http://alephwww.cern.chhttp://cern.ch/aleph/aleph_general/analysis/WTF/Analyses/mass-global.html

IN CONSTRUCTION

Preliminary Width Results (Last update 08 févr. 2001 )

Results obtained with:

GAL version xxx
JUL version xxx
MIN version 202
DBA version 307
ntuple maker version 1.2
selections were made using

		NN trained at	cut at			NN trained at	cut at			NN trained at	cut at			NN trained at	cut at
182.655	e	189	0.6	188.6	e	189	0.6	191.584	e	189	0.6	195.519	e	196	0.6
	µ	189	0.6		µ	189	0.6		µ	189	0.6		µ	196	0.6
	t	189	0.4		t	189	0.4		t	189	0.4		t	196	0.4
	4q	189	0.3		4q	189	0.3		4q	189	0.3		4q	196	0.3
199.516
	e	200	0.6	201.625	e	200	0.6	204.97	e	200	0.6	206.69	e	200	0.6
	µ	200	0.6		µ	200	0.6		µ	200	0.6		µ	200	0.6
	t	200	0.4		t	200	0.4		t	200	0.3		t	200	0.4
	4q	200	0.3		4q	200	0.3		4q	200	0.3		4q	200	0.3

Table of Results

N₁ = number of events selected by NN
N₂ = number of events selected for mass measurement

DM = expected statistical error (from samples) in GeV/c²
DM₂₀₀ = expected statistical error (for an integrated luminosity of 200 pb^-1) in GeV/c²
^{For the Data, the first error is statistical, then systematic, including the
error due to LEP energy}. ^{For the 4q}
^{channel, an additional error comes from FSI, which is propagated as the last
error on the total of all channels.}

NB: present numbers for Ecm=182.65 and 188.6 GeV are from the published papers. The other numbers are given
by D. Boumediene and G. Leigenbuth.
Some cells are clickable for more details.
Systematic errors for energies higher than 189 GeV are taken as for 189 GeV paper.

Ecm	L(pb^-1)	ch	N₁	N₂	DM	DM₂₀₀	Data (GeV/c²)
182.655	56.812	e	..	..	..	..	..
		µ	105	78	0.309	0.164	80.370±0.287±0.037
		t	87	57	0.557	0.297	79.758±0.540±0.085
		l	322	229	0.198	0.106	80.326±0.184±0.040
		4q	461	384	0.178	0.095	80.461±0.177±0.045±0.056
		all	..	..	..	..	0.135±0.261
188.6	174.20	e	..	290	0.150	0.140	80.319±0.154±0.061
		e new	..	..	..	..	80.310±0.154±?
		µ	..	328	0.139	0.130	80.272±0.141±0.047
		µ new	..	..	..	..	80.269±0.137±?
		t	..	173	0.286	0.267	80.385±0.285±0.047
		t new	333	304	0.213	0.198	80.463±0.209±?
		l	..	791	0.096	0.090	80.304±0.098±0.051
		4q	..	1093	0.101	0.094	80.551± 0.108±0.037±0.042
		all	..	..	..	..	0.212±0.154
191.584	28.931	e	..	..	..	..	81.055±0.390±(0.061)
		µ	..	..	..	..	80.268±0.359±(0.047)
		t	..	..	..	..	80.755±0.432±(0.047)
		l	..	..	..	..	80.662±0.225±(0.049)
		4q	..	..	..	..	±
		all	..	..	..	..	±
195.519	79.857	e	..	..	..	..	80.885±0.247±(0.061)
		µ	..	..	..	..	80.268±0.222± (0.047)
		t	..	..	0.314	0.198	80.909±0.306±(0.047)
		l	..	..	..	..	80.623±0.145±(0.050)
		4q	..	..	..	..	±
		all	..	..	..	..	±
199.516	86.277	e	..	..	..	..	80.720±0.217±(0.061)
		µ	..	..	..	..	80.159±0.258±(0.047)
		t	180	165	0.310	0.204	80.284±0.306±(0.047)
		l	..	..	..	..	80.437±0.146±(0.051)
		4q	..	..	..	..	±
		all	..	..	..	..	±
201.625	41.893	e	..	..	..	..	80.379±0.334± (0.061)
		µ	..	..	..	..	81.028±0.304±(0.047)
		t	168	69	0.471	0.216	80.300±0.434±(0.047)
		l	..	..	..	..	80.643±0.200±(0.050)
		4q	..	..	..	..	±
		all	..	..	..	..	±
204.97	81.288	e	..	..	..	..	81.087±0.308±(0.061)
		µ	..	..	..	..	80.390±0.278±(0.047)
		t	173	154	0.341	0.217	80.342±0.360±(0.047)
		l	..	..	..	..	80.610±0.179±(0.049)
		4q	..	..	..	..	±
		all	..	..	..	..	±
206.69	134.339	e	..	..	..	..	80.840±0.220±(0.061)
		µ	..	..	..	..	80.301±0.179±(0.047)
		t	..	..	0.311	0.255	80.084±0.293±(0.047)
		l	..	..	..	..	80.429±0.126±(0.049)
		4q	..	..	..	..	±
		all	..	..	..	..	±
All available energies	..	e	..	..	..	..	80.630±0.084±(0.061)
		µ	..	..	..	..	80.334±0.079±(0.047)
		t	..	..	..	..	80.409±0.113±(0.047)
		l	..	..	..	..	80.459±0.052±(0.046)
		4q	..	..	..	..	80.526±0.092±(0.054)
		all	..	..	..	..	0.065±0.116

Systematics

(numbers from 189 GeV paper for now)

	DM (MeV/c²)
Source	4q	enqq	mnqq	tnqq	l nqq
(a) Correlated errors
Charged tracking	3	9	6	4	7
e+mu angle bias/resolution		15	15		13
e+mu momentum bias/resolution		8	7		6.5
Jet energy corrections	5	4	8	5	6
Jet energy resolution	7	10	10	10	10
Calorimeter simulation	10	15	10	5	11
Jet angle bias/resolution	5	4	4	5	4
Fragmentation	30	50	35	35	41
Missing radiative corrections	5	5	5	5	5
LEP energy	17	17	17	17	17
(b) Uncorrelated errors
Reference MC statistics	5	9	9	15	6
Background contamination	5	10	3	16	5
Colour reconnection	30
Bose-Einstein effects	30
Total (a+b)	57	61	47	47	50.