camilla di donato & fabio ambrosino
DESCRIPTION
3 rd KLOE Workshop Physics. Status report on f h ’ g. Camilla Di Donato & Fabio Ambrosino. P.L.B541(2002) : BR( f h ’ g )=(6,10 ± 0,61 ± 0,43 )x10 -5. BR( f h ’ g )=(7,05 ± 0,50 )x10 -5. +0,53 -0,46. f h g. BR( f h g ) measured on Y2K events - PowerPoint PPT PresentationTRANSCRIPT
Camilla Di Donato Camilla Di Donato & Fabio Ambrosino& Fabio AmbrosinoCamilla Di Donato Camilla Di Donato & Fabio Ambrosino& Fabio Ambrosino
Status report on ’
Status report on ’
33rdrd KLOE Workshop PhysicsKLOE Workshop Physics33rdrd KLOE Workshop PhysicsKLOE Workshop Physics
BR() measured on Y2K events
• -3: Phys. Lett. B541 (2002)
• -7k. m. 268 and analysis updated in rad-meeting 13-02-03
P.L.B541(2002)P.L.B541(2002):: BR(BR(’’)=(6,10 ± 0,61 ± 0,43 )x10)=(6,10 ± 0,61 ± 0,43 )x10-5-5P.L.B541(2002)P.L.B541(2002):: BR(BR(’’)=(6,10 ± 0,61 ± 0,43 )x10)=(6,10 ± 0,61 ± 0,43 )x10-5-5
BR(BR(’’)=(7,05 ± 0,50 )x10)=(7,05 ± 0,50 )x10-5-5BR(BR(’’)=(7,05 ± 0,50 )x10)=(7,05 ± 0,50 )x10-5-5+0,53+0,53-0,46-0,46
2000:2000: -32000:2000: -3
M (MeV)
2000:2000: -72000:2000: -7
data Ks Ks Kl Kl
EE(MeV)2/Ndof
2001&2002 data: datarec V13 and V142001&2002 data: datarec V13 and V14
Check Check MCMC in progress: in progress:1.1. MC processed with datarec V13-V14MC processed with datarec V13-V142.2. Accidental in EMC and DC for 2001Accidental in EMC and DC for 2001 and 2002 conditionsand 2002 conditions
• Filfo-EVCL:Filfo-EVCL:Sub-sample from raw-data, without Sub-sample from raw-data, without filfo-evcl to study systematicfilfo-evcl to study systematic
2001/20022001/20022001/20022001/2002
2001:2001: -32001:2001: -3
M (MeV)
100 pb-1 (2
001)
100 pb-1 (2
001)
L L = 340 pb-1 = 340 pb-1 N = 4691 events (no b.s.)N = 4691 events (no b.s.)
2001/2:2001/2: -72001/2:2001/2: -7
data Ks Ks Kl Kl
EE(MeV) 2/Ndof
2000/2001/20022000/2001/20022000/2001/20022000/2001/2002
EE(MeV)
2/Ndof
200020012002
A minimum bias strategy to select data without filfo selection and without EVCL in order to study systematics, has been tested
•At least 3 prompt neutral clusters• >18º• Eclu > 500 MeV (all clusters)
Eclu > 500 MeV means 3.1 Gb/pb-1
Lint = 50 pb-1 150 Gb
FILFO-EVCLFILFO-EVCL FILFO-EVCLFILFO-EVCL
Accidental rate
acc/pb-1
run
2001/20022001/20022001/20022001/2002
run
Eclu
kb/pb-1
DST-sizeDST-sizeDST-sizeDST-size
•On 2000 data we have two On 2000 data we have two compatible measurement; compatible measurement; • 2001 and 2002 statistics 2001 and 2002 statistics analysed with reasonable results; analysed with reasonable results; •Waiting for MC with 2001-2002 Waiting for MC with 2001-2002 run-condition and datarec V13-run-condition and datarec V13-V14;V14;•We will start a.s.a.p. to produce We will start a.s.a.p. to produce a sample from raw without filfo-a sample from raw without filfo-evcl;evcl;
Conclusions and Conclusions and OutlooksOutlooks
Conclusions and Conclusions and OutlooksOutlooks
2001(2)2001(2)2001(2)2001(2)
Systematics: / filfo - evcl - vertex -
(N/) /(N/)z =±15% -=±1° 2%E =±10% -2/Ndof (±1) -0,5%/+1,5%
BR’’ 3% luminosity 1%-2% cross section 2.5%
2000200020002000
Systematics: /
filfo 1.1% evcl 1.75% vertex 1.4%Total 2.5%
(N/) /(N/)z =±15% ±0.4%=±1° ±4%E =±10% -0.4%/+3.0%2/Ndof (±1) -0.4%/+2.5%
Total -4%/+6%