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Ele
ctro
wea
k P
hysi
cs a
t the
Tev
atro
nA
dam
Lyo
n / F
erm
ilab
for t
he D
Øan
d CD
F co
llabo
ratio
ns15
thTo
pica
l Con
fere
nce
on H
adro
nC
ollid
er P
hysi
csJu
ne 2
004
Out
line
Impo
rtanc
eM
etho
dolo
gySi
ngle
Bos
on M
easu
rem
ents
Su
mm
ary
& O
utlo
okW
/Z+
γan
d D
ibos
onRe
sults
up
nex
t
2A
. Lyo
n (H
CP2
004)
Lear
ning
from
Ele
ctro
wea
k P
hysi
csm
W, m
t, an
d m
Har
e re
late
dC
onst
rain
Hig
gs m
ass
Test
of s
tand
ard
mod
el
coup
lings
(and
see
M. K
irby
's ta
lk)
Stud
y hi
gher
ord
er Q
CD
Man
y us
es in
det
ecto
r stu
dies
an
d lu
min
osity
det
erm
inat
ion
3A
. Lyo
n (H
CP2
004)
Unc
erta
intie
s in
mW
Run
1 un
cert
aint
ies
(from
hep
-ex/
0311
039)
Sour
ceC
DF
µC
DF
eD
Ø e
W s
tatis
tics
100
6560
Lept
on s
cale
8575
56Le
pton
reso
lutio
n20
2519
pT(W
)20
1515
Rec
oil m
odel
3537
35Se
lect
ion
bias
18—
12Ba
ckgr
ound
s25
59
Unc
orre
late
d U
ncer
tain
ties
(MeV
/c2 )
Sour
ceD
ØPD
F &
lum
inos
ity7
⊕ 4
Rad
iativ
e co
rrec
tions
12Γ W
1011 10
Cor
rela
ted
Syst
emat
ics
(MeV
/c2 )
CD
F15
Unc
orre
late
d un
cert
aint
ies
scal
e w
ith lu
min
osity
Cor
rela
ted
syst
emat
ics
impr
ove
as th
eory
impr
oves
Perh
aps c
an re
ach
40 M
eV/c
2pe
r cha
nnel
& e
xp w
ith 2
fb-1
4A
. Lyo
n (H
CP2
004)
Col
lider
: Tev
atro
nfo
r Run
II
Base
goa
l is
4.4
fbBa
se g
oal i
s 4.
4 fb
-- 11
(Des
ign
is 8
.5 fb
(Des
ign
is 8
.5 fb
-- 11) b
y en
d of
FY0
9) b
y en
d of
FY0
9
5A
. Lyo
n (H
CP2
004)
Det
ecto
rs: C
DF
Save
d fr
om R
un I
Sole
noid
Cen
tral
Cal
orim
eter
Cen
tral
Muo
nSy
stem
New
/Im
prov
ed in
Run
II8
laye
r Sit
rack
ing
(|η|
< 2
)C
entr
al O
uter
Tra
cker
(|η|
< 1
)Pl
ug C
alor
imet
er (1
.0 <
|η|
< 3
.6)
Exte
nded
muo
nco
vera
ge to
|η|
< 1
.5N
ew a
nd im
prov
ed tr
igge
r and
DA
Q
Lum
inos
ity~4
00 p
b-1on
tape
Ana
lyse
s sh
own
here
use
65
-200
pb-1
6A
. Lyo
n (H
CP2
004)
Det
ecto
rs: D
Ø
Save
d fr
om R
un I
Her
met
ic L
ArC
alor
imet
erM
uon
Toro
idan
d pr
opor
tiona
l dri
fttu
bes
New
in R
un II
2T S
uper
cond
uctin
g So
leno
idIn
ner T
rack
er (S
iMic
rost
rips
and
Scin
tilla
ting
Fibe
r tra
cker
)Pr
esho
wer
dete
ctor
sU
pgra
ded
muo
nsy
stem
(inc
ludi
ng
bette
r shi
eldi
ng)
New
and
impr
oved
trig
ger a
nd D
AQ
7A
. Lyo
n (H
CP2
004)
Det
ecto
rs: D
Ø
Lum
inos
ity
370
pb-1
on ta
pe
Ana
lysi
s he
re u
se17
-162
pb-1
8A
. Lyo
n (H
CP2
004)
W/Z
Pro
duct
ion
and
Eve
nt T
opol
ogy
Use
cle
an le
pton
icde
cays
W±
(ene
rget
ic le
pton
+ E
T)Z0
(ene
rget
ic o
ppos
ite s
ign
lept
ons)
9A
. Lyo
n (H
CP2
004)
Wan
d Z
even
ts a
re e
xtre
mel
y us
eful
Mea
sure
cro
ss s
ectio
nsC
alib
ratio
n of
det
ecto
rs, l
umin
osity
mea
sure
men
tsLe
pton
uni
vers
ality
, Ww
idth
Mea
sure
W a
nd Z
prop
ertie
s (p
T(W
), p T
(Z),
y(Z)
, lep
ton
angu
lar
dist
ribu
tions
)C
onst
rain
PD
Fs, f
it fo
r cou
plin
gs, l
ook
for n
ew re
sona
nces
Mea
sure
W m
T, l
epto
n p T
spec
tra
Yiel
ds m
W, W
wid
th
W/Z
+ Je
tsBa
ckgr
ound
s to
Hig
gs a
nd T
op a
naly
ses
W/Z
+ γ
, Dib
oson
sPr
obe
elec
trow
eak
gaug
e st
ruct
ure
Back
grou
nds
to N
ew P
heno
men
a se
arch
es
10A
. Lyo
n (H
CP2
004)
Ana
lysi
s M
etho
dolo
gies
Both
DØ
and
CD
F fo
llow
sim
ilar
stra
tegi
es
Trig
gers
:C
alor
imet
er tr
igge
rs fo
r el
ectr
ons
Trac
k tr
igge
rs fo
r muo
ns
Sele
ctio
n:W
-a le
pton
and
larg
e m
issi
ng
tran
sver
se e
nerg
yZ
-tw
o op
posi
te c
harg
e le
pton
s
Elec
tron
requ
irem
ents
:Is
olat
ed E
M c
lust
erSh
ower
sha
pe (C
DF
uses
sho
wer
m
ax, D
Øha
s fin
ely
segm
ente
d ca
lori
met
er)
Trac
k po
intin
g to
cal
orim
eter
EM
clu
ster
Muo
nre
quir
emen
ts:
Trac
k m
atch
ed to
cal
orim
eter
M
IP tr
ace
and/
or m
uon
syst
em
trac
kRe
ject
cos
mic
sby
tim
ing
and
impa
ct p
aram
eter
Trac
k an
d ca
lori
met
er is
olat
ion
Mea
sure
iden
tific
atio
n ef
ficie
ncie
s with
Zev
ents
Mea
sure
bac
kgro
unds
with
Q
CD
Dije
t eve
nts
Syst
emat
ics
Lum
inos
ity (~
6%)
(use
CTE
Q6
and
MRS
T)(1
-2%
)Le
pton
ID (~
1%)
Back
grou
nds,
Esc
ale,
Rec
oil
mod
el, D
etec
tor D
escr
iptio
n
11A
. Lyo
n (H
CP2
004)
Z →
eeC
ross
Sec
tion
2 EM
obj
ects
with
p T>
25 G
eV/c
CD
F: c
entr
al +
plu
g ca
l(|
η|<
2.8)
DØ
: cen
tral
onl
y
Smal
l bac
kgro
unds
QC
DZ→
ττ
pb2.
159.3
2.25
45.54.5
lum
sys
stat
±±
±
pb28
99
2.27
5lu
msy
sst
at±
±±
CD
F:D
Ø:
12A
. Lyo
n (H
CP2
004)
Z →
µµC
ross
Sec
tion D
Øap
plie
s a
Dre
ll-Ya
nco
rrec
tion
Ver
y sm
all b
ackg
roun
ds:
QC
D (b
-jets
), Z
→ττ
p Tcu
t low
ered
to 1
5-20
GeV
/cfo
r muo
nsD
Øef
ficie
nt fo
r m
µµ>
30 G
eV/c
2
pb9.
149.5
9.24
80.72.6
lum
sys
stat
±±
±
pb2.
269.8
0.58.
261
lum
sys
stat
±±
±
CD
F:D
Ø:
13A
. Lyo
n (H
CP2
004)
W →
eνC
ross
Sec
tion
Requ
irem
ents
:1
elec
tron
with
E T
> 2
5 G
eVE T
> 25
GeV
(CD
F pl
ug a
naly
sis
used
20
GeV
)
CD
F: c
entr
al &
plu
gD
Øre
quir
es |
η| <
1.1
Trac
k m
atch
requ
ired
Back
grou
nds
QC
D, Z
→ee
, W →
τν
14A
. Lyo
n (H
CP2
004)
W →
eνC
ross
Sec
tion
pb16
714
2782
61 56lu
msy
sst
at±
±±
pb28
412
821
2844
lum
sys
stat
±±
±
CD
F (c
entr
al):
DØ
:
pb17
216
734
2874
lum
sys
stat
±±
±C
DF
(plu
g):
15A
. Lyo
n (H
CP2
004)
W →
µνC
ross
Sec
tion
Requ
ire
µp T
, ET
> 2
0 G
eVBa
ckgr
ound
s: Q
CD
(b-je
ts),
Z →
µµ, W
→τν
pb16
616
2772
64 60lu
msy
sst
at±
±±
pb32
210
012
832
26lu
msy
sst
at±
±±
CD
F:D
Ø:
16A
. Lyo
n (H
CP2
004)
Cro
ss s
ectio
n co
mpa
rison
s∫⋅
⋅dt
LA
ε
−=
⋅N
NBr
bkg
σ
Exp
erim
ent
Cha
nnel
# ev
ents
Pur
ityLu
m. (
pb-1
)ε
* A
| η| c
over
age
CD
FW
→ e
ν48
045
94.0
%72
23.1
%2.
8D
ØW
→ e
ν27
370
95.7
%42
18.4
%ce
ntra
lC
DF
W →
µν
3172
290
.0%
7214
.4%
cent
ral
DØ
W →
µν
8302
88.0
%17
13.2
%1.
6
CD
FΖ
→ e
e42
4298
.5%
7222
.7%
2.8
DØ
Ζ →
ee
831*
98.3
%42
10.0
%ce
ntra
lC
DF
Ζ →
µµ
1785
98.5
%72
10.2
%ce
ntra
lD
ØΖ
→ µ
µ11
3998
.9%
117
16.4
%1.
8
* Tra
ck m
atch
requ
ired
CD
F an
d D
Ø a
re ra
ther
sim
ilar,
exce
pt in
ang
ular
cov
erag
eC
DF
uses
plu
g ca
lori
met
er fo
r far
eco
vera
geD
Ø u
ses f
orw
ard
muo
nsy
stem
for f
ar µ
cov
erag
e
17A
. Lyo
n (H
CP2
004)
Infe
r the
Ww
idth
(Pre
limin
ary) )
()
()
()
()
()
()
()
(W
WZ
ZZ
ppW
ppZ
ppW
ppR
Γ→
Γ→
ΓΓ
→→=
→→
→→
≡ν
σσσ
νσ
l
lllll
Use
mea
sure
d W
and
Zcr
oss
sect
ions
and
R
Mea
sure
d (C
DF
Prel
imin
ary)
Theo
ry (N
NLO
, PD
G)
LEP
sys
stat
eR16.0
18.086.
10±
±=
sys
stat
R17.0
27.010.
11±
±=
µ
024
.036
8.3
)(
/)(
±=
→→
Zpp
Wpp
σσ
0021
.010
93.0
)(
±=
→νl
WBR
)%00
2.0
366
.3()
(/)
(±
=Γ
→Γ
ZZ
ll
MeV
40
2071
)(
±=
ΓW
18A
. Lyo
n (H
CP2
004)
Ana
lyse
s w
ith T
aus
Reco
nstr
uctin
g τ
lept
ons
is
chal
leng
ing
Mus
t use
had
roni
cde
cays
for
ID (1
or 3
cha
rged
trac
ks p
lus
π0 's)
But t
hese
are
had
roni
cje
ts;
high
QC
D b
ackg
roun
dLo
ok fo
r tra
cks
in a
nar
row
10
° con
e po
intin
g to
war
d a
narr
ow c
alor
imet
er c
lust
er
Requ
ire
30° c
one
isol
atio
n fo
r tr
acks
Reco
nstr
uct π
0 's (i
n sh
ower
m
ax fo
r CD
F)
Requ
ire
effe
ctiv
e m
ass
of t
rack
s an
d π0 's
to
be
< 1.
8 G
eV/c
2
(mτ+
reso
lutio
n)
0n
3)or
1(
πν
πτ
+→
±±
19A
. Lyo
n (H
CP2
004)
W →
τν(C
DF
Run
II Pr
elim
inar
y)St
art w
ith tr
ack
+ E T
trig
ger
Requ
ire
τE T
> 25
GeV
, ET
> 25
GeV
No
othe
r jet
s ab
ove
5 G
eV
2345
can
dida
tes
in 7
2 pb
-1
Bkg
= 61
2 ±
61 e
vent
sε(
ID)·
A=
1.06
±0.
064
% nb )16.0
21.007.0
62.2()
(lu
msy
sst
atW
BR±
±±
=→
⋅τν
σ
sys
stat
eW
BRW
BReg
g04.0
02.099.0
/)
()
(±
±=
=→→
ντντ
20A
. Lyo
n (H
CP2
004)
Z→ττ
Look
for 1
-pro
ng d
ecay
sLo
ok fo
r oth
er τ
via
eor µ
Und
erst
and
tau
IDIm
port
ant f
or s
earc
hes
Proo
f of p
rinc
iple
that
ττ
reso
nanc
es a
re s
een
at th
e Te
vatr
on
ττ→
0Z
ννµ
)or
(e0
nπν
π+
±
pb 15
2648
242
)/
(*
±±
±=
→→
sys
stat
Zpp
ττγ
σC
DF:
21A
. Lyo
n (H
CP2
004)
Cha
rge
asym
met
ry in
W →
eνG
oal i
s to
impr
ove
unde
rsta
ndin
g of
PD
Fsus
ing
W c
harg
e as
ymm
etry
Sinc
e u
quar
ks o
n av
erag
e ca
rry
mor
e of
the
pm
omen
tum
than
dqu
arks
,W
+pr
oduc
ed in
ud
→W
+ar
e bo
oste
d al
ong
pW
-pr
oduc
ed in
du
→W
-ar
e bo
oste
d al
ong
p
The
e±fr
om th
e W
deca
y ca
rrie
s in
form
atio
n on
the
Wdi
rect
ion,
but
true
W
dire
ctio
n ca
nnot
be
reco
nstr
ucte
d du
e to
unm
easu
red
p zof
νU
se th
e e±
dire
ctio
n to
mea
sure
AyW
conv
olut
ed w
ith V
-A d
ecay
dis
trib
utio
n
Resu
lts a
re s
ensi
tive
to ra
tio o
f PD
Fsfo
r uan
d d
Do
for l
ow a
nd h
igh
E T
[NEW
APP
RO
AC
H]
(at h
ighe
r e E
T, ed
ir is
clo
ser t
o W
dir;
less
can
cella
tion
with
V-A
) Se
nsiti
vity
is b
est a
t hig
h |η
| w
here
it is
leas
t con
stra
ined
dyW
ddy
Wd
dyW
ddy
Wd
A yW/)
(/)
(/)
(/)
(−
+
−+
+−=
σσ
σσ
22A
. Lyo
n (H
CP2
004)
Cha
rge
asym
met
ry in
W →
eνRe
quir
eeE
Tan
d E T
> 25
GeV
50 <
mT
< 10
0G
eVN
o ot
her E
M o
bjec
t w
ith E
T>
25 G
eV
In fo
rwar
d re
gion
, use
"cal
orim
eter
se
eded
Sit
rack
ing"
to u
tiliz
e ne
w
forw
ard
Silic
onTh
is a
long
with
dri
ft ch
ambe
r can
de
term
ine
char
ge w
ithin
|η|
< 2
Mea
sure
cha
rge
mis
-id ra
te w
ith
data
usi
ng Z
s<
~1%
with
in |
η| <
1.5
< ~4
% fa
r for
war
d
Back
grou
nds
Z [M
C], W
→τν
[MC]
,Q
CD
[dat
a]
23A
. Lyo
n (H
CP2
004)
Dre
ll-Y
anFo
rwar
d B
ackw
ard
Asy
mm
etry
Inte
rfer
ence
of γ
* and
Zf =
u, d
, e
Lead
s to
AFB
in
γ*
ff
f ’−
+→
→e
eZ
pp*
/γ
)0(c
os)0
(cos
)0(c
os)0
(cos
<+
><
−>
=θ
σθ
σθ
σθ
σd
dd
dA FB
θθ
θσ
cos
)co
s1(
cos
2B
Ad
d+
+=
θq
q
e-
e+
f ’Z
ff ’f ’
f+
Dep
ends
on
uuZ,
ddZ
and
eeZ
coup
lings
Can
pro
be c
oupl
ings
Nea
r the
Zre
sona
nce,
AFB
is
rela
ted
to s
in2
θ WN
ew in
tera
ctio
ns m
ay
mod
ify th
e SM
AFB
pred
ictio
n
24A
. Lyo
n (H
CP2
004)
Dre
ll-Y
anFo
rwar
d B
ackw
ard
Asy
mm
etry
CD
F R
un II
Pre
limin
ary
Requ
ire
2 is
olat
ed e
lect
rons
w
ith p
T>
20 G
eV/c
5211
can
dida
tes
in 7
2 pb
-1
No
asym
met
ry s
een
in d
ijet
back
grou
nd
Use
Col
lins-
Sope
rref
eren
ce
fram
e fo
r mea
suri
ng e
lect
ron
scat
teri
ng a
ngle
Redu
ces
unce
rtai
nty
in
scat
teri
ng a
ngle
due
to p
Tof
in
com
ing
part
ons
25A
. Lyo
n (H
CP2
004)
Dre
ll-Y
anFo
rwar
d B
ackw
ard
Asy
mm
etry
CD
F R
un II
Pre
limin
ary
Fit f
or w
eak
mix
ing
angl
e
Fits
for c
oupl
ings
are
in g
ood
agre
emen
t with
w
orld
ave
rage
s
No
evid
ence
of n
ew in
tera
ctio
ns a
bove
the
Zpo
le
0.14/
71.12
ndf
/
0020
.000
46.0
2238
.0si
n 2
2
=
±±
=
χ
θsy
sst
atW
26A
. Lyo
n (H
CP2
004)
Hig
h M
ass
Dre
ll-Y
anS
pect
rum
Sens
itive
to n
ew p
hysi
cs
New
gau
ge b
oson
s (e.
g. Z
'), e
xtra
dim
ensi
ons
Run
1 lim
its su
rpas
sed
and
new
mod
els e
xplo
red
27A
. Lyo
n (H
CP2
004)
Sum
mar
yC
urre
nt p
relim
inar
y re
sults
con
sist
ent w
ith S
M
(The
ory
lines
NN
LO fr
om H
ambe
rg, v
an N
eerv
en, M
atsu
ura)
28A
. Lyo
n (H
CP2
004)
Out
look
1.96
TeV
cros
s se
ctio
ns n
eari
ng p
ublic
atio
nTe
vatr
onel
ectr
owea
k w
orki
ng g
roup
will
mak
e co
mbi
natio
nsSt
ay tu
ned
for f
urth
er a
naly
ses;
> 30
0 pb
-1on
tape
Prel
imin
ary
Wm
ass
mea
sure
men
ts s
oon
29A
. Lyo
n (H
CP2
004)
EX
TRA
S
30A
. Lyo
n (H
CP2
004)
Z →
eeC
ross
Sec
tion
31A
. Lyo
n (H
CP2
004)
Afb
Acc
epta
nce
32A
. Lyo
n (H
CP2
004)
Unc
orre
cted
Afb
