camilla di donato & fabio ambrosino

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Camilla Di Donato Camilla Di Donato & Fabio Ambrosino & Fabio Ambrosino Status report on 3 3 rd rd KLOE Workshop Physics KLOE Workshop Physics

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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 Presentation

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Page 1: Camilla Di Donato  & Fabio Ambrosino

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

Page 2: Camilla Di Donato  & Fabio Ambrosino

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

Page 3: Camilla Di Donato  & Fabio Ambrosino

2000:2000: -32000:2000: -3

M (MeV)

Page 4: Camilla Di Donato  & Fabio Ambrosino

2000:2000: -72000:2000: -7

data Ks Ks Kl Kl

EE(MeV)2/Ndof

Page 5: Camilla Di Donato  & Fabio Ambrosino

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

Page 6: Camilla Di Donato  & Fabio Ambrosino

2001:2001: -32001:2001: -3

M (MeV)

100 pb-1 (2

001)

100 pb-1 (2

001)

Page 7: Camilla Di Donato  & Fabio Ambrosino

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

Page 8: Camilla Di Donato  & Fabio Ambrosino

2000/2001/20022000/2001/20022000/2001/20022000/2001/2002

EE(MeV)

2/Ndof

200020012002

Page 9: Camilla Di Donato  & Fabio Ambrosino

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

Page 10: Camilla Di Donato  & Fabio Ambrosino

Accidental rate

acc/pb-1

run

2001/20022001/20022001/20022001/2002

Page 11: Camilla Di Donato  & Fabio Ambrosino

run

Eclu

kb/pb-1

DST-sizeDST-sizeDST-sizeDST-size

Page 12: Camilla Di Donato  & Fabio Ambrosino

•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

Page 13: Camilla Di Donato  & Fabio Ambrosino
Page 14: Camilla Di Donato  & Fabio Ambrosino

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%

Page 15: Camilla Di Donato  & Fabio Ambrosino

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%