CLEO-II Hardware: Trigger Gate Sequencer

CLEO-II Hardware: Trigger Gate Sequencer

[email protected] Your Your life life with with CLEO CLEO++ BTEV BTEV GSAC: Mats Selen, February 24, 2001 The bottom line: We are a small, friendly, well supported group of particle physicists. We work on a variety of interesting physics topics. We contribute significantly

to the design & construction of detectors and electronics. I am looking for (~2) enthusiastic students that like to roll up their sleeves & dive into some fascinating work. [email protected] CLEO CLEO [email protected] DDSS**and andDDSSFragmentation Fragmentationand andPPVV Johnson, Selen c (graduated July/00) e e+

c Hadronization (QCD) D, DS, D*... Try to understand charm production Momentum distributions Spin states [email protected] DDS**and D Fragmentation and P S and DSS Fragmentation and PVV Ds Yields as a function of x(Ds) .44

.62

[email protected] DDSS**and andDDSSFragmentation Fragmentationand andPPVV Just counting spins we would expect PV = V / (V + P) = 3/4 + V (J=1) PV = 0.45 0.05 Other experiments: P (J=0) [email protected] ++ 00 DD00 K K Resonant ResonantSubstructure

Substructure Bergfeld, Selen c Hadronization (QCD) D0 (graduated May/00) K Try to understand charm decay Resonant substructure QM Interference [email protected]

00 ++ 00 D K D K Locations of resonances in the Dalitz Plot and projections + K*0 K*- Non-Resonant Final Best Fit with Seven Resonances M((GeV2) [email protected] 00 ++ 00

D K D K M(K(GeV2) + K*0 K* Non-Resonant K0(1430) K0(1430)0 K*(1680) + [email protected] 00 00 D mixing using D K D mixing using D K ee Sedlack, Selen D*+

D 0 D 0 mix e D*+ K D0 e

mixed Un-mixed K Using neural net techniques [email protected] BB00 D* D*ll and and V Vcbcb Plager, Selen b l B c

D* q2max Last CLEO result: PRD 51, 1014 (1995) This is where the money is (q2max) ! [email protected] [email protected] BTeV BTeV B meson decays can tell us a lot about the Standard Model (and beyond), but we need more data. For the next 5 years, B physics will be dominated by BaBar (SLAC), Belle (KEK) and CDF/D0 (FNAL). BTEV is a new experiment (ready in 5 years) that will dominate B physics in the LHC era.

BTEV will collect more useable B data in a few days than the e+e- B Factories do in a year. Motivation: Vud V V CKM cd V td Vus Vub Vcs Vcb Vts Vtb [email protected] BTeV BTeV

Present knowledge: : Angles Sides : [email protected] BTeV BTeV Why forward? Boost B-B Correlation BTEV Central BTEV

10 7.5 5.0 2.5 0 Boost: Key for triggering Key for large dataset! -5 -1 -2.5 -10 =0 =90o 2.5

10 5 1 [email protected] Do a physics analysis (of your choice) Your Your life life with with CLEO CLEO++ BTEV BTEV If you work with me you will: using CLEO data. (i.e. no waiting). Work on BTEV trigger & Data Acquisition electronics.

Provide a significant contribution to You will be able to market yourself in both academics and industry. both experiments (many people will know about you & your work).

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