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TOTEM physics analysis DPE : explore

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TOTEM physics analysis

DPE : explore

pp -> p jet jet p pTjet>10 geV/c AND down to no jets (min bias)

Cross

sections

1 mb (incl); 7nb(excl) (pT>10) 1 mb

0.3 mb ; 2 nb(pT>15)

4 nb ; 0.03 nb (>35)

1.5 nb ; 0.01 nb (>50)

#events (∫Ldt=3 10^35)

3 10^5 ; 2 10^3 (pT>10 GeV); 3 10^8

1 10^3; 9 (pT>35);

450 ; 3 (pT>50 GeV);

with acceptance cut:

(b=90 30% protons)

10^5 ; 600 (pT>10GeV) 10^8

300 ; 3 (pT>30 GeV) (8 10^6 b=1540, 80% protons)

150; 1 (pT>50)

Trigger strategy:

p+p trigger (for xi indep. optics)

p+gap trigger (for b<18 m)

What to measure

Dijets:

1) dijets cross section as function of pTjet

2) remnants: Energy(2jets)/Etotal

3) rapidity gap distributions

4) Mass distribution: protons only – central only

5) multiple jets (2 jets + gluon radiation)

6) topology of jets

7) jets + lepton(s)

Soft DPE:

1) ds/dM

2) Mass distribution: protons only – central only

3) Rapidity gap and RG suppression

Same arguments in case of Single Diffraction: higher cross sections,

investigate if there is a trigger issue