Diffractive mc for the f l analysis
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Diffractive MC for the F L analysis. Valentina Sola. RAPGAP MC. New sample of RAPGAP from Num07t2.0 FUNNEL version:  pomeron exchange only (http://www-zeus.desy.de/~vsola/ZEUS_ONLY/FLD/rapgap/funnel/fw/rapgapIP.txt)  reggeon excange only

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Diffractive MC for the F L analysis

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Diffractive mc for the f l analysis

Diffractive MCfor the FL analysis

Valentina Sola


Rapgap mc

RAPGAP MC

New sample of RAPGAP from Num07t2.0 FUNNEL version:

 pomeron exchange only

(http://www-zeus.desy.de/~vsola/ZEUS_ONLY/FLD/rapgap/funnel/fw/rapgapIP.txt)

 reggeon excange only

(http://www-zeus.desy.de/~vsola/ZEUS_ONLY/FLD/rapgap/funnel/fw/rapgapIP.txt)

Kinematic region of the new sample:

4 < Q2 < 200 GeV2

0.03 < y < 0.98

σIP = 26.263 nb → LIP = 38.076 pb-1 for 1M of events

σIR = 9.229 nb → LIR = 108.352 pb-1 for 1M of events

FL Rewiew - 29/04/2008


Agreement between data rapgap

Agreement between DATA & RAPGAP

(Have a look to the November '07 Diffractive Monthly Meeting or see Backup)

DIS variavles: difference in normalization

Diffractive variables: difference in shape and normalization

Need to understand RAPGAP IR normalization

DD Monte Carlo is still missing

 Work ongoing to understand difference between DATA and RAPGAP

FL Rewiew - 29/04/2008


Backup

Backup

FL Rewiew - 29/04/2008


Rapgap check max selection i

Rapgap Check (ηMAX selection) - I

― old = Num03t3.1 / “offline” trigger ―new = Num07t1.0 / SPP15-16

Q2e

xe

FL Rewiew - 29/04/2008


Rapgap check max selection ii

Rapgap Check (ηMAX selection) - II

― old = Num03t3.1 / “offline” trigger ―new = Num07t1.0 / SPP15-16

ye

Ee’

FL Rewiew - 29/04/2008


Rapgap check max selection iii

Rapgap Check (ηMAX selection) - III

― old = Num03t3.1 / “offline” trigger ―new = Num07t1.0 / SPP15-16

MX

xIP

FL Rewiew - 29/04/2008


Rapgap check max selection iv

Rapgap Check (ηMAX selection) - IV

― old = Num03t3.1 / “offline” trigger ―new = Num07t1.0 / SPP15-16

β

W

FL Rewiew - 29/04/2008


Max distribution

ηMAX Distribution

→ Loss of MC in the diffractive region

DD in MC still missing

→ MC peak shifted with respect to DATA

FL Rewiew - 29/04/2008


Control plots for max 2 2 i

Control Plots for ηMAX < 2.2 - I

xEL

Q2EL

yEL

Ee

(MC = DJANGOH + PYTHIA + RAPGAP IP from Num03t3.1)

DD Monte Carlo missing

FL Rewiew - 29/04/2008


Control plots for max 2 2 ii

Control Plots for ηMAX < 2.2 - II

xIP

MX

β

W

Difference between DATA and MC

DATA = 102530 / MC = 75140 → 27% less than DATA

FL Rewiew - 29/04/2008


Control plots for max 2 2 i1

Control Plots for ηMAX < 2.2 - I

xEL

Q2EL

yEL

Ee

(MC = RAPGAP IP + RAPGAP IR from Num07t1.0)

DD Monte Carlo missing

FL Rewiew - 29/04/2008


Control plots for max 2 2 ii1

Control Plots for ηMAX < 2.2 - II

xEL

Q2EL

yEL

Ee

(MC = RAPGAP IP + RAPGAP IR from Num07t1.0)

DD Monte Carlo missing

FL Rewiew - 29/04/2008


Control plots for max 2 2 iii

Control Plots for ηMAX < 2.2 - III

xIP

Mx

β

W

(MC = RAPGAP IP + RAPGAP IR from Num07t1.0)

DD Monte Carlo missing

FL Rewiew - 29/04/2008


Control plots for max 2 2 iv

Control Plots for ηMAX < 2.2 - IV

xIP

Mx

β

W

(MC = RAPGAP IP + RAPGAP IR from Num07t1.0)

DD Monte Carlo missing

FL Rewiew - 29/04/2008


Kinematic coverage of data max 2 2

Kinematic Coverage of DATA (ηMAX > 2.2)

Q2 vs xIP

Q2 vs β

Q2 vs y

β vs xIP

LDATA = 41.5 pb-1

FL Rewiew - 29/04/2008


Kinematic coverage of rapgap ip max 2 2

Kinematic Coverage of RAPGAP IP (ηMAX > 2.2)

Q2 vs xIP

Q2 vs β

Q2 vs y

β vs xIP

LRAPGAP IP = 37.3 pb-1

FL Rewiew - 29/04/2008


Kinematic coverage of rapgap ir max 2 2

Kinematic Coverage of RAPGAP IR (ηMAX > 2.2)

Q2 vs xIP

Q2 vs β

CAMBIARE

Q2 vs y

β vs xIP

LRAPGAP IR = 66.5 pb-1

FL Rewiew - 29/04/2008


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