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Estimation of the Barrel TOF Response A.Galoyan, J. Ritman, V. Uzhinsky

Estimation of the Barrel TOF Response A.Galoyan, J. Ritman, V. Uzhinsky. Used model. r d =48 cm 22 o < θ <140 o B=2 T. L.D.Landau, E.M.Lifshitz, “Field theory”, 1962. Separation (standard deviations). Separation power at various angles. Fast simulation of Tof response. 3 %.

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Estimation of the Barrel TOF Response A.Galoyan, J. Ritman, V. Uzhinsky

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  1. Estimation of the Barrel TOF ResponseA.Galoyan, J. Ritman, V. Uzhinsky Used model rd=48 cm 22o< θ <140o B=2 T

  2. L.D.Landau, E.M.Lifshitz, “Field theory”, 1962

  3. Separation (standard deviations)

  4. Separation power at various angles

  5. Fast simulation of Tof response 3 % Knowing time-of-flight, momentum and emission angle, we calculate the particle energy and squared mass. This algorithm is included in FastSimApp of Babar-Panda framework.

  6. Squared mass resolution of π, K, P Singlegenerator Single generator Single generator

  7. Charged particle distributions on M2 from Tof and dE/dx from tracking detectors

  8. Characteristics of charged particles generated by DPM at Plab=1.5 GeV/c at dE/dx (MVD) > 4.5 (a.u.)

  9. Possibility ofselection of K-mesons at various restrictions on dE/dX and 0.1<M2(Tof)<0.4

  10. Conclusion • The formulas for time of light calculations have been obtained • assuming barrel ToF geometry and constant magnetic field. • Separation power (s.p.) of barrel ToF in dependence on momentum • is calculated at various emission angles of particles. It is shown, • maximal momentum for particle identification corresponding to • s.p. >= 3 depends on emission angles. • 3. Algorithm of simulation of ToF response is implemented in FastSim • package of Panda-Babar. Corresponding simulations using • DPM model event generator showed that combined information • of M2from barrel ToF and dE/dx from tracking detector (TPC or STT) allow • to reach good separation of slow protons, Π-, K- mesons.

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