dy background studies for nica/spd

7
ADVANCED STUDIES INSTITUTE SYMMETRIES AND SPIN SPIN-Praha-2013 and NICA-SPIN-2013 N. Rossiyskaya Prague 9 July 2013

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N. Rossiyskaya. ADVANCED STUDIES INSTITUTE SYMMETRIES AND SPIN SPIN-Praha-2013 and NICA-SPIN-2013. DY Background studies for NICA/SPD. Prague 9 July 2013. Introduction. Start with some numerical estimations on cross sections which to be measured with SPD. 1) Cross section. - PowerPoint PPT Presentation

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Page 1: DY Background  studies for NICA/SPD

ADVANCED STUDIES INSTITUTE SYMMETRIES AND SPIN

SPIN-Praha-2013 and NICA-SPIN-2013

N. Rossiyskaya

Prague 9 July 2013

Page 2: DY Background  studies for NICA/SPD

1) Cross section

NICA kinematics:

Tot (pp) ~ 40 b

DY ~ 1.3 nb

Start with some numerical estimations on cross sections which to be measured with SPD

It is important to control and minimization the background to DY reactions.Also studies is very important and essential for SPD design development .

Page 3: DY Background  studies for NICA/SPD

2) Kinematics range

2~ 4 9 /llM Gev c

Fermilab E866 30s Gev

Also BG studies is very essential to make a wider range on lepton pairs invariant mass, to enlarge statistics for DY reactions

Page 4: DY Background  studies for NICA/SPD

The last 4 sources are important for

SPD design and optimizations

Present the preliminary list of main sources of background to be considered.

Page 5: DY Background  studies for NICA/SPD

- K and π decays

PHENIX

' 0 0 98%D D

Page 6: DY Background  studies for NICA/SPD

ver ~ 1 cm

Page 7: DY Background  studies for NICA/SPD

• Source of DY background are preliminary defined

• DY background studies are in connected with SPD design

• Analysis is in progress

Welcome to collaboration!!!