
cert
aint
yta
ken
asco
rrel
ated
betw
een
expe
rimen
ts/c
hann
els
Fin
alS
tate
Inte
ract
ions
★W
deca
yve
rtic
esse
para
ted
by
Ð 0.1
fm
★H
adro
nisa
tion
scal
e
Ð 1.0
fm
★P
ossi
bilit
yof
non
-inde
pend
ent
hadr
oni
satio
nfo
rW
boso
ns
in
ijÏÏÏÏ ev
ents
.
★C
andi
stor
tre
cons
truc
ted
mas
ssp
ectr
a
★P
ossi
ble
sour
ces:
BE
Can
dC
olou
rre
conn
ectio
nM
.Tho
mso
n19
July
2003
17
Bos
e-E
inst
ein
Cor
rela
tions
(Pau
lde
Jong
’sta
lk)
Ò BE
C-
Qua
ntum
mec
hani
cal
effe
ct
Ò Like
sign
Ó ste
ndto
becl
ose
inph
ase
spac
e
Ò BE
Cbe
twee
npi
ons
from
diff
eren
tW
s?
SAM
E W
DIF
FE
RE
NT
W
Col
our
Rec
onne
ctio
n(J
org
end’
Hon
dt’s
talk
)P
ertu
rbat
ive
phas
e(Q
CD
)
Ò Sup
pre
ssed
by2
gluo
nex
cha
nge
+co
lou
r
Ò Neg
ligib
lem
ass
shift
s
Ôqd M
eV
Had
roni
zati
onph
ase
(no
n-pe
rtur
bativ
e)
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yon
mod
els
(str
ing
,clu
ster
...)
Ò Pre
dict
ions
ofm
ass
bias
es:
0-30
0M
eV
e- e+
Z/γ
W Wqq
q q
Eff
ect:
poss
ible
syst
em
atic
bias
in
ÏÏÏÏ ch
anne
l-
but
not
ÏÏÕ ÖØ×
★LE
Pco
mb
ined
resu
lt(d
oesn
’tin
clu
deF
SIs
ys.
erro
rs):
Ù Ú tÛ ÏÏÏÏ ÜÏÏÕ ÖÝ×
ÞßàááÍ âãäå
★R
esul
tsco
nsis
ten
t-
but
can’
tus
eth
isto
set
sys.
erro
rM
.Tho
mso
n19
July
2003
18
FS
ISys
tem
atic
Err
orE
stim
ate
★S
yste
mat
icer
ror
from
mod
els
.★
Cur
rent
CR
erro
rfr
omS
K-I
(
æ =2.1
)★
æ dete
rmin
esam
oun
tof
CR
★U
sela
rges
tva
lue
cons
iste
ntw
ithda
ta(s
eeJo
rgen
d’H
ond
t’sta
lk)
Mod
elE
ffec
tM
ass
shift
Her
wig
CR
ç 30M
eVS
K-I
è =2.1
CR
ç 90M
eVS
K-I
100%
CR
ç 300
MeV
Aria
dne
AR
2C
R
ç 70M
eVLU
BO
EI
BE
ç 35M
eVSK
-I W
Mas
s B
ias
Com
pari
son
AL
EPH
- E
rror
on
poin
ts 0
to 1
7 M
eV
DE
LPH
I -
Err
or o
n po
ints
0 to
6 M
eV
L3
- E
rror
on
poin
ts 0
to 1
5 M
eV
OPA
L -
Err
or o
n po
ints
0 to
13
MeV
% R
econ
nect
ed E
vent
s
W Mass SK1- Standard Jetset (MeV/c é
2) -5
0050100
150
200
250
300
010
2030
4050
6070
8090
100
★O
bser
veeq
ual
expe
rimen
tal
sens
itivi
ty
FS
Iass
umed
100%
corr
elat
edbe
twee
nex
pts.
★co
mm
onen
ergy
-dep
ende
nt
CR
erro
ris
used
in
LEP
com
bin
atio
n
050100
150 17
018
019
020
021
0
√s [G
eV]
∆MW [MeV]
SK
I m
odel
, κ=
2.1
Ene
rgy
Dep
ende
nt W
Mas
s B
ias
M.T
hom
son
19Ju
ly20
03
19
Sys
tem
atic
Unc
erta
intie
s(L
EP
Com
bine
d)
Sou
rce
Sys
tem
atic
Err
oron
s t (M
eV)
vvê w ×
vvvv
Com
b.H
adro
niza
tion
1918
18Q
ED
(IS
R/F
SR
,etc
)8
88
Det
ecto
rS
yste
mat
ics
1410
14LE
PB
eam
Ene
rgy
1717
17C
olou
rR
econ
nect
ion
ë
909
Bos
e-E
inst
ein
Cor
rela
tion
s
ë
353
Oth
er4
54
Tota
lS
yste
mat
ic31
101
31S
tatis
tical
3235
29To
tal
4410
743
★
vvvv ch
anne
l:sy
stem
atic
sfr
omF
inal
Sta
teIn
tera
ctio
nsdo
min
ate
★
vvê w ×
and
vvvv yi
eld
sim
ilar
stat
istic
alun
cert
aint
ies
★LE
Pco
mb
inat
ion
:th
e
vvvv ch
ann
elon
lyha
s10
%w
eigh
tdu
eto
FS
I
M.T
hom
son
19Ju
ly20
03
20
★C
ombi
ned
LEP
resu
ltsfr
om17
2-20
9G
eV(
c 650
pb
jì /exp
t.)
í OPA
L/A
LEP
H
î ï ðî ï ð
resu
lts(f
acto
r
ñ 10le
ssse
nsiti
ve)
com
bin
edw
ith
òòî ï ð
í ALE
PH
and
L3re
sults
take
acco
unt
ofin
ter-
cha
nnel
corr
elat
ions
í OPA
Ldo
esno
tye
tin
clu
deth
e20
00da
ta(
ó 220
pb
ôõ )
80.0
81.0
MW
[GeV
] (no
n-4q
)
LE
P w
orki
ng g
roup
corr
el. w
ith
4q =
0.1
8
AL
EP
H [1
996-
2000
]80
.375
±0.0
62
DE
LP
HI ö [1
996-
2000
]80
.414
±0.
089
L3 ÷ [1
996-
2000
]80
.314
±0.0
87
OP
AL
[199
6-19
99]
80.5
16±0
.073
LE
P80
.411
±0.0
44
Sum
mer
200
3 -
LE
P P
reli
min
ary
80.0
81.0
MW
[GeV
] (4q
)
LE
P w
orki
ng g
roup
corr
el. w
ith
non-
4q =
0.1
8
AL
EP
H [1
996-
2000
]80
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±0.1
17
DE
LP
HI ö [1
996-
2000
]80
.374
±0.1
19
L3 ÷ [1
996-
2000
]80
.485
±0.1
27
OP
AL
[199
6-19
99]
80.4
07±0
.120
LE
P80
.420
±0.1
07
Sum
mer
200
3 -
LE
P P
reli
min
ary
Ú tÛ ÏÏÕ Ö ×
ÞßøùûúâüüÍ ù úùãáÛþýÿ��ÿ úÞ Íù úùãùÛþý�ý úÞ �äå
Ú tÛ ÏÏÏÏ
Þßøù úâáùÍ ùûúùã�Ûþýÿ �ÿ úÞ Íù úüùüÛþý�ý úÞ �äå
★S
yste
mat
ics
com
plet
ely
dom
inat
ein
ijk vvvv
!
★S
yste
mat
ics
also
impo
rtan
tin
ijk vvê w ×
chan
nel
M.T
hom
son
19Ju
ly20
03
21
LEP
Com
bine
d
� �
and
� �
Res
ults
80.0
81.0
M
� W[G
eV]
LE
P w
orki
ng g
roup
χ2 /dof
= 2
9.6
/ 37
AL
EP
H [1
996-
2000
]80
.379
±0.0
58
DE
LP
HI
[199
6-20
00]
80.4
04±0
.074
L3 [1
996-
2000
]80
.376
±0.0
77
OP
AL
[199
6-19
99]
80.4
90±0
.065
LE
P80
.412
±0.0
42
Sum
mer
200
3 -
LE
P P
reli
min
ary
1.5
2.0
2.5
Γ W[G
eV]
LE
P w
orki
ng g
roup
χ2 /dof
= 1
9.7
/ 24
A
LE
PH
[199
8-20
00]
2.13
±0.1
4
DE
LP
HI
[199
7-20
00]
2.11
±0.1
2
L3
[199
6-20
00]
2.24
±0.1
9
OP
AL
[199
6-19
98]
2.04
±0.1
8
LE
P
2.15
0±0.
091
Sum
mer
200
3 -
LE
P P
reli
min
ary
Ú tÛ �� Þßøù úâüáÍ ùûúùá�Ûþýÿ �ÿ úÞ ÍùûúùãüÛþý�ý ú
Þ �äå
(inc
lude
sLE
Pre
sult
from
thre
shol
dcr
oss-
sect
ion
:
������� � ����������� ��� � �������� �� � ! )
" #Û �� Þßá úü�ùÍ ùûúù$øÛþýÿ �ÿ úÞ Íùûúù$ùÛþý�ý úÞ �äå
M.T
hom
son
19Ju
ly20
03
22
Com
paris
onw
ithO
ther
Res
ults
Dire
ctvs
.In
dire
ct:
W-B
oson
Mas
s [G
eV]
mW
[G
eV]
8080
.280
.480
.6χ2 /DoF
: 0.3
/ 1
%
pp−-c
ollid
ers
80.4
54 ±
0.0
59
LEP
280
.412
± 0
.042
Ave
rage
80.4
26 ±
0.0
34
NuT
eV80
.136
± 0
.084
LEP
1/S
LD80
.373
± 0
.033
LEP
1/S
LD/m
t80
.378
± 0
.023
SM
Con
sist
enc
y:
80.2
80.3
80.4
80.5
80.6 13
015
017
019
021
0
mH [G
eV]
114
300
1000
mt
[GeV
]mW [GeV]
Pre
limin
ary
68%
CL
∆α
LEP
1, S
LD D
ata
LEP
2, p
p− D
ata
★Im
pres
sive
cons
iste
ncy
betw
een
dire
ctan
din
dire
ctm
easu
rem
ents
of
& #
(with
poss
ible
exc
eptio
nof
NuT
eVre
sult)
M.T
hom
son
19Ju
ly20
03
23
Out
look
★In
abse
nce
ofsy
stem
atic
s,LE
Pst
atis
tical
prec
isio
non
' #
:
( )*
+-,. !
★D
ueto
curr
ent
FS
Iunc
erta
intie
s
//// -c
han
nel
cont
ribut
esve
rylit
tle
LEP
Tota
lE
rror
:
( 0 1
+ ,.
LEP
Tota
lE
rror
(
//2 3 4
alon
e):
( 00+ ,.
★H
uge
amou
ntof
ong
oing
wor
ktr
ying
toad
dres
sC
Rer
rors
(J.D
’Hon
dt’s
talk
)
Trad
e-of
fsy
s.an
dst
at.
erro
rsin
//// -c
han
nel?
★R
emo
vepa
rtic
lem
ost
affe
cted
byF
SI:
✫M
omen
tum
cuts
✫Je
tco
necu
ts
★P
ossi
ble
Gai
n:✫
Red
uce
FS
Ierr
ors
byfa
ctor
3?
✫co
st:
incr
ease
stat
.er
rors
by20
%
★Ta
keca
re:
hadr
oniz
atio
nun
cert
aini
ties
?
5 Fur
ther
cons
trai
nC
Rm
odel
sus
ing
data
DELPHI preliminary SK1 curves
-1000
100
200
300
400
500
600
10-1
110
102
Sta
ndar
d an
alys
is1
GeV
pcu
t2
GeV
pcu
t3
GeV
pcu
tC
one
R=1
.00
rad
Con
e R
=0.7
5 ra
dC
one
R=0
.50
rad
Con
e R
=0.2
5 ra
d
SK
1 M
odel
par
amet
er
κ∆mW / MeV/c
2
κ =
0.66
M.T
hom
son
19Ju
ly20
03
24
Out
look
and
Con
clu
sion
s
★M
ovin
gto
war
ds
final
LEP
' 6
resu
lts
★P
reci
sion
of
( 7987:; re
quire
sca
refu
lan
alys
is
★C
urre
ntre
sult
:
' 6<=7 80 *)( 7 87)>?A@BDCB 8E( 79871*?A@F@ 8E G,.
★E
xpec
tim
pro
vem
ents
:LE
Pbe
amen
ergy
unce
rtai
nty
)*
+-,. w
illco
me
dow
nR
educ
edst
at.
erro
r(im
pro
ved
anal
yses
+O
PAL
2000
data
)B
ette
run
der
stan
ding
ofha
dron
isat
ion/
dete
ctor
syst
emat
ics
My
gues
stim
ates
for
final
LEP
erro
r:
★W
itho
utsi
gnifi
cant
impr
ovem
ent
inF
SI:
1HJI07
MeV
★W
ithsi
gnifi
can
tim
pro
vem
ent
inF
SI:
1) I1H M
eV
Gue
sstim
ate
Cal
ibra
tion:
★Ia
lso
pred
ict
Eng
land
tow
inth
ene
xtw
orld
cup
atbo
thR
ugb
yan
dF
ootb
all
!
M.T
hom
son
19Ju
ly20
03
25
Con
clu
sio
n:T
hejo
ysof
LEP
Inth
ene
arfu
ture
LEP
phys
ics
will
besu
mm
aris
edas
:“.
...pr
ecis
em
easu
rem
ents
ofth
em
asse
san
dco
uplin
gsof
the
KL and
M ...”
PERKINS,
High
EnergyPhysics,
NOPEDITION
(2007)
The
situ
atio
nin
1989
(yel
low
ellip
se).
...
74767880828486
8890
9294
9698
68 %
Err
or C
onto
ur
MZ /
GeV
MW /GeV
74767880828486
8890
9294
9698
68 %
Err
or C
onto
ur
MZ /
GeV
MW /GeV
74767880828486
8890
9294
9698
68 %
Err
or C
onto
ur
MZ /
GeV
MW /GeV
....a
ndno
w(b
lue
ellip
se)
M.T
hom
son
19Ju
ly20
03