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Kinematic cut for pnn2

Kinematic cut for pnn2. Can we make money with a cut against elastic scattering? LL 5 Oct 04. The idea. Problem is  + heading US or DS & scattering To bother us must be elastic off proton or quasi-elastic. Cut possible for former case

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Kinematic cut for pnn2

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  1. Kinematic cut for pnn2 Can we make money with a cut against elastic scattering? LL 5 Oct 04

  2. The idea • Problem is + heading US or DS & scattering • To bother us must be elastic off proton or quasi-elastic. • Cut possible for former case • Assume + going dead DS or US • Then reln. between angle & momentum

  3. Bad region Kinematics of +-p Elastics (+ heading DS)

  4. Bad region Kinematics of +-p Elastics (+ heading US) 0 200

  5. Kinematics

  6. Proposal • Pick out events with energy near beam • E.g. inner ring of EC, collar, AD, collar,etc • Examine +angle vs momentum • Examine target pattern • See if a cut is justified

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